David Nidorf, MD
NPI 1336186121 · Family Medicine Physician · San Francisco, CA
Enrolled with Medicare as Practitioner - Family Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
David Nidorf, MD is a Family Medicine Physician provider in San Francisco, CA (NPI 1336186121).
Provider details
- NPI number
- 1336186121
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- A49983 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
20 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
486 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) |
|---|---|---|
| Emergency Department Visit With High Level of Medical Decision Making99285 | 298 | $182 |
| Emergency Department Visit With Moderate Level of Medical Decision Making99284 | 134 | $126 |
| Emergency Department Visit With Low Level of Medical Decision Making99283 | 28 | $74 |
| Critical Care, First 30-74 Minutes99291 | 26 | $221 |
Typical Medicare-allowed amounts for these services range $74–$221 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 8 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Amoxicillin/Potassium Clavbrand: Amoxicillin-Clavulanate Potass | 30 | 30 |
| Ondansetronbrand: Ondansetron Odt | 27 | 27 |
| Oxycodone Hcl/Acetaminophenbrand: Oxycodone-Acetaminophen | 26 | 26 |
| Prednisone | 23 | 23 |
| Cephalexin | 16 | 16 |
| Cefuroxime Axetilbrand: Cefuroxime | 15 | 15 |
| Sulfamethoxazole/Trimethoprim |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-06-01
- Last updated
- 2022-11-01
- Certified
- 2022-11-01
Frequently asked questions
- What is David Nidorf's NPI number?
- David Nidorf's National Provider Identifier (NPI) is 1336186121, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is David Nidorf's specialty?
- David Nidorf is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is David Nidorf located?
- David Nidorf's practice location on file with NPPES is 3555 Cesar Chavez, San Francisco, CA 94110-4403.
- What is David Nidorf's phone number?
- The practice phone number listed in the NPPES registry for David Nidorf is (415) 641-6625.
- Does David Nidorf accept Medicare?
- David Nidorf is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is David Nidorf's NPI active?
- Yes — David Nidorf's NPI (1336186121) is active in the NPPES registry as of the last update on 2022-11-01.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.