Seth Blumberg, MD PHD
NPI 1255595443 · Hospitalist Physician · San Francisco, CA
Enrolled with Medicare as Practitioner - Hospitalist · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Seth Blumberg, MD PHD is a Hospitalist Physician provider in San Francisco, CA (NPI 1255595443).
Provider details
- NPI number
- 1255595443
- Entity type
- Individual
- Primary specialty
- Hospitalist PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD PHD
- Sex
- Male
- Sole proprietor
- Yes
- License
- AFE112063 (CA)
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
17 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
189 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) |
|---|---|---|
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 50 Minutes99233 | 75 | $131 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes99232 | 49 | $87 |
| Hospital Discharge Day Management, More Than 30 Minutes99239 | 23 | $130 |
| Initial Hospital Care With Straightforward Or Low-Level Medical Decision Making, If Using Time, at Least 55 Minutes99222 | 21 | $145 |
| Initial Hospital Care With Moderate Level of Medical Decision Making, If Using Time, at Least 75 Minutes99223 | 21 | $183 |
Typical Medicare-allowed amounts for these services range $87–$183 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, 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.
Practice location
Mailing address
Registry dates
- Enumerated
- 2008-07-16
- Last updated
- 2022-02-24
- Certified
- 2022-02-24
Frequently asked questions
- What is Seth Blumberg's NPI number?
- Seth Blumberg's National Provider Identifier (NPI) is 1255595443, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Seth Blumberg's specialty?
- Seth Blumberg is listed in the NPPES registry with a primary specialty of Hospitalist Physician (Allopathic & Osteopathic Physicians).
- Where is Seth Blumberg located?
- Seth Blumberg's practice location on file with NPPES is 505 Parnassus Ave, San Francisco, CA 94143.
- What is Seth Blumberg's phone number?
- The practice phone number listed in the NPPES registry for Seth Blumberg is (415) 750-4993.
- Does Seth Blumberg accept Medicare?
- Seth Blumberg is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Seth Blumberg's NPI active?
- Yes — Seth Blumberg's NPI (1255595443) is active in the NPPES registry as of the last update on 2022-02-24.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.