William Guy Mahan, PA-C
Medical Physician Assistant · Bar Harbor, ME
William Guy Mahan, PA-C is a medical physician assistant with a practice address in Bar Harbor, Maine, and NPI 1962514356, issued on Aug 31, 2006. Check the license (Maine PA385, as entered in NPPES) with the Maine board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- William Guy Mahan
- Credential
- PA-C
- Primary taxonomy
- Medical Physician Assistant 363AM0700X
- License number
- PA385 ME
Self-reported in NPPES; status is on the state search - Practice location
- 10 Wayman LN, Bar Harbor, ME 04609
- Phone
- (207) 288-5081
- Enumerated
- Aug 31, 2006
- Record last updated
- Mar 6, 2013 (not updated in 13 years: call before relying on the address or phone)
- Fax
- (207) 288-8642
- Medicaid ID
- 1023800100 ME
- Entity
- Type 1 · individual
8 nearest medical physician assistant records → All 238 in Maine → Look up another NPI →
Also registered at 10 Wayman LN
A shared address usually means a shared clinic or building; it does not show who employs whom.
- John Allerding, D.OFamily Medicine Physician1104895747
- Angela Arnold-Ross, RN, MSNFamily Nurse Practitioner1548713191
- Lynne Assaf, MSWClinical Social Worker1740307313
- Katelynn Badger, CRNACertified Registered Nurse Anesthetist1710508478
- Kyla Baxter, OTR/LPhysical Rehabilitation Occupational Therapist1902761331
- Brenda Beckett, P.A.-CMedical Physician Assistant1134214018
Verify William Guy Mahan in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Maine board licenses this profession
Search for license PA385Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
89% fewer Medicare Part D claims than the average medical physician assistant in 2024
125 Medicare Part D claims for 106 beneficiaries, against an average of 1,148 among the 23,801 providers of this specialty who prescribed in Part D. Brand-name drugs were 13% of claims.
Most prescribed
- Prednisone15 claims
- Ciprofloxacin Hcl12 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.
The practice group's MIPS final score for 2023 (Medicare payment program): 88 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
William Guy Mahan among 238 medical physician assistant records in Maine
William Guy Mahan, PA-C is one of 238 medical physician assistant records with a practice address in Maine. 77% 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 4% of them.
- NPI issued2006 · 4% of these records are older, 64% newer
- In a Medicare fileYes · 77% of these records are
- In the CMS Doctors and Clinicians fileNo · 59% of these records are
- Record last updated2013 · 47% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363AM0700X and a Maine practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
5 medical physician assistant records list a practice address in Bar Harbor
They are 5 of the 157 NPPES records with a practice address in Bar Harbor, and 238 medical physician assistant records in Maine.
All 238 in Maine → Every provider in Bar Harbor → Medical Physician Assistant nationwide →
The 8 medical physician assistant records with the nearest ZIP codes
- Brenda Beckett, P.A.-CBar Harbor, ME 046091134214018
- Gerald Keenan, PA-CBar Harbor, ME 046091336295971
- Gordon Murphy, PA-CBar Harbor, ME 046091801027164
- Jane Tawney, PA-CBar Harbor, ME 046091306917612
- Jeffrey Davis, PACEllsworth, ME 046051851434260
- Alyssa Diver, PA-CEllsworth, ME 046051639846983
- Dana Green, PACEllsworth, ME 046051790867034
- Hunt Gressitt, PAEllsworth, ME 046051770520124
Common questions
What is William Guy Mahan, PA-C's NPI number?
William Guy Mahan, PA-C's National Provider Identifier (NPI) is 1962514356, issued on Aug 31, 2006. An NPI identifies a provider in billing; it is not a license.
Where is William Guy Mahan, PA-C located?
The NPPES record lists a practice address at 10 Wayman LN, Bar Harbor, ME, 04609. Phone: (207) 288-5081. Providers update this record themselves, so call before visiting.
How can I verify William Guy Mahan, PA-C's license?
NPPES lists Maine license number PA385, as entered by the provider. Search the Maine board that licenses this profession; the NPPES record confirms identity only.
How much does William Guy Mahan, PA-C prescribe under Medicare Part D?
In 2024, William Guy Mahan, PA-C had 125 Medicare Part D claims for 106 beneficiaries; the average among medical physician assistant prescribers was 1,148. Part D covers Medicare prescriptions only.
What is William Guy Mahan, PA-C's MIPS final score?
The 2023 MIPS final score is 88 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.
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.