NPPES file of Aug 9, 2026

Tuan Phan, MD

Internal Medicine Physician · Seattle, WA

Tuan Phan, MD is an internal medicine physician with a practice address in Seattle, Washington, and NPI 1558382150, issued on Jul 21, 2006. Check the license (Washington MD60506629, as entered in NPPES) on the Washington Medical Commission; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1558382150
Name
Tuan Phan
Credential
MD
Primary taxonomy
Internal Medicine Physician 207R00000X
License numbers
MD60506629 WA
A132689 CA
Self-reported in NPPES; status is on the state search
Practice location
201 16TH Ave E, Seattle, WA 98112
Phone
(206) 326-3000
Enumerated
Jul 21, 2006
Record last updated
Apr 28, 2021 (not updated in 5 years: call before relying on the address or phone)
Medicaid ID
8329161 WA
Medicare enrollment
Enrolled (PECOS I20160916001511); accepts Medicare assignment
Medical or professional school
University Of Washington School Of Medicine, 2011
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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Also registered at 201 16TH Ave E

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Farangis Abab, RNHome Health Registered Nurse1639473408
  2. Joonis Abdulkhader, M.D.Family Medicine Physician1518154335
  3. Bashir Abumenjel, REGISTERED NURSEHome Health Registered Nurse1275352510
  4. Stephanie Abutin, ,MS, CCC-SLPSpeech-Language Pathologist1902522444
  5. Christopher Adrig, PA-CPhysician Assistant1184606089
  6. Sanjay Agarwal, MD, FCCP, FAASMSleep Medicine (Internal Medicine) Physician1477523249

Verify Tuan Phan in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWashington Medical Commission
    Search for license MD60506629
    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Open the Washington license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

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98% fewer Medicare Part D claims than the average internal medicine physician in 2024

69 Medicare Part D claims for 23 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D.

  1. Tuan Phan69
  2. Specialty average3,176

Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.

Bills Medicare through one group practice

  1. Kaiser Foundation Health Plan OF WashingtonSeattle, WA

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

Tuan Phan among 3,079 internal medicine physician records in Washington

Tuan Phan, MD is one of 3,079 internal medicine physician records with a practice address in Washington. 75% 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 8% of them.

  • NPI issued2006 · 8% of these records are older, 55% newer
  • In a Medicare fileYes · 75% of these records are
  • In the CMS Doctors and Clinicians fileYes · 60% of these records are
  • Graduated2011 · median 2006 among the 1,852 with a school on file
  • Record last updated2021 · 63% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a Washington practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

821 internal medicine physician records list a practice address in Seattle

They are 821 of the 41,956 NPPES records with a practice address in Seattle, and 3,079 internal medicine physician records in Washington.

The 8 internal medicine physician records with the nearest ZIP codes

  1. David Arterburn, MDSeattle, WA 981121356393441
  2. Rachel BedaSeattle, WA 981121073699872
  3. Katherine Brown, MDSeattle, WA 981121851346506
  4. Paul Bunge, M. D.Seattle, WA 981121033228762
  5. Sari Davison, MDSeattle, WA 981121245327659
  6. Charles Janeway, M.D.Seattle, WA 981121043375199
  7. Mona Kathuria, D.O.Seattle, WA 981121801858279
  8. Harpreet Kaur, MDSeattle, WA 981121124097811

Common questions

What is Tuan Phan, MD's NPI number?

Tuan Phan, MD's National Provider Identifier (NPI) is 1558382150, issued on Jul 21, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Tuan Phan, MD located?

The NPPES record lists a practice address at 201 16TH Ave E, Seattle, WA, 98112. Phone: (206) 326-3000. Providers update this record themselves, so call before visiting.

How can I verify Tuan Phan, MD's license?

NPPES lists Washington license number MD60506629, 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.

How much does Tuan Phan, MD prescribe under Medicare Part D?

In 2024, Tuan Phan, MD had 69 Medicare Part D claims for 23 beneficiaries; the average among internal medicine physician prescribers was 3,176. Part D covers Medicare prescriptions 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.