Matthew J. Derosby, PA-C
Medical Physician Assistant · Brewer, ME
Matthew J. Derosby, PA-C is a medical physician assistant with a practice address in Brewer, Maine, and NPI 1942266150, issued on Apr 25, 2006. Check the license (Maine PA534, as entered in NPPES) with the Maine board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Matthew J. Derosby
- Credential
- PA-C
- Primary taxonomy
- Medical Physician Assistant 363AM0700X
- License number
- PA534 ME
Self-reported in NPPES; status is on the state search - Practice location
- 234 State St, Brewer, ME 04412
- Phone
- (207) 989-0550
- Enumerated
- Apr 25, 2006
- Record last updated
- Nov 15, 2023
- Fax
- (207) 989-0551
- Medicaid ID
- 205060099 ME
- Entity
- Type 1 · individual
Also registered at 234 State St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Pauline Johnston, MDFamily Medicine Physician1598705360
- Kathleen Knipscher, DOFamily Medicine Physician1376071894
Verify Matthew J. Derosby in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Maine board licenses this profession
Search for license PA534Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
65% fewer Medicare Part D claims than the average medical physician assistant in 2024
400 Medicare Part D claims for 258 beneficiaries, against an average of 1,148 among the 23,801 providers of this specialty who prescribed in Part D.
Most prescribed
- Azithromycin53 claims
- Prednisone46 claims
- Cephalexin34 claims
- Albuterol Sulfate Hfa33 claims
- Amoxicillin-Clavulanate Potass33 claims
- Polymyxin B Sul-Trimethoprim18 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.
Medical Physician Assistant providers in Maine
There are 238 medical physician assistant records in Maine.
Other medical physician assistant records in Maine
- Emily Akley, PA-CPortland, ME1629629043
- Shirley Ala, PA-CAuburn, ME1619909017
- Shermane Anderson, PACBangor, ME1710930037
- Jessica Arbisi, PA-CBangor, ME1255999173
- Stephen Arnold, PASkowhegan, ME1437715943
- John Bachman, PA-CAugusta, ME1801991484
- Neil Baggesen, PA-CPresque Isle, ME1841827300
- Elizabeth Bailey, PAPortland, ME1215004809
- Olivia Barksdale, PA-CBangor, ME1740152115
- Bernadette Barnum, PA-CScarborough, ME1326016072
Common questions
What is Matthew J. Derosby, PA-C's NPI number?
Matthew J. Derosby, PA-C's National Provider Identifier (NPI) is 1942266150, issued on Apr 25, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Matthew J. Derosby, PA-C located?
The NPPES record lists a practice address at 234 State St, Brewer, ME, 04412. Phone: (207) 989-0550. Providers update this record themselves, so call before visiting.
How can I verify Matthew J. Derosby, PA-C's license?
NPPES lists Maine license number PA534, as entered by the provider. Search the Maine board that licenses this profession; the NPPES record confirms identity only.
How much does Matthew J. Derosby, PA-C prescribe under Medicare Part D?
In 2024, Matthew J. Derosby, PA-C had 400 Medicare Part D claims for 258 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.