Steve Youssefian, M.D.
Family Medicine Physician · San Dimas, CA
Steve Youssefian, M.D. is a family medicine physician with a practice address in San Dimas, California, and NPI 1043698707, issued on May 14, 2015. Check the license (California A155979, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Steve Youssefian
- Credential
- M.D.
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License numbers
- A155979 CA
MT208388 PA
Self-reported in NPPES; status is on the state search - Practice location
- 1125 Via Verde, San Dimas, CA 91773
- Phone
- (909) 592-9778
- Enumerated
- May 14, 2015
- Record last updated
- Feb 5, 2024
- Fax
- (909) 599-6126
- Medicare enrollment
- Enrolled (PECOS I20181206002674); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 17,133 in California → Look up another NPI →
Also registered at 1125 Via Verde
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Steve Youssefian in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A155979Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
8% fewer Medicare Part D claims than the average family medicine physician in 2024
3,278 Medicare Part D claims for 291 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. Brand-name drugs were 13% of claims. 46 claims were for opioids.
Most prescribed
- Atorvastatin Calcium210 claims
- Losartan Potassium155 claims
- Amlodipine Besylate141 claims
- Levothyroxine Sodium110 claims
- Lisinopril93 claims
- Albuterol Sulfate Hfa86 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
- Emanate Health Medical Care FoundationWest Covina, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Steve Youssefian among 17,133 family medicine physician records in California
Steve Youssefian, M.D. is one of 17,133 family medicine physician records with a practice address in California. 81% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2015, is newer than 74% of them.
- NPI issued2015 · 74% of these records are older, 24% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileYes · 62% of these records are
- Graduated2015 · median 2005 among the 10,652 with a school on file
- Record last updated2024 · 58% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207Q00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
29 family medicine physician records list a practice address in San Dimas
They are 29 of the 942 NPPES records with a practice address in San Dimas, and 17,133 family medicine physician records in California.
All 17,133 in California → Every provider in San Dimas → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- Norma Bachoura, M.D.San Dimas, CA 917731235191131
- Stephanie Chang, D.O.San Dimas, CA 917731740387091
- Steven Davis, D.O.San Dimas, CA 917731154300978
- Maria Dunton, DOSan Dimas, CA 917731639112386
- Candido Gamez, M.D.San Dimas, CA 917731689625972
- Rosanna Iskander, M.D.San Dimas, CA 917731265500896
- Sabah Kadhium, MDSan Dimas, CA 917731306836770
- Richard Magallon, MDSan Dimas, CA 917731316925530
Common questions
What is Steve Youssefian, M.D.'s NPI number?
Steve Youssefian, M.D.'s National Provider Identifier (NPI) is 1043698707, issued on May 14, 2015. An NPI identifies a provider in billing; it is not a license.
Where is Steve Youssefian, M.D. located?
The NPPES record lists a practice address at 1125 Via Verde, San Dimas, CA, 91773. Phone: (909) 592-9778. Providers update this record themselves, so call before visiting.
How can I verify Steve Youssefian, M.D.'s license?
NPPES lists California license number A155979, 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 Steve Youssefian, M.D. prescribe under Medicare Part D?
In 2024, Steve Youssefian, M.D. had 3,278 Medicare Part D claims for 291 beneficiaries; the average among family medicine physician prescribers was 3,544. 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.