Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Carolyn S Tolley, M.D.

Acupuncturist in Holyoke, MA · enumerated 2006 · practices at Diabetes Center of Western Mass, Inc.

Data current as of Jul 13, 2026 · sourced from CMS NPPES

National Provider Identifier

1669439949

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Registry record

Entity type Individual (Type 1)

Name Dr. Carolyn S Tolley

Credential M.D.

Sex Female

Practice address 1850 Northampton St, Holyoke, MA, 01040

Phone (413) 536-3800

Fax (413) 536-3830

Enumeration date Apr 28, 2006

Last updated in NPPES Sep 11, 2025

Taxonomy & licenses

171100000X Acupuncturist Other Service Providers Primary

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License 150324 (MA) Secondary

MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD credential

Other identifiers

Identifier	Type	State	Issuer
000000007943	Other	MD	HEALTHNET
0101500324MA01	Other	CT	ANTHEM BCBS
750037	Other	MA	CONNECTICARE
17141	Other	MA	HEALTH NEW ENGLAND
J16425	Other	MA	BCBS
1013150	Other	MA	CIGNA
1859609	Medicaid	MA	-
150324	Other	MA	TUFTS HEALTH PLAN
63270	Other	MA	HARVARD PILGRIM

What is an NPI number?

A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes, even if the provider moves or changes specialty.

Read the full guide → Validate an NPI →

Frequently asked questions

Is NPI 1669439949 active?

Yes, as of the latest NPPES snapshot, NPI 1669439949 is active (record last updated 2025-09-11).

How do I verify Carolyn Tolley's NPI record?

Cross-check NPI 1669439949 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Other providers at this practice address

Browse all →

Paula Santiago-Kelley Diabetes Educator Registered Nurse · Holyoke, MA NPI 1972770493 Diabetes Center of Western Mass, Inc Multi-Specialty Clinic/Center · Holyoke, MA NPI 1164699450 Celeste Rosselli Registered Dietitian · Holyoke, MA NPI 1851606289

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2025-09-11.