Gabriel Loeb, M.D., PH.D.
NPI 1649651647 · Nephrology Physician · San Francisco, CA
Enrolled with Medicare as Practitioner - Nephrology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Gabriel Loeb, M.D., PH.D. is a Nephrology Physician provider in San Francisco, CA (NPI 1649651647).
Provider details
- NPI number
- 1649651647
- Entity type
- Individual
- Primary specialty
- Nephrology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D., PH.D.
- Sex
- Male
- Sole proprietor
- Yes
- License
- 264267 (MA)
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
11 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
362 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 | 115 | $132 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes99232 | 89 | $88 |
| Hemodialysis Procedure With Physician Evaluation90935 | 77 | $79 |
| Dialysis Procedure Including 1 Evaluation90945 | 42 | $98 |
| Initial Hospital Care With Moderate Level of Medical Decision Making, If Using Time, at Least 75 Minutes99223 | 26 | $193 |
| Initial Hospital Care With Straightforward Or Low-Level Medical Decision Making, If Using Time, at Least 55 Minutes99222 | 13 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2015-06-15
- Last updated
- 2023-08-04
- Certified
- 2023-08-04
Frequently asked questions
- What is Gabriel Loeb's NPI number?
- Gabriel Loeb's National Provider Identifier (NPI) is 1649651647, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Gabriel Loeb's specialty?
- Gabriel Loeb is listed in the NPPES registry with a primary specialty of Nephrology Physician (Allopathic & Osteopathic Physicians).
- Where is Gabriel Loeb located?
- Gabriel Loeb's practice location on file with NPPES is 400 Parnassus Ave # B1, San Francisco, CA 94143-2202.
- What is Gabriel Loeb's phone number?
- The practice phone number listed in the NPPES registry for Gabriel Loeb is (415) 476-1812.
- Does Gabriel Loeb accept Medicare?
- Gabriel Loeb is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Gabriel Loeb's NPI active?
- Yes — Gabriel Loeb's NPI (1649651647) is active in the NPPES registry as of the last update on 2023-08-04.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.