NPPES file of Aug 9, 2026

Leigh Ellen Vantimmeren, PA

Physician Assistant · Grand Rapids, MI

Leigh Ellen Vantimmeren, PA is a physician assistant with a practice address in Grand Rapids, Michigan, and NPI 1346603933, issued on Mar 31, 2016. Check the license (Michigan 5601010247, 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
1346603933
Name
Leigh Ellen Vantimmeren
Credential
PA
Primary taxonomy
Physician Assistant 363A00000X
License number
5601010247 MI
Self-reported in NPPES; status is on the state search
Practice location
275 Michigan St NE, Grand Rapids, MI 49503
Phone
(616) 267-8700
Enumerated
Mar 31, 2016
Record last updated
Jan 27, 2025
Fax
(616) 267-8247
Medicare enrollment
Enrolled (PECOS I20210128000424); accepts Medicare assignment
Medical or professional school
Rush Medical College Of Rush University, 2016
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 275 Michigan St NE

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

  1. Shan Abbas, M.D.Epilepsy Physician1730362674
  2. Esam Abobaker, DONeurology Physician1225770639
  3. Asad Ahrar, MDVascular Neurology Physician1861919722
  4. Shruti Anand, MDGeriatric Medicine (Internal Medicine) Physician1063908416
  5. Mara Arnett, PA-CPhysician Assistant1841692001
  6. Charles Asbury, D.O.Epilepsy Physician1114378692

Verify Leigh Ellen Vantimmeren 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 5601010247
    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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97% fewer Medicare Part D claims than the average physician assistant in 2024

25 Medicare Part D claims for 16 beneficiaries, against an average of 830 among the 101,058 providers of this specialty who prescribed in Part D.

  1. Leigh Vantimmeren25
  2. Specialty average830

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).

Leigh Ellen Vantimmeren among 6,989 physician assistant records in Michigan

Leigh Ellen Vantimmeren, PA 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 2016, is newer than 48% of them.

  • NPI issued2016 · 48% of these records are older, 48% newer
  • In a Medicare fileYes · 82% of these records are
  • In the CMS Doctors and Clinicians fileYes · 68% of these records are
  • Graduated2016 · median 2017 among the 4,739 with a school on file
  • Record last updated2025 · 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).

913 physician assistant records list a practice address in Grand Rapids

They are 913 of the 18,005 NPPES records with a practice address in Grand Rapids, and 6,989 physician assistant records in Michigan.

The 8 physician assistant records with the nearest ZIP codes

  1. Lisa Berger, P.A.Grand Rapids, MI 495031497729172
  2. Barbara Blakely, PA-CGrand Rapids, MI 495031649255563
  3. Sarah Bleyenberg, PA-CGrand Rapids, MI 495031174504088
  4. Laura Bolenz-Geesin, PA-CGrand Rapids, MI 495031811982283
  5. Joel Heagle, PA-CGrand Rapids, MI 495031962497990
  6. John Hendricks, PA-CGrand Rapids, MI 495031992705610
  7. Carrie Jerow, MPAS, PA-CGrand Rapids, MI 495031033190285
  8. Jacqueline Johanson, P.A.-CGrand Rapids, MI 495031952304982

Common questions

What is Leigh Ellen Vantimmeren, PA's NPI number?

Leigh Ellen Vantimmeren, PA's National Provider Identifier (NPI) is 1346603933, issued on Mar 31, 2016. An NPI identifies a provider in billing; it is not a license.

Where is Leigh Ellen Vantimmeren, PA located?

The NPPES record lists a practice address at 275 Michigan St NE, Grand Rapids, MI, 49503. Phone: (616) 267-8700. Providers update this record themselves, so call before visiting.

How can I verify Leigh Ellen Vantimmeren, PA's license?

NPPES lists Michigan license number 5601010247, as entered by the provider. Search the Michigan board that licenses this profession; the NPPES record confirms identity only.

How much does Leigh Ellen Vantimmeren, PA prescribe under Medicare Part D?

In 2024, Leigh Ellen Vantimmeren, PA had 25 Medicare Part D claims for 16 beneficiaries; the average among physician assistant prescribers was 830. Part D covers Medicare prescriptions only.

What is Leigh Ellen Vantimmeren, PA'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.