Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Ashley Susan Tiemeyer Theisen, PA-C
Physician Assistant in Holland, MI · enumerated 2020.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1770103210
See something wrong? Report a correction
Registry record
Entity type Individual (Type 1)
Name Ashley Susan Tiemeyer Theisen
Credential PA-C
Sex Female
Practice address 602 Michigan Ave Ste 102, Holland, MI, 49423
Phone (616) 494-8724
Enumeration date Apr 24, 2020
Last updated in NPPES Aug 26, 2024
Taxonomy & licenses
363A00000X Physician Assistant Physician Assistants & Advanced Practice Nursing Providers · License 5601009787 (MI) Primary
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.
Frequently asked questions
What is the NPI number for Ashley Tiemeyer Theisen?
The National Provider Identifier (NPI) for Ashley Tiemeyer Theisen is 1770103210, a Type 1 (individual) record in the CMS NPPES registry.
Where does Ashley Tiemeyer Theisen practice?
The practice location on file with NPPES is in Holland, MI. Providers can have multiple locations; NPPES lists the primary practice address.
Other providers at this practice address
Browse all → Marcel Letourneau Cardiovascular Disease Physician · Holland, MI NPI 1013355007 Keith Frank Cardiovascular Disease Physician · Holland, MI NPI 1609217165 Rajus Chopra Cardiovascular Disease Physician · Holland, MI NPI 1649632720 Melissa Eisenhauer Physician Assistant · Holland, MI NPI 1295391217 Eric Dejong Gerontology Nurse Practitioner · Holland, MI NPI 1629619903
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2024-08-26.