Margaret Shannon Griffin, PA-C
Physician Assistant · Biddeford, ME
Margaret Shannon Griffin, PA-C is a physician assistant with a practice address in Biddeford, Maine, and NPI 1124593249, issued on Oct 4, 2018. Check the license (Maine 1907, as entered in NPPES) with the Maine board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Margaret Shannon Griffin
- Credential
- PA-C
- Primary taxonomy
- Physician Assistant 363A00000X
- License numbers
- 1907 ME
1903 ME
1408 NH
Self-reported in NPPES; status is on the state search - Practice location
- 24 West Cole RD Ste 104, Biddeford, ME 04005
- Phone
- (207) 283-1602
- Enumerated
- Oct 4, 2018
- Record last updated
- Nov 1, 2021 (not updated in 5 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20190409001963); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest physician assistant records → All 979 in Maine → Look up another NPI →
Verify Margaret Shannon Griffin in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Maine board licenses this profession
Search for license 1907Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
2.3 times the Medicare Part D claims of the average physician assistant in 2024
1,940 Medicare Part D claims for 464 beneficiaries, against an average of 830 among the 101,058 providers of this specialty who prescribed in Part D. Brand-name drugs were 10% of claims.
Most prescribed
- Tamsulosin Hcl560 claims
- Finasteride280 claims
- Solifenacin Succinate142 claims
- Myrbetriq98 claims
- Silodosin89 claims
- Dutasteride73 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 MIPS final score for 2023 (Medicare payment program): 98.1 of 100
The Merit-based Incentive Payment System score is reported for this clinician. 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; category weights for 2023 (qpp.cms.gov).
Bills Medicare through one group practice
- MainehealthBiddeford, ME
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Margaret Shannon Griffin among 979 physician assistant records in Maine
Margaret Shannon Griffin, PA-C is one of 979 physician assistant records with a practice address in Maine. 79% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2018, is newer than 59% of them.
- NPI issued2018 · 59% of these records are older, 36% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 66% of these records are
- Graduated2018 · median 2017 among the 648 with a school on file
- Record last updated2021 · 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 363A00000X and a Maine practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
41 physician assistant records list a practice address in Biddeford
They are 41 of the 905 NPPES records with a practice address in Biddeford, and 979 physician assistant records in Maine.
All 979 in Maine → Every provider in Biddeford → Physician Assistant nationwide →
The 8 physician assistant records with the nearest ZIP codes
- Lauren Alofs, PA-CBiddeford, ME 040051942682034
- Kimberly Caldwell, PABiddeford, ME 040051043345390
- Dylan Clemens, PA-CBiddeford, ME 040051811481807
- James Conley, PABiddeford, ME 040051235367764
- Kenneth Duge, PA-CBiddeford, ME 040051982089629
- Beth Hart, PA-CBiddeford, ME 040051164850251
- Erin Haynes, PABiddeford, ME 040051952356958
- Jessie Klauer, PA-CBiddeford, ME 040051528583267
Common questions
What is Margaret Shannon Griffin, PA-C's NPI number?
Margaret Shannon Griffin, PA-C's National Provider Identifier (NPI) is 1124593249, issued on Oct 4, 2018. An NPI identifies a provider in billing; it is not a license.
Where is Margaret Shannon Griffin, PA-C located?
The NPPES record lists a practice address at 24 West Cole RD Ste 104, Biddeford, ME, 04005. Phone: (207) 283-1602. Providers update this record themselves, so call before visiting.
How can I verify Margaret Shannon Griffin, PA-C's license?
NPPES lists Maine license number 1907, as entered by the provider. Search the Maine board that licenses this profession; the NPPES record confirms identity only.
How much does Margaret Shannon Griffin, PA-C prescribe under Medicare Part D?
In 2024, Margaret Shannon Griffin, PA-C had 1,940 Medicare Part D claims for 464 beneficiaries; the average among physician assistant prescribers was 830. Part D covers Medicare prescriptions only.
What is Margaret Shannon Griffin, PA-C's MIPS final score?
The 2023 MIPS final score is 98.1 of 100. 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.