NPPES file of Aug 9, 2026

Luis Alfonso Fernandez, M.D.

Psychiatry Physician · Palo Alto, CA

Luis Alfonso Fernandez, M.D. is a psychiatry physician with a practice address in Palo Alto, California, and NPI 1639440977, issued on Jan 18, 2012. Check the license (California A184052, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1639440977
Name
Luis Alfonso Fernandez
Credential
M.D.
Primary taxonomy
Psychiatry Physician 2084P0800X
License number
A184052 CA
Self-reported in NPPES; status is on the state search
Practice location
401 Quarry RD, Palo Alto, CA 94304
Phone
(650) 723-6643
Enumerated
Jan 18, 2012
Record last updated
Apr 13, 2023
Fax
(650) 723-4655
Medicare enrollment
Enrolled (PECOS I20230918003873); accepts Medicare assignment
Medical or professional school
University Of California, Davis School Of Medicine, 2020
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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Also registered at 401 Quarry RD

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Richard Abbey, PH.D.Clinical Neuropsychologist1730377649
  2. Dorothy Adu-Amankwah, MDPsychiatry Physician1932900313
  3. Nakul AggarwalStudent in an Organized Health Care Education/Training Program1881495976
  4. Rosa Ahn-Horst, MD MPHPsychiatry Physician1649822420
  5. Kelley Anderson, M.S., M.A., PHDPsychologist1851777999
  6. Robin Apple, PH.D.Psychologist1134284912

Verify Luis Alfonso Fernandez in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of California
    Search for license A184052
    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Open the California license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

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Bills Medicare through one group practice

  1. County OF San MateoSan Mateo, CA

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

Luis Alfonso Fernandez among 8,673 psychiatry physician records in California

Luis Alfonso Fernandez, M.D. is one of 8,673 psychiatry physician 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 2012, is newer than 66% of them.

  • NPI issued2012 · 66% of these records are older, 31% newer
  • In a Medicare fileYes · 67% of these records are
  • In the CMS Doctors and Clinicians fileYes · 38% of these records are
  • Graduated2020 · median 2005 among the 3,295 with a school on file
  • Record last updated2023 · 54% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2084P0800X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

215 psychiatry physician records list a practice address in Palo Alto

They are 215 of the 7,617 NPPES records with a practice address in Palo Alto, and 8,673 psychiatry physician records in California.

The 8 psychiatry physician records with the nearest ZIP codes

  1. Elias Aboujaoude, MDPalo Alto, CA 943041649209768
  2. Steven Bagley, MDPalo Alto, CA 943041730125048
  3. Justin Birnbaum, M.D.Palo Alto, CA 943041013007848
  4. Kim Bullock, M.D.Palo Alto, CA 943041790842763
  5. Christopher Capelle, MDPalo Alto, CA 943041902919640
  6. John Dorfman, M. D.Palo Alto, CA 943041912944687
  7. Carla Galloway, M.D.Palo Alto, CA 943041790881506
  8. Robert Hayward, MD, MPHPalo Alto, CA 943041437216744

Common questions

What is Luis Alfonso Fernandez, M.D.'s NPI number?

Luis Alfonso Fernandez, M.D.'s National Provider Identifier (NPI) is 1639440977, issued on Jan 18, 2012. An NPI identifies a provider in billing; it is not a license.

Where is Luis Alfonso Fernandez, M.D. located?

The NPPES record lists a practice address at 401 Quarry RD, Palo Alto, CA, 94304. Phone: (650) 723-6643. Providers update this record themselves, so call before visiting.

How can I verify Luis Alfonso Fernandez, M.D.'s license?

NPPES lists California license number A184052, as entered by the provider. Search the Medical Board of California at https://www.mbc.ca.gov/License-Verification/default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.

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.