NPI Portal NPI Lookup & Verification

Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Mark Buettner, PA-C

Physician Assistant in Lima, OH · enumerated 2005.

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

National Provider Identifier

1821087826

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)
Name Mark Buettner
Credential PA-C
Sex Male
Practice address 730 W Market St, 2k Tower, Lima, OH, 45801
Fax (419) 996-5854
Enumeration date Oct 21, 2005
Last updated in NPPES May 10, 2017

Taxonomy & licenses

363AS0400X Surgical Physician Assistant Physician Assistants & Advanced Practice Nursing Providers · License 50001182 (OH) Secondary
363A00000X Physician Assistant Physician Assistants & Advanced Practice Nursing Providers · License 50.001182 (OH) Primary

Other identifiers

Identifier Type State Issuer
0076227 Medicaid OH -

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 Mark Buettner's NPI record?
Cross-check NPI 1821087826 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.
Is NPI 1821087826 active?
Yes, as of the latest NPPES snapshot, NPI 1821087826 is active (record last updated 2017-05-10).

Other providers at this practice address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2017-05-10.