MARK C CULLEN MD
NPI 1497722219
Orthopaedic Surgery - Sports Medicine in Portsmouth, NH
About Mark C Cullen Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MARK C CULLEN MD (NPI 1497722219) is an individual sports medicine provider in Portsmouth, New Hampshire, licensed in New Hampshire (19638) and active in the NPI registry since March 2006. He is enrolled in Medicare PECOS, is affiliated with Wentworth-douglass Hospital, and maintains 2 additional practice locations.
NPPES Registry Identity
Specialties & Licenses
Secondary Practice Locations 2
Other Identifiers 1
Accepted Insurance
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare and accepts Medicare assignment
Mark C Cullen Md 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.
Medicare Billing Reassignment
Medicare enrollment records show Mark Cullen reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Dover, NH 03820
- Reassigned Medicare billing, New Hampshire enrollment
- 559 clinicians in this Medicare group
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Areas of Expertise CMS Part B claims 15
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.
Hospital Affiliations CMS Care Compare
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Wentworth-Douglass Hospital
Acute Care Hospitals · Dover, NHFrequently 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 Cullen's NPI number?
The NPI number for Mark Cullen is 1497722219. It was assigned to this individual provider in the NPPES registry on March 1, 2006.
Where is Mark Cullen located?
Mark Cullen practices at 67 Corporate Dr, 2nd Fl, Portsmouth, NH 03801. The listed phone number is (603) 810-8078.
What is Mark Cullen's specialty?
The primary specialty registered for this NPI is Orthopaedic Surgery, specializing in Sports Medicine, with taxonomy code 207XX0005X.
Is Mark Cullen enrolled in Medicare?
Yes. Mark Cullen 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.
Which organization bills Medicare for Mark Cullen's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Mark Cullen reassigns Medicare benefits to Wentworth Douglass Physician Corporation (Dover, NH). The reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Mark Cullen's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Mark Cullen accept?
Health plans from Ambetter Health, Ambetter from Absolute Total Care, Ambetter of Alabama, Ambetter of North Carolina and Ambetter of Tennessee and 4 other insurers list Mark Cullen 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 Cullen affiliated with any hospitals?
According to CMS data, Mark Cullen is affiliated with Wentworth-Douglass Hospital.
When was this NPI record last updated?
The NPPES record for Mark Cullen was last updated on January 27, 2020. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 6 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.