Ernest De Guzman, M.D.
Psychiatry Physician · San Diego, CA
Ernest De Guzman, M.D. is a psychiatry physician with a practice address in San Diego, California, and NPI 1801914544, issued on Mar 27, 2007. Check the license on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Ernest De Guzman
- Credential
- M.D.
- Primary taxonomy
- Psychiatry Physician 2084P0800X
- Practice location
- 6973 Linda Vista Road, San Diego, CA 92111
- Phone
- (858) 279-9676
- Enumerated
- Mar 27, 2007
- Entity
- Type 1 · individual
Also registered at 6973 Linda Vista Road
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Sheri Abercrombie, PSY.D.Counseling Psychologist1932292422
- Magda AngelRegistered Nurse1710280185
- Jeffrey Cullen, M.D.Pain Medicine Physician1356409411
- Sarah Dixon, MDPediatrics Physician1467751131
- Thu Ha, NPRegistered Nurse1346443983
- Miriam Hopfenblatt, LVNLicensed Vocational Nurse1538142575
Verify Ernest De Guzman in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of CaliforniaCheck the board
- 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS, AOA, NCCPA, AANPNot checked
2.4 times the Medicare Part D claims of the average psychiatry physician in 2024
2,426 Medicare Part D claims for 127 beneficiaries, against an average of 1,010 among the 32,287 providers of this specialty who prescribed in Part D. Brand-name drugs were 1% of claims.
Most prescribed
- Quetiapine Fumarate191 claims
- Alprazolam172 claims
- Venlafaxine Hcl Er170 claims
- Bupropion Xl163 claims
- Trazodone Hcl143 claims
- Fluoxetine Hcl119 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.
One hospital or facility affiliation
- Ridgecrest Regional HospitalRidgecrest, CA · Critical Access Hospitals
Source: CMS Doctors and Clinicians affiliations; Hospital General Information (Care Compare) (data.cms.gov). Star ratings are CMS hospital ratings, not ratings of this provider.
Psychiatry Physician providers in California
There are 7,890 psychiatry physician records in California.
Other psychiatry physician records in California
- Nancy Aaen, MDNapa, CA1609816669
- Criselda Abad-Santos, M.D.Woodland Hills, CA1760461826
- Mekabiz Abaian, MDSan Bernardino, CA1891090163
- Kafia Abbasi, M.D.French Camp, CA1215114897
- Michele Abbasi, M.D.Westlake Village, CA1093940330
- Zohaib AbbasiMartinez, CA1013392224
- Chester Abbott, M.D.Pasadena, CA1053442186
- Nancy Abdelmalak, M.D.Elk Grove, CA1912137498
- Ezzat Abdelmalek, M.DDana Point, CA1992828826
- Ahmed AbdelrazekSacramento, CA1669092128
Common questions
What is Ernest De Guzman, M.D.'s NPI number?
Ernest De Guzman, M.D.'s National Provider Identifier (NPI) is 1801914544, issued on Mar 27, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Ernest De Guzman, M.D. located?
The NPPES record lists a practice address at 6973 Linda Vista Road, San Diego, CA, 92111. Phone: (858) 279-9676. Providers update this record themselves, so call before visiting.
How can I verify Ernest De Guzman, M.D.'s license?
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 Ernest De Guzman, M.D. prescribe under Medicare Part D?
In 2024, Ernest De Guzman, M.D. had 2,426 Medicare Part D claims for 127 beneficiaries; the average among psychiatry physician prescribers was 1,010. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), loaded Aug 27, 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.
Every figure on PlainDoctor is rendered directly from the federal CMS NPPES registry, Medicare Part D, MIPS, and Open Payments records, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 27, 2026.