Mark Samuelsen, PA-C
Surgical Physician Assistant · Boston, MA
Mark Samuelsen, PA-C is a surgical physician assistant with a practice address in Boston, Massachusetts, and NPI 1407381213, issued on Apr 30, 2017. Check the license with the Massachusetts board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Mark Samuelsen
- Credential
- PA-C
- Primary taxonomy
- Surgical Physician Assistant 363AS0400X
- Practice location
- 55 Fruit St, Boston, MA 02114
- Phone
- (617) 726-2000
- Enumerated
- Apr 30, 2017
- Record last updated
- Apr 30, 2017 (not updated in 9 years: call before relying on the address or phone)
- Entity
- Type 1 · individual
8 nearest surgical physician assistant records → All 516 in Massachusetts → Look up another NPI →
Also registered at 55 Fruit St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Mark Samuelsen in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Massachusetts board licenses this professionCheck the board
- 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
52% fewer Medicare Part D claims than the average surgical physician assistant in 2024
146 Medicare Part D claims for 23 beneficiaries, against an average of 304 among the 10,174 providers of this specialty who prescribed in Part D. Brand-name drugs were 12% of claims.
Most prescribed
- Metoprolol Succinate20 claims
- Ampicillin Sodium15 claims
- Atorvastatin Calcium11 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.
Mark Samuelsen among 516 surgical physician assistant records in Massachusetts
Mark Samuelsen, PA-C is one of 516 surgical physician assistant records with a practice address in Massachusetts. 82% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2017, is newer than 66% of them.
- NPI issued2017 · 66% of these records are older, 30% newer
- In a Medicare fileYes · 82% of these records are
- In the CMS Doctors and Clinicians fileNo · 69% of these records are
- Record last updated2017 · 54% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363AS0400X and a Massachusetts practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Surgical Physician Assistant providers in Massachusetts
There are 516 surgical physician assistant records in Massachusetts.
All 516 in Massachusetts → Every provider in Boston → Surgical Physician Assistant nationwide →
The 8 surgical physician assistant records with the nearest ZIP codes
- Melissa Chittle, PA-CBoston, MA 021141518268903
- Heather Colasanto, PABoston, MA 021141073950077
- Amie Gauthier, PA-CBoston, MA 021141225367949
- Ryan Godfrey, PA-CBoston, MA 021141447683016
- Michael Llewellyn, PA-CBoston, MA 021141346688504
- Robert McKenna, PABoston, MA 021141912992876
- Edward Morris, PA-CBoston, MA 021141760153746
- Julie Mucciarone, PA-CBoston, MA 021141205131604
Common questions
What is Mark Samuelsen, PA-C's NPI number?
Mark Samuelsen, PA-C's National Provider Identifier (NPI) is 1407381213, issued on Apr 30, 2017. An NPI identifies a provider in billing; it is not a license.
Where is Mark Samuelsen, PA-C located?
The NPPES record lists a practice address at 55 Fruit St, Boston, MA, 02114. Phone: (617) 726-2000. Providers update this record themselves, so call before visiting.
How can I verify Mark Samuelsen, PA-C's license?
Search the Massachusetts board that licenses this profession; the NPPES record confirms identity only.
How much does Mark Samuelsen, PA-C prescribe under Medicare Part D?
In 2024, Mark Samuelsen, PA-C had 146 Medicare Part D claims for 23 beneficiaries; the average among surgical physician assistant prescribers was 304. 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.