Benjamin Cox, M.D.
NPI 1588939771 · Internal Medicine Physician · San Francisco, CA
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Benjamin Cox, M.D. is a Internal Medicine Physician provider in San Francisco, CA (NPI 1588939771).
Provider details
- NPI number
- 1588939771
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Student, Health Care
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
14 yrs in NPPES registry
- Profile completeness28% of score
83% of core fields populated
- Practice footprint17% of score
2 documented practice locations
- Medicare service volume (vs. specialty peers)28% of score
78 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 Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 46 | $109 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 32 | $154 |
Typical Medicare-allowed amounts for these services range $109–$154 (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 · 9 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 38 | 19 |
| Gabapentin | 30 | 15 |
| Lisinopril | 20 | — |
| Trazodone Hcl | 19 | — |
| Clonazepam | 14 | — |
| Bupropion Hclbrand: Bupropion Xl | 13 | — |
| Losartan Potassium |
Practice location
Mailing address
Additional practice locations (1)
- 2425 Geary BlvdSan Francisco, CA 94115-3358Phone: (310) 592-1990
Registry dates
- Enumerated
- 2012-03-20
- Last updated
- 2022-10-28
- Certified
- 2022-10-28
Frequently asked questions
- What is Benjamin Cox's NPI number?
- Benjamin Cox's National Provider Identifier (NPI) is 1588939771, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Benjamin Cox's specialty?
- Benjamin Cox is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Benjamin Cox located?
- Benjamin Cox's practice location on file with NPPES is 98 Gough St, San Francisco, CA 94102-5920.
- What is Benjamin Cox's phone number?
- The practice phone number listed in the NPPES registry for Benjamin Cox is (415) 291-0480.
- Does Benjamin Cox accept Medicare?
- Benjamin Cox is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Benjamin Cox's NPI active?
- Yes — Benjamin Cox's NPI (1588939771) is active in the NPPES registry as of the last update on 2022-10-28.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.