NPPES file of Aug 9, 2026

Marc A. Charles, M.D.

Psychiatry Physician · Fullerton, CA

Marc A. Charles, M.D. is a psychiatry physician with a practice address in Fullerton, California, and NPI 1316032386, issued on Oct 4, 2006. Check the license (California G40535, 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
1316032386
Name
Marc A. Charles
Credential
M.D.
Primary taxonomy
Psychiatry Physician 2084P0800X
License number
G40535 CA
Self-reported in NPPES; status is on the state search
Practice location
1501 North Harbor Blvd, Fullerton, CA 92835
Phone
(714) 871-5411
Enumerated
Oct 4, 2006
Record last updated
Dec 12, 2013 (not updated in 13 years: call before relying on the address or phone)
Fax
(714) 871-2401
Medicare enrollment
Enrolled (PECOS I20040513001101); may accept Medicare assignment
Medical or professional school
University Of California, Irvine, California College Of Medicine, 1977
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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Verify Marc A. Charles in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of California
    Search for license G40535
    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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78% fewer Medicare Part D claims than the average psychiatry physician in 2024

217 Medicare Part D claims for 29 beneficiaries, against an average of 1,000 among the 35,054 providers of this specialty who prescribed in Part D. Brand-name drugs were 0% of claims.

  1. Marc Charles217
  2. Specialty average1,000

Most prescribed

  1. Clonazepam32 claims
  2. Zolpidem Tartrate23 claims
  3. Quetiapine Fumarate16 claims
  4. Risperidone13 claims
  5. Alprazolam12 claims
  6. Escitalopram Oxalate12 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.

Marc A. Charles among 8,673 psychiatry physician records in California

Marc A. Charles, 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
  • Graduated1977 · median 2005 among the 3,295 with a school on file
  • Record last updated2013 · 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. John AlvarezFullerton, CA 928351912361106
  2. Kishore Desagani, M.D.Fullerton, CA 928351427084839
  3. Mandeep Reddy, MDFullerton, CA 928351972796563
  4. Hina Sidhu, M.D.Fullerton, CA 928351194919803
  5. Sandhya Gudapati, M.D.Fullerton, CA 928321962625384
  6. Parool Patel, MDFullerton, CA 928321740489764
  7. Racha ChamlatiFullerton, CA 928311215599337
  8. Joe Chiu, MDFullerton, CA 928311730193129

Common questions

What is Marc A. Charles, M.D.'s NPI number?

Marc A. Charles, M.D.'s National Provider Identifier (NPI) is 1316032386, issued on Oct 4, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Marc A. Charles, M.D. located?

The NPPES record lists a practice address at 1501 North Harbor Blvd, Fullerton, CA, 92835. Phone: (714) 871-5411. Providers update this record themselves, so call before visiting.

How can I verify Marc A. Charles, M.D.'s license?

NPPES lists California license number G40535, 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 Marc A. Charles, M.D. prescribe under Medicare Part D?

In 2024, Marc A. Charles, M.D. had 217 Medicare Part D claims for 29 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.