Amir K. Ghiassi, M.D.
Critical Care Medicine (Internal Medicine) Physician · Orange, CA
Amir K. Ghiassi, M.D. is a critical care medicine (internal medicine) physician with a practice address in Orange, California, and NPI 1518983899, issued on Jul 13, 2006. Check the license (California C52272, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Amir K. Ghiassi
- Credential
- M.D.
- Primary taxonomy
- Critical Care Medicine (Internal Medicine) Physician 207RC0200X
- License number
- C52272 CA
Self-reported in NPPES; status is on the state search - Practice location
- 1100 W Stewart Dr, Orange, CA 92868
- Phone
- (714) 633-9111
- Enumerated
- Jul 13, 2006
- Record last updated
- Apr 9, 2018 (not updated in 8 years: call before relying on the address or phone)
- Medicaid ID
- 1912919804 CA
- Medicare enrollment
- Enrolled (PECOS I20060821000261); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest critical care medicine (internal medicine) physician records → All 723 in California → Look up another NPI →
Also registered at 1100 W Stewart Dr
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Matthew Abrishamian, MDEmergency Medicine Physician1720516743
- Christie Aiello, FNP-BCFamily Nurse Practitioner1972976744
- Azita Alipour, PHARM.D.Psychiatric Pharmacist1982835401
- Allison Alix, WHNPWomen's Health Nurse Practitioner1396269403
- Roger Arakaki, M.D.Anesthesiology Physician1003836990
- Shadi Aramesh, MDPsychiatry Physician1326487091
Verify Amir K. Ghiassi in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license C52272Check 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: $1,872.66
3 payments; by number, the most common kind was consulting fee; the largest payer was Becton, Dickinson and Company. The 2,708 providers of this specialty with any payment received $2,958.68 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
- Cep America - Intensivists PCLong Beach, CA
- Integrated Critical Care And Pulmonary Specialists IncOrange, CA
- Southbay Critical Care A Medical PartnershipTorrance, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Amir K. Ghiassi among 723 critical care medicine (internal medicine) physician records in California
Amir K. Ghiassi, M.D. is one of 723 critical care medicine (internal medicine) physician records with a practice address in California. 87% 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 6% of them.
- NPI issued2006 · 6% of these records are older, 60% newer
- In a Medicare fileYes · 87% of these records are
- In the CMS Doctors and Clinicians fileYes · 77% of these records are
- Graduated1998 · median 2005 among the 559 with a school on file
- Record last updated2018 · 50% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RC0200X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Critical Care Medicine (Internal Medicine) Physician providers in California
There are 723 critical care medicine (internal medicine) physician records in California.
All 723 in California → Every provider in Orange → Critical Care Medicine (Internal Medicine) Physician nationwide →
The 8 critical care medicine (internal medicine) physician records with the nearest ZIP codes
- Adithya Cattamanchi, MDOrange, CA 928681336106871
- Lillian Chow, MDOrange, CA 928681972778520
- Shahid Hayat, M.D.Orange, CA 928681316047913
- Steven Leven, MDOrange, CA 928681538166780
- Reza Mina-Araghi, MDOrange, CA 928681699785279
- Hugo Paz Y Mar, M.D.Orange, CA 928681528231081
- Joseph Preston, M.D.Orange, CA 928681457329674
- Sudhir Rajan, M.D.Orange, CA 928681396961249
Common questions
What is Amir K. Ghiassi, M.D.'s NPI number?
Amir K. Ghiassi, M.D.'s National Provider Identifier (NPI) is 1518983899, issued on Jul 13, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Amir K. Ghiassi, M.D. located?
The NPPES record lists a practice address at 1100 W Stewart Dr, Orange, CA, 92868. Phone: (714) 633-9111. Providers update this record themselves, so call before visiting.
How can I verify Amir K. Ghiassi, M.D.'s license?
NPPES lists California license number C52272, 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.
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.