NPPES file of Aug 9, 2026

Ingrid Lynn Chen, M.D.

Psychiatry Physician · Oakland, CA

Ingrid Lynn Chen, M.D. is a psychiatry physician with a practice address in Oakland, California, and NPI 1962038927, issued on Mar 20, 2020. Check the license (California 176285, 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
1962038927
Name
Ingrid Lynn Chen
Credential
M.D.
Primary taxonomy
Psychiatry Physician 2084P0800X
License number
176285 CA
Self-reported in NPPES; status is on the state search
Practice location
275 W Macarthur Blvd, Oakland, CA 94611
Phone
(510) 752-1936
Enumerated
Mar 20, 2020
Record last updated
Oct 28, 2024
Medicare enrollment
Enrolled (PECOS I20241106002447); accepts Medicare assignment
Medical or professional school
State University Of New York At Stony Brook, 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 275 W Macarthur Blvd

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

  1. David Aaronson, MDUrology Physician1215053129
  2. Paul-Andre Abboud, M.D.Emergency Medicine Physician1710065503
  3. Brittany Abeldt, MDPsychiatry Physician1982353884
  4. Bilal Abu-Alrub, DOStudent in an Organized Health Care Education/Training Program1609760768
  5. Walter Acuna, MDInternal Medicine Physician1972655108
  6. Brett Adams, MDStudent in an Organized Health Care Education/Training Program1841731098

Verify Ingrid Lynn Chen in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of California
    Search for license 176285
    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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86% fewer Medicare Part D claims than the average psychiatry physician in 2024

144 Medicare Part D claims for 51 beneficiaries, against an average of 1,000 among the 35,054 providers of this specialty who prescribed in Part D.

  1. Ingrid Chen144
  2. Specialty average1,000

Most prescribed

  1. Trazodone Hcl18 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.

Bills Medicare through one group practice

  1. Permanente Medical Group IncRichmond, CA

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

Ingrid Lynn Chen among 8,673 psychiatry physician records in California

Ingrid Lynn Chen, 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 2020, is newer than 87% of them.

  • NPI issued2020 · 87% of these records are older, 9% 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 updated2024 · 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.

The 8 psychiatry physician records with the nearest ZIP codes

  1. Sharon Abramowitz, M.D.Oakland, CA 946111003834094
  2. David Atkins, MDOakland, CA 946111114005816
  3. Carol Cohen, MDOakland, CA 946111467530238
  4. Kennedy Cosgrove, MDOakland, CA 946111659486561
  5. Leslie Fuchs, M.D.Oakland, CA 946111346271947
  6. Thomas Gonda, MDOakland, CA 946111033297833
  7. John Hiatt, MDOakland, CA 946111780693093
  8. Xiaoyu Huang, M.D.Oakland, CA 946111841388428

Common questions

What is Ingrid Lynn Chen, M.D.'s NPI number?

Ingrid Lynn Chen, M.D.'s National Provider Identifier (NPI) is 1962038927, issued on Mar 20, 2020. An NPI identifies a provider in billing; it is not a license.

Where is Ingrid Lynn Chen, M.D. located?

The NPPES record lists a practice address at 275 W Macarthur Blvd, Oakland, CA, 94611. Phone: (510) 752-1936. Providers update this record themselves, so call before visiting.

How can I verify Ingrid Lynn Chen, M.D.'s license?

NPPES lists California license number 176285, 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 Ingrid Lynn Chen, M.D. prescribe under Medicare Part D?

In 2024, Ingrid Lynn Chen, M.D. had 144 Medicare Part D claims for 51 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.

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.