Mark Selby, D.O.
NPI 1265476782 · Internal Medicine Physician · Pittsfield, MA
Enrolled with Medicare as Order and Referring Only - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Mark Selby, D.O. is a Internal Medicine Physician provider in Pittsfield, MA (NPI 1265476782).
Provider details
- NPI number
- 1265476782
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- D.O.
- Sex
- Male
- License
- MA43107 (MA)
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
20 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
- 2006-06-15
- Last updated
- 2007-07-08
Frequently asked questions
- What is Mark Selby's NPI number?
- Mark Selby's National Provider Identifier (NPI) is 1265476782, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mark Selby's specialty?
- Mark Selby is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Mark Selby located?
- Mark Selby's practice location on file with NPPES is 73 Eagle St, Pittsfield, MA 01201-4714.
- What is Mark Selby's phone number?
- The practice phone number listed in the NPPES registry for Mark Selby is (413) 499-2672.
- Does Mark Selby accept Medicare?
- Mark Selby is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Mark Selby's NPI active?
- Yes — Mark Selby's NPI (1265476782) is active in the NPPES registry as of the last update on 2007-07-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.