John Graham, M.D., PH.D
NPI 1225440746 · Endocrinology, Diabetes & Metabolism Physician · San Francisco, CA
Enrolled with Medicare as Practitioner - Endocrinology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
John Graham, M.D., PH.D is a Endocrinology, Diabetes & Metabolism Physician provider in San Francisco, CA (NPI 1225440746).
Provider details
- NPI number
- 1225440746
- Entity type
- Individual
- Primary specialty
- Endocrinology, Diabetes & Metabolism PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D., PH.D
- Sex
- Male
- Sole proprietor
- No
- License
- 288970-1 (NY)
Specialties & taxonomies
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
12 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
4 documented practice locations
- Medicare service volume (vs. specialty peers)28% of score
1,029 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 | 288 | $141 |
| Visit Complexity Inherent to Evaluation and Management Associated With Medical Care Services That Serve As the Continuing Focal Point for All Needed Health Care Services And/Or With Medical Care Services That Are Part of Ongoing Care Related to a Patient'SG2211 | 179 | $18 |
| Insertion of Needle Into Vein for Collection of Blood Sample36415 | 131 | $9 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 96 | $100 |
| Continuous Monitoring of Blood Sugar Level in Tissue Fluid Using Sensor Under Skin With Interpretation and Report95251 | 80 | $37 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 62 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Semaglutidebrand: Ozempic | 387 | 101 |
| Metformin Hclbrand: Metformin Hcl Er | 320 | 118 |
| Levothyroxine Sodium | 283 | 93 |
| Tirzepatidebrand: Mounjaro | 246 | 67 |
| Metformin Hcl | 174 | 74 |
| Insulin Aspartbrand: Novolog Flexpen | 164 | 45 |
Practice location
Mailing address
Additional practice locations (3)
- 300 Cadman Plz W Fl 18Brooklyn, NY 11201-3226Phone: (929) 210-6000Fax: (929) 210-6005
- 1 Gustave L Levy PlNew York, NY 10029-6504Phone: (212) 241-6500
- 5 E 98th StNew York, NY 10029-6501Phone: (212) 241-3422
Registry dates
- Enumerated
- 2014-06-02
- Last updated
- 2025-04-18
- Certified
- 2025-04-18
Frequently asked questions
- What is John Graham's NPI number?
- John Graham's National Provider Identifier (NPI) is 1225440746, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is John Graham's specialty?
- John Graham is listed in the NPPES registry with a primary specialty of Endocrinology, Diabetes & Metabolism Physician (Allopathic & Osteopathic Physicians).
- Where is John Graham located?
- John Graham's practice location on file with NPPES is 400 Parnassus Ave # A550, San Francisco, CA 94143-2202.
- What is John Graham's phone number?
- The practice phone number listed in the NPPES registry for John Graham is (415) 353-2350.
- Does John Graham accept Medicare?
- John Graham is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is John Graham's NPI active?
- Yes — John Graham's NPI (1225440746) is active in the NPPES registry as of the last update on 2025-04-18.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.