William S. Grabowski, MD
Diagnostic Radiology Physician · Seattle, WA
William S. Grabowski, MD is a diagnostic radiology physician with a practice address in Seattle, Washington, and NPI 1952336307, issued on Jul 12, 2006. Check the license (Washington MD00030112, as entered in NPPES) on the Washington Medical Commission; the Medicare figures below come from public CMS files.
- Name
- William S. Grabowski
- Credential
- MD
- Primary taxonomy
- Diagnostic Radiology Physician 2085R0202X
- License number
- MD00030112 WA
Self-reported in NPPES; status is on the state search - Practice location
- 16251 Sylvester RD SW, Seattle, WA 98166
- Phone
- (206) 248-9729
- Enumerated
- Jul 12, 2006
- Record last updated
- Dec 5, 2007 (not updated in 19 years: call before relying on the address or phone)
- Fax
- (206) 431-5231
- Medicaid ID
- 8141236 WA
- Entity
- Type 1 · individual
8 nearest diagnostic radiology physician records → All 1,041 in Washington → Look up another NPI →
Also registered at 16251 Sylvester RD SW
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Michael Ricci, MDDiagnostic Radiology Physician1790716611
Verify William S. Grabowski in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWashington Medical Commission
Search for license MD00030112Check 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: $20.90
1 payment: food and beverage; the largest payer was Cook Medical LLC. The 8,048 providers of this specialty with any payment received $2,488.38 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.
William S. Grabowski among 1,041 diagnostic radiology physician records in Washington
William S. Grabowski, 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 fileNo · 66% of these records are
- Record last updated2007 · 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 Seattle → Diagnostic Radiology Physician nationwide →
The 8 diagnostic radiology physician records with the nearest ZIP codes
- Michael Ricci, MDSeattle, WA 981661790716611
- Anastasia Deliganis, MDShoreline, WA 981771992916050
- Ellen Hauptmann, MDShoreline, WA 981771669543708
- Richard Beren, MDSeattle, WA 981441568425841
- Connie Emerson, MDSeattle, WA 981441225060221
- Ken Heilbrunn, M.D.Tukwila, WA 981881285686394
- Christopher Krejci, MDSeattle, WA 981441508829524
- Gregory Lewis, MDSeattle, WA 981441962418814
Common questions
What is William S. Grabowski, MD's NPI number?
William S. Grabowski, MD's National Provider Identifier (NPI) is 1952336307, issued on Jul 12, 2006. An NPI identifies a provider in billing; it is not a license.
Where is William S. Grabowski, MD located?
The NPPES record lists a practice address at 16251 Sylvester RD SW, Seattle, WA, 98166. Phone: (206) 248-9729. Providers update this record themselves, so call before visiting.
How can I verify William S. Grabowski, MD's license?
NPPES lists Washington license number MD00030112, 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.