Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Michael G Marenchic, MD

Emergency Medicine Physician in Lancaster, PA · enumerated 2006.

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

National Provider Identifier

1720018732

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Registry record

Entity type Individual (Type 1)

Name Michael G Marenchic

Credential MD

Sex Male

Practice address 35 Wilson Dr, Lancaster, PA, 17603

Phone (858) 864-7777

Enumeration date Jul 4, 2006

Last updated in NPPES Jun 23, 2016

Taxonomy & licenses

207P00000X Emergency Medicine Physician Allopathic & Osteopathic Physicians · License G33236 (CA) Primary

207P00000X Emergency Medicine Physician Allopathic & Osteopathic Physicians · License 65796 (WI) 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
00G332360	Medicaid	CA	-

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 Michael Marenchic?

The National Provider Identifier (NPI) for Michael Marenchic is 1720018732, a Type 1 (individual) record in the CMS NPPES registry.

Where does Michael Marenchic practice?

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

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2016-06-23.