PROVIDER PROFILE · NPI 1386674471

Ervin WongM.D.

OphthalmologySan Francisco, CAI

MEDICARE UTILIZATION · PART B · 2024

Total beneficiaries

641

Unique beneficiaries

—

Total services

852

Distinct HCPCS

Medicare payment

$93K

Peer benchmark

Total Medicare services vs. 2,144 Ophthalmology providers in CA — below median (cohort median 1,859).

PRESCRIBING · PART D · 2024

Total Rx claims

2,446

Beneficiaries

—

Total drug cost

$82K

Distinct drugs

Brand share

10.3%

Top prescribed drugs

Latanoprost713 claims

Azelastine Hcl563 claims

Timolol Maleate345 claims

Prednisolone Acetate238 claims

Moxifloxacin Hcl97 claims

QUALITY · MIPS · 2024

No data available for this provider in 2024.

INDUSTRY PAYMENTS · OPEN PAYMENTS · 2024

No data available for this provider in 2024.

REFERRAL NETWORK

Where Ervin Wong'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). 9 inbound referrers · 19 outbound destinations.

Receives referrals from

Inbound — who sends patients here

Physician	Patients	Visits
Irwin Chow Anesthesiology · San Francisco, CA	32	136
Gustin Ho Internal Medicine · San Francisco, CA	17	54
Shu Wing Chan Internal Medicine · San Francisco, CA	16	30
Wenguang Zhao Family Practice · San Francisco, CA	15	66
CHUNG YEUNG, DOROTHY	13	34
CITY & COUNTY OF SAN FRANCISCO	13	24
Victor Huie Internal Medicine · San Francisco, CA	12	24
Scott Huang Family Practice · San Francisco, CA	12	32
Man-Kit Leung Otolaryngology · San Francisco, CA	11	17

Refers patients to

Outbound — where patients go next

Physician	Patients	Visits
CHINESE HOSPITAL ASSOCIATION	135	512
NORTH EAST MEDICAL SERVICES	33	88
Roger Eng Diagnostic Radiology · San Francisco, CA	30	55
Eric Wang Diagnostic Radiology · Santa Cruz, CA	27	39
Yang Sun Anesthesiology · Sacramento, CA	27	112
William Chung Internal Medicine · San Francisco, CA	23	57
Kenneth Chang Internal Medicine · San Francisco, CA	23	70
Irwin Chow Anesthesiology · San Francisco, CA	20	42
Robert Choy Podiatry · San Francisco, CA	16	30
Gustin Ho Internal Medicine · San Francisco, CA	14	31
CHUNG YEUNG, DOROTHY	13	33
UNIVERSITY OF CALIFORNIA, SAN FRANCISCO	13	22

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