Vanessa Grubbs, M.D.
NPI 1477567717 · Internal Medicine Physician · San Francisco, CA
Enrolled with Medicare as Practitioner - Nephrology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Vanessa Grubbs, M.D. is a Internal Medicine Physician provider in San Francisco, CA (NPI 1477567717).
Provider details
- NPI number
- 1477567717
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Female
- Sole proprietor
- No
- License
- A72945 (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
17 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) |
|---|---|---|
| Hemoglobin A1c Level83036 | 17 | $10 |
Typical Medicare-allowed amounts for these services range $10–$10 (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 |
|---|---|---|
| Hydrocodone/Acetaminophenbrand: Hydrocodone-Acetaminophen | 273 | 88 |
| Atorvastatin Calcium | 112 | 49 |
| Amlodipine Besylate | 92 | 47 |
| Gabapentin | 87 | 27 |
| Fluticasone Propionate | 66 | 28 |
| Metformin Hcl | 59 | 25 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-07-29
- Last updated
- 2009-05-28
Frequently asked questions
- What is Vanessa Grubbs's NPI number?
- Vanessa Grubbs's National Provider Identifier (NPI) is 1477567717, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Vanessa Grubbs's specialty?
- Vanessa Grubbs is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Vanessa Grubbs located?
- Vanessa Grubbs's practice location on file with NPPES is 400 Parnassus Ave, San Francisco, CA 94143-2202.
- What is Vanessa Grubbs's phone number?
- The practice phone number listed in the NPPES registry for Vanessa Grubbs is (415) 353-4624.
- Does Vanessa Grubbs accept Medicare?
- Vanessa Grubbs is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Vanessa Grubbs's NPI active?
- Yes — Vanessa Grubbs's NPI (1477567717) is active in the NPPES registry as of the last update on 2009-05-28.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.