Robert Baron, MD, MS
NPI 1558326603 · Internal Medicine Physician · San Francisco, CA
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Robert Baron, MD, MS is a Internal Medicine Physician provider in San Francisco, CA (NPI 1558326603).
Provider details
- NPI number
- 1558326603
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD, MS
- Sex
- Male
- Sole proprietor
- No
- License
- G41928 (CA)
Specialties & taxonomies
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
462 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) |
|---|---|---|
| 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 | 180 | $18 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 178 | $109 |
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 85 | $162 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 19 | $73 |
Typical Medicare-allowed amounts for these services range $18–$162 (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 · 42 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 228 | 75 |
| Losartan Potassium | 94 | 29 |
| Amlodipine Besylate | 71 | 23 |
| Metoprolol Succinate | 56 | 17 |
| Tamsulosin Hcl | 48 | 16 |
| Hydrochlorothiazide | 47 | 17 |
| Metformin Hcl |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-04-20
- Last updated
- 2012-08-31
Frequently asked questions
- What is Robert Baron's NPI number?
- Robert Baron's National Provider Identifier (NPI) is 1558326603, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Robert Baron's specialty?
- Robert Baron is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Robert Baron located?
- Robert Baron's practice location on file with NPPES is 400 Parnassus Ave, San Francisco, CA 94143-2202.
- What is Robert Baron's phone number?
- The practice phone number listed in the NPPES registry for Robert Baron is (415) 353-4624.
- Does Robert Baron accept Medicare?
- Robert Baron is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Robert Baron's NPI active?
- Yes — Robert Baron's NPI (1558326603) is active in the NPPES registry as of the last update on 2012-08-31.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.