Margarita M. Alonso, M.D.
Psychiatry Physician · Poway, CA
Margarita M. Alonso, M.D. is a psychiatry physician with a practice address in Poway, California, and NPI 1780618082, issued on Jul 10, 2006. Check the license (California G-75461, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Margarita M. Alonso
- Credential
- M.D.
- Primary taxonomy
- Psychiatry Physician 2084P0800X
- License number
- G-75461 CA
Self-reported in NPPES; status is on the state search - Practice location
- 15525 Pomerado RD, Poway, CA 92064
- Phone
- (858) 279-1223
- Enumerated
- Jul 10, 2006
- Record last updated
- Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
- Fax
- (858) 673-8519
- Medicare enrollment
- Enrolled (PECOS I20040511001337); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest psychiatry physician records → All 8,673 in California → Look up another NPI →
Also registered at 15525 Pomerado RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Margarita M. Alonso in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license G-75461Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
48% fewer Medicare Part D claims than the average psychiatry physician in 2024
521 Medicare Part D claims for 52 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.
Most prescribed
- Duloxetine Hcl58 claims
- Bupropion Xl44 claims
- Escitalopram Oxalate37 claims
- Clonazepam36 claims
- Alprazolam34 claims
- Gabapentin32 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.
Margarita M. Alonso among 8,673 psychiatry physician records in California
Margarita M. Alonso, 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
- Graduated1992 · median 2005 among the 3,295 with a school on file
- Record last updated2007 · 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).
12 psychiatry physician records list a practice address in Poway
They are 12 of the 1,306 NPPES records with a practice address in Poway, and 8,673 psychiatry physician records in California.
All 8,673 in California → Every provider in Poway → Psychiatry Physician nationwide →
The 8 psychiatry physician records with the nearest ZIP codes
- Claire Andersen, M.D.Poway, CA 920641831418664
- Bernard Bogard, MDPoway, CA 920641699785964
- Sofia Elkind, MDPoway, CA 920641114318201
- Jake Goodman, MDPoway, CA 920641679159545
- Stephen Gould, MDPoway, CA 920641205938420
- Rosben Gutierrez, MDPoway, CA 920641538225735
- Joshua Hall, M.D., PH.D.Poway, CA 920641063559060
- Badalin Helvink, MDPoway, CA 920641144342403
Common questions
What is Margarita M. Alonso, M.D.'s NPI number?
Margarita M. Alonso, M.D.'s National Provider Identifier (NPI) is 1780618082, issued on Jul 10, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Margarita M. Alonso, M.D. located?
The NPPES record lists a practice address at 15525 Pomerado RD, Poway, CA, 92064. Phone: (858) 279-1223. Providers update this record themselves, so call before visiting.
How can I verify Margarita M. Alonso, M.D.'s license?
NPPES lists California license number G-75461, 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 Margarita M. Alonso, M.D. prescribe under Medicare Part D?
In 2024, Margarita M. Alonso, M.D. had 521 Medicare Part D claims for 52 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.