PROVIDER PROFILE · NPI 1831204486

William ChungM.D.

Internal MedicineSan Francisco, CAI

MEDICARE UTILIZATION · PART B · 2024

Total beneficiaries

875

Unique beneficiaries

—

Total services

1,357

Distinct HCPCS

Medicare payment

$71K

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

3,218

Beneficiaries

—

Total drug cost

$297K

Distinct drugs

Brand share

13.9%

Top prescribed drugs

Losartan Potassium456 claims

Amlodipine Besylate293 claims

Atorvastatin Calcium249 claims

Simvastatin180 claims

Metformin Hcl136 claims

QUALITY · MIPS · 2024

No data available for this provider in 2024.

INDUSTRY PAYMENTS · OPEN PAYMENTS · 2024

Total received

$85

Payment records

By payment type

Food and Beverage$85

REFERRAL NETWORK

Where William Chung'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). 26 inbound referrers · 0 outbound destinations.

Receives referrals from

Inbound — who sends patients here

Physician	Patients	Visits
Rong Shen Family Practice · San Francisco, CA	38	108
Chuk Kwan Internal Medicine · San Francisco, CA	36	82
O'CONNOR, MICHAEL	36	58
Shu Wing Chan Internal Medicine · San Francisco, CA	33	71
NPI 1144360041	30	58
City & County Of San Francisco Ambulance Service Provider · San Francisco, CA	24	47
LOW, RANDALL	24	88
Ervin Wong Ophthalmology · San Francisco, CA	23	57
Wenguang Zhao Family Practice · San Francisco, CA	22	71
Clifford Chew Otolaryngology · San Francisco, CA	21	46
Kin-Kee Pun Internal Medicine · San Francisco, CA	19	53
BORGESON, MICHELE	17	47

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