Alberto Guillermo Hernandez, FNP-C
Family Nurse Practitioner · Martinez, CA
Alberto Guillermo Hernandez, FNP-C is a family nurse practitioner with a practice address in Martinez, California, and NPI 1285910976, issued on Oct 26, 2011. Check the license (California 21625, as entered in NPPES) with the California board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Alberto Guillermo Hernandez
- Credential
- FNP-C
- Primary taxonomy
- Family Nurse Practitioner 363LF0000X
- License numbers
- 21625 CA
771501 CA
Self-reported in NPPES; status is on the state search - Practice location
- 2500 Alhambra Ave, Martinez, CA 94553
- Phone
- (925) 370-5000
- Enumerated
- Oct 26, 2011
- Record last updated
- May 5, 2026
- Entity
- Type 1 · individual
8 nearest family nurse practitioner records → All 16,966 in California → Look up another NPI →
Also registered at 2500 Alhambra Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Alberto Guillermo Hernandez in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this profession
Search for license 21625Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
82% fewer Medicare Part D claims than the average family nurse practitioner in 2024
238 Medicare Part D claims for 60 beneficiaries, against an average of 1,305 among the 140,557 providers of this specialty who prescribed in Part D.
Most prescribed
- Gabapentin21 claims
- Buprenorphine-Naloxone16 claims
- Albuterol Sulfate Hfa14 claims
- Atorvastatin Calcium13 claims
- Amlodipine Besylate11 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Alberto Guillermo Hernandez among 16,966 family nurse practitioner records in California
Alberto Guillermo Hernandez, FNP-C is one of 16,966 family nurse practitioner records with a practice address in California. 67% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2011, is newer than 19% of them.
- NPI issued2011 · 19% of these records are older, 79% newer
- In a Medicare fileYes · 67% of these records are
- In the CMS Doctors and Clinicians fileNo · 40% of these records are
- Record last updated2026 · 42% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363LF0000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
46 family nurse practitioner records list a practice address in Martinez
They are 46 of the 1,816 NPPES records with a practice address in Martinez, and 16,966 family nurse practitioner records in California.
All 16,966 in California → Every provider in Martinez → Family Nurse Practitioner nationwide →
The 8 family nurse practitioner records with the nearest ZIP codes
- Ruben Caballero, NPMartinez, CA 945531891870879
- Larry Cooperider, NURSE PRACTITIONERMartinez, CA 945531780676247
- Jo ElliffMartinez, CA 945531154498517
- Cynthia Hellman-Wylie, MSN, FNPMartinez, CA 945531093793127
- Phyllis Howard, NPMartinez, CA 945531093885998
- Laura Keels, F.N.P.Martinez, CA 945531619925286
- Marilyn Kerkhoff, NPMartinez, CA 945531336123090
- Laura Miller, NPMartinez, CA 945531801979570
Common questions
What is Alberto Guillermo Hernandez, FNP-C's NPI number?
Alberto Guillermo Hernandez, FNP-C's National Provider Identifier (NPI) is 1285910976, issued on Oct 26, 2011. An NPI identifies a provider in billing; it is not a license.
Where is Alberto Guillermo Hernandez, FNP-C located?
The NPPES record lists a practice address at 2500 Alhambra Ave, Martinez, CA, 94553. Phone: (925) 370-5000. Providers update this record themselves, so call before visiting.
How can I verify Alberto Guillermo Hernandez, FNP-C's license?
NPPES lists California license number 21625, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.
How much does Alberto Guillermo Hernandez, FNP-C prescribe under Medicare Part D?
In 2024, Alberto Guillermo Hernandez, FNP-C had 238 Medicare Part D claims for 60 beneficiaries; the average among family nurse practitioner prescribers was 1,305. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.