NPPES file of Aug 9, 2026

Ashley Susan Tiemeyer Theisen, PA-C

Physician Assistant · Holland, MI

Ashley Susan Tiemeyer Theisen, PA-C is a physician assistant with a practice address in Holland, Michigan, and NPI 1770103210, issued on Apr 24, 2020. Check the license (Michigan 5601009787, as entered in NPPES) with the Michigan board that licenses this profession; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2023 and 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1770103210
Name
Ashley Susan Tiemeyer Theisen
Credential
PA-C
Primary taxonomy
Physician Assistant 363A00000X
License number
5601009787 MI
Self-reported in NPPES; status is on the state search
Practice location
602 Michigan Ave Ste 102, Holland, MI 49423
Phone
(616) 494-8724
Enumerated
Apr 24, 2020
Record last updated
Aug 26, 2024
Medicare enrollment
Enrolled (PECOS I20200811001833); accepts Medicare assignment
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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Also registered at 602 Michigan Ave Ste 102

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Annika BajemaFamily Nurse Practitioner1548124704
  2. Rajus Chopra, M.D.Cardiovascular Disease Physician1649632720
  3. Eric Dejong, AGACNPGerontology Nurse Practitioner1629619903
  4. Anthony Dils, MDCardiovascular Disease Physician1023634532
  5. Melissa Eisenhauer, PAPhysician Assistant1295391217
  6. Keith Frank, D.O.Cardiovascular Disease Physician1609217165

Verify Ashley Susan Tiemeyer Theisen in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich Michigan board licenses this profession
    Search for license 5601009787
    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Find the Michigan license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

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4.1 times the Medicare Part D claims of the average physician assistant in 2024

3,397 Medicare Part D claims for 855 beneficiaries, against an average of 830 among the 101,058 providers of this specialty who prescribed in Part D. Brand-name drugs were 21% of claims.

  1. Ashley Tiemeyer Theisen3,397
  2. Specialty average830

Most prescribed

  1. Metoprolol Succinate462 claims
  2. Eliquis380 claims
  3. Atorvastatin Calcium204 claims
  4. Furosemide198 claims
  5. Amlodipine Besylate173 claims
  6. Rosuvastatin Calcium146 claims

Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.

The MIPS final score for 2023 (Medicare payment program): 100 of 100

The Merit-based Incentive Payment System score is reported for this clinician. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.

  1. Qualityout of 100 · 30% of the final score87.5
  2. Costnot scored (reweighted)
  3. Promoting interoperabilityout of 100 · 25%100.0
  4. Improvement activities40 of 40 points · 15%100.0

Source: CMS Quality Payment Program, MIPS performance year 2023; category weights for 2023 (qpp.cms.gov).

Bills Medicare through one group practice

  1. Spectrum Health Primary Care PartnersGrand Rapids, MI

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

Ashley Susan Tiemeyer Theisen among 6,989 physician assistant records in Michigan

Ashley Susan Tiemeyer Theisen, PA-C is one of 6,989 physician assistant records with a practice address in Michigan. 82% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2020, is newer than 66% of them.

  • NPI issued2020 · 66% of these records are older, 29% newer
  • In a Medicare fileYes · 82% of these records are
  • In the CMS Doctors and Clinicians fileYes · 68% of these records are
  • Graduated2019 · median 2017 among the 4,739 with a school on file
  • Record last updated2024 · 40% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363A00000X and a Michigan practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

59 physician assistant records list a practice address in Holland

They are 59 of the 2,124 NPPES records with a practice address in Holland, and 6,989 physician assistant records in Michigan.

The 8 physician assistant records with the nearest ZIP codes

  1. Farah Berent, PAHolland, MI 494231962602862
  2. Eugene Biegelman, PAHolland, MI 494231255430294
  3. Angela Burch, PA-CHolland, MI 494231124069497
  4. Sara Chargo, PAHolland, MI 494231023474178
  5. Kathryn Kabelman, PA-CHolland, MI 494231063749695
  6. Randall Klein, PAHolland, MI 494231770525743
  7. Carolyn Mossing, PA-CHolland, MI 494231952559288
  8. Jon Penhorwood, PAHolland, MI 494231457772444

Common questions

What is Ashley Susan Tiemeyer Theisen, PA-C's NPI number?

Ashley Susan Tiemeyer Theisen, PA-C's National Provider Identifier (NPI) is 1770103210, issued on Apr 24, 2020. An NPI identifies a provider in billing; it is not a license.

Where is Ashley Susan Tiemeyer Theisen, PA-C located?

The NPPES record lists a practice address at 602 Michigan Ave Ste 102, Holland, MI, 49423. Phone: (616) 494-8724. Providers update this record themselves, so call before visiting.

How can I verify Ashley Susan Tiemeyer Theisen, PA-C's license?

NPPES lists Michigan license number 5601009787, as entered by the provider. Search the Michigan board that licenses this profession; the NPPES record confirms identity only.

How much does Ashley Susan Tiemeyer Theisen, PA-C prescribe under Medicare Part D?

In 2024, Ashley Susan Tiemeyer Theisen, PA-C had 3,397 Medicare Part D claims for 855 beneficiaries; the average among physician assistant prescribers was 830. Part D covers Medicare prescriptions only.

What is Ashley Susan Tiemeyer Theisen, PA-C's MIPS final score?

The 2023 MIPS final score is 100 of 100. The average among 454,083 clinicians with a measured score was 83.5.

Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.

Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.