Gretchen Leffler, PAC
Physician Assistant · Kalamazoo, MI
Gretchen Leffler, PAC is a physician assistant with a practice address in Kalamazoo, Michigan, and NPI 1255457677, issued on Mar 21, 2007. Check the license (Michigan 5601004107, as entered in NPPES) with the Michigan board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Gretchen Leffler
- Credential
- PAC
- Primary taxonomy
- Physician Assistant 363A00000X
- License number
- 5601004107 MI
Self-reported in NPPES; status is on the state search - Practice location
- 5629 Stadium Drive, Kalamazoo, MI 49009
- Phone
- (269) 372-5701
- Enumerated
- Mar 21, 2007
- Record last updated
- Nov 27, 2023
- Fax
- (269) 372-5702
- Medicaid ID
- 1255457677 MI
- Medicare enrollment
- Enrolled (PECOS I20070919000383); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest physician assistant records → All 6,989 in Michigan → Look up another NPI →
Verify Gretchen Leffler in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Michigan board licenses this profession
Search for license 5601004107Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
5.7 times the Medicare Part D claims of the average physician assistant in 2024
4,769 Medicare Part D claims for 343 beneficiaries, against an average of 830 among the 101,058 providers of this specialty who prescribed in Part D. Brand-name drugs were 13% of claims. 265 claims were for opioids.
Most prescribed
- Levothyroxine Sodium306 claims
- Atorvastatin Calcium275 claims
- Hydrocodone-Acetaminophen178 claims
- Omeprazole160 claims
- Amlodipine Besylate156 claims
- Metoprolol Succinate150 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.
Industry payments in 2024: $494.22
22 payments; by number, the most common kind was food and beverage; the largest payer was Novo Nordisk Inc. The 64,719 providers of this specialty with any payment received $841.65 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
One hospital affiliation
- Bronson Methodist HospitalKalamazoo, MI · Acute Care Hospitals4 of 5 stars
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through); hospitals matched to CMS Hospital General Information (Care Compare) (data.cms.gov). Star ratings are CMS hospital ratings, not ratings of this provider.
Gretchen Leffler among 6,989 physician assistant records in Michigan
Gretchen Leffler, PAC 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 2007, is newer than 17% of them.
- NPI issued2007 · 17% of these records are older, 76% newer
- In a Medicare fileYes · 82% of these records are
- In the CMS Doctors and Clinicians fileYes · 68% of these records are
- Graduated2003 · median 2017 among the 4,739 with a school on file
- Record last updated2023 · 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).
173 physician assistant records list a practice address in Kalamazoo
They are 173 of the 6,553 NPPES records with a practice address in Kalamazoo, and 6,989 physician assistant records in Michigan.
All 6,989 in Michigan → Every provider in Kalamazoo → Physician Assistant nationwide →
The 8 physician assistant records with the nearest ZIP codes
- Lindsay Allen, PA-CKalamazoo, MI 490091407105349
- Aaron Bacalia, PA-CKalamazoo, MI 490091790876894
- Christopher Beamish, P.A.Kalamazoo, MI 490091083722839
- Julie Bowser, PA-CKalamazoo, MI 490091629187810
- Cynthia Cretsinger, PA-CKalamazoo, MI 490091386799849
- Ronald Doan, PAKalamazoo, MI 490091710062864
- Troy Green, PACKalamazoo, MI 490091184604530
- Nicholas LapennaKalamazoo, MI 490091013196534
Common questions
What is Gretchen Leffler, PAC's NPI number?
Gretchen Leffler, PAC's National Provider Identifier (NPI) is 1255457677, issued on Mar 21, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Gretchen Leffler, PAC located?
The NPPES record lists a practice address at 5629 Stadium Drive, Kalamazoo, MI, 49009. Phone: (269) 372-5701. Providers update this record themselves, so call before visiting.
How can I verify Gretchen Leffler, PAC's license?
NPPES lists Michigan license number 5601004107, as entered by the provider. Search the Michigan board that licenses this profession; the NPPES record confirms identity only.
How much does Gretchen Leffler, PAC prescribe under Medicare Part D?
In 2024, Gretchen Leffler, PAC had 4,769 Medicare Part D claims for 343 beneficiaries; the average among physician assistant prescribers was 830. Part D covers Medicare prescriptions only.
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.