Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum Sole proprietor

Ruth Allison Ryan, MD

Neurology Physician in Northampton, MA · enumerated 2006.

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

National Provider Identifier

1205804085

Verified

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Registry record

Entity type Individual (Type 1)

Name Ruth Allison Ryan

Credential MD

Sex Female

Practice address Northampton, MA, 01060

Phone (413) 586-2230

Fax (413) 586-3379

Enumeration date Mar 9, 2006

Last updated in NPPES Jun 5, 2008

Street address withheld: NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

2084N0400X Neurology Physician Allopathic & Osteopathic Physicians · License 52145 (MA) Primary

2084N0600X Clinical Neurophysiology Physician Allopathic & Osteopathic Physicians · License 52145 (MA) Secondary

2084P2900X Pain Medicine (Psychiatry & Neurology) Physician Allopathic & Osteopathic Physicians · License 52145 (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
6674	Other	MA	BMC
16106	Other	MA	HEALTH NEW ENGLAND
2486136	Other	MA	AETNA
J02814	Other	MA	BCBSMA
6156801	Other	MA	CIGNA
521451	Other	MA	CONNECTICARE
6178472	Medicaid	MA	-
AA46666	Other	MA	HARVARD PILGRIM
756081	Other	MA	TUFTS

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 1205804085 active?

Yes, as of the latest NPPES snapshot, NPI 1205804085 is active (record last updated 2008-06-05).

How do I verify Ruth Ryan's NPI record?

Cross-check NPI 1205804085 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2008-06-05.