Marlene Alfaro, MD
Student in an Organized Health Care Education/Training Program · San Diego, CA
Marlene Alfaro, MD is a student in an organized health care education/training program with a practice address in San Diego, California, and NPI 1669059820, issued on Mar 25, 2021. Check the license with the California board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Marlene Alfaro
- Credential
- MD
- Primary taxonomy
- Student in an Organized Health Care Education/Training Program 390200000X
- Practice location
- 4647 Zion Ave Ste 1116, San Diego, CA 92120
- Phone
- (714) 622-9844
- Enumerated
- Mar 25, 2021
- Record last updated
- Dec 8, 2021 (not updated in 5 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20240829000750); accepts Medicare assignment
- Medical or professional school
- Un Of California, Riverside, School Of Medicine, 2021
- Entity
- Type 1 · individual
8 nearest student in an organized health care education/training program records → All 40,652 in California → Look up another NPI →
Also registered at 4647 Zion Ave Ste 1116
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Marlene Alfaro in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this professionCheck the board
- 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
42% fewer Medicare Part D claims than the average student in an organized health care education/training program in 2024
107 Medicare Part D claims for 81 beneficiaries, against an average of 185 among the 59,748 providers of this specialty who prescribed in Part D. Brand-name drugs were 11% of claims.
Most prescribed
- Prednisone16 claims
- Doxycycline Monohydrate11 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.
Bills Medicare through one group practice
- Southern California Permanente Medical GroupRiverside, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Marlene Alfaro among 40,652 student in an organized health care education/training program records in California
Marlene Alfaro, MD is one of 40,652 student in an organized health care education/training program records with a practice address in California. 16% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2021, is newer than 28% of them.
- NPI issued2021 · 28% of these records are older, 66% newer
- In a Medicare fileYes · 16% of these records are
- In the CMS Doctors and Clinicians fileYes · 6% of these records are
- Graduated2021 · median 2017 among the 2,409 with a school on file
- Record last updated2021 · 26% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 390200000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
2,098 student in an organized health care education/training program records list a practice address in San Diego
They are 2,098 of the 52,937 NPPES records with a practice address in San Diego, and 40,652 student in an organized health care education/training program records in California.
All 40,652 in California → Every provider in San Diego → Student in an Organized Health Care Education/Training Program nationwide →
The 8 student in an organized health care education/training program records with the nearest ZIP codes
- Julie Antonova, M.D.San Diego, CA 921201851786826
- Audrey BallanceSan Diego, CA 921201316371404
- Tassiana BarrosSan Diego, CA 921201063805877
- Jennie ChauSan Diego, CA 921201124496054
- Tod Leonard, MFT INTERNSan Diego, CA 921201396040531
- Carolyn LoganSan Diego, CA 921201255725610
- Elisha NavarroSan Diego, CA 921201598952509
- Anna NguyenSan Diego, CA 921201255611364
Common questions
What is Marlene Alfaro, MD's NPI number?
Marlene Alfaro, MD's National Provider Identifier (NPI) is 1669059820, issued on Mar 25, 2021. An NPI identifies a provider in billing; it is not a license.
Where is Marlene Alfaro, MD located?
The NPPES record lists a practice address at 4647 Zion Ave Ste 1116, San Diego, CA, 92120. Phone: (714) 622-9844. Providers update this record themselves, so call before visiting.
How can I verify Marlene Alfaro, MD's license?
Search the California board that licenses this profession; the NPPES record confirms identity only.
How much does Marlene Alfaro, MD prescribe under Medicare Part D?
In 2024, Marlene Alfaro, MD had 107 Medicare Part D claims for 81 beneficiaries; the average among student in an organized health care education/training program prescribers was 185. 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.