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

Mary Louise Susan Decker, MD

Infectious Disease Physician in Scranton, PA · enumerated 2006.

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

National Provider Identifier

1598714891

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)

Name Mary Louise Susan Decker

Credential MD

Sex Female

Practice address Scranton, PA, 18505

Phone (570) 941-0630

Enumeration date May 6, 2006

Last updated in NPPES Dec 11, 2020

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

Taxonomy & licenses

207RI0200X Infectious Disease Physician Allopathic & Osteopathic Physicians · License MD065216L (PA) 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
101303	Other	PA	UNISON HEALTH PLAN
276915	Other	PA	HIGHMARK BLUE SHIELD
0016925830001	Medicaid	PA	-
24497	Other	PA	GEISINGER HEALTH PLAN
806176	Other	PA	FIRST PRIORITY HEALTH

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 Mary Louise Decker practice?

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

What is the NPI number for Mary Louise Decker?

The National Provider Identifier (NPI) for Mary Louise Decker is 1598714891, a Type 1 (individual) record in the CMS NPPES registry.

Other providers at this practice address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2020-12-11.