1. Home
  2. Directory
  3. Massachusetts
  4. Northampton
  5. Nurse Practitioner
  6. NPI Profile

MAUREEN L CALLAHAN NP
NPI 1497633036
Nurse Practitioner - Family in Northampton, MA

Active since August 22, 2025PECOS EnrolledAccepts Medicare Assignment
325B KING ST, NORTHAMPTON, MA 01060(413) 794-2273(413) 387-4136 Get Directions Write a Review

NPPES record last updated: May 28, 2026. Verified against the NPPES registry weekly; last sync: October 25, 2026.

About Maureen L Callahan Np NPPES

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

MAUREEN L CALLAHAN NP (NPI 1497633036) is an individual family provider in Northampton, Massachusetts, licensed in Massachusetts (RN2266823) and active in the NPI registry since August 2025. She is enrolled in Medicare PECOS, is affiliated with Baystate Franklin Medical Center, and is a graduate of Other (2025).

NPPES Registry Identity

NPI1497633036
Entity TypeIndividualFemale
Primary Taxonomy363LF0000X
Provider Legal NameMAUREEN L CALLAHANCredential: NP
Location Address325B KING STNorthampton, MA 01060-2370
Mailing Address280 Chestnut St Fl 2Springfield, MA 01199-1001 · (413) 794-5700
Phone(413) 794-2273
Fax(413) 387-4136
Sole ProprietorNo
Medical School CMSOtherGraduated 2025
Enumeration DateAugust 22, 2025
Last NPPES UpdateMay 28, 2026
NPPES CertifiedMay 28, 2026
✔ NPI 1497633036 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyNurse Practitioner · FamilyPhysician Assistants & Advanced Practice Nursing Providers
Taxonomy Code363LF0000X
License✔ Licensed in MA · RN2266823
325B KING ST, Northampton, MA 01060
Open in Google Maps ↗

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Maureen L Callahan Np is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID9638644909
PECOS Enrollment IDI20260406001123
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.

Medicare Billing Reassignment

Medicare enrollment records show Maureen Callahan reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Baystate Medical Practices, Inc
15 mi
Emergency Medical Services
759 CHESTNUT ST
Springfield, MA 01199
  • Reassigned Medicare billing, Massachusetts enrollment
  • 1,537 clinicians in this Medicare group
NPI 1548205909 (413) 794-5700

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Hospital Affiliations CMS Care Compare 2

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

Baystate Franklin Medical Center

Acute Care Hospitals · Greenfield, MA
4/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number220016
Location164 High StreetGreenfield, MA 01301 · Franklin County
Emergency services Birthing friendly

Baystate Medical Center

Acute Care Hospitals · Springfield, MA
1/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number220077
Location759 Chestnut StreetSpringfield, MA 01199 · Hampden County
Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 01060 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
$90.70 typical visit price
range $58.86 – $177.36
Typical copayment $22.67 (range $14.71 – $44.34)
Most-billed visit code 99203
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 20

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

GLENDA B FLYNN NP
Nurse Practitioner (Family)
325B KING ST
NORTHAMPTON, MA 01060
Hampshire County (413) 387-4100
NANCY LOGAN P.A.
Physician Assistant (Medical)
325B KING ST
NORTHAMPTON, MA 01060
Hampshire County (413) 584-1588
KYLE A. COOPER MD
Internal Medicine (Cardiovascular Disease)
325B KING ST
NORTHAMPTON, MA 01060
Hampshire County (413) 794-2273
STEVEN W DIPILLO MD
Internal Medicine (Cardiovascular Disease)
325B KING ST
NORTHAMPTON, MA 01060
Hampshire County (413) 584-1588
KATELYN C. DUTKIEWICZ PA
Physician Assistant
325B KING ST
NORTHAMPTON, MA 01060
Hampshire County (413) 387-4100
MS. KATHLEEN L GRANDISON MD
Family Medicine
325B KING ST
NORTHAMPTON, MA 01060
Hampshire County (413) 625-9717
LEAH CULLER MORRISON NP
Nurse Practitioner (Family)
325B KING ST
NORTHAMPTON, MA 01060
Hampshire County (413) 387-4100
ANN COOPER D.O.
Emergency Medicine
325B KING ST, #3
NORTHAMPTON, MA 01060
Hampshire County (413) 387-4101

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 Maureen Callahan's NPI number?

The NPI number for Maureen Callahan is 1497633036. It was assigned to this individual provider in the NPPES registry on August 22, 2025.

Where is Maureen Callahan located?

Maureen Callahan practices at 325B King St, Northampton, MA 01060. The listed phone number is (413) 794-2273.

What is Maureen Callahan's specialty?

The primary specialty registered for this NPI is Nurse Practitioner, specializing in Family, with taxonomy code 363LF0000X.

Is Maureen Callahan enrolled in Medicare?

Yes. Maureen Callahan is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

Which organization bills Medicare for Maureen Callahan's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Maureen Callahan reassigns Medicare benefits to Baystate Medical Practices, Inc (Springfield, MA). The reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Maureen Callahan's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

Is Maureen Callahan affiliated with any hospitals?

According to CMS data, Maureen Callahan is affiliated with Baystate Franklin Medical Center and Baystate Medical Center.

When was this NPI record last updated?

The NPPES record for Maureen Callahan was last updated on May 28, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.