Shirin Majdizadeh, M.D.
Internal Medicine Physician · Orange, CA
Shirin Majdizadeh, M.D. is an internal medicine physician with a practice address in Orange, California, and NPI 1700135126, issued on Aug 30, 2012. Check the license (California C174901, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Shirin Majdizadeh
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License numbers
- C174901 CA
036137067 IL
125062446 IL
Self-reported in NPPES; status is on the state search - Practice location
- 2501 E Chapman Ave Ste 207, Orange, CA 92869
- Phone
- (714) 771-8177
- Enumerated
- Aug 30, 2012
- Record last updated
- Aug 1, 2025
- Medicare enrollment
- Enrolled (PECOS I20230516003338); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 17,696 in California → Look up another NPI →
Verify Shirin Majdizadeh in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license C174901Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
92% fewer Medicare Part D claims than the average internal medicine physician in 2024
267 Medicare Part D claims for 110 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D.
Most prescribed
- Pantoprazole Sodium20 claims
- Eliquis15 claims
- Metoprolol Succinate13 claims
- Atorvastatin Calcium11 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 2 group practices
- Healthcare Partners Affiliates Medical GroupCarson, CA
- Providence Medical FoundationOrange, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Shirin Majdizadeh among 17,696 internal medicine physician records in California
Shirin Majdizadeh, M.D. 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 2012, is newer than 68% of them.
- NPI issued2012 · 68% of these records are older, 29% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 63% of these records are
- Graduated2006 · median 2004 among the 11,065 with a school on file
- Record last updated2025 · 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).
187 internal medicine physician records list a practice address in Orange
They are 187 of the 13,245 NPPES records with a practice address in Orange, and 17,696 internal medicine physician records in California.
All 17,696 in California → Every provider in Orange → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Aladean Abdrabbo, M.D.Orange, CA 928691578905675
- Saif Al Yaseen, M.D.Orange, CA 928691356684096
- Jay Amin, MDOrange, CA 928691568564193
- Laura Cho, M.D.Orange, CA 928691982790820
- Kathleen Glaspy, M.D.Orange, CA 928691134311186
- John Godes, MDOrange, CA 928691730330572
- Yio-Fan Hsu, M.D.Orange, CA 928691588989529
- Graciela Imbastari, MDOrange, CA 928691801809983
Common questions
What is Shirin Majdizadeh, M.D.'s NPI number?
Shirin Majdizadeh, M.D.'s National Provider Identifier (NPI) is 1700135126, issued on Aug 30, 2012. An NPI identifies a provider in billing; it is not a license.
Where is Shirin Majdizadeh, M.D. located?
The NPPES record lists a practice address at 2501 E Chapman Ave Ste 207, Orange, CA, 92869. Phone: (714) 771-8177. Providers update this record themselves, so call before visiting.
How can I verify Shirin Majdizadeh, M.D.'s license?
NPPES lists California license number C174901, 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 Shirin Majdizadeh, M.D. prescribe under Medicare Part D?
In 2024, Shirin Majdizadeh, M.D. had 267 Medicare Part D claims for 110 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.