Johan K. Ahn, MD
Diagnostic Radiology Physician · Tacoma, WA
Johan K. Ahn, MD is a diagnostic radiology physician with a practice address in Tacoma, Washington, and NPI 1972546240, issued on Jun 14, 2006. Check the license (Washington MD00042505, as entered in NPPES) on the Washington Medical Commission; the Medicare figures below come from public CMS files.
- Name
- Johan K. Ahn
- Credential
- MD
- Primary taxonomy
- Diagnostic Radiology Physician 2085R0202X
- License numbers
- MD00042505 WA
A84698 CA
MD-9933 HI
MD151077 OR
Self-reported in NPPES; status is on the state search - Practice location
- 1304 Fawcett Ave Ste 100, Tacoma, WA 98402
- Phone
- (253) 761-4200
- Enumerated
- Jun 14, 2006
- Record last updated
- Dec 30, 2024
- Fax
- (253) 761-4201
- Medicaid IDs
- 8399263 WA
1060681 OR
1060681 WA - Medicare enrollment
- Enrolled (PECOS I20220822000739); accepts Medicare assignment
- Medical or professional school
- New York Medical College, 1995
- Entity
- Type 1 · individual
8 nearest diagnostic radiology physician records → All 1,041 in Washington → Look up another NPI →
Also registered at 1304 Fawcett Ave Ste 100
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Jaime All, M.D.Vascular & Interventional Radiology Physician1467681957
- Patrick Bacon, M.D.Diagnostic Radiology Physician1477866739
- Joanna Bain, PA-CPhysician Assistant1609486026
Verify Johan K. Ahn in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWashington Medical Commission
Search for license MD00042505Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Bills Medicare through 4 group practices
- Beverly Radiology Medical Group IIICorona, CA
- Kauai Medical ClinicLihue, HI
- Queens North Hawaii Community HospitalHonolulu, HI
- Queens University Medical GroupHonolulu, HI
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Johan K. Ahn among 1,041 diagnostic radiology physician records in Washington
Johan K. Ahn, MD is one of 1,041 diagnostic radiology physician records with a practice address in Washington. 67% 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 10% of them.
- NPI issued2006 · 10% of these records are older, 49% newer
- In a Medicare fileYes · 67% of these records are
- In the CMS Doctors and Clinicians fileYes · 66% of these records are
- Graduated1995 · median 2004 among the 682 with a school on file
- Record last updated2024 · 59% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2085R0202X and a Washington practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Diagnostic Radiology Physician providers in Washington
There are 1,041 diagnostic radiology physician records in Washington.
All 1,041 in Washington → Every provider in Tacoma → Diagnostic Radiology Physician nationwide →
The 8 diagnostic radiology physician records with the nearest ZIP codes
- Lance Becker, MDTacoma, WA 984021093709552
- Jill Dobbins, MDTacoma, WA 984021538123047
- Cynthia Holmes, MDTacoma, WA 984021225053630
- Chuck Martin, M.D.Tacoma, WA 984021053346403
- James Nudelman, M.D.Tacoma, WA 984021992703474
- Peter Ory, M.D.Tacoma, WA 984021053344184
- Parag Rami, MDTacoma, WA 984021982679585
- Joseph Sam, M.D.Tacoma, WA 984021861447898
Common questions
What is Johan K. Ahn, MD's NPI number?
Johan K. Ahn, MD's National Provider Identifier (NPI) is 1972546240, issued on Jun 14, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Johan K. Ahn, MD located?
The NPPES record lists a practice address at 1304 Fawcett Ave Ste 100, Tacoma, WA, 98402. Phone: (253) 761-4200. Providers update this record themselves, so call before visiting.
How can I verify Johan K. Ahn, MD's license?
NPPES lists Washington license number MD00042505, as entered by the provider. Search the Washington Medical Commission at https://wahelms.my.site.com/s/license-search. 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.