Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
NPIDirectory

Mark C Sullivan, PA-C

Individual provider Surgical Physician Assistant · NPI 1225075328

Mark C Sullivan, PA-C is a Physician Assistant in Portsmouth, New Hampshire. Qualified in 1992, 34 years ago. Practices with Appledore Medical Group Inc, a 198-clinician group, works from 2 locations and accepts Medicare assignment. Licensed in Maine and New Hampshire.

Years since qualifying
34
Licensed in
ME, NH
In the registry since
2006
Specialties on file
2
What do these letters mean?
PA-C — Physician Assistant, Certified
A physician assistant who holds current national certification.

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Practice location Address checks out

333 Borthwick Ave Ste 402
Portsmouth, NH 03801
Phone: (603) 559-4111
Fax: (603) 663-6822
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (1)

  • 333 Borthwick Ave, Portsmouth, NH 03801-7128 — (603) 559-4111

Specialties & licences

Surgical Physician Assistant (primary) Taxonomy 363AS0400X · Licence 0238P (NH)
Surgical Physician Assistant Taxonomy 363AS0400X · Licence PA 880 (ME)

Record details

NPI number1225075328
Entity typeIndividual (Type 1)
GenderMale
Credentials PA-C
Sole proprietorNo
NPI enumeratedMay 31, 2006
Last updated in NPPESOctober 4, 2023
Certification dateAugust 16, 2021

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyPHYSICIAN ASSISTANT
Medical schoolOTHER
Graduated 1992 (34 years in practice)
Group practice Appledore Medical Group Inc — 198 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations2 on file with Medicare

Other providers in Portsmouth