Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Siamak Karimian, M.D.

Interventional Cardiology Physician in Sherman Oaks, CA · enumerated 2006.

Data current as of Jul 13, 2026 · sourced from CMS NPPES

National Provider Identifier

1225091812

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Registry record

Entity type Individual (Type 1)

Name Dr. Siamak Karimian

Credential M.D.

Sex Male

Practice address 4955 Van Nuys Blvd., Suite 415, Sherman Oaks, CA, 91403

Phone (818) 501-5686

Fax (818) 501-6151

Enumeration date Apr 6, 2006

Last updated in NPPES Mar 28, 2025

Taxonomy & licenses

174400000X Specialist Other Service Providers · License A48218 (CA) Secondary

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License 9596121-1205 (UT) Secondary

207RC0000X Cardiovascular Disease Physician Allopathic & Osteopathic Physicians · License 48201 (KY) Secondary

207RI0011X Interventional Cardiology Physician Allopathic & Osteopathic Physicians · License MD184976 (OR) Secondary

207RI0011X Interventional Cardiology Physician Allopathic & Osteopathic Physicians · License M-15992 (ID) Secondary

207RI0011X Interventional Cardiology Physician Allopathic & Osteopathic Physicians · License 43360 (MT) Secondary

207RI0011X Interventional Cardiology Physician Allopathic & Osteopathic Physicians · License 55914 (TN) Secondary

207RI0011X Interventional Cardiology Physician Allopathic & Osteopathic Physicians · License MD184976 (PA) Secondary

207RI0011X Interventional Cardiology Physician Allopathic & Osteopathic Physicians · License 9596121-1205 (UT) Secondary

207RI0011X Interventional Cardiology Physician Allopathic & Osteopathic Physicians · License 70710 (WI) Primary

MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD credential

Other identifiers

Identifier	Type	State	Issuer
00A482180	Medicaid	CA	-

What is an NPI number?

A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes, even if the provider moves or changes specialty.

Read the full guide → Validate an NPI →

Frequently asked questions

What specialty is Siamak Karimian?

Siamak Karimian is registered in NPPES with the primary taxonomy of Interventional Cardiology Physician. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

Is this the official NPI registry?

No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2025-03-28.