Mehrdad Ghahremani-Ghajar, D.O.
Internal Medicine Physician · Rialto, CA
Mehrdad Ghahremani-Ghajar, D.O. is an internal medicine physician with a practice address in Rialto, California, and NPI 1942510607, issued on Oct 15, 2010. Check the license (California 20A11526, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Mehrdad Ghahremani-Ghajar
- Credential
- D.O.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 20A11526 CA
Self-reported in NPPES; status is on the state search - Practice location
- 2248 N Milor Ave, Rialto, CA 92377
- Phone
- (909) 472-8375
- Enumerated
- Oct 15, 2010
- Record last updated
- May 19, 2026
- Medicare enrollment
- Enrolled (PECOS I20120912000402); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 17,696 in California → Look up another NPI →
Verify Mehrdad Ghahremani-Ghajar in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license 20A11526Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
28% fewer Medicare Part D claims than the average internal medicine physician in 2024
2,292 Medicare Part D claims for 360 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 11% of claims.
Most prescribed
- Amlodipine Besylate152 claims
- Furosemide143 claims
- Jardiance119 claims
- Lisinopril118 claims
- Losartan Potassium110 claims
- Potassium Chloride106 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.
Industry payments in 2024: $63.99
3 payments; by number, the most common kind was food and beverage; the largest payer was Travere Therapeutics, Inc. The 50,334 providers of this specialty with any payment received $1,303.06 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through 3 group practices
- Inland Empire Nephrology IncColton, CA
- Quantum Healthcare Medical Associates IncColton, CA
- 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).
Mehrdad Ghahremani-Ghajar among 17,696 internal medicine physician records in California
Mehrdad Ghahremani-Ghajar, D.O. is one of 17,696 internal medicine physician records with a practice address in California. 79% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2010, is newer than 63% of them.
- NPI issued2010 · 63% of these records are older, 34% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 63% of these records are
- Graduated2009 · median 2004 among the 11,065 with a school on file
- Record last updated2026 · 61% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
12 internal medicine physician records list a practice address in Rialto
They are 12 of the 1,044 NPPES records with a practice address in Rialto, and 17,696 internal medicine physician records in California.
All 17,696 in California → Every provider in Rialto → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Zeid Kayali, M.D.Rialto, CA 923771396777538
- Natasha Alexander, MDRialto, CA 923761255615530
- Paul Chen, M.D.Rialto, CA 923761588689350
- Hedyeh Golshan, M.D.Rialto, CA 923761174582688
- Ikechi Obiocha, MDRialto, CA 923761467479295
- Charles Sabbah, M.D.Rialto, CA 923761467491118
- Yousuf Sadiq, MDRialto, CA 923761417067588
- Ravindranath Shahane, M.D.Rialto, CA 923761457420903
Common questions
What is Mehrdad Ghahremani-Ghajar, D.O.'s NPI number?
Mehrdad Ghahremani-Ghajar, D.O.'s National Provider Identifier (NPI) is 1942510607, issued on Oct 15, 2010. An NPI identifies a provider in billing; it is not a license.
Where is Mehrdad Ghahremani-Ghajar, D.O. located?
The NPPES record lists a practice address at 2248 N Milor Ave, Rialto, CA, 92377. Phone: (909) 472-8375. Providers update this record themselves, so call before visiting.
How can I verify Mehrdad Ghahremani-Ghajar, D.O.'s license?
NPPES lists California license number 20A11526, 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 Mehrdad Ghahremani-Ghajar, D.O. prescribe under Medicare Part D?
In 2024, Mehrdad Ghahremani-Ghajar, D.O. had 2,292 Medicare Part D claims for 360 beneficiaries; the average among internal medicine physician prescribers was 3,176. 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.