Maria Massella Hernandez, NP
NPI 1962917377 · Family Medicine Physician · Oakland, CA
Enrolled with Medicare as Practitioner - Nurse Practitioner · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Maria Massella Hernandez, NP is a Family Medicine Physician provider in Oakland, CA (NPI 1962917377).
Provider details
- NPI number
- 1962917377
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- NP
- Sex
- Female
- Sole proprietor
- No
- License
- 95007332 (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
8 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
29 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 | 29 | $4 |
Typical Medicare-allowed amounts for these services range $4–$4 (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 · 17 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 48 | 22 |
| Lisinopril | 28 | — |
| Finasteride | 27 | — |
| Gabapentin | 27 | — |
| Simvastatin | 25 | — |
| Mirtazapine | 22 | — |
| Losartan Potassium | 21 | — |
Practice location
Mailing address
Registry dates
- Enumerated
- 2017-12-07
- Last updated
- 2017-12-07
Frequently asked questions
- What is Maria Massella Hernandez's NPI number?
- Maria Massella Hernandez's National Provider Identifier (NPI) is 1962917377, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Maria Massella Hernandez's specialty?
- Maria Massella Hernandez is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Maria Massella Hernandez located?
- Maria Massella Hernandez's practice location on file with NPPES is 3451 E. 12th Street, Oakland, CA 94601.
- What is Maria Massella Hernandez's phone number?
- The practice phone number listed in the NPPES registry for Maria Massella Hernandez is (510) 535-3500.
- Does Maria Massella Hernandez accept Medicare?
- Maria Massella Hernandez is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Maria Massella Hernandez's NPI active?
- Yes — Maria Massella Hernandez's NPI (1962917377) is active in the NPPES registry as of the last update on 2017-12-07.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.