Michael Dwyer Grennan
Physician Assistant · Gig Harbor, WA
Michael Dwyer Grennan is a physician assistant with a practice address in Gig Harbor, Washington, and NPI 1669829933, issued on May 17, 2016. Check the license (Washington PA60805134, as entered in NPPES) with the Washington board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Michael Dwyer Grennan
- Primary taxonomy
- Physician Assistant 363A00000X
- License number
- PA60805134 WA
Self-reported in NPPES; status is on the state search - Practice location
- 4779 Point Fosdick Dr Ste 500, Gig Harbor, WA 98335
- Phone
- (253) 530-8460
- Enumerated
- May 17, 2016
- Record last updated
- Feb 1, 2023
- Fax
- (253) 530-8465
- Entity
- Type 1 · individual
8 nearest physician assistant records → All 3,718 in Washington → Look up another NPI →
Verify Michael Dwyer Grennan in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Washington board licenses this profession
Search for license PA60805134Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
53% fewer Medicare Part D claims than the average physician assistant in 2024
390 Medicare Part D claims for 246 beneficiaries, against an average of 830 among the 101,058 providers of this specialty who prescribed in Part D.
Most prescribed
- Amoxicillin64 claims
- Prednisone59 claims
- Cephalexin33 claims
- Nitrofurantoin Mono-Macro33 claims
- Albuterol Sulfate Hfa28 claims
- Azithromycin20 claims
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.
Michael Dwyer Grennan among 3,718 physician assistant records in Washington
Michael Dwyer Grennan is one of 3,718 physician assistant records with a practice address in Washington. 76% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2016, is newer than 53% of them.
- NPI issued2016 · 53% of these records are older, 42% newer
- In a Medicare fileYes · 76% of these records are
- In the CMS Doctors and Clinicians fileNo · 66% of these records are
- Record last updated2023 · 48% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363A00000X and a Washington practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
25 physician assistant records list a practice address in Gig Harbor
They are 25 of the 1,206 NPPES records with a practice address in Gig Harbor, and 3,718 physician assistant records in Washington.
All 3,718 in Washington → Every provider in Gig Harbor → Physician Assistant nationwide →
The 8 physician assistant records with the nearest ZIP codes
- Benjamin Barrett, PA-CGig Harbor, WA 983351922607373
- William Bies, PAGig Harbor, WA 983351760414510
- Juliene Bottom, P.A.-CGig Harbor, WA 983351720266844
- Christie Heany, PAGig Harbor, WA 983351518150119
- Suzette Iverson, MPH PACGig Harbor, WA 983351144204173
- Erica Kafka, PA-CGig Harbor, WA 983351528362217
- Eric Lauer, PACGig Harbor, WA 983351942225875
- Taylor Martin, PA-CGig Harbor, WA 983351134644990
Common questions
What is Michael Dwyer Grennan's NPI number?
Michael Dwyer Grennan's National Provider Identifier (NPI) is 1669829933, issued on May 17, 2016. An NPI identifies a provider in billing; it is not a license.
Where is Michael Dwyer Grennan located?
The NPPES record lists a practice address at 4779 Point Fosdick Dr Ste 500, Gig Harbor, WA, 98335. Phone: (253) 530-8460. Providers update this record themselves, so call before visiting.
How can I verify Michael Dwyer Grennan's license?
NPPES lists Washington license number PA60805134, as entered by the provider. Search the Washington board that licenses this profession; the NPPES record confirms identity only.
How much does Michael Dwyer Grennan prescribe under Medicare Part D?
In 2024, Michael Dwyer Grennan had 390 Medicare Part D claims for 246 beneficiaries; the average among physician assistant prescribers was 830. 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.