Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 30 days.

DR. MARK R. SELBY D.O.
NPI 1265476782
Internal Medicine in Pittsfield, MA

Active since June 15, 2006PECOS Enrolled
73 EAGLE ST, PITTSFIELD, MA 01201(413) 499-2672(413) 447-8825 Get Directions Write a Review

NPPES record last updated: July 13, 2026. Verified against the NPPES registry weekly; last sync: July 26, 2026.

About Dr. Mark R. Selby D.o. NPPES

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

DR. MARK R. SELBY D.O. (NPI 1265476782) is an individual internal medicine provider in Pittsfield, Massachusetts, licensed in Massachusetts (MA43107) and active in the NPI registry since June 2006. He is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1265476782
Entity TypeIndividualMale
Primary Taxonomy207R00000X
Provider Legal NameDR. MARK R. SELBYCredential: D.O.
Location Address73 EAGLE STPittsfield, MA 01201-4714
Mailing AddressPo Box 1007Ashfield, MA 01330-1007 · (413) 499-2672 · Fax (413) 447-8825
Fax(413) 447-8825
Sole ProprietorNo
Enumeration DateJune 15, 2006
Last NPPES UpdateJuly 13, 2026
NPI 1265476782 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207R00000X
License Licensed in MA · MA43107
Definition
A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.
73 EAGLE ST, Pittsfield, MA 01201

Other Identifiers 1

Other2464892MA · Id#

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

Enrolled in Medicare (PECOS)

Dr. Mark R. Selby D.o. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

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.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 01201 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$134.47 typical visit price
range $58.86 – $177.36
Typical copayment $33.61 (range $14.71 – $44.34)
Most-billed visit code 99204
Established Patient
$103.48 typical visit price
range $19.11 – $144.84
Typical copayment $25.87 (range $4.77 – $36.21)
Most-billed visit code 99214
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Other Providers at the Same Location NPPES

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

Social Worker (Clinical)
73 EAGLE ST
PITTSFIELD, MA 01201

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 Selby's NPI number?

The NPI number for Mark Selby is 1265476782. It was assigned to this individual provider in the NPPES registry on June 15, 2006.

Where is Mark Selby located?

Mark Selby practices at 73 Eagle St, Pittsfield, MA 01201. The listed phone number is (413) 499-2672.

What is Mark Selby's specialty?

The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.

Is Mark Selby enrolled in Medicare?

Yes. Mark Selby is registered in the Medicare PECOS enrollment system.

When was this NPI record last updated?

The NPPES record for Mark Selby was last updated on July 13, 2026. NPI Profile syncs with the weekly NPPES data releases published by CMS.