Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Katherine Mary Tobin, M.D.

Diagnostic Radiology Physician in Portsmouth, NH · enumerated 2005.

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

National Provider Identifier

1316922057

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Registry record

Entity type Individual (Type 1)

Name Katherine Mary Tobin

Credential M.D.

Sex Female

Practice address 579 Sagamore Ave, Unit 60, Portsmouth, NH, 03801

Phone (952) 595-1100

Fax (612) 294-4903

Enumeration date Dec 14, 2005

Last updated in NPPES Sep 20, 2016

Taxonomy & licenses

2085R0202X Diagnostic Radiology Physician Allopathic & Osteopathic Physicians · License MD00045643 (WA) Secondary

2085R0202X Diagnostic Radiology Physician Allopathic & Osteopathic Physicians · License 12977 (NH) Primary

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

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

Where does Katherine Tobin practice?

The practice location on file with NPPES is in Portsmouth, NH. Providers can have multiple locations; NPPES lists the primary practice address.

What is the NPI number for Katherine Tobin?

The National Provider Identifier (NPI) for Katherine Tobin is 1316922057, a Type 1 (individual) record in the CMS NPPES registry.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2016-09-20.