Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Mark D Lasswell, CRNA

Certified Registered Nurse Anesthetist in Clinton, MO · enumerated 2005.

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

National Provider Identifier

1639164734

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Registry record

Entity type Individual (Type 1)

Name Mark D Lasswell

Credential CRNA

Sex Male

Practice address 1600 N 2nd St, Clinton, MO, 64735

Phone (660) 885-5511

Enumeration date Sep 14, 2005

Last updated in NPPES Mar 30, 2022

Taxonomy & licenses

367500000X Certified Registered Nurse Anesthetist Physician Assistants & Advanced Practice Nursing Providers · License 115280 (MO) Primary

CRNA · Certified Registered Nurse Anesthetist: An advanced practice nurse specializing in anesthesia care. About the CRNA credential

Other identifiers

Identifier	Type	State	Issuer
20174319965615A002	Other	MO	TRICARE
158890001	Medicaid	AR	-
17703	Other	MO	COX HEALTH
19411	Other	MO	BCBS
916892334	Medicaid	MO	-
P00213245	Other	MO	RAILROAD
100786980A	Medicaid	OK	-
741190	Other	MO	HEALTHLINK

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

What specialty is Mark Lasswell?

Mark Lasswell is registered in NPPES with the primary taxonomy of Certified Registered Nurse Anesthetist. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

Is this the official NPI registry?

No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.

Other providers at this practice address

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Karl Haake Pain Medicine (Anesthesiology) Physician · Clinton, MO NPI 1003801747 Walter Bender Nephrology Physician · Clinton, MO NPI 1205803921 Golden Valley Emergency Physicians, LLC Emergency Medicine Physician · Clinton, MO NPI 1306814306 Daniel Searing Certified Registered Nurse Anesthetist · Clinton, MO NPI 1104886050 Richard Kimmell Emergency Medicine Physician · Clinton, MO NPI 1740242890 Craig Thompson Physical Therapist · Clinton, MO NPI 1841254091 Amy Owen Anatomic Pathology & Clinical Pathology Physician · Clinton, MO NPI 1942237789 Lisa Salazar Physical Therapy Assistant · Clinton, MO NPI 1336164730

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2022-03-30.