Medicaid Provider SpendingClaims paid 2018–2024 · HHS public file
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Dental

Western Dental Services, INC

Western Dental Services, INC was paid $1.08M by Medicaid between Jan 2018 and Dec 2021, across 29 billing codes. Its largest line is D0150, Comprehensive oral evaluation - new or established patient — 21% of everything it billed.

33Billing provider infoWESTERN DENTAL SERVICES, INC
SAN MATEO, CA 94403
33aNPI1154677763assigned 08/01/2012
33bProvider typeDentist
28Total paid$1.08M
24GClaims31,709
24DCodes billed29
24AFirst – last monthJan 2018 – Dec 2021
Compared with peers

Next to other Dentist providers in California

Rank by total paid#467 of 2,314
Median peer was paid$185K
This provider vs. median5.8×

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 DIAZ, SILVIA controls 13+ related entities in our dataset. Read more
Box 24A · Dates of service

Paid by month

$0$20K$40K$60K2018201920202021202220232024
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
201811,136$347K
20198,865$332K
20204,469$157K
20217,239$243K
Box 24 · Service lines

What it billed for

CodeServiceShareClaimsBene. recordsPaid
D0150 Comprehensive oral evaluation - new or established patient 21% 3,836 3,835 $222K
D0120 Dental checkup, returning patientPeriodic oral evaluation - established patient 15% 3,919 3,918 $159K
D0210 Intraoral - complete series of radiographic images 11% 2,536 2,534 $114K
D0230 Intraoral - periapical each additional radiographic image 9.2% 5,529 5,416 $99K
D1120 Dental cleaning, childProphylaxis - child 6.7% 2,426 2,420 $72K
D0274 Bitewings - four radiographic images 6.4% 3,328 3,318 $69K
D1110 Prophylaxis - adult 6.1% 920 919 $66K
D7210 Extraction, erupted tooth requiring removal of bone and/or sectioning of tooth 4.6% 418 237 $50K
D2392 Resin-based composite - two surfaces, posterior, primary or permanent 4.5% 722 464 $48K
D1208 Topical application of fluoride, excluding varnish 3.3% 3,471 3,464 $35K
D7140 Extraction, erupted tooth or exposed root 2.5% 489 153 $27K
D4341 2.2% 341 134 $24K
17 more codes
D2391 Resin-based composite - one surface, posterior, primary or permanent 1.8% 355 $19K
D2150 Silver amalgam - two surfaces, primary or permanent 1.5% 237 $16K
D9430 1.4% 471 $15K
D9230 Inhalation of nitrous oxide / analgesia, anxiolysis <1% 266 $10K
D0350 <1% 1,037 $9K
D0272 Bitewings - two radiographic images <1% 752 $9K
D1351 Sealant - per tooth <1% 224 $3K
D9910 <1% 67 $3K
D0330 Panoramic radiographic image <1% 106 $3K
D2330 <1% 23 $2K
D1206 Topical application of fluoride varnish <1% 111 $1K
D2160 <1% 16 $1K
D4910 <1% 13 $1K
D2140 <1% 18 $982.80
D0220 Intraoral - periapical first radiographic image <1% 14 $168.00
D0270 <1% 12 $50.00
D1999 0% 52 $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 officialDIAZ, SILVIA (PPO COORDINATOR)
Same official

Other billing entities under DIAZ, SILVIA

Full network →
ProviderLocationPaid
Western Dental Services, INCSan Jose, CA$5.23M
Western Dental Services, INC.Antioch, CA$4.85M
Western Dental Services, INC.Santa Clara, CA$2.86M
Western Dental Services, INCGilroy, CA$1.73M
Western Dental Services, INC.Livermore, CA$1.52M
Western Dental Services, INC.San Marcos, CA$1.27M
Western Dental Services, INCNapa, CA$1.05M
Western Dental Services, INC.National City, CA$612K
Soumava Sen, DDS, P.C.San Antonio, TX$121K
Soumava Sen, DDS, P.C.Euless, TX$55K
Soumava Sen, DDS, P.CGarland, TX$52K
Soumava Sen, DDS, P.C.Carrollton, TX$23K
Western Dental of Arizona, INC.Tempe, AZ$48.01

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