Physician
Shannon Clinic
Shannon Clinic was paid $26.16M by Medicaid between Jan 2018 and Dec 2024, across 256 billing codes. Its largest line is 99213, doctor's office visit, returning patient (routine) — 20% of everything it billed.
33Billing provider infoSHANNON CLINIC
SAN ANGELO, TX 76903
SAN ANGELO, TX 76903
33aNPI1770587149assigned 06/13/2005
33bProvider typeAllergy & Immunology Physician
28Total paid$26.16M
24GClaims781,458
24DCodes billed256
24AFirst – last monthJan 2018 – Dec 2024
Compared with peers
Next to other Allergy & Immunology Physician providers in Texas
Rank by total paid#1 of 62
Median peer was paid$91K
This provider vs. median289×
Peers share this provider's primary NPPES type and state. Size alone says nothing about billing quality: a big agency or a hospital system is expected to sit far above the median.
Box 24A · Dates of service
Paid by month
Paid that monthNov–Dec 2024: claims still arriving when the file was cut, so these months run low for every provider
By year, as a table
| Year | Claims | Paid | |
|---|---|---|---|
| 2018 | 15,262 | $131K | |
| 2019 | 16,225 | $152K | |
| 2020 | 42,543 | $861K | |
| 2021 | 203,316 | $5.92M | |
| 2022 | 207,932 | $7.76M | |
| 2023 | 188,285 | $7.37M | |
| 2024incomplete | 107,895 | $3.96M |
Box 24 · Service lines
What it billed for
| Code | Service | Share | Claims | Bene. records | Paid |
|---|---|---|---|---|---|
| 99213 | Doctor's office visit, returning patient (routine)Office or other outpatient visit for the evaluation and management of an established patient, low complexity | 20% | 118,156 | 102,390 | $5.29M |
| 99214 | Doctor's office visit, returning patient (more involved)Office or other outpatient visit for the evaluation and management of an established patient, moderate complexity | 19% | 88,339 | 82,356 | $4.94M |
| 99391 | Periodic comprehensive preventive medicine reevaluation, established patient, infant (under 1 year) | 6.8% | 23,586 | 20,544 | $1.78M |
| 99392 | Periodic comprehensive preventive medicine reevaluation, established patient, early childhood (1-4 years) | 6.1% | 20,084 | 19,715 | $1.60M |
| 87428 | 5.8% | 30,936 | 29,615 | $1.53M | |
| 90460 | Immunization administration through 18 years of age via any route, first or only component | 4.3% | 104,014 | 45,794 | $1.13M |
| 99393 | Periodic comprehensive preventive medicine reevaluation, established patient, late childhood (5-11 years) | 4.1% | 12,655 | 12,432 | $1.06M |
| 99284 | Emergency room visit (serious)Emergency department visit for the evaluation and management, high severity | 3.7% | 15,695 | 15,259 | $960K |
| 99283 | Emergency room visit (moderate)Emergency department visit for the evaluation and management, moderate severity | 3.4% | 19,668 | 19,095 | $885K |
| 87426 | Infectious agent antigen detection, SARS-CoV-2 (COVID-19) | 2.2% | 15,522 | 13,424 | $576K |
| 99394 | Periodic comprehensive preventive medicine reevaluation, established patient, adolescent (12-17 years) | 2.2% | 6,584 | 6,470 | $571K |
| 99285 | Emergency room visit (most serious)Emergency department visit for the evaluation and management, high severity with immediate threat to life | 1.7% | 8,203 | 8,019 | $444K |
244 more codes
| 87880 | Infectious agent antigen detection by immunoassay; Streptococcus, group A | 1.5% | 31,303 | $383K |
| 99212 | Office or other outpatient visit for the evaluation and management of an established patient, straightforward | 1.4% | 12,184 | $371K |
| 76816 | Ultrasound, pregnant uterus, real time with image documentation, follow-up | 1.3% | 4,633 | $345K |
| 99204 | Doctor's office visit, new patient (more involved) | 1.1% | 2,579 | $291K |
| 99232 | Hospital visit by a doctor, follow-up day | <1% | 9,826 | $253K |
| 01967 | Neuraxial labor analgesia/anesthesia for planned vaginal delivery | <1% | 1,152 | $236K |
| J0585 | Injection, onabotulinumtoxina, 1 unit | <1% | 303 | $227K |
| 93306 | Echocardiography, transthoracic, real-time with image documentation, with and without Doppler, complete | <1% | 5,411 | $157K |
| 88305 | Level IV - Surgical pathology, gross and microscopic examination | <1% | 4,918 | $144K |
| 90792 | Psychiatric diagnostic evaluation with medical services | <1% | 1,500 | $133K |
| 99203 | Doctor's office visit, new patient (routine) | <1% | 1,580 | $117K |
| 76817 | Ultrasound, pregnant uterus, real time with image documentation, transvaginal | <1% | 1,809 | $116K |
| 90461 | <1% | 27,717 | $114K | |
| 76811 | Ultrasound, pregnant uterus, real time with image documentation, fetal and maternal evaluation, detailed | <1% | 1,492 | $109K |
| 99233 | Hospital visit by a doctor, follow-up day (complex) | <1% | 4,373 | $107K |
| 99429 | <1% | 3,176 | $101K | |
| 74177 | Computed tomography, abdomen and pelvis; with contrast material | <1% | 1,822 | $99K |
| 99282 | Emergency department visit for the evaluation and management, low to moderate severity | <1% | 2,783 | $85K |
| 99215 | Doctor's office visit, returning patient (complex) | <1% | 844 | $84K |
| 70450 | Computed tomography, head or brain; without contrast material | <1% | 4,411 | $80K |
| 71045 | Radiologic examination, chest; single view | <1% | 19,408 | $77K |
| 96110 | Developmental screening, with scoring and documentation, per standardized instrument | <1% | 9,456 | $75K |
| 76819 | Fetal biophysical profile; without non-stress testing | <1% | 1,286 | $71K |
| 99239 | Hospital discharge day management, more than 30 minutes | <1% | 1,439 | $70K |
| 90791 | Psychiatric diagnostic evaluation | <1% | 649 | $70K |
| 99238 | Hospital discharge day management, 30 minutes or less | <1% | 1,195 | $69K |
| 71046 | Radiologic examination, chest; 2 views | <1% | 5,498 | $66K |
| 0002A | <1% | 2,597 | $62K | |
| 87804 | Infectious agent antigen detection by immunoassay; Influenza, each type | <1% | 5,115 | $58K |
| 0001A | <1% | 2,735 | $57K | |
| 99223 | Prolong inpt eval add15 m | <1% | 690 | $43K |
| 90832 | Psychotherapy session, about 30 minutes | <1% | 882 | $43K |
| 96372 | Therapeutic, prophylactic, or diagnostic injection; subcutaneous or intramuscular | <1% | 3,207 | $36K |
| 88307 | <1% | 576 | $35K | |
| 87635 | Infectious agent detection by nucleic acid; SARS-CoV-2 (COVID-19), amplified probe | <1% | 1,622 | $33K |
| 87807 | <1% | 3,239 | $33K | |
| 42820 | Tonsillectomy and adenoidectomy; younger than age 12 | <1% | 156 | $29K |
| 59430 | <1% | 329 | $27K | |
| 96131 | <1% | 313 | $26K | |
| 77067 | Screening mammography, bilateral, including computer-aided detection | <1% | 1,913 | $26K |
| J1050 | Injection, medroxyprogesterone acetate, 1 mg | <1% | 370 | $26K |
| 69436 | Tympanostomy (requiring insertion of ventilating tube), general anesthesia | <1% | 192 | $26K |
| 99460 | <1% | 344 | $26K | |
| 92012 | Ophthalmological services: medical examination and evaluation, intermediate, established patient | <1% | 474 | $24K |
| 90833 | Psychotherapy, 30 minutes with patient when performed with an E&M service (add-on) | <1% | 733 | $23K |
| 73630 | <1% | 1,362 | $23K | |
| 96130 | <1% | 341 | $23K | |
| 99442 | <1% | 761 | $21K | |
| 87491 | Infectious agent detection by nucleic acid; Chlamydia trachomatis, amplified probe | <1% | 757 | $21K |
| 97110 | Therapeutic procedure, each 15 minutes; therapeutic exercises to develop strength and endurance, flexibility and range of motion | <1% | 403 | $21K |
| 87591 | Infectious agent detection by nucleic acid; Neisseria gonorrhoeae, amplified probe | <1% | 743 | $20K |
| 77063 | Screening digital breast tomosynthesis, bilateral | <1% | 2,027 | $18K |
| 76705 | Ultrasound, abdominal, real time with image documentation; limited | <1% | 879 | $18K |
| 99395 | Periodic comprehensive preventive medicine reevaluation, established patient, 18-39 years | <1% | 306 | $18K |
| 73110 | <1% | 660 | $17K | |
| 73610 | <1% | 762 | $16K | |
| 11042 | Debridement, subcutaneous tissue (includes epidermis, dermis, and subcutaneous tissue); first 20 sq cm | <1% | 1,066 | $16K |
| 99291 | Critical care, evaluation and management of the critically ill patient, first 30-74 minutes | <1% | 123 | $15K |
| 0071A | <1% | 359 | $15K | |
| 99423 | <1% | 490 | $14K | |
| 00170 | Anesthesia for intraoral procedures, including biopsy | <1% | 87 | $14K |
| 90960 | End-stage renal disease related services monthly, for patients 20 years and older, with 4 or more face-to-face visits | <1% | 1,048 | $14K |
| 81002 | <1% | 4,810 | $14K | |
| 88304 | <1% | 1,565 | $13K | |
| 74176 | Computed tomography, abdomen and pelvis; without contrast material | <1% | 306 | $13K |
| 99202 | Office or other outpatient visit for the evaluation and management of a new patient, straightforward | <1% | 243 | $13K |
| 74018 | <1% | 964 | $12K | |
| 0072A | <1% | 312 | $12K | |
| 73564 | <1% | 469 | $12K | |
| 96136 | <1% | 624 | $12K | |
| 90686 | <1% | 15,911 | $12K | |
| 73130 | <1% | 523 | $11K | |
| 76830 | Ultrasound, transvaginal | <1% | 201 | $11K |
| 93010 | Electrocardiogram, routine ECG with at least 12 leads; interpretation and report only | <1% | 2,795 | $10K |
| 99244 | Office or other outpatient consultation, moderate to high complexity | <1% | 77 | $10K |
| 85025 | Blood count; complete (CBC), automated, and automated differential WBC count | <1% | 4,738 | $9K |
| 87389 | Infectious agent antigen detection by immunoassay technique, HIV-1 antigen with HIV-1 and HIV-2 antibodies | <1% | 740 | $9K |
| 76801 | <1% | 110 | $9K | |
| 76815 | Ultrasound, pregnant uterus, real time with image documentation, limited | <1% | 163 | $8K |
| 93000 | <1% | 938 | $8K | |
| 59409 | Vaginal delivery only (with or without episiotomy and/or forceps) | <1% | 13 | $7K |
| 83036 | Hemoglobin; glycosylated (A1C) | <1% | 1,939 | $7K |
| 76770 | <1% | 290 | $7K | |
| 64615 | <1% | 91 | $7K | |
| 87800 | <1% | 202 | $7K | |
| 0004A | <1% | 562 | $7K | |
| 92014 | Ophthalmological services: medical examination and evaluation, comprehensive, established patient | <1% | 268 | $6K |
| 0054A | <1% | 230 | $6K | |
| 80053 | Comprehensive metabolic panel | <1% | 3,464 | $6K |
| 86780 | <1% | 729 | $5K | |
| 92567 | <1% | 440 | $5K | |
| 76642 | <1% | 248 | $5K | |
| 96160 | <1% | 3,050 | $5K | |
| 59025 | Fetal non-stress test | <1% | 161 | $5K |
| 90715 | <1% | 235 | $5K | |
| 85610 | <1% | 2,794 | $4K | |
| 84443 | Thyroid stimulating hormone (TSH) | <1% | 553 | $4K |
| 90837 | Psychotherapy session, about an hour | <1% | 43 | $4K |
| 99222 | Initial hospital care, per day, moderate complexity | <1% | 91 | $4K |
| 87086 | Culture, bacterial; quantitative colony count, urine | <1% | 576 | $3K |
| 95117 | <1% | 478 | $3K | |
| 80061 | Lipid panel | <1% | 750 | $3K |
| 0052A | <1% | 80 | $3K | |
| 90682 | <1% | 65 | $3K | |
| 0051A | <1% | 79 | $3K | |
| 86850 | <1% | 431 | $3K | |
| 96380 | <1% | 166 | $3K | |
| 99231 | Subsequent hospital care, per day, straightforward or low complexity | <1% | 179 | $3K |
| 90677 | <1% | 3,217 | $3K | |
| 73721 | Magnetic resonance imaging, any joint of lower extremity; without contrast material | <1% | 53 | $3K |
| 72100 | <1% | 111 | $2K | |
| J0561 | Injection, penicillin g benzathine, 100,000 units | <1% | 14 | $2K |
| 88342 | <1% | 150 | $2K | |
| 90471 | Immunization administration (includes percutaneous, intradermal, subcutaneous, or intramuscular injections), 1 vaccine | <1% | 256 | $2K |
| 84439 | <1% | 460 | $2K | |
| 73030 | <1% | 134 | $2K | |
| 84481 | <1% | 289 | $2K | |
| 99221 | <1% | 25 | $2K | |
| 95819 | <1% | 50 | $2K | |
| 81025 | <1% | 248 | $2K | |
| 99443 | <1% | 27 | $2K | |
| 92015 | Determination of refractive state | <1% | 164 | $2K |
| 96116 | <1% | 32 | $2K | |
| 93271 | <1% | 12 | $1K | |
| 94729 | <1% | 47 | $1K | |
| 76820 | <1% | 43 | $1K | |
| U0003 | Infectious agent detection by nucleic acid (dna or rna); severe acute respiratory syndrome coronavirus 2 (sars-cov-2) (coronavirus disease [covid-19]), amplified probe technique, making use of high throughput technologies as described by cms-2020-01-r | <1% | 39 | $1K |
| 99201 | <1% | 73 | $1K | |
| 82306 | Vitamin D; 25 hydroxy, includes fraction(s), if performed | <1% | 136 | $1K |
| 90656 | <1% | 1,637 | $1K | |
| 17110 | <1% | 14 | $1K | |
| 76856 | Ultrasound, pelvic (nonobstetric), real time with image documentation; complete | <1% | 25 | $960.42 |
| 80307 | Drug test(s), presumptive, any number of drug classes; immunoassay | <1% | 301 | $959.33 |
| 86762 | <1% | 83 | $947.57 | |
| 81001 | <1% | 1,338 | $945.49 | |
| 94726 | <1% | 30 | $907.97 | |
| 96137 | <1% | 37 | $905.48 | |
| 90961 | <1% | 75 | $872.43 | |
| 88142 | <1% | 55 | $841.81 | |
| 90935 | Hemodialysis procedure with single evaluation by a physician | <1% | 73 | $825.38 |
| 87624 | Infectious agent detection by nucleic acid; human papillomavirus (HPV), high-risk types | <1% | 26 | $807.32 |
| 90834 | Psychotherapy session, about 45 minutes | <1% | 18 | $682.71 |
| 99407 | <1% | 32 | $659.12 | |
| 82728 | <1% | 68 | $651.49 | |
| 86803 | <1% | 66 | $648.73 | |
| 92557 | <1% | 26 | $609.85 | |
| 72148 | Magnetic resonance imaging, lumbar spine; without contrast material | <1% | 12 | $583.80 |
| 92134 | <1% | 36 | $550.74 | |
| 94618 | <1% | 27 | $547.27 | |
| 0003A | <1% | 38 | $544.00 | |
| 99462 | <1% | 13 | $513.52 | |
| 90480 | <1% | 16 | $504.00 | |
| 80050 | General health panel | <1% | 19 | $498.44 |
| 87340 | <1% | 304 | $478.36 | |
| G0279 | Diagnostic digital breast tomosynthesis, unilateral or bilateral (list separately in addition to 77065 or 77066) | <1% | 28 | $445.48 |
| J0696 | Injection, ceftriaxone sodium, per 250 mg | <1% | 259 | $420.98 |
| 70551 | Magnetic resonance imaging, brain; without contrast material | <1% | 12 | $417.77 |
| 87070 | <1% | 49 | $379.88 | |
| 94640 | Pressurized or nonpressurized inhalation treatment for acute airway obstruction | <1% | 26 | $375.26 |
| 82043 | <1% | 203 | $352.62 | |
| 87150 | <1% | 14 | $347.33 | |
| 94060 | <1% | 12 | $331.76 | |
| 81000 | <1% | 234 | $331.64 | |
| 73080 | <1% | 13 | $310.07 | |
| 76536 | <1% | 13 | $282.12 | |
| 0012A | <1% | 67 | $265.45 | |
| 83516 | <1% | 32 | $248.60 | |
| 88302 | <1% | 30 | $247.33 | |
| 90671 | <1% | 491 | $231.36 | |
| 93272 | <1% | 12 | $224.33 | |
| 92551 | <1% | 57 | $216.27 | |
| 86900 | <1% | 85 | $199.07 | |
| 86901 | <1% | 84 | $196.43 | |
| 69210 | <1% | 13 | $193.71 | |
| 0011A | <1% | 77 | $193.53 | |
| 93296 | <1% | 29 | $170.80 | |
| J1040 | Injection, methylprednisolone acetate, 80 mg | <1% | 43 | $144.67 |
| 73502 | <1% | 15 | $143.92 | |
| 0202U | Oncology (prostate), multianalyte, gene expression profiling | <1% | 79 | $126.00 |
| 82947 | <1% | 52 | $124.65 | |
| 93297 | <1% | 12 | $119.78 | |
| G2066 | Interrogation device evaluation(s), (remote) up to 30 days; implantable cardiovascular physiologic monitor system, implantable loop recorder system, or subcutaneous cardiac rhythm monitor system, remote data acquisition(s), receipt of transmissions and technician review, technical support and distribution of results | <1% | 13 | $115.10 |
| J1885 | Injection, ketorolac tromethamine, per 15 mg | <1% | 66 | $95.36 |
| 80069 | <1% | 65 | $64.08 | |
| J3301 | Injection, triamcinolone acetonide, not otherwise specified, 10 mg | <1% | 23 | $61.74 |
| 90672 | <1% | 380 | $57.26 | |
| 83970 | <1% | 24 | $38.52 | |
| 85027 | <1% | 1,467 | $37.98 | |
| 82570 | <1% | 37 | $35.49 | |
| 83880 | <1% | 14 | $35.20 | |
| 80305 | <1% | 69 | $27.59 | |
| 84156 | <1% | 36 | $25.13 | |
| J1100 | Injection, dexamethasone sodium phosphate, 1 mg | <1% | 32 | $20.94 |
| 87040 | <1% | 191 | $18.20 | |
| G2211 | Visit complexity inherent to evaluation and management associated with medical care services that serve as the continuing focal point for all needed health care services and/or with medical care services that are part of ongoing care related to a patient's single, serious condition or a complex condition. (add-on code, list separately in addition to office/outpatient evaluation and management visit, new or established) | <1% | 53 | $13.61 |
| 99152 | <1% | 17 | $9.83 | |
| 77080 | <1% | 64 | $7.75 | |
| 86592 | <1% | 2,031 | $7.54 | |
| 84703 | <1% | 73 | $6.64 | |
| 85018 | <1% | 2,133 | $4.18 | |
| 85014 | <1% | 2,108 | $4.18 | |
| J7613 | Albuterol, inhalation solution, fda-approved final product, non-compounded, administered through dme, unit dose, 1 mg | <1% | 25 | $4.00 |
| 82962 | <1% | 1,641 | $3.00 | |
| 83690 | <1% | 93 | $1.22 | |
| 91305 | <1% | 40 | $0.03 | |
| 90723 | 0% | 6,590 | $0.00 | |
| 36415 | Collection of venous blood by venipuncture | 0% | 5,175 | $0.00 |
| 90647 | 0% | 2,596 | $0.00 | |
| 90651 | 0% | 670 | $0.00 | |
| 90697 | 0% | 438 | $0.00 | |
| 90716 | 0% | 63 | $0.00 | |
| 96127 | 0% | 733 | $0.00 | |
| G0008 | Administration of influenza virus vaccine | 0% | 197 | $0.00 |
| 90680 | 0% | 407 | $0.00 | |
| 99024 | 0% | 56 | $0.00 | |
| 90620 | 0% | 60 | $0.00 | |
| 0241U | Neonatal screening for hereditary disorders, genomic sequence analysis panel | 0% | 414 | $0.00 |
| 90698 | 0% | 316 | $0.00 | |
| 90660 | 0% | 40 | $0.00 | |
| 90381 | 0% | 38 | $0.00 | |
| 90696 | 0% | 38 | $0.00 | |
| G0480 | Drug test(s), definitive, utilizing (1) drug identification methods able to identify individual drugs and distinguish between structural isomers (but not necessarily stereoisomers), including, but not limited to gc/ms (any type, single or tandem) and lc/ms (any type, single or tandem and excluding immunoassays (e.g., ia, eia, elisa, emit, fpia) and enzymatic methods (e.g., alcohol dehydrogenase)), (2) stable isotope or other universally recognized internal standards in all samples (e.g., to control for matrix effects, interferences and variations in signal strength), and (3) method or drug-specific calibration and matrix-matched quality control material (e.g., to control for instrument variations and mass spectral drift); qualitative or quantitative, all sources, includes specimen validity testing, per day; 1-7 drug class(es), including metabolite(s) if performed | 0% | 37 | $0.00 |
| 90619 | 0% | 12 | $0.00 | |
| 83735 | 0% | 35 | $0.00 | |
| 99441 | 0% | 31 | $0.00 | |
| 82607 | 0% | 15 | $0.00 | |
| 97804 | 0% | 12 | $0.00 | |
| 80048 | Basic metabolic panel (calcium, ionized) | 0% | 17 | $0.00 |
| 90670 | 0% | 9,302 | $0.00 | |
| 90633 | 0% | 2,788 | $0.00 | |
| 90681 | 0% | 2,543 | $0.00 | |
| 90648 | 0% | 5,451 | $0.00 | |
| 85007 | 0% | 343 | $0.00 | |
| 90710 | 0% | 1,247 | $0.00 | |
| 90734 | 0% | 433 | $0.00 | |
| 82247 | 0% | 782 | $0.00 | |
| 90700 | 0% | 76 | $0.00 | |
| 90707 | 0% | 64 | $0.00 | |
| 91300 | 0% | 44 | $0.00 | |
| 99177 | 0% | 69 | $0.00 | |
| 99173 | 0% | 31 | $0.00 | |
| 90662 | 0% | 28 | $0.00 | |
| G0179 | Physician or allowed practitioner re-certification for medicare-covered home health services under a home health plan of care (patient not present), including contacts with home health agency and review of reports of patient status required by physicians and allowed practitioners to affirm the initial implementation of the plan of care | 0% | 24 | $0.00 |
| 90380 | 0% | 12 | $0.00 |
Claims and beneficiary counts add up across code × month rows, so one patient seen every month counts many times. Rows with fewer than 12 claims are suppressed by HHS, so small lines can be missing.
From NPPES
Who's on the registration
Authorized officialVILLARREAL, RICARDO (COO)
| Provider | Location | Paid |
|---|---|---|
| Shannon Clinic | Ozona, TX | $280K |
| Shannon Clinic | San Angelo, TX | $373.12 |
Matched on the authorized-official name exactly as entered in NPPES. A common name can match unrelated people.