John Murphy, M.D.
NPI 1437119591 · Internal Medicine Physician · Oakland, CA
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
John Murphy, M.D. is a Internal Medicine Physician provider in Oakland, CA (NPI 1437119591).
Provider details
- NPI number
- 1437119591
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 46482 (MN)
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
12 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) |
|---|---|---|
| Hemoglobin A1c Level83036 | 12 | $4 |
Typical Medicare-allowed amounts for these services range $4–$4 (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 · 16 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 48 | 17 |
| Amlodipine Besylate | 29 | 14 |
| Gabapentin | 27 | — |
| Albuterol Sulfatebrand: Albuterol Sulfate Hfa | 24 | — |
| Losartan Potassium | 23 | 11 |
| Famotidine | 19 | — |
| Lisinopril |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-03-24
- Last updated
- 2019-09-16
Frequently asked questions
- What is John Murphy's NPI number?
- John Murphy's National Provider Identifier (NPI) is 1437119591, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is John Murphy's specialty?
- John Murphy is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is John Murphy located?
- John Murphy's practice location on file with NPPES is 1515 Fruitvale Avenue, Oakland, CA 94601-2322.
- What is John Murphy's phone number?
- The practice phone number listed in the NPPES registry for John Murphy is (510) 535-6300.
- Does John Murphy accept Medicare?
- John Murphy is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is John Murphy's NPI active?
- Yes — John Murphy's NPI (1437119591) is active in the NPPES registry as of the last update on 2019-09-16.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.