Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

Lancaster Internal Medicine Group

Nephrology Physician in Lancaster, PA · enumerated 2006 · authorized official Susan Ressler, Office Manager.

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

National Provider Identifier

1902868466

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Registry record

Entity type Organization (Type 2)

Legal business name Lancaster Internal Medicine Group

Practice address 817 N Cherry St, Lancaster, PA, 17602

Phone (717) 393-8131

Fax (717) 393-9107

Enumeration date Apr 3, 2006

Last updated in NPPES Sep 11, 2025

Taxonomy & classification

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians Secondary

207RN0300X Nephrology Physician Allopathic & Osteopathic Physicians Primary

Authorized official

Name Susan Ressler

Title Office Manager

Phone (717) 393-8131

Other identifiers

Identifier	Type	State	Issuer
1007432410004	Medicaid	PA	-

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 a Type 2 NPI?

A Type 2 NPI identifies an organization (group practice, hospital, pharmacy, lab), while Type 1 NPIs identify individual providers. Organizations bill under their Type 2 NPI.

What type of organization is Lancaster Internal Medicine Group?

Lancaster Internal Medicine Group is registered in NPPES as a Nephrology Physician (its primary provider taxonomy).

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2025-09-11.