Ervin Wong, M.D.
NPI 1386674471 · Ophthalmology Physician · San Francisco, CA
Enrolled with Medicare as Practitioner - Ophthalmology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Ervin Wong, M.D. is a Ophthalmology Physician provider in San Francisco, CA (NPI 1386674471).
Provider details
- NPI number
- 1386674471
- Entity type
- Individual
- Primary specialty
- Ophthalmology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- Yes
- License
- A811700 (NY)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Other Service Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
19 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
852 Medicare services, 2024 (ranked within specialty)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 384 | $153 |
| Photography of the Retina92250 | 130 | $47 |
| Imaging of Retina92134 | 127 | $50 |
| New Patient Office Or Other Outpatient Visit With Moderate Level of Medical Decision Making, If Using Time, 45 Minutes Or More99204 | 58 | $198 |
| Exam of Visual Field With Extended Testing92083 | 49 | $82 |
| New Patient Office Or Other Outpatient Visit With a High Level of Medical Decision Making, If Using Time, 60 Minutes Or More99205 | 41 | $259 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 16 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Latanoprost | 713 | 202 |
| Azelastine Hcl | 563 | 261 |
| Timolol Maleate | 345 | 97 |
| Prednisolone Acetate | 238 | 149 |
| Moxifloxacin Hclbrand: Moxifloxacin | 97 | 70 |
| Ofloxacin | 94 | 60 |
| Ketorolac Tromethamine | 73 | 29 |
| Brimonidine Tartrate | 70 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-07-04
- Last updated
- 2020-04-02
- Certified
- 2020-04-02
Frequently asked questions
- What is Ervin Wong's NPI number?
- Ervin Wong's National Provider Identifier (NPI) is 1386674471, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Ervin Wong's specialty?
- Ervin Wong is listed in the NPPES registry with a primary specialty of Ophthalmology Physician (Allopathic & Osteopathic Physicians).
- Where is Ervin Wong located?
- Ervin Wong's practice location on file with NPPES is 728 Pacific Ave, San Francisco, CA 94133-4457.
- What is Ervin Wong's phone number?
- The practice phone number listed in the NPPES registry for Ervin Wong is (415) 837-0861.
- Does Ervin Wong accept Medicare?
- Ervin Wong is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Ervin Wong's NPI active?
- Yes — Ervin Wong's NPI (1386674471) is active in the NPPES registry as of the last update on 2020-04-02.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.