What is William Chen's specialty?

William Chen (NPI 1851498372) is a Medicare-billing provider whose primary specialty is Internal Medicine in San Pablo, CA.

Where does William Chen practice?

William Chen practices in San Pablo, CA, based on the location reported in the CMS Medicare provider datasets for NPI 1851498372.

How much does Medicare pay William Chen?

William Chen (NPI 1851498372) received approximately $221K in total Medicare Part B payments, serving 496 beneficiaries, per the CMS Medicare Physician & Other Practitioners dataset.

PROVIDER PROFILE · NPI 1851498372

William ChenMD

Internal MedicineSan Pablo, CAI

MEDICARE UTILIZATION · PART B · 2024

Total beneficiaries

1,760

Unique beneficiaries

—

Total services

3,099

Distinct HCPCS

Medicare payment

$213K

Peer benchmark

Total Medicare services vs. 10,499 Internal Medicine providers in CA — top quintile (cohort median 531).

PRESCRIBING · PART D · 2024

Total Rx claims

16,205

Beneficiaries

—

Total drug cost

$1.8M

Distinct drugs

192

Brand share

25.4%

Top prescribed drugs

Atorvastatin Calcium946 claims

Amlodipine Besylate761 claims

Hydrocodone/Acetaminophen730 claims

Metformin Hcl551 claims

Metoprolol Succinate417 claims

QUALITY · MIPS · 2024

Final MIPS score

83.2

Quality

60.0

Cost

80.7

Improvement activities

40.0

Promoting interop.

0.0

Payment adjustment

0.35%

Individual

INDUSTRY PAYMENTS · OPEN PAYMENTS · 2024

Total received

$726

Payment records

By payment type

Food and Beverage$618

Education$107

Top paying entities

Food and Beverage$618

Education$107

REFERRAL NETWORK

Where William Chen's patients come from & go

Directional shared-patient flow from Medicare claims — who sends patients to this provider (inbound) and where this provider's patients go next (outbound). 25 inbound referrers · 0 outbound destinations.

Receives referrals from

Inbound — who sends patients here

Physician	Patients	Visits
SUTTER EAST BAY HOSPITALS	83	306
Hayden Evans Diagnostic Radiology · Oakland, CA	71	181
KAISER FOUNDATION HOSPITALS	71	188
CONTRA COSTA COUNTY	69	262
Community Mobile Diagnostics Llc Portable X-Ray Supplier · San Leandro, CA	46	262
UY, JONATHAN	46	216
Gary Marcus Cardiology · San Pablo, CA	39	113
Phillip Wright General Practice · Oakland, CA	36	76
Kc Imaging, Llc Independent Diagnostic Testing Facility (IDTF) · Richmond, CA	32	46
Teresa Van Woy Podiatry · San Pablo, CA	32	84
ZISMAN, KATERINA	27	55
Bruce Carlton Dermatology · Vacaville, CA	20	68

Refers patients to

Outbound — where patients go next

No outbound pairs above the suppression threshold.

Source: CMS Physician Shared Patient Patterns (30-day window, Medicare FFS). Direction = a beneficiary seen by the first provider, then the second, within 30 days; a proxy for referral, not a documented referral. Pairs with fewer than 11 shared beneficiaries are suppressed.

CROSS-REFERENCE

Related data on other Healthparse brands

ProviderScore

OIG/SAM exclusion screening, sanctions history

Healthparse Signals

Monitor this provider for changes — dated NPI change events