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KATHERINE WILLIAMS DUHAMEL PA-C
NPI 1497261168
Physician Assistant in Cambridge, MA

Active since December 18, 2017PECOS Enrolled
1493 CAMBRIDGE ST, CAMBRIDGE, MA 02139(617) 665-1000 Get Directions Write a Review

NPPES record last updated: December 3, 2025. Verified against the NPPES registry weekly; last sync: September 27, 2026.

Record update history: Dec 3, 2025, Aug 13, 2025, Jan 4, 2019 and 1 more (4 updates tracked since 2017).

About Katherine Williams Duhamel Pa-c NPPES

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

KATHERINE WILLIAMS DUHAMEL PA-C (NPI 1497261168) is an individual physician assistant in Cambridge, Massachusetts, licensed in Massachusetts (PA6492) and active in the NPI registry since December 2017. She is enrolled in Medicare PECOS and maintains 2 additional practice locations.

NPPES Registry Identity

NPI1497261168
Entity TypeIndividualFemale
Primary Taxonomy363A00000X
Provider Legal NameKATHERINE WILLIAMS DUHAMELCredential: PA-C
Location Address1493 CAMBRIDGE STCambridge, MA 02139-1047
Mailing AddressCambridge Hospital, 1493 Cambridge StreetCambridge, MA 02139 · (617) 498-1660
Phone(617) 665-1000
Sole ProprietorNo
Enumeration DateDecember 18, 2017
Last NPPES UpdateDecember 3, 20254 updates tracked since enumeration
NPPES CertifiedDecember 3, 2025
✔ NPI 1497261168 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPhysician AssistantPhysician Assistants & Advanced Practice Nursing Providers
Taxonomy Code363A00000X
License✔ Licensed in MA · PA6492
Definition
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.
1493 CAMBRIDGE ST, Cambridge, MA 02139
Open in Google Maps ↗

Secondary Practice Locations 2

Location 114 Prospect StMilford, MA 01757-3003 · Phone (508) 482-5405
Location 2136 Harrison Ave Ste 207Boston, MA 02111-1817 · Phone (617) 636-0405

Other Identifiers 1

Medicaid110029050AMA

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Katherine Williams Duhamel Pa-c 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 02139 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
$97.64 typical visit price
range $63.72 – $189.86
Typical copayment $24.41 (range $15.93 – $47.46)
Most-billed visit code 99203
Established Patient
$78.84 typical visit price
range $21.07 – $155.29
Typical copayment $19.71 (range $5.26 – $38.82)
Most-billed visit code 99213
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.

ELIZABETH BLACK-SUCHY CCC-SLP
Speech-Language Pathologist
1493 CAMBRIDGE ST
CAMBRIDGE, MA 02139
Middlesex County (617) 591-6767
ZACHARY OLIFF DO
Emergency Medicine
1493 CAMBRIDGE ST
CAMBRIDGE, MA 02139
Middlesex County (617) 665-1000
JACOB DYLAN WOLFE LICSW
Social Worker (Clinical)
1493 CAMBRIDGE ST
CAMBRIDGE, MA 02139
Middlesex County (617) 665-1646
SARAH-JO SANTILLI RN
Registered Nurse
1493 CAMBRIDGE ST
CAMBRIDGE, MA 02139
Middlesex County (617) 272-6455
JULIE LYNNE MERCER
Registered Nurse
1493 CAMBRIDGE ST
CAMBRIDGE, MA 02139
Middlesex County (617) 591-4212
TAIANA KATSARAS LICSW
Social Worker (Clinical)
1493 CAMBRIDGE ST
CAMBRIDGE, MA 02139
Middlesex County (617) 665-1185
ANGELA DE SILVA
Registered Nurse (Ambulatory Care)
1493 CAMBRIDGE ST
CAMBRIDGE, MA 02139
Middlesex County (617) 665-1000
RORY HAUSER
Registered Nurse (Neonatal, Low-Risk)
1493 CAMBRIDGE ST
CAMBRIDGE, MA 02139
Middlesex County (802) 595-9868

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 Katherine Duhamel's NPI number?

The NPI number for Katherine Duhamel is 1497261168. It was assigned to this individual provider in the NPPES registry on December 18, 2017.

Where is Katherine Duhamel located?

Katherine Duhamel practices at 1493 Cambridge St, Cambridge, MA 02139. The listed phone number is (617) 665-1000.

What is Katherine Duhamel's specialty?

The primary specialty registered for this NPI is Physician Assistant with taxonomy code 363A00000X.

Is Katherine Duhamel enrolled in Medicare?

Yes. Katherine Duhamel is registered in the Medicare PECOS enrollment system.

When was this NPI record last updated?

The NPPES record for Katherine Duhamel was last updated on December 3, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 10 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.