Erfan Zarrinkhoo, MD
Hospitalist Physician · Sylmar, CA
Erfan Zarrinkhoo, MD is a hospitalist physician with a practice address in Sylmar, California, and NPI 1568081966, issued on Apr 15, 2020. Check the license (California A189068, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Erfan Zarrinkhoo
- Credential
- MD
- Primary taxonomy
- Hospitalist Physician 208M00000X
- License number
- A189068 CA
Self-reported in NPPES; status is on the state search - Practice location
- 14445 Olive View Dr, Sylmar, CA 91342
- Phone
- (747) 210-1920
- Enumerated
- Apr 15, 2020
- Record last updated
- Feb 23, 2024
- Medicare enrollment
- Enrolled (PECOS I20231107002666); accepts Medicare assignment
- Medical or professional school
- Wake Forest University School Of Medicine, 2020
- Entity
- Type 1 · individual
8 nearest hospitalist physician records → All 3,099 in California → Look up another NPI →
Also registered at 14445 Olive View Dr
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Moyosore Abere, NPNurse Practitioner1225667314
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- Margarita Acosta, RN, AGACNPAcute Care Nurse Practitioner1609202415
- Fredric Adler, MDInternal Medicine Physician1356376735
Verify Erfan Zarrinkhoo in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A189068Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
22% fewer Medicare Part D claims than the average hospitalist physician in 2024
407 Medicare Part D claims for 115 beneficiaries, against an average of 521 among the 21,613 providers of this specialty who prescribed in Part D. Brand-name drugs were 12% of claims.
Most prescribed
- Atorvastatin Calcium27 claims
- Pantoprazole Sodium24 claims
- Clopidogrel23 claims
- Losartan Potassium21 claims
- Metoprolol Tartrate15 claims
- Amlodipine Besylate14 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 GroupLos Angeles, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Erfan Zarrinkhoo among 3,099 hospitalist physician records in California
Erfan Zarrinkhoo, MD is one of 3,099 hospitalist physician records with a practice address in California. 90% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2020, is newer than 85% of them.
- NPI issued2020 · 85% of these records are older, 10% newer
- In a Medicare fileYes · 90% of these records are
- In the CMS Doctors and Clinicians fileYes · 81% of these records are
- Graduated2020 · median 2010 among the 2,505 with a school on file
- Record last updated2024 · 49% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 208M00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Hospitalist Physician providers in California
There are 3,099 hospitalist physician records in California.
All 3,099 in California → Every provider in Sylmar → Hospitalist Physician nationwide →
The 8 hospitalist physician records with the nearest ZIP codes
- Alvera Akroush, M.D.Sylmar, CA 913421730315359
- Lex Chen, M.D.Sylmar, CA 913421265607956
- Christine Dang, M.D.Sylmar, CA 913421669648192
- Tavit Dunnsiri, MDSylmar, CA 913421649899477
- Therlinder Lo, MDSylmar, CA 913421912585795
- Glen Pearlstein, M.D.Sylmar, CA 913421851558837
- Jaclyn Spiegel, MDSylmar, CA 913421427323591
- Ali Azizi, M.D.Mission Hills, CA 913451225234529
Common questions
What is Erfan Zarrinkhoo, MD's NPI number?
Erfan Zarrinkhoo, MD's National Provider Identifier (NPI) is 1568081966, issued on Apr 15, 2020. An NPI identifies a provider in billing; it is not a license.
Where is Erfan Zarrinkhoo, MD located?
The NPPES record lists a practice address at 14445 Olive View Dr, Sylmar, CA, 91342. Phone: (747) 210-1920. Providers update this record themselves, so call before visiting.
How can I verify Erfan Zarrinkhoo, MD's license?
NPPES lists California license number A189068, 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 Erfan Zarrinkhoo, MD prescribe under Medicare Part D?
In 2024, Erfan Zarrinkhoo, MD had 407 Medicare Part D claims for 115 beneficiaries; the average among hospitalist physician prescribers was 521. 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.