Mark C. Sullivan, PA-C
Surgical Physician Assistant · Portsmouth, NH
Mark C. Sullivan, PA-C is a surgical physician assistant with a practice address in Portsmouth, New Hampshire, and NPI 1225075328, issued on May 31, 2006. Check the license (New Hampshire 0238P, as entered in NPPES) with the New Hampshire board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Mark C. Sullivan
- Credential
- PA-C
- Primary taxonomy
- Surgical Physician Assistant 363AS0400X
- License numbers
- 0238P NH
PA 880 ME
Self-reported in NPPES; status is on the state search - Practice location
- 333 Borthwick Avenue, Portsmouth, NH 03801
- Phone
- (603) 559-4111
- Enumerated
- May 31, 2006
- Record last updated
- Oct 4, 2023
- Fax
- (603) 663-6822
- Medicaid ID
- 3076816 NH
- Medicare enrollment
- Enrolled (PECOS I20040629000505); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest surgical physician assistant records → All 125 in New Hampshire → Look up another NPI →
Also registered at 333 Borthwick Avenue
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Darlene Knapp, MDAnatomic Pathology & Clinical Pathology Physician1629067731
- Jordy Looser, PA-CSurgical Physician Assistant1962449066
Verify Mark C. Sullivan in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich New Hampshire board licenses this profession
Search for license 0238PCheck the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
88% fewer Medicare Part D claims than the average surgical physician assistant in 2024
37 Medicare Part D claims for 19 beneficiaries, against an average of 304 among the 10,174 providers of this specialty who prescribed in Part D.
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.
Industry payments in 2024: $308.29
6 payments; by number, the most common kind was food and beverage; the largest payer was Janssen Pharmaceuticals, Inc. The 7,578 providers of this specialty with any payment received $703.95 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- Appledore Medical Group IncPortsmouth, NH
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Mark C. Sullivan among 125 surgical physician assistant records in New Hampshire
Mark C. Sullivan, PA-C is one of 125 surgical physician assistant records with a practice address in New Hampshire. 86% 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 6% of them.
- NPI issued2006 · 6% of these records are older, 60% newer
- In a Medicare fileYes · 86% of these records are
- In the CMS Doctors and Clinicians fileYes · 80% of these records are
- Graduated1992 · median 2010 among the 100 with a school on file
- Record last updated2023 · 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 New Hampshire 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 New Hampshire
There are 125 surgical physician assistant records in New Hampshire.
All 125 in New Hampshire → Every provider in Portsmouth → Surgical Physician Assistant nationwide →
The 8 surgical physician assistant records with the nearest ZIP codes
- Kimberlee Chute, PA-CPortsmouth, NH 038011134166234
- Kim Dedeus, PA-CPortsmouth, NH 038011063408144
- Payton Humphrey, PA-CPortsmouth, NH 038011942131990
- Stephan Jones, PA-CPortsmouth, NH 038011316984412
- Jordy Looser, PA-CPortsmouth, NH 038011962449066
- Scott Mithoefer, PA-CPortsmouth, NH 038011578053914
- David Ryan, PAPortsmouth, NH 038011437409372
- Christina Scardina, PA-CPortsmouth, NH 038011114180163
Common questions
What is Mark C. Sullivan, PA-C's NPI number?
Mark C. Sullivan, PA-C's National Provider Identifier (NPI) is 1225075328, issued on May 31, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Mark C. Sullivan, PA-C located?
The NPPES record lists a practice address at 333 Borthwick Avenue, Portsmouth, NH, 03801. Phone: (603) 559-4111. Providers update this record themselves, so call before visiting.
How can I verify Mark C. Sullivan, PA-C's license?
NPPES lists New Hampshire license number 0238P, as entered by the provider. Search the New Hampshire board that licenses this profession; the NPPES record confirms identity only.
How much does Mark C. Sullivan, PA-C prescribe under Medicare Part D?
In 2024, Mark C. Sullivan, PA-C had 37 Medicare Part D claims for 19 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.