MR. ALBERTO GUILLERMO HERNANDEZ FNP-C
NPI 1285910976
Nurse Practitioner - Family in Martinez, CA
About Mr. Alberto Guillermo Hernandez Fnp-c NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MR. ALBERTO GUILLERMO HERNANDEZ FNP-C (NPI 1285910976) is an individual family provider in Martinez, California, licensed in California (21625) and active in the NPI registry since October 2011. He is enrolled in Medicare PECOS.
NPPES Registry Identity
Specialties & Licenses 2
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Mr. Alberto Guillermo Hernandez Fnp-c is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignments
2Medicare enrollment records show Alberto Hernandez reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Martinez, CA 94553
- Reassigned Medicare billing, California enrollment
- 530 clinicians in this Medicare group
Fairfield, CA 94533
- Reassigned Medicare billing, California enrollment
- 51 clinicians in this Medicare group
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 94553 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Other Providers at the Same Location NPPES 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
MARTINEZ, CA 94553
Frequently Asked Questions NPPES & CMS
Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.
What is Alberto Hernandez's NPI number?
The NPI number for Alberto Hernandez is 1285910976. It was assigned to this individual provider in the NPPES registry on October 26, 2011.
Where is Alberto Hernandez located?
Alberto Hernandez practices at 2500 Alhambra Ave, Martinez, CA 94553. The listed phone number is (925) 370-5000.
What is Alberto Hernandez's specialty?
The primary specialty registered for this NPI is Nurse Practitioner, specializing in Family, with taxonomy code 363LF0000X.
Is Alberto Hernandez enrolled in Medicare?
Yes. Alberto Hernandez is registered in the Medicare PECOS enrollment system.
Which organizations bill Medicare for Alberto Hernandez's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Alberto Hernandez reassigns Medicare benefits to 2 organizations: Contra Costa County (Martinez, CA) and Snf Specialists Medical Corporation (Fairfield, CA). Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Alberto Hernandez's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
When was this NPI record last updated?
The NPPES record for Alberto Hernandez was last updated on May 5, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.
# Mr. Alberto Guillermo Hernandez, FNP-C · NPI 1285910976
Family physician in Martinez, California. Individual provider, active in the CMS NPPES registry since October 26, 2011.
## Identity
- **NPI:** 1285910976 (Entity type: Individual)
- **Enumerated:** October 26, 2011
- **Primary specialty:** Nurse Practitioner - Family · taxonomy 363LF0000X
- **State license:** 21625 (California)
- **Sole proprietor:** No
## Practice location
- **Address:** 2500 ALHAMBRA AVE, Martinez, CA 94553-3156
- **Phone:** (925) 370-5000
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** 2 organizations under Medicare reassignment (form CMS-855R): Contra Costa County (NPI 1386719086, Martinez, CA); Snf Specialists Medical Corporation (NPI 1497265565, Fairfield, CA) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** May 5, 2026
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Source: [NPI Profile](https://npiprofile.com/npi/1285910976) · Data from the CMS NPPES public registry.