Wendy Zhen, OD
NPI 1356901854 · Optometrist · San Francisco, CA
Enrolled with Medicare as Practitioner - Optometry · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Wendy Zhen, OD is a Optometrist provider in San Francisco, CA (NPI 1356901854).
Provider details
- NPI number
- 1356901854
- Entity type
- Individual
- Primary specialty
- OptometristEye and Vision Services Providers
- Credential
- OD
- Sex
- Female
- Sole proprietor
- No
- License
- TUV008945-01 (NY)
Specialties & taxonomies
Eye and Vision Services Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
7 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
523 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 | 58 | $109 |
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 56 | $162 |
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 54 | $161 |
| Imaging of Retina92134 | 47 | $29 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 44 | $73 |
| Imaging of Optic Nerve92133 | 37 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 3 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Latanoprost | 43 | 13 |
| Prednisolone Acetate | 15 | 11 |
| Dorzolamide Hcl/Timolol Maleatbrand: Dorzolamide-Timolol | 13 | — |
Medicare Part D only. These counts cover prescriptions paid through Medicare Part D in 2024 — they do notinclude cash-pay, commercial-insurance, Medicaid, or Part B–administered drugs, and badly undercount high cash-pay categories (e.g. GLP-1 weight-loss, testosterone, and ED medications). Any drug with 10 or fewer claims is omitted by CMS, and beneficiary counts under 11 are suppressed — so a missing drug means no Part D record, never zero. This is a factual claims summary, not an endorsement, not medical advice, and not a consumer report. Source: CMS Medicare Part D Prescribers — by Provider and Drug.
Practice location
Mailing address
Registry dates
- Enumerated
- 2019-06-17
- Last updated
- 2023-08-08
- Certified
- 2023-08-08
Frequently asked questions
- What is Wendy Zhen's NPI number?
- Wendy Zhen's National Provider Identifier (NPI) is 1356901854, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Wendy Zhen's specialty?
- Wendy Zhen is listed in the NPPES registry with a primary specialty of Optometrist (Eye and Vision Services Providers).
- Where is Wendy Zhen located?
- Wendy Zhen's practice location on file with NPPES is 490 Illinois St, San Francisco, CA 94143-2510.
- What is Wendy Zhen's phone number?
- The practice phone number listed in the NPPES registry for Wendy Zhen is (415) 353-2020.
- Does Wendy Zhen accept Medicare?
- Wendy Zhen is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Wendy Zhen's NPI active?
- Yes — Wendy Zhen's NPI (1356901854) is active in the NPPES registry as of the last update on 2023-08-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.