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MARK C SULLIVAN PA-C
NPI 1225075328
Physician Assistant - Surgical in Portsmouth, NH

Active since May 31, 2006PECOS EnrolledAccepts Medicare Assignment
333 BORTHWICK AVENUE, SUITE 402, PORTSMOUTH, NH 03801(603) 559-4111(603) 663-6822 Get Directions Write a Review

NPPES record last updated: October 4, 2023. Verified against the NPPES registry weekly; last sync: August 16, 2026.

Record update history: Oct 4, 2023, Jan 7, 2022, Aug 16, 2021 and 1 more (4 updates tracked since 2017).

About Mark C Sullivan Pa-c NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

MARK C SULLIVAN PA-C (NPI 1225075328) is an individual surgical provider in Portsmouth, New Hampshire, licensed in New Hampshire (0238P) and active in the NPI registry since May 2006. He is enrolled in Medicare PECOS, is affiliated with Portsmouth Regional Hospital, and is a graduate of Other (1992).

NPPES Registry Identity

NPI1225075328
Entity TypeIndividualMale
Primary Taxonomy363AS0400X
Provider Legal NameMARK C SULLIVANCredential: PA-C
Location Address333 BORTHWICK AVENUE, SUITE 402Portsmouth, NH 03801
Mailing Address333 Borthwick Avenue, Suite 402Portsmouth, NH 03801 · (603) 559-4111 · Fax (603) 559-4110
Phone(603) 559-4111
Fax(603) 663-6822
Sole ProprietorNo
Medical School CMSOtherGraduated 1992
Enumeration DateMay 31, 2006
Last NPPES UpdateOctober 4, 20234 updates tracked since enumeration
NPPES CertifiedAugust 16, 2021
✔ NPI 1225075328 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPhysician Assistant · SurgicalPhysician Assistants & Advanced Practice Nursing Providers
Taxonomy Code363AS0400X
Licenses✔ Licensed in NH · 0238P✔ Licensed in ME · PA 880
333 BORTHWICK AVENUE, Portsmouth, NH 03801
Open in Google Maps ↗

Other Identifiers 1

Medicaid3076816NH

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Ambetter from NH Healthy Families, Anthem Blue Cross and Blue Sheld, Anthem Blue Cross and Blue Shield.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Mark C Sullivan Pa-c is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID9638155658
PECOS Enrollment IDI20040629000505
Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Areas of Expertise CMS Part B claims 2

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes 99232
Follow-up hospital inpatient care involves daily check-ups while you're admitted in the hospital. Typically, a healthcare provider spends about 25 minutes each day reviewing your condition, adjusting treatment if needed, and answering any questions you might have.
29 services27 patients
Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes 99222
Initial hospital inpatient care is a service where a healthcare provider spends about 50 minutes per day overseeing your care while you're admitted in the hospital. This includes reviewing your health status, planning your treatment, and ensuring your safety and comfort.
11 services11 patients

Hospital Affiliations CMS Care Compare 2

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

Portsmouth Regional Hospital

Acute Care Hospitals · Portsmouth, NH
3/5 CMS rating
OwnershipProprietary
CMS Certification Number300029
Location333 Borthwick AvePortsmouth, NH 03801 · Rockingham County
Emergency services Birthing friendly

Huggins Hospital

Critical Access Hospitals · Wolfeboro, NH
3/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number301312
Location240 South Main StreetWolfeboro, NH 03894 · Carroll County
Emergency services

Other Providers at the Same Location NPPES 15

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

MR. HANAD OMAR M.D.
Internal Medicine
333 BORTHWICK AVENUE
PORTSMOUTH, NH 03801
Rockingham County (603) 436-5110
DR. SYED M PEERAN MD
Surgery (Vascular Surgery)
333 BORTHWICK AVENUE, SUITE 402
PORTSMOUTH, NH 03801
Rockingham County (603) 559-4111
MR. RAHIM SHIVJI M.D.
Student in an Organized Health Care Education/Training Program
333 BORTHWICK AVENUE
PORTSMOUTH, NH 03801
Rockingham County (603) 436-5110
DR. JOHN ANTHONY FEDERICO MD
Thoracic Surgery (Cardiothoracic Vascular Surgery)
333 BORTHWICK AVENUE, SUITE 402
PORTSMOUTH, NH 03801
Rockingham County (603) 559-4111
JOHN MICHAEL PANOPOULOS D.O.
Anesthesiology
333 BORTHWICK AVENUE, PORTSMOUTH ANESTHESIA ASSOCIATES
PORTSMOUTH, NH 03801
Rockingham County (603) 749-0043
WILMER JONES III MD
Surgery (Vascular Surgery)
333 BORTHWICK AVENUE, SUITE 402
PORTSMOUTH, NH 03801
Rockingham County (603) 559-4111
PETER J DOURDOUFIS DO
Internal Medicine (Cardiovascular Disease)
333 BORTHWICK AVENUE, SUITE 401
PORTSMOUTH, NH 03801
Rockingham County (603) 433-5300
DR. ANWAR MUSBAH ABOUHAMRA M.D
Student in an Organized Health Care Education/Training Program
333 BORTHWICK AVENUE
PORTSMOUTH, NH 03801
Rockingham County (603) 368-6500

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Mark Sullivan's NPI number?

The NPI number for Mark Sullivan is 1225075328. It was assigned to this individual provider in the NPPES registry on May 31, 2006.

Where is Mark Sullivan located?

Mark Sullivan practices at 333 Borthwick Avenue Suite 402, Portsmouth, NH 03801. The listed phone number is (603) 559-4111.

What is Mark Sullivan's specialty?

The primary specialty registered for this NPI is Physician Assistant, specializing in Surgical, with taxonomy code 363AS0400X.

Is Mark Sullivan enrolled in Medicare?

Yes. Mark Sullivan is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

What insurance does Mark Sullivan accept?

Health plans from Ambetter from NH Healthy Families, Anthem Blue Cross and Blue Sheld and Anthem Blue Cross and Blue Shield list Mark Sullivan as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

Is Mark Sullivan affiliated with any hospitals?

According to CMS data, Mark Sullivan is affiliated with Portsmouth Regional Hospital and Huggins Hospital.

When was this NPI record last updated?

The NPPES record for Mark Sullivan was last updated on October 4, 2023. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.