Independent US Healthcare Provider Directory & Public Medical Database
Active NPI 1528984440 Individual Practitioner Female Practitioner

Chalan Whelan , PA-C

Physician Assistant • Amherst, MA

Professional Overview & Biography Verified Profile Summary

Chalan Whelan, PA-C is a registered healthcare professional specializing in Physician Assistant in Amherst, MA. Practice services are available at 17 RESEARCH DR under active NPI credentials.

Practice Location & Contact Primary Location

Practice Address

17 Research Dr

Amherst, MA 010022788

Telephone 4135498400
Associated Practice Facility / Clinic
🏢 Katherine J. Atkinson, Md, Pc Facility NPI 1568598993

Specialty Benchmarks & Practice Insights

Comparative analytics for Physician Assistant in Amherst, MA

Active Practitioner
Practitioner Clinical Experience
Active
City Avg: 9.5 Yrs
State Avg: 10.0 Yrs
Regional Practice Density
12 Specialists

Practicing in Amherst, MA (4746 Statewide)

Telehealth Adoption Rate
8.3% Regional Adoption

In-Person Office Visits Only

Medicare Pricing Discount
67.4% Avg Savings

Under CMS Medicare Fee Schedule vs Standard Submitted Charges

Medical Specialties & State Licenses

CMS Verified: 2026-06-25
Physician Assistant Primary Specialty

NUCC Taxonomy Code: 363A00000X

A physician assistant is a person who has successfully completed an accredited education program for physician assistant, is licensed by the state and is practicing within the scope of that license. Physician assistants are formally trained to perform many of the routine, time-consuming tasks a physician can do. In some states, they may prescribe medications. They take medical histories, perform physical exams, order lab tests and x-rays, and give inoculations. Most states require that they work under the supervision of a physician.

Practice Associates & Co-Workers

Healthcare professionals and specialists practicing at this location or sharing practice phone/fax

16 Associated Practitioners
NPI 1023682242

Doctor of Chiropractic

Anne Vaillant , PMHNP-BC

Nurse Practitioner - Psychiatric/Mental Health

NPI 1033114632

Psychiatric-Mental Health Nurse Practitioner (Board Certified)

Judith Grupenhoff , MS, MED, NBC-HWC

Counselor - Addiction (Substance Use Disorder)

NPI 1053712752

Master of Science, Master of Education, NBCHWC

Sarah Vacca , PA-C

Physician Assistant

NPI 1164082640

Physician Assistant (Certified)

Paul Krepel , LMFT

Marriage & Family Therapist

NPI 1164571329

Licensed Marriage and Family Therapist

Adam Corriveau

Physician Assistant

NPI 1295441954

Career & Practice History Timeline

Chronological log of verified NPI updates, location relocations, credentials, and registry changes

6 Historical Events
NPI Profile Active June 25, 2026

NPI status registered as active in NPPES database

📍
Updated Practice Location June 25, 2026

Registered at 17 RESEARCH DR, AMHERST, MA 010022788 (Tel: 4135498400)

📍
Updated Business Mailing Address June 25, 2026

Registered at 18 PETZ RD, STAFFORD SPRINGS, CT 060763902 (Tel: 8608495832)

👤
Provider Name / Credentials Updated June 25, 2026

Recorded as CHALAN WHELAN, PA-C

🎓
Medical Taxonomy / Specialty Registered (Primary Specialty) June 25, 2026

Physician Assistant

🟢
Initial NPI Registration & Enumeration June 25, 2026

First registered as active Individual Practitioner in NPPES Database.

Patient & Community Reviews

Verified patient ratings, medical care experiences, and facility photos

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NPI Administrative Meta

NPI Number: 1528984440
Entity Type:
Individual Provider Physician, Nurse Practitioner, or Solo Healthcare Professional (Type 1 NPI)
Enumeration Date: June 25, 2026
Last Update: June 25, 2026
Sole Proprietor: Yes

Mailing Address

18 Petz Rd

Stafford Springs, CT 060763902

Phone: 8608495832

Public Domain Record This profile contains public domain information published by CMS and NPPES under the Freedom of Information Act (FOIA).
⚠️ Medical Disclaimer

This directory listing is for informational purposes only and does not constitute medical advice, diagnosis, or physician endorsement. If you are experiencing a medical emergency, please call 911 immediately.