Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

John B Schweitzer, MD

Neuropathology Physician in Johnson City, TN · enumerated 2007.

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

National Provider Identifier

1609929991

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Registry record

Entity type Individual (Type 1)

Name John B Schweitzer

Credential MD

Sex Male

Practice address Etsu College of Medicine-Dept of Pathology, Bldg 1, Johnson City, TN, 37614

Phone (423) 439-6210

Enumeration date Jan 19, 2007

Last updated in NPPES Sep 11, 2025

Taxonomy & licenses

207ZN0500X Neuropathology Physician Allopathic & Osteopathic Physicians · License 16660 (TN) Primary

207ZP0101X Anatomic Pathology Physician Allopathic & Osteopathic Physicians · License 16660 (TN) 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
MD16660	Other	TN	MEDICAL LICENSE

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

Is NPI 1609929991 active?

Yes, as of the latest NPPES snapshot, NPI 1609929991 is active (record last updated 2025-09-11).

How do I verify John Schweitzer's NPI record?

Cross-check NPI 1609929991 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

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