NPPES file of Aug 9, 2026

Allison Horan, MD, MSC

Psychiatry Physician · San Francisco, CA

Allison Horan, MD, MSC is a psychiatry physician with a practice address in San Francisco, California, and NPI 1609403906, issued on Mar 25, 2020. Check the license (California 1609403906, 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 · Medicare files 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1609403906
Name
Allison Horan
Credential
MD, MSC
Primary taxonomy
Psychiatry Physician 2084P0800X
License number
1609403906 CA
Self-reported in NPPES; status is on the state search
Practice location
401 Parnassus Ave # 984, San Francisco, CA 94143
Phone
(415) 476-7527
Enumerated
Mar 25, 2020
Record last updated
Oct 24, 2023
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). A record is not a license: verify it with the state board.
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Also registered at 401 Parnassus Ave # 984

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

  1. Pedro DuranPsychiatry Physician1942664842
  2. Jessica Holliday, M.D.Psychiatry Physician1114389574
  3. Diane Kim, NPNurse Practitioner1174038152
  4. Trevor Mooney, MDPsychiatry Physician1932693165
  5. Veronica Searles QuickPsychiatry Physician1790219863
  6. William SmithPsychiatry Physician1548765902

Verify Allison Horan in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of California
    Search for license 1609403906
    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

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97% fewer Medicare Part D claims than the average psychiatry physician in 2024

29 Medicare Part D claims, against an average of 1,000 among the 35,054 providers of this specialty who prescribed in Part D.

  1. Allison Horan29
  2. Specialty average1,000

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.

763 psychiatry physician records list a practice address in San Francisco

They are 763 of the 38,143 NPPES records with a practice address in San Francisco, 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 Allison Horan, MD, MSC's NPI number?

Allison Horan, MD, MSC's National Provider Identifier (NPI) is 1609403906, issued on Mar 25, 2020. An NPI identifies a provider in billing; it is not a license.

Where is Allison Horan, MD, MSC located?

The NPPES record lists a practice address at 401 Parnassus Ave # 984, San Francisco, CA, 94143. Phone: (415) 476-7527. Providers update this record themselves, so call before visiting.

How can I verify Allison Horan, MD, MSC's license?

NPPES lists California license number 1609403906, 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.

How much does Allison Horan, MD, MSC prescribe under Medicare Part D?

In 2024, Allison Horan, MD, MSC had 29 Medicare Part D claims; the average among psychiatry physician prescribers was 1,000. 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.