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

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