Paul Peng, O.D.
NPI 1013049840 · Optometrist · Castro Valley, CA
Enrolled with Medicare as Practitioner - Optometry · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Paul Peng, O.D. is a Optometrist provider in Castro Valley, CA (NPI 1013049840).
Provider details
- NPI number
- 1013049840
- Entity type
- Individual
- Primary specialty
- OptometristEye and Vision Services Providers
- Credential
- O.D.
- Sex
- Male
- Sole proprietor
- Yes
- License
- 8665TGLC (CA)
Specialties & taxonomies
Eye and Vision Services Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
19 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
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 prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 4 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Latanoprost | 49 | 24 |
| Cyclosporine | 18 | — |
| Timolol Maleate | 17 | — |
| Levobunolol Hcl | 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
- 2007-03-09
- Last updated
- 2022-02-11
Frequently asked questions
- What is Paul Peng's NPI number?
- Paul Peng's National Provider Identifier (NPI) is 1013049840, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Paul Peng's specialty?
- Paul Peng is listed in the NPPES registry with a primary specialty of Optometrist (Eye and Vision Services Providers).
- Where is Paul Peng located?
- Paul Peng's practice location on file with NPPES is 4041 E Castro Valley Blvd, Castro Valley, CA 94552-4840.
- What is Paul Peng's phone number?
- The practice phone number listed in the NPPES registry for Paul Peng is (510) 881-8343.
- Does Paul Peng accept Medicare?
- Paul Peng is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Paul Peng's NPI active?
- Yes — Paul Peng's NPI (1013049840) is active in the NPPES registry as of the last update on 2022-02-11.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.