Mark Chen, MD, PHD
NPI 1023695251 · Radiation Oncology Physician · Durham, NC
Enrolled with Medicare as Order and Referring Only - Radiation Oncology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Mark Chen, MD, PHD is a Radiation Oncology Physician provider in Durham, NC (NPI 1023695251).
Provider details
- NPI number
- 1023695251
- Entity type
- Individual
- Primary specialty
- Radiation Oncology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD, PHD
- Sex
- Male
- Sole proprietor
- No
- License
- 2026-01269 (NC)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
5 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
Practice location
Mailing address
Registry dates
- Enumerated
- 2021-03-25
- Last updated
- 2026-05-13
- Certified
- 2026-05-13
Frequently asked questions
- What is Mark Chen's NPI number?
- Mark Chen's National Provider Identifier (NPI) is 1023695251, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mark Chen's specialty?
- Mark Chen is listed in the NPPES registry with a primary specialty of Radiation Oncology Physician (Allopathic & Osteopathic Physicians).
- Where is Mark Chen located?
- Mark Chen's practice location on file with NPPES is 20 Duke Medicine Cir, Durham, NC 27710-2000.
- What is Mark Chen's phone number?
- The practice phone number listed in the NPPES registry for Mark Chen is (919) 660-2100.
- Does Mark Chen accept Medicare?
- Mark Chen is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Mark Chen's NPI active?
- Yes — Mark Chen's NPI (1023695251) is active in the NPPES registry as of the last update on 2026-05-13.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.