Ervin Patrick Wong, M.D.
Ophthalmology Physician · San Francisco, CA
Ervin Patrick Wong, M.D. is an ophthalmology physician with a practice address in San Francisco, California, and NPI 1386674471, issued on Jul 4, 2006. Check the license (California A81170, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Ervin Patrick Wong
- Credential
- M.D.
- Primary taxonomy
- Ophthalmology Physician 207W00000X
- License numbers
- A81170 CA
A811700 NY
Self-reported in NPPES; status is on the state search - Practice location
- 728 Pacific Ave, San Francisco, CA 94133
- Phone
- (415) 837-0861
- Enumerated
- Jul 4, 2006
- Record last updated
- Apr 2, 2020 (not updated in 6 years: call before relying on the address or phone)
- Fax
- (415) 986-1932
- Medicare enrollment
- Enrolled (PECOS I20120224000533); accepts Medicare assignment
- Medical or professional school
- Loma Linda University School Of Medicine, 1998
- Entity
- Type 1 · individual
8 nearest ophthalmology physician records → All 2,899 in California → Look up another NPI →
Also registered at 728 Pacific Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Ervin Patrick Wong in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A81170Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
66% more Medicare Part D claims than the average ophthalmology physician in 2024
2,525 Medicare Part D claims for 649 beneficiaries, against an average of 1,518 among the 16,459 providers of this specialty who prescribed in Part D. Brand-name drugs were 27% of claims.
Most prescribed
- Latanoprost713 claims
- Azelastine Hcl563 claims
- Timolol Maleate345 claims
- Prednisolone Acetate238 claims
- Moxifloxacin97 claims
- Ofloxacin94 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Ervin Patrick Wong among 2,899 ophthalmology physician records in California
Ervin Patrick Wong, M.D. is one of 2,899 ophthalmology physician records with a practice address in California. 79% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 9% of them.
- NPI issued2006 · 9% of these records are older, 45% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 66% of these records are
- Graduated1998 · median 2001 among the 1,907 with a school on file
- Record last updated2020 · 67% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207W00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Ophthalmology Physician providers in California
There are 2,899 ophthalmology physician records in California.
All 2,899 in California → Every provider in San Francisco → Ophthalmology Physician nationwide →
The 8 ophthalmology physician records with the nearest ZIP codes
- Bruce Spivey, M.D.San Francisco, CA 941331376761494
- Earl Stern, M.D.San Francisco, CA 941321740617273
- Kevin Tan, M.D.San Francisco, CA 941321063654978
- Lillie Mosaddegh, MDSan Francisco, CA 941271487712071
- Khalid Tabbara, M.D.San Francisco, CA 941271972964971
- Joseph Crawford, MDSan Francisco, CA 941431831141712
- Eugene De Juan, MDSan Francisco, CA 941431043262074
- Jacque Duncan, MDSan Francisco, CA 941431942252978
Common questions
What is Ervin Patrick Wong, M.D.'s NPI number?
Ervin Patrick Wong, M.D.'s National Provider Identifier (NPI) is 1386674471, issued on Jul 4, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Ervin Patrick Wong, M.D. located?
The NPPES record lists a practice address at 728 Pacific Ave, San Francisco, CA, 94133. Phone: (415) 837-0861. Providers update this record themselves, so call before visiting.
How can I verify Ervin Patrick Wong, M.D.'s license?
NPPES lists California license number A81170, as entered by the provider. Search the Medical Board of California at https://www.mbc.ca.gov/License-Verification/default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Ervin Patrick Wong, M.D. prescribe under Medicare Part D?
In 2024, Ervin Patrick Wong, M.D. had 2,525 Medicare Part D claims for 649 beneficiaries; the average among ophthalmology physician prescribers was 1,518. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.