Siamak Agha Mohammadi, M.D.
Specialist · Corona Del Mar, CA
Siamak Agha Mohammadi, M.D. is a specialist with a practice address in Corona Del Mar, California, and NPI 1871675033, issued on Oct 19, 2006. Check the license (California A92742, as entered in NPPES) with the California board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Siamak Agha Mohammadi
- Credential
- M.D.
- Primary taxonomy
- Specialist 174400000X
- License numbers
- A92742 CA
MD426291 PA
Self-reported in NPPES; status is on the state search - Practice location
- 2121 E Coast Hwy Ste 260, Corona Del Mar, CA 92625
- Phone
- (949) 644-2442
- Enumerated
- Oct 19, 2006
- Record last updated
- May 17, 2011 (not updated in 15 years: call before relying on the address or phone)
- Fax
- (949) 644-2518
- Entity
- Type 1 · individual
8 nearest specialist records → All 5,749 in California → Look up another NPI →
Also registered at 2121 E Coast Hwy Ste 260
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Ali Elahi, MDNeurology Physician1619983533
Verify Siamak Agha Mohammadi in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this profession
Search for license A92742Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Industry payments in 2024: $191.52
4 payments; by number, the most common kind was food and beverage; the largest payer was LifeNet Health. The 5,844 providers of this specialty with any payment received $4,760.79 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.
Siamak Agha Mohammadi among 5,749 specialist records in California
Siamak Agha Mohammadi, M.D. is one of 5,749 specialist records with a practice address in California. 30% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 7% of them.
- NPI issued2006 · 7% of these records are older, 60% newer
- In a Medicare fileYes · 30% of these records are
- In the CMS Doctors and Clinicians fileNo · 19% of these records are
- Record last updated2011 · 77% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 174400000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
3 specialist records list a practice address in Corona Del Mar
They are 3 of the 139 NPPES records with a practice address in Corona Del Mar, and 5,749 specialist records in California.
All 5,749 in California → Every provider in Corona Del Mar → Specialist nationwide →
The 8 specialist records with the nearest ZIP codes
- Paul Berg, MDCorona Del Mar, CA 926251740568070
- Bree Harsh, ELECTROLYSISCorona Del Mar, CA 926251417635731
- Michael Niccole, M.D.Newport Beach, CA 926251801010475
- Mary Cox, P.T.Costa Mesa, CA 926261881890887
- Ashlee Cullen, RNCosta Mesa, CA 926261649755406
- Tanya McCullahCosta Mesa, CA 926261821140138
- Carlos Montano, M.D.Costa Mesa, CA 926261669418794
- George Nakai, MDCosta Mesa, CA 926261134540388
Common questions
What is Siamak Agha Mohammadi, M.D.'s NPI number?
Siamak Agha Mohammadi, M.D.'s National Provider Identifier (NPI) is 1871675033, issued on Oct 19, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Siamak Agha Mohammadi, M.D. located?
The NPPES record lists a practice address at 2121 E Coast Hwy Ste 260, Corona Del Mar, CA, 92625. Phone: (949) 644-2442. Providers update this record themselves, so call before visiting.
How can I verify Siamak Agha Mohammadi, M.D.'s license?
NPPES lists California license number A92742, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity 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.