Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Christopher Mahr, MD

Family Medicine Physician in Sumter, SC · enumerated 2005 · practices at Colonial Family Practice, LLC.

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

National Provider Identifier

1801880190

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Registry record

Entity type Individual (Type 1)

Name Dr. Christopher Mahr

Credential MD

Sex Male

Practice address 698 Bultman Dr, Suite A, Sumter, SC, 29150

Phone (803) 773-5227

Fax (803) 753-9312

Enumeration date Sep 1, 2005

Last updated in NPPES Feb 12, 2026

Taxonomy & licenses

207Q00000X Family Medicine Physician Allopathic & Osteopathic Physicians · License 28038 (SC) 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
P00474996	Other	SC	RR MEDICARE PIN
372048	Medicaid	SC	-
7477	Other	SC	MEDICARE ID

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

How do I verify Christopher Mahr's NPI record?

Cross-check NPI 1801880190 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1801880190 active?

Yes, as of the latest NPPES snapshot, NPI 1801880190 is active (record last updated 2026-02-12).

Other providers at this practice address

Browse all →

Colonial Family Practice, LLC Family Medicine Physician · Sumter, SC NPI 1497178131 Tammy Martin Attendant Care Provider · Sumter, SC NPI 1598329856

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2026-02-12.