Garbis D. Keusseyan
Medical Physician Assistant · Millinocket, ME
Garbis D. Keusseyan is a medical physician assistant with a practice address in Millinocket, Maine, and NPI 1285389973, issued on Feb 21, 2022. Check the license (Maine PA2434, as entered in NPPES) with the Maine board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Garbis D. Keusseyan
- Primary taxonomy
- Medical Physician Assistant 363AM0700X
- License number
- PA2434 ME
Self-reported in NPPES; status is on the state search - Practice location
- 50 Summer St, Millinocket, ME 04462
- Phone
- (207) 538-3700
- Enumerated
- Feb 21, 2022
- Record last updated
- May 12, 2026
- Fax
- (207) 528-2880
- Medicare enrollment
- Enrolled (PECOS I20221017000127); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest medical physician assistant records → All 238 in Maine → Look up another NPI →
Also registered at 50 Summer St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Nancy Bears, IPDHDental Hygienist1003851031
- Laura Bouchard, RNCase Management Registered Nurse1881249779
- Christopher Castonguay, DMDDentist1477046571
- Catherine Cesare, DENTAL HYGIENISTDental Hygienist1194968065
- Richard Chin, O.D.Optometrist1053864488
- Robert Cleaveland, PHYSICIAN ASSISTANTMedical Physician Assistant1518350610
Verify Garbis D. Keusseyan in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Maine board licenses this profession
Search for license PA2434Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
5.4 times the Medicare Part D claims of the average medical physician assistant in 2024
6,225 Medicare Part D claims for 659 beneficiaries, against an average of 1,148 among the 23,801 providers of this specialty who prescribed in Part D. Brand-name drugs were 14% of claims. 152 claims were for opioids.
Most prescribed
- Atorvastatin Calcium364 claims
- Lisinopril234 claims
- Amlodipine Besylate212 claims
- Losartan Potassium186 claims
- Metoprolol Succinate145 claims
- Pantoprazole Sodium134 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.
Bills Medicare through one group practice
- Katahdin Valley Health CenterPatten, ME
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Garbis D. Keusseyan among 238 medical physician assistant records in Maine
Garbis D. Keusseyan 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 2022, is newer than 91% of them.
- NPI issued2022 · 91% of these records are older, 5% newer
- In a Medicare fileYes · 77% of these records are
- In the CMS Doctors and Clinicians fileYes · 59% of these records are
- Graduated2022 · median 2013 among the 141 with a school on file
- Record last updated2026 · 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).
2 medical physician assistant records list a practice address in Millinocket
They are 2 of the 103 NPPES records with a practice address in Millinocket, and 238 medical physician assistant records in Maine.
All 238 in Maine → Every provider in Millinocket → Medical Physician Assistant nationwide →
The 8 medical physician assistant records with the nearest ZIP codes
- Robert Cleaveland, PHYSICIAN ASSISTANTMillinocket, ME 044621518350610
- William Head, PA-C.Lincoln, ME 044571780667873
- Christopher Mannari, PA-CLincoln, ME 044571750348116
- Sarah Walzak, PA-COrono, ME 044731487197984
- Ethan Evankow, PADover Foxcroft, ME 044261528580966
- Brittany Hackett, PA-CDover Foxcroft, ME 044261104549229
- Crystal Macclintock, RPA-CDover Foxcroft, ME 044261700024783
- Erin Miller, PA-CDover Foxcroft, ME 044261194102327
Common questions
What is Garbis D. Keusseyan's NPI number?
Garbis D. Keusseyan's National Provider Identifier (NPI) is 1285389973, issued on Feb 21, 2022. An NPI identifies a provider in billing; it is not a license.
Where is Garbis D. Keusseyan located?
The NPPES record lists a practice address at 50 Summer St, Millinocket, ME, 04462. Phone: (207) 538-3700. Providers update this record themselves, so call before visiting.
How can I verify Garbis D. Keusseyan's license?
NPPES lists Maine license number PA2434, as entered by the provider. Search the Maine board that licenses this profession; the NPPES record confirms identity only.
How much does Garbis D. Keusseyan prescribe under Medicare Part D?
In 2024, Garbis D. Keusseyan had 6,225 Medicare Part D claims for 659 beneficiaries; the average among medical physician assistant prescribers was 1,148. 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.