NPPES file of Aug 9, 2026

Stephanie Ma

Psychiatry Physician · San Diego, CA

Stephanie Ma is a psychiatry physician with a practice address in San Diego, California, and NPI 1437899291, issued on Mar 30, 2022. Check the license (California A190909, 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
1437899291
Name
Stephanie Ma
Primary taxonomy
Psychiatry Physician 2084P0800X
License number
A190909 CA
Self-reported in NPPES; status is on the state search
Practice location
7850 Vista Hill Ave, San Diego, CA 92123
Phone
(858) 836-8434
Enumerated
Mar 30, 2022
Record last updated
Jul 8, 2026
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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8 nearest psychiatry physician records → All 8,673 in California → Look up another NPI →

Also registered at 7850 Vista Hill Ave

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

  1. Lisette Alder, LMFTMarriage & Family Therapist1194558775
  2. Vicky Borck, D.O.Psychiatry Physician1306939038
  3. John Borman, M.D.Psychiatry Physician1669508727
  4. Mary Beth Bryan, PSYDClinical Psychologist1417134347
  5. Nadia Bukar, PMHNP-BCPsychiatric/Mental Health Nurse Practitioner1982979340
  6. Paulette Cazares, M.D., MPHInternal Medicine Physician1710927470

Verify Stephanie Ma in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of California
    Search for license A190909    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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81% fewer Medicare Part D claims than the average psychiatry physician in 2024

190 Medicare Part D claims for 33 beneficiaries, against an average of 1,000 among the 35,054 providers of this specialty who prescribed in Part D.

  1. Stephanie Ma190
  2. Specialty average1,000

Most prescribed

  1. Aripiprazole21 claims
  2. Gabapentin18 claims
  3. Clonazepam16 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.

Stephanie Ma among 8,673 psychiatry physician records in California

Stephanie Ma 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 2022, is newer than 93% of them.

  • NPI issued2022 · 93% of these records are older, 4% newer
  • In a Medicare fileYes · 67% of these records are
  • In the CMS Doctors and Clinicians fileNo · 38% of these records are
  • Record last updated2026 · 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).

Psychiatry Physician providers in California

There are 8,673 psychiatry physician records in California.

All 8,673 in California → Every provider in San Diego → Psychiatry Physician nationwide →

The 8 psychiatry physician records with the nearest ZIP codes

  1. John Aldous, MDSan Diego, CA 921231831245414
  2. Vicky Borck, D.O.San Diego, CA 921231306939038
  3. Camellia Clark, M.D.San Diego, CA 921231174624399
  4. Nicodemus Garcia, MDSan Diego, CA 921231669478400
  5. Daniel Gardner, MDSan Diego, CA 921231134103591
  6. Asher Gorelik, M.D.San Diego, CA 921231902910649
  7. Thomas Hessling, M.D.San Diego, CA 921231972659191
  8. Syed Jafar, M.D.San Diego, CA 921231164437521

Common questions

What is Stephanie Ma's NPI number?

Stephanie Ma's National Provider Identifier (NPI) is 1437899291, issued on Mar 30, 2022. An NPI identifies a provider in billing; it is not a license.

Where is Stephanie Ma located?

The NPPES record lists a practice address at 7850 Vista Hill Ave, San Diego, CA, 92123. Phone: (858) 836-8434. Providers update this record themselves, so call before visiting.

How can I verify Stephanie Ma's license?

NPPES lists California license number A190909, 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 Stephanie Ma prescribe under Medicare Part D?

In 2024, Stephanie Ma had 190 Medicare Part D claims for 33 beneficiaries; 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.

Written with AI tools from the named public files; every figure is computed from those files (how it is made).

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.