NPPES file of Aug 9, 2026

Howard Fenn, MD

Psychiatry Physician · Los Altos, CA

Howard Fenn, MD is a psychiatry physician with a practice address in Los Altos, California, and NPI 1396754743, issued on Aug 5, 2006. Check the license (California G23934, 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
1396754743
Name
Howard Fenn
Credential
MD
Primary taxonomy
Psychiatry Physician 2084P0800X
License number
G23934 CA
Self-reported in NPPES; status is on the state search
Practice location
4546 EL Camino Real Ste B7, Los Altos, CA 94022
Phone
(650) 743-0629
Enumerated
Aug 5, 2006
Record last updated
Apr 15, 2024
Fax
(650) 260-6030
Medicare enrollment
Enrolled (PECOS I20050131000521); accepts Medicare assignment
Medical or professional school
Loyola University Of Chicago, Stritch School Of Medicine, 1971
Telehealth
Offers telehealth (CMS)
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 4546 EL Camino Real Ste B7

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

  1. Joseph Burwell, D.O.Psychiatry Physician1174960496
  2. Victoria Chan, NDNaturopath1669072682
  3. Swapnil Khurana, M.D.Psychosomatic Medicine Physician1992052658
  4. Richard Knowles, M.A.Mental Health Counselor1588914139
  5. Andrea Lee, NPPsychiatric/Mental Health Nurse Practitioner1700167681
  6. Aimee McArthur, DOPsychiatry Physician1194286575

Verify Howard Fenn in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of California
    Search for license G23934
    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. Integrative Behavioral Health And Medicine IncLos Altos, CA

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

30 psychiatry physician records list a practice address in Los Altos

They are 30 of the 718 NPPES records with a practice address in Los Altos, and 8,673 psychiatry physician records in California.

Other psychiatry physician records in California

  1. Nancy Aaen, MDNapa, CA1609816669
  2. Criselda Abad-Santos, M.D.Woodland Hills, CA1760461826
  3. Mekabiz Abaian, MDSan Bernardino, CA1891090163
  4. Brenda Abarca, MDTorrance, CA1407485527
  5. Pilar Abascal, M.D.Los Angeles, CA1730528191
  6. Michele Abbasi, M.D.Westlake Village, CA1093940330
  7. Zohaib AbbasiMartinez, CA1013392224
  8. Sandy Abdelkedous, MDFresno, CA1306093109
  9. Nancy Abdelmalak, M.D.Elk Grove, CA1912137498
  10. Ezzat Abdelmalek, M.DDana Point, CA1992828826

Common questions

What is Howard Fenn, MD's NPI number?

Howard Fenn, MD's National Provider Identifier (NPI) is 1396754743, issued on Aug 5, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Howard Fenn, MD located?

The NPPES record lists a practice address at 4546 EL Camino Real Ste B7, Los Altos, CA, 94022. Phone: (650) 743-0629. Providers update this record themselves, so call before visiting.

How can I verify Howard Fenn, MD's license?

NPPES lists California license number G23934, 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.