Mathew Hernandez, MD
NPI 1790892321 · Internal Medicine Physician · Palo Alto, CA
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Mathew Hernandez, MD is a Internal Medicine Physician provider in Palo Alto, CA (NPI 1790892321).
Provider details
- NPI number
- 1790892321
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- A90684 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
19 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
18,990 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
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 .
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) |
|---|---|---|
| Admn Sarscov2 Vacc 1 Dose90480 | 9,619 | $51 |
| Administration of Influenza Virus VaccineG0008 | 9,109 | $38 |
| Office Or Other Outpatient Visit for the Evaluation and Management of Established Patient That May Not Require Presence of Healthcare Professional99211 | 212 | $30 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 26 | $155 |
| Annual Wellness Visit, Includes a Personalized Prevention Plan of Service (pps), Subsequent VisitG0439 | 24 | $157 |
Typical Medicare-allowed amounts for these services range $30–$157 (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 · 10 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 50 | 15 |
| Losartan Potassium | 39 | 13 |
| Amlodipine Besylate | 23 | — |
| Metformin Hclbrand: Metformin Hcl Er | 16 | — |
| Montelukast Sodium | 15 | — |
| Levothyroxine Sodium | 14 | — |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$51 across 1 record (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-08-23
- Last updated
- 2020-05-20
- Certified
- 2020-05-20
Frequently asked questions
- What is Mathew Hernandez's NPI number?
- Mathew Hernandez's National Provider Identifier (NPI) is 1790892321, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mathew Hernandez's specialty?
- Mathew Hernandez is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Mathew Hernandez located?
- Mathew Hernandez's practice location on file with NPPES is 795 El Camino Real, Palo Alto, CA 94301-2302.
- What is Mathew Hernandez's phone number?
- The practice phone number listed in the NPPES registry for Mathew Hernandez is (650) 853-2977.
- Does Mathew Hernandez accept Medicare?
- Mathew Hernandez is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Mathew Hernandez's NPI active?
- Yes — Mathew Hernandez's NPI (1790892321) is active in the NPPES registry as of the last update on 2020-05-20.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.