Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Mrs. Insook Yoon, M.D.

Diagnostic Radiology Physician in Clinton, MD · enumerated 2006.

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

National Provider Identifier

1093811986

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Registry record

Entity type Individual (Type 1)

Name Mrs. Insook Yoon

Credential M.D.

Sex Female

Practice address 7503 Surratts Road, Clinton, MD, 20735

Phone (202) 745-8000

Fax (202) 745-2269

Enumeration date Sep 16, 2006

Last updated in NPPES Feb 20, 2012

Taxonomy & licenses

2085R0202X Diagnostic Radiology Physician Allopathic & Osteopathic Physicians · License 0101035465 (VA) Secondary

2085R0202X Diagnostic Radiology Physician Allopathic & Osteopathic Physicians · License D28705 (MD) 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
015296000	Medicaid	MD	-
1093811986	Medicaid	VA	-

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 Insook Yoon?

Insook Yoon is registered in NPPES with the primary taxonomy of Diagnostic Radiology 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.

Other providers at this practice address

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Laboratory Diagnostics Inc Anatomic Pathology & Clinical Pathology Physician · Clinton, MD NPI 1659371680 Gloria Larman Anesthesiology Physician · Clinton, MD NPI 1447242730 Doo Chung Diagnostic Radiology Physician · Clinton, MD NPI 1689664054 Carlos Chiriboga Critical Care Medicine (Internal Medicine) Physician · Clinton, MD NPI 1154311231 Richard Drewyer Diagnostic Radiology Physician · Clinton, MD NPI 1972594786 John Campbell Anesthesiologist Assistant · Clinton, MD NPI 1063497410 Riad Charafeddine Diagnostic Radiology Physician · Clinton, MD NPI 1629055744 Lexie Glover Certified Registered Nurse Anesthetist · Clinton, MD NPI 1922086982

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2012-02-20.