Blake Gregory, M.D.
NPI 1881912129 · Internal Medicine Physician · Oakland, CA
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Blake Gregory, M.D. is a Internal Medicine Physician provider in Oakland, CA (NPI 1881912129).
Provider details
- NPI number
- 1881912129
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Female
- Sole proprietor
- No
- License
- A119282 (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
16 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
199 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) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 55 | $155 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 53 | $110 |
| Established Patient Office Or Other Outpatient Visit With Straightforward Medical Decision Making, If Using Time, 10 Minutes Or More99212 | 35 | $70 |
| Admn Sarscov2 Vacc 1 Dose90480 | 31 | $25 |
| Administration of Influenza Virus VaccineG0008 | 25 | $6 |
Typical Medicare-allowed amounts for these services range $6–$155 (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 · 59 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 164 | 38 |
| Amlodipine Besylate | 92 | 23 |
| Metformin Hcl | 68 | 14 |
| Furosemide | 64 | — |
| Gabapentin | 61 | 11 |
| Tamsulosin Hcl | 51 | 15 |
| Losartan Potassium | 48 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2010-05-11
- Last updated
- 2014-08-15
Frequently asked questions
- What is Blake Gregory's NPI number?
- Blake Gregory's National Provider Identifier (NPI) is 1881912129, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Blake Gregory's specialty?
- Blake Gregory is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Blake Gregory located?
- Blake Gregory's practice location on file with NPPES is 1411 E 31st St, Oakland, CA 94602-1018.
- What is Blake Gregory's phone number?
- The practice phone number listed in the NPPES registry for Blake Gregory is (214) 537-8323.
- Does Blake Gregory accept Medicare?
- Blake Gregory is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Blake Gregory's NPI active?
- Yes — Blake Gregory's NPI (1881912129) is active in the NPPES registry as of the last update on 2014-08-15.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.