Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Mary L Callison, M.D.

Family Medicine Physician in Sanford, ME · enumerated 2006.

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

National Provider Identifier

1285790030

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Registry record

Entity type Individual (Type 1)

Name Mary L Callison

Credential M.D.

Sex Female

Practice address 10 Goodall Drive, Sanford, ME, 04073

Phone (207) 490-7790

Enumeration date Dec 28, 2006

Last updated in NPPES Apr 16, 2014

Taxonomy & licenses

207Q00000X Family Medicine Physician Allopathic & Osteopathic Physicians · License MD18602 (ME) Primary

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
435883199	Medicaid	ME	-

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

What is the NPI number for Mary Callison?

The National Provider Identifier (NPI) for Mary Callison is 1285790030, a Type 1 (individual) record in the CMS NPPES registry.

Where does Mary Callison practice?

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

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2014-04-16.