Ernest V. De Guzman, M.D.
Psychiatry Physician · San Diego, CA
Ernest V. 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 (California A95424, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Ernest V. De Guzman
- Credential
- M.D.
- Primary taxonomy
- Psychiatry Physician 2084P0800X
- License number
- A95424 CA
Self-reported in NPPES; status is on the state search - Practice location
- 6973 Linda Vista Road, San Diego, CA 92111
- Phone
- (858) 279-9676
- Enumerated
- Mar 27, 2007
- Record last updated
- Sep 19, 2014 (not updated in 12 years: call before relying on the address or phone)
- Fax
- (858) 279-0377
- Medicare enrollment
- Enrolled (PECOS I20080404000859); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest psychiatry physician records → All 8,673 in California → Look up another NPI →
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.Psychologist1932292422
- Magda AngelRegistered Nurse1710280185
- Jeffrey Cullen, M.D.Internal Medicine Physician1356409411
- Sarah Dixon, MDPediatrics Physician1467751131
- Thu Ha, NPFamily Nurse Practitioner1346443983
- Miriam Hopfenblatt, LVNLicensed Vocational Nurse1538142575
Verify Ernest V. De Guzman in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A95424Check 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 1,000 among the 35,054 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 affiliation
- Ridgecrest Regional HospitalRidgecrest, CA · Critical Access Hospitals
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through); hospitals matched to CMS Hospital General Information (Care Compare) (data.cms.gov).
Ernest V. De Guzman among 8,673 psychiatry physician records in California
Ernest V. De Guzman, 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 2007, is newer than 33% of them.
- NPI issued2007 · 33% of these records are older, 48% newer
- In a Medicare fileYes · 67% of these records are
- In the CMS Doctors and Clinicians fileYes · 38% of these records are
- Graduated1988 · median 2005 among the 3,295 with a school on file
- Record last updated2014 · 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
- Anh BuiSan Diego, CA 921111184309684
- Michael Lardon, M.D.San Diego, CA 921111174630305
- Jorge Naranjo, M.D.San Diego, CA 921111992838684
- Savita Bhakta, M.D.San Diego, CA 921101326284480
- Jonathan Deam, M.D.San Diego, CA 921101982864948
- Robert Enriquez, M.D.San Diego, CA 921101649590175
- Kendra Ferguson, M.D.San Diego, CA 921101174843957
- Mark Harashevsky, D.O.San Diego, CA 921101699923318
Common questions
What is Ernest V. De Guzman, M.D.'s NPI number?
Ernest V. 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 V. 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 V. De Guzman, M.D.'s license?
NPPES lists California license number A95424, 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 Ernest V. De Guzman, M.D. prescribe under Medicare Part D?
In 2024, Ernest V. De Guzman, M.D. had 2,426 Medicare Part D claims for 127 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.