Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. William D. Kessler Jr., M.D.

Hospitalist Physician in Joplin, MO · enumerated 2005.

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

National Provider Identifier

1265421739

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Registry record

Entity type Individual (Type 1)

Name Dr. William D. Kessler Jr.

Credential M.D.

Sex Male

Practice address 100 Mercy Way, Joplin, MO, 64804

Phone (417) 781-2727

Fax (417) 208-3625

Enumeration date Oct 18, 2005

Last updated in NPPES Apr 15, 2016

Taxonomy & licenses

207Q00000X Family Medicine Physician Allopathic & Osteopathic Physicians · License R7G11 (MO) Secondary

208M00000X Hospitalist Physician Allopathic & Osteopathic Physicians · License R7G11 (MO) 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
202443404	Medicaid	MO	-

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.

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Frequently asked questions

Is NPI 1265421739 active?

Yes, as of the latest NPPES snapshot, NPI 1265421739 is active (record last updated 2016-04-15).

How do I verify William Kessler's NPI record?

Cross-check NPI 1265421739 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Other providers at this practice address

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Ajit Nagra Anesthesiology Physician · Joplin, MO NPI 1659378693 Timothy O'Keefe Hospitalist Physician · Joplin, MO NPI 1730178336 Ricky Brown Certified Registered Nurse Anesthetist · Joplin, MO NPI 1689655649 John Coleman Emergency Medicine Physician · Joplin, MO NPI 1861475279 Susan Pintado Anatomic Pathology & Clinical Pathology Physician · Joplin, MO NPI 1770567380 Nathan Buerge Certified Registered Nurse Anesthetist · Joplin, MO NPI 1184603391 Kalaichelvi Huff Anesthesiology Physician · Joplin, MO NPI 1205808680 Irving Lafrancis Hematology & Oncology Physician · Joplin, MO NPI 1750358487

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2016-04-15.