NPPES file of Aug 9, 2026

Robert Michael Trimmer, M.D.

Psychiatry Physician · Sacramento, CA

Robert Michael Trimmer, M.D. is a psychiatry physician with a practice address in Sacramento, California, and NPI 1003925736, issued on Aug 29, 2006. Check the license (California A83471, 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
1003925736
Name
Robert Michael Trimmer
Credential
M.D.
Primary taxonomy
Psychiatry Physician 2084P0800X
License number
A83471 CA
Self-reported in NPPES; status is on the state search
Practice location
2180 Harvard St Ste 210, Sacramento, CA 95815
Phone
(855) 501-1004
Enumerated
Aug 29, 2006
Record last updated
May 5, 2026
Medicare enrollment
Enrolled (PECOS I20040301000135); accepts Medicare assignment
Medical or professional school
Loma Linda University School Of Medicine, 2001
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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8 nearest psychiatry physician records → All 8,673 in California → Look up another NPI →

Also registered at 2180 Harvard St Ste 210

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

  1. Ahmed AbdelrazekPsychiatry Physician1669092128
  2. Aderonke Akande, NPPsychiatric/Mental Health Nurse Practitioner1083980247
  3. Ziad AliPsychiatry Physician1750918041
  4. Joshua Burgett, NPPsychiatric/Mental Health Nurse Practitioner1841378247
  5. Jane Egbufoama, PMHNP-BCPsychiatric/Mental Health Nurse Practitioner1417469248
  6. Amanjot Gill, MDPsychiatry Physician1336401041

Verify Robert Michael Trimmer in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of California
    Search for license A83471    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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19% more Medicare Part D claims than the average psychiatry physician in 2024

1,186 Medicare Part D claims for 63 beneficiaries, against an average of 1,000 among the 35,054 providers of this specialty who prescribed in Part D. Brand-name drugs were 8% of claims.

  1. Robert Trimmer1,186
  2. Specialty average1,000

Most prescribed

  1. Lamotrigine130 claims
  2. Alprazolam87 claims
  3. Duloxetine Hcl74 claims
  4. Bupropion Xl69 claims
  5. Sertraline Hcl62 claims
  6. Trazodone Hcl54 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.

Industry payments in 2024: $289.79

17 payments; by number, the most common kind was food and beverage; the largest payer was Abbvie Inc. The 13,693 providers of this specialty with any payment received $4,954.93 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Robert Trimmer$289.79
  2. Specialty average$4,954.93

Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.

Bills Medicare through one group practice

  1. Mark David Levine MD Professional CorporationSacramento, CA

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

Robert Michael Trimmer among 8,673 psychiatry physician records in California

Robert Michael Trimmer, 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 2006, is newer than 2% of them.

  • NPI issued2006 · 2% of these records are older, 67% newer
  • In a Medicare fileYes · 67% of these records are
  • In the CMS Doctors and Clinicians fileYes · 38% of these records are
  • Graduated2001 · median 2005 among the 3,295 with a school on file
  • 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).

331 psychiatry physician records list a practice address in Sacramento

They are 331 of the 33,083 NPPES records with a practice address in Sacramento, and 8,673 psychiatry physician records in California.

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

The 8 psychiatry physician records with the nearest ZIP codes

  1. Ahmed AbdelrazekSacramento, CA 958151669092128
  2. Ziad AliSacramento, CA 958151750918041
  3. Amanjot Gill, MDSacramento, CA 958151336401041
  4. Ari Harris, M.D.Sacramento, CA 958151124386875
  5. Ni Ni Hla, M.D.Sacramento, CA 958151356458616
  6. Ahmed Kadhim, MDSacramento, CA 958151861141491
  7. Karla Lacayo, MDSacramento, CA 958151336227024
  8. Rajdeep Ranade, M.D.Sacramento, CA 958151164614400

Common questions

What is Robert Michael Trimmer, M.D.'s NPI number?

Robert Michael Trimmer, M.D.'s National Provider Identifier (NPI) is 1003925736, issued on Aug 29, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Robert Michael Trimmer, M.D. located?

The NPPES record lists a practice address at 2180 Harvard St Ste 210, Sacramento, CA, 95815. Phone: (855) 501-1004. Providers update this record themselves, so call before visiting.

How can I verify Robert Michael Trimmer, M.D.'s license?

NPPES lists California license number A83471, 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 Robert Michael Trimmer, M.D. prescribe under Medicare Part D?

In 2024, Robert Michael Trimmer, M.D. had 1,186 Medicare Part D claims for 63 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.