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

ALAN J. CALHOUN MD
NPI 1740259993
Internal Medicine in Amherst, MA

Active since March 17, 2006
150 INFIRMARY WAY, AMHERST, MA 01003(413) 577-5000(413) 577-5440 Get Directions Write a Review

NPPES record last updated: July 13, 2026. Verified against the NPPES registry weekly; last sync: July 19, 2026.

About Alan J. Calhoun Md NPPES

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

ALAN J. CALHOUN MD (NPI 1740259993) is an individual internal medicine provider in Amherst, Massachusetts, licensed in Massachusetts (42663) and active in the NPI registry since March 2006.

NPPES Registry Identity

NPI1740259993
Entity TypeIndividualMale
Primary Taxonomy207R00000X
Provider Legal NameALAN J. CALHOUNCredential: MD
Location Address150 INFIRMARY WAYAmherst, MA 01003-9288
Mailing Address150 Infirmary WayAmherst, MA 01003-9288 · (413) 577-5000 · Fax (413) 577-5440
Fax(413) 577-5440
Sole ProprietorNo
Enumeration DateMarch 17, 2006
Last NPPES UpdateJuly 13, 2026
NPI 1740259993 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 · 42663
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.

150 INFIRMARY WAY, Amherst, MA 01003

Other Identifiers 8

Other042663MA · Tufts
Other699995MA · Harvard Pilgrim
OtherI01019MA · Bcbsma
Other1130362MA · Aetna
Other187691MA · Healthsource
Other24832MA · Health New England
Other426631MA · Connecticare
Other1027468001MA · Cigna

Other Providers at the Same Location NPPES 19

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

Family Medicine
150 INFIRMARY WAY
AMHERST, MA 01003
Nurse Practitioner
150 INFIRMARY WAY
AMHERST, MA 01003
Pediatrics
150 INFIRMARY WAY, UHS
AMHERST, MA 01003
Nurse Practitioner
150 INFIRMARY WAY, UNIVERSITY HEALTH SERVICES
AMHERST, MA 01003
Nurse Practitioner
150 INFIRMARY WAY, UNIVERSITY HEALTH SERVICES
AMHERST, MA 01003
Physician Assistant
150 INFIRMARY WAY, UNIVERSITY HEALTH SERVICES
AMHERST, MA 01003
Nurse Practitioner
150 INFIRMARY WAY, UNIVERSITY HEALTH SERVICES
AMHERST, MA 01003
Nurse Practitioner
150 INFIRMARY WAY, UNIVERSITY HEALTH SERVICES
AMHERST, MA 01003

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1740259993, enumerated as an "individual" on March 17, 2006.

The provider is located at 150 INFIRMARY WAY AMHERST, MA 01003 and the phone number is (413) 577-5000.

Internal Medicine with taxonomy code 207R00000X.

The provider might be accepting Accepts: Tufts Health Plan, Medicare, Medicaid, Blue Cross. Please consult your insurance carrier or call the provider to verify.