Medicaid Provider SpendingClaims paid 2018–2024 · HHS public file
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Quest Diagnostics Incorporated MD

Quest Diagnostics Incorporated MD was paid $121.81M by Medicaid between Jan 2018 and Dec 2024, across 387 billing codes. Its largest line is 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 — 24% of everything it billed.

33Billing provider infoQUEST DIAGNOSTICS INCORPORATED MD
BALTIMORE, MD 21227
33aNPI1245307818assigned 11/29/2006
33bProvider typeClinical Medical Laboratory
28Total paid$121.81M
24GClaims8,337,844
24DCodes billed387
24AFirst – last monthJan 2018 – Dec 2024
Compared with peers

Next to other Clinical Medical Laboratory providers in Maryland

Rank by total paid#1 of 93
Median peer was paid$430K
This provider vs. median283×

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.

Auditor's notes

Automated statistical signals. Not evidence of fraud — how these are computed.

Entity ProliferationAuthorized official TIMMERMAN, LEAH controls 20+ related entities in our dataset. Read more
Box 24A · Dates of service

Paid by month

$0$2.0M$4.0M2018201920202021202220232024
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
YearClaimsPaid
2018438,026$6.77M
2019411,576$4.95M
20201,296,257$19.40M
20211,707,875$32.11M
20221,654,379$27.21M
20231,511,332$17.22M
2024incomplete1,318,399$14.15M
Box 24 · Service lines

What it billed for

CodeServiceShareClaimsBene. recordsPaid
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 24% 376,489 296,101 $29.31M
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 6.0% 93,567 66,273 $7.32M
80307 Drug test(s), presumptive, any number of drug classes; immunoassay 5.7% 148,164 107,339 $6.90M
87491 Infectious agent detection by nucleic acid; Chlamydia trachomatis, amplified probe 4.4% 239,033 213,369 $5.39M
87591 Infectious agent detection by nucleic acid; Neisseria gonorrhoeae, amplified probe 4.4% 238,833 213,276 $5.31M
80061 Lipid panel 2.7% 447,250 408,262 $3.32M
80053 Comprehensive metabolic panel 2.5% 498,600 448,721 $3.02M
82306 Vitamin D; 25 hydroxy, includes fraction(s), if performed 2.3% 192,508 174,659 $2.82M
87389 Infectious agent antigen detection by immunoassay technique, HIV-1 antigen with HIV-1 and HIV-2 antibodies 2.2% 183,734 168,424 $2.70M
G0481 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; 8-14 drug class(es), including metabolite(s) if performed 2.2% 22,402 14,702 $2.70M
84443 Thyroid stimulating hormone (TSH) 1.9% 258,372 235,182 $2.31M
85025 Blood count; complete (CBC), automated, and automated differential WBC count 1.7% 472,347 425,464 $2.12M
375 more codes
87801 Infectious agent detection by nucleic acid; amplified probe, multiple organisms 1.6% 46,268 $1.90M
83036 Hemoglobin; glycosylated (A1C) 1.5% 351,694 $1.79M
87661 Infectious agent detection by nucleic acid; Trichomonas vaginalis, amplified probe 1.4% 92,750 $1.65M
86480 1.4% 49,709 $1.65M
81420 Fetal chromosomal aneuploidy genomic sequence analysis panel 1.4% 4,287 $1.65M
88175 Cytopathology, cervical or vaginal, any reporting system; collected in preservative fluid, automated thin layer 1.2% 90,205 $1.46M
U0005 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, cdc or non-cdc, making use of high throughput technologies, completed within 2 calendar days from date of specimen collection (list separately in addition to either hcpcs code u0003 or u0004) as described by cms-2020-01-r2 1.2% 90,188 $1.41M
81220 CFTR (cystic fibrosis transmembrane conductance regulator) gene analysis; common variants 1.1% 6,400 $1.37M
87624 Infectious agent detection by nucleic acid; human papillomavirus (HPV), high-risk types <1% 54,867 $1.21M
87536 <1% 24,644 $1.11M
87799 <1% 47,943 $1.09M
87636 Infectious agent detection by nucleic acid; SARS-CoV-2 and influenza virus types A and B <1% 8,262 $1.07M
86803 <1% 120,153 $1.04M
80081 <1% 20,567 $999K
87633 Infectious agent detection by nucleic acid, respiratory virus, 12-25 targets <1% 5,245 $907K
81513 <1% 24,009 $875K
88305 Level IV - Surgical pathology, gross and microscopic examination <1% 13,628 $834K
80050 General health panel <1% 97,930 $771K
86003 <1% 13,891 $746K
87086 Culture, bacterial; quantitative colony count, urine <1% 152,126 $727K
36415 Collection of venous blood by venipuncture <1% 543,028 $726K
82607 <1% 79,334 $611K
80074 <1% 22,657 $606K
82728 <1% 71,852 $554K
84439 <1% 106,980 $544K
87340 <1% 82,370 $520K
83013 <1% 12,330 $481K
86592 <1% 180,064 $480K
87522 Neg quan hep c or qual rna <1% 21,468 $475K
87512 <1% 19,482 $458K
87088 <1% 109,997 $451K
84153 <1% 46,492 $432K
84702 <1% 50,325 $424K
84403 <1% 29,234 $423K
87901 <1% 2,402 $401K
85027 <1% 100,831 $392K
87902 <1% 2,855 $377K
83550 <1% 76,521 $362K
82746 <1% 47,791 $346K
80048 Basic metabolic panel (calcium, ionized) <1% 69,242 $345K
83655 <1% 41,285 $325K
81001 <1% 177,006 $323K
86696 <1% 24,208 $321K
82670 <1% 18,663 $317K
83540 <1% 83,348 $301K
87070 <1% 48,546 $262K
82652 <1% 13,697 $255K
83001 <1% 21,425 $251K
87631 <1% 3,542 $229K
86360 <1% 8,238 $228K
86769 <1% 7,097 $227K
82043 <1% 72,089 $225K
0241U Neonatal screening for hereditary disorders, genomic sequence analysis panel <1% 1,723 $223K
84146 <1% 18,961 $223K
82570 <1% 80,259 $222K
81329 <1% 4,588 $222K
83970 <1% 10,722 $215K
86361 <1% 12,481 $214K
87186 <1% 41,560 $213K
83002 <1% 17,646 $205K
87900 <1% 2,393 $198K
88142 <1% 16,146 $198K
87077 <1% 40,444 $196K
86706 <1% 33,623 $196K
86695 <1% 21,771 $195K
86704 <1% 28,860 $191K
87635 Infectious agent detection by nucleic acid; SARS-CoV-2 (COVID-19), amplified probe <1% 5,136 $191K
87480 <1% 13,663 $185K
87510 <1% 13,652 $185K
86235 <1% 5,938 $183K
87660 <1% 13,529 $179K
82105 <1% 18,103 $177K
84481 <1% 20,684 $172K
87081 <1% 38,231 $170K
88141 <1% 13,447 $167K
86780 <1% 22,141 $165K
84402 <1% 11,798 $163K
86708 <1% 23,459 $152K
86787 <1% 17,649 $148K
86317 <1% 16,750 $142K
U0002 2019-ncov coronavirus, sars-cov-2/2019-ncov (covid-19), any technique, multiple types or subtypes (includes all targets), non-cdc <1% 3,386 $142K
87481 <1% 18,646 $142K
86038 <1% 20,505 $141K
84144 <1% 10,734 $137K
86481 <1% 2,744 $130K
84436 <1% 32,592 $118K
83020 <1% 15,403 $117K
82627 <1% 8,061 $109K
83735 <1% 28,370 $100K
84479 <1% 27,863 $92K
86140 <1% 30,659 $92K
83880 <1% 4,864 $91K
86376 <1% 10,412 $88K
87906 <1% 1,357 $85K
87563 <1% 4,101 $84K
82950 <1% 28,434 $84K
82784 <1% 8,577 $81K
86762 <1% 9,694 $79K
G0482 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; 15-21 drug class(es), including metabolite(s) if performed <1% 679 $79K
86618 <1% 8,141 $79K
81596 <1% 2,888 $79K
82785 <1% 8,962 $77K
84480 <1% 10,937 $76K
83498 <1% 4,266 $74K
87147 <1% 20,384 $73K
85610 <1% 33,347 $72K
83525 <1% 12,049 $71K
83021 <1% 6,194 $70K
84550 <1% 29,448 $69K
86850 <1% 14,142 $65K
85730 <1% 19,920 $64K
80076 <1% 12,670 $62K
84154 <1% 6,061 $61K
80164 <1% 8,302 $57K
86008 <1% 1,446 $57K
84270 <1% 4,569 $56K
82274 <1% 5,999 $56K
85652 <1% 34,240 $54K
82248 <1% 21,602 $53K
82951 <1% 6,201 $53K
86765 <1% 6,799 $53K
86141 <1% 7,520 $53K
86735 <1% 6,369 $51K
87517 <1% 2,462 $51K
83520 <1% 6,938 $51K
81243 <1% 2,093 $50K
84703 <1% 10,574 $48K
84681 <1% 4,922 $47K
86800 <1% 6,112 $46K
88342 <1% 958 $46K
87625 <1% 2,474 $45K
86364 <1% 3,625 $44K
82378 <1% 3,543 $43K
86431 <1% 13,011 $42K
81511 <1% 655 $41K
85660 <1% 11,871 $40K
86200 <1% 5,422 $40K
83690 <1% 9,872 $40K
82533 <1% 4,060 $38K
86160 <1% 3,040 $38K
87209 <1% 3,348 $37K
82024 <1% 1,894 $37K
83704 <1% 2,634 $37K
82465 <1% 12,935 $36K
88185 <1% 139 $35K
86617 <1% 2,189 $34K
84425 <1% 3,150 $34K
86665 <1% 1,952 $34K
86147 <1% 1,747 $33K
85004 <1% 6,981 $32K
82550 <1% 9,706 $32K
86225 <1% 3,885 $32K
87637 Infectious agent detection by nucleic acid; SARS-CoV-2, influenza, and RSV <1% 312 $32K
84100 <1% 12,936 $31K
83615 <1% 7,498 $30K
84156 <1% 15,135 $30K
87529 <1% 818 $30K
84165 <1% 3,885 $30K
82172 <1% 4,760 $30K
86334 <1% 2,160 $30K
83698 <1% 1,903 $29K
85014 <1% 19,512 $29K
82947 <1% 10,184 $29K
83516 <1% 4,569 $28K
86900 <1% 14,489 $28K
82150 <1% 7,506 $28K
86039 <1% 4,091 $27K
85018 <1% 18,527 $27K
86901 <1% 14,331 $27K
86705 <1% 4,820 $27K
86777 <1% 3,201 $27K
84445 <1% 1,011 $26K
80178 <1% 6,985 $26K
82977 <1% 6,208 $26K
80197 <1% 3,723 $25K
85049 <1% 7,355 $25K
86593 <1% 8,688 $24K
81003 <1% 17,984 $24K
84466 <1% 2,796 $22K
80069 <1% 5,304 $22K
86146 <1% 1,151 $21K
83014 <1% 4,786 $21K
84460 <1% 7,125 $20K
87338 <1% 2,394 $20K
85041 <1% 11,897 $19K
87800 <1% 2,290 $19K
80159 <1% 2,542 $19K
87075 <1% 3,361 $19K
86778 <1% 2,102 $18K
87177 <1% 3,341 $17K
87427 <1% 2,350 $17K
87150 <1% 645 $17K
87449 <1% 2,402 $16K
83721 <1% 3,631 $16K
86300 <1% 1,255 $16K
87798 Infectious agent detection by nucleic acid; not otherwise specified, amplified probe, each organism <1% 2,061 $16K
84450 <1% 5,670 $16K
83695 <1% 2,869 $16K
87255 <1% 714 $15K
82542 <1% 1,315 $15K
81025 <1% 3,705 $15K
85045 <1% 6,153 $15K
82565 <1% 5,107 $14K
82952 <1% 5,868 $14K
87045 <1% 2,567 $13K
86702 <1% 1,702 $13K
85048 <1% 8,886 $13K
81443 <1% 107 $13K
G0483 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; 22 or more drug class(es), including metabolite(s) if performed <1% 797 $13K
87535 <1% 566 $12K
86664 <1% 1,313 $12K
82672 <1% 913 $12K
87205 <1% 4,579 $12K
83921 <1% 1,132 $11K
82677 <1% 714 $10K
87650 <1% 1,444 $10K
83090 <1% 1,085 $10K
86304 <1% 959 $10K
86255 <1% 1,502 $10K
83718 <1% 1,916 $9K
82247 <1% 3,107 $9K
82310 <1% 3,256 $9K
86701 <1% 1,690 $8K
85379 <1% 1,889 $8K
86336 <1% 705 $8K
83521 <1% 860 $8K
84520 <1% 3,262 $7K
80177 <1% 1,419 $7K
84207 <1% 454 $7K
84630 <1% 1,128 $7K
82040 <1% 2,603 $7K
88112 <1% 180 $7K
85060 <1% 737 $6K
99199 Unlisted special service, procedure or report <1% 1,328 $6K
83993 <1% 539 $6K
84305 <1% 490 $6K
84155 <1% 3,154 $6K
87804 Infectious agent antigen detection by immunoassay; Influenza, each type <1% 419 $5K
82088 <1% 212 $5K
82610 <1% 597 $5K
80051 <1% 986 $5K
84134 <1% 736 $5K
86644 <1% 543 $5K
88184 <1% 138 $5K
83010 <1% 530 $5K
87101 <1% 1,072 $5K
84075 <1% 1,643 $4K
87329 <1% 563 $4K
87350 <1% 698 $4K
83876 <1% 201 $4K
87046 <1% 944 $4K
87102 <1% 731 $4K
86021 <1% 587 $4K
82330 <1% 555 $4K
85613 <1% 711 $4K
86709 <1% 575 $4K
82140 <1% 455 $4K
84590 <1% 651 $4K
80354 <1% 697 $4K
80156 <1% 433 $3K
80348 <1% 990 $3K
86812 <1% 251 $3K
87324 <1% 536 $3K
86707 <1% 473 $3K
87999 <1% 308 $3K
80055 <1% 71 $3K
82747 <1% 336 $3K
82397 <1% 295 $3K
80362 <1% 667 $3K
86258 <1% 153 $3K
86341 <1% 202 $3K
85240 <1% 217 $3K
86870 <1% 210 $2K
80349 <1% 584 $2K
86359 <1% 107 $2K
85007 <1% 1,074 $2K
82668 <1% 266 $2K
84166 <1% 233 $2K
84432 <1% 288 $2K
82525 <1% 337 $2K
84244 <1% 146 $2K
81015 <1% 1,228 $2K
87497 <1% 92 $2K
82166 <1% 150 $2K
80361 <1% 565 $2K
80365 <1% 548 $2K
88341 <1% 26 $2K
80346 <1% 379 $2K
82955 <1% 321 $2K
81479 Unlisted molecular pathology procedure <1% 222 $2K
88189 <1% 41 $2K
82985 <1% 224 $2K
87502 Infectious agent detection by nucleic acid, influenza virus, for multiple types or subtypes, includes all targets <1% 24 $2K
83883 <1% 254 $1K
85246 <1% 94 $1K
86382 <1% 70 $1K
87254 <1% 98 $1K
84478 <1% 321 $1K
82530 <1% 112 $1K
81257 <1% 26 $1K
G0145 Screening cytopathology, cervical or vaginal (any reporting system), collected in preservative fluid, automated thin layer preparation, with screening by automated system and manual rescreening under physician supervision <1% 276 $1K
82390 <1% 197 $1K
87220 <1% 411 $992.57
84484 <1% 164 $980.23
80324 <1% 201 $910.33
81241 <1% 29 $886.00
87106 <1% 117 $841.12
88304 <1% 40 $836.51
88312 <1% 12 $831.72
85245 <1% 57 $811.85
86308 <1% 262 $808.37
87184 <1% 185 $798.37
86880 <1% 214 $775.90
G0103 Prostate cancer screening; prostate specific antigen test (psa) <1% 1,104 $769.47
87206 <1% 303 $750.48
80175 <1% 103 $724.97
80353 <1% 186 $722.22
85306 <1% 72 $701.58
84132 <1% 335 $700.22
86015 <1% 68 $693.39
82731 <1% 16 $636.39
86381 <1% 43 $626.80
86886 <1% 51 $597.89
84295 <1% 340 $586.14
80185 <1% 100 $580.76
87493 <1% 26 $578.53
80373 <1% 152 $553.35
85303 <1% 69 $552.94
83519 <1% 63 $518.15
82435 <1% 298 $469.73
82107 <1% 12 $462.68
82642 <1% 30 $455.58
82164 <1% 65 $426.71
86036 <1% 161 $419.08
82103 <1% 59 $411.15
80368 <1% 93 $385.38
86301 <1% 38 $384.51
80372 <1% 86 $360.36
80360 <1% 86 $360.36
87185 <1% 124 $297.97
82374 <1% 215 $288.61
36416 <1% 945 $280.08
82157 <1% 13 $270.79
80321 <1% 55 $267.12
99211 Office or other outpatient visit for the evaluation and management of an established patient, minimal severity <1% 15 $255.10
87040 <1% 96 $239.24
87210 <1% 96 $234.30
82085 <1% 44 $232.82
80371 <1% 52 $215.22
99001 <1% 2,205 $204.56
87109 <1% 12 $181.32
84482 <1% 27 $171.12
87107 <1% 33 $163.26
86337 <1% 12 $160.33
86645 <1% 14 $143.85
83835 <1% 12 $143.39
80165 <1% 28 $141.10
86231 <1% 26 $132.52
80323 <1% 13 $126.52
86340 <1% 14 $110.96
G0328 Colorectal cancer screening; fecal occult blood test, immunoassay, 1-3 simultaneous <1% 56 $104.79
85300 <1% 12 $104.30
86060 <1% 28 $97.48
G0306 Complete cbc, automated (hgb, hct, rbc, wbc, without platelet count) and automated wbc differential count <1% 113 $93.13
85305 <1% 14 $83.40
84378 <1% 12 $68.67
80358 <1% 146 $68.67
84300 <1% 13 $41.94
89055 <1% 15 $37.30
80355 <1% 17 $28.65
80356 <1% 12 $23.72
0346U <1% 17 $0.02
81401 0% 15 $0.00
G0472 Hepatitis c antibody screening, for individual at high risk and other covered indication(s) 0% 12 $0.00
G0475 Hiv antigen/antibody, combination assay, screening 0% 13 $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 officialTIMMERMAN, LEAH (VICE PRESIDENT)
Parent organizationQUEST DIAGNOSTICS INCORPORATED
Same official

Other billing entities under TIMMERMAN, LEAH

Full network →
ProviderLocationPaid
Unilab CorporationWest Hills, CA$668.50M
Quest Diagnostics IncorporatedClifton, NJ$637.74M
Quest Diagnostics LLC IlWood Dale, IL$429.84M
Quest Diagnostics Clinical Laboratories INCIrving, TX$276.76M
Labone LLCLenexa, KS$212.28M
Quest Diagnostics Clinical Laboratories INCTucker, GA$211.13M
Quest Diagnostics Clinical Laboratories INCMiramar, FL$197.58M
Labone of Ohio INCCincinnati, OH$167.17M
Unilab CorporationSacramento, CA$141.24M
Quest Diagnostics IncorporatedLas Vegas, NV$59.32M
Quest Diagnostics LLC IlSchaumburg, IL$50.71M
Quest Diagnostics Clinical Laboratories INCTampa, FL$49.99M
Quest Diagnostics Nichols Institute, INC.Chantilly, VA$46.91M
Quest Diagnostics Nichols InstituteSan Juan Capistrano, CA$39.93M
Quest Diagnostics Clinical Laboratories INCNorristown, PA$22.72M
Specialty Laboratories INCWest Hills, CA$16.76M
Quest Diagnostics Clinical Laboratories INCDenver, CO$14.27M
Quest Diagnostics Clinical Laboratories INCHouston, TX$8.76M
Med Fusion, LLCLewisville, TX$4.17M
Quest Diagnostics Clinical Laboratories INCMaryland Heights, MO$2.98M

Matched on the authorized-official name exactly as entered in NPPES. A common name can match unrelated people.