Kevin Grumbach, MD
NPI 1114942794 · Family Medicine Physician · San Francisco, CA
Enrolled with Medicare as Practitioner - Family Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Kevin Grumbach, MD is a Family Medicine Physician provider in San Francisco, CA (NPI 1114942794).
Provider details
- NPI number
- 1114942794
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- G59564 (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
19 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
139 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 35 Minutes99232 | 98 | $88 |
| Hospital Discharge Day Management, More Than 30 Minutes99239 | 28 | $131 |
| Initial Hospital Care With Moderate Level of Medical Decision Making, If Using Time, at Least 75 Minutes99223 | 13 | $194 |
Typical Medicare-allowed amounts for these services range $88–$194 (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 · 36 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 53 | 14 |
| Amlodipine Besylate | 39 | 12 |
| Metformin Hcl | 36 | — |
| Tamsulosin Hcl | 31 | — |
| Omeprazole | 29 | — |
| Albuterol Sulfatebrand: Albuterol Sulfate Hfa | 26 | — |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-07-13
- Last updated
- 2007-07-08
Frequently asked questions
- What is Kevin Grumbach's NPI number?
- Kevin Grumbach's National Provider Identifier (NPI) is 1114942794, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Kevin Grumbach's specialty?
- Kevin Grumbach is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Kevin Grumbach located?
- Kevin Grumbach's practice location on file with NPPES is 1001 Potrero Ave, San Francisco, CA 94110-3518.
- What is Kevin Grumbach's phone number?
- The practice phone number listed in the NPPES registry for Kevin Grumbach is (415) 206-8651.
- Does Kevin Grumbach accept Medicare?
- Kevin Grumbach is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Kevin Grumbach's NPI active?
- Yes — Kevin Grumbach's NPI (1114942794) is active in the NPPES registry as of the last update on 2007-07-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.