Diane Marie Willman, PA
Physician Assistant · Lansing, MI
Diane Marie Willman, PA is a physician assistant with a practice address in Lansing, Michigan, and NPI 1821022195, issued on Jul 10, 2006. Check the license (Michigan 5601003309, as entered in NPPES) with the Michigan board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Diane Marie Willman
- Credential
- PA
- Primary taxonomy
- Physician Assistant 363A00000X
- License number
- 5601003309 MI
Self-reported in NPPES; status is on the state search - Practice location
- 401 W Greenlawn Ave, Lansing, MI 48910
- Phone
- (517) 975-9500
- Enumerated
- Jul 10, 2006
- Record last updated
- Jun 8, 2016 (not updated in 10 years: call before relying on the address or phone)
- Fax
- (517) 975-9511
- Medicaid ID
- 1821022195 MI
- Medicare enrollment
- Enrolled (PECOS I20050809000825); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest physician assistant records → All 6,989 in Michigan → Look up another NPI →
Also registered at 401 W Greenlawn Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Daniel Antonoff, DOStudent in an Organized Health Care Education/Training Program1568043552
Verify Diane Marie Willman in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Michigan board licenses this profession
Search for license 5601003309Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
92% fewer Medicare Part D claims than the average physician assistant in 2024
70 Medicare Part D claims for 50 beneficiaries, against an average of 830 among the 101,058 providers of this specialty who prescribed in Part D.
Most prescribed
- Doxycycline Monohydrate13 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.
Bills Medicare through one group practice
- Lansing Urgent Care PLCDewitt, MI
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Diane Marie Willman among 6,989 physician assistant records in Michigan
Diane Marie Willman, 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 2006, is newer than 2% of them.
- NPI issued2006 · 2% of these records are older, 83% newer
- In a Medicare fileYes · 82% of these records are
- In the CMS Doctors and Clinicians fileYes · 68% of these records are
- Graduated1999 · median 2017 among the 4,739 with a school on file
- Record last updated2016 · 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).
154 physician assistant records list a practice address in Lansing
They are 154 of the 5,276 NPPES records with a practice address in Lansing, and 6,989 physician assistant records in Michigan.
All 6,989 in Michigan → Every provider in Lansing → Physician Assistant nationwide →
The 8 physician assistant records with the nearest ZIP codes
- Peter Bennick, P.A.Lansing, MI 489101992881221
- Sara Berti, PA-CLansing, MI 489101164803938
- Stefanie Clutten, PALansing, MI 489101407999824
- Sydney Coldren, PA-CLansing, MI 489101093264152
- Eric Duffield, P.ALansing, MI 489101245427004
- Paul Gualtier, PACLansing, MI 489101093705493
- Patrick Hite, PALansing, MI 489101780912626
- Alana KakishLansing, MI 489101316758816
Common questions
What is Diane Marie Willman, PA's NPI number?
Diane Marie Willman, PA's National Provider Identifier (NPI) is 1821022195, issued on Jul 10, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Diane Marie Willman, PA located?
The NPPES record lists a practice address at 401 W Greenlawn Ave, Lansing, MI, 48910. Phone: (517) 975-9500. Providers update this record themselves, so call before visiting.
How can I verify Diane Marie Willman, PA's license?
NPPES lists Michigan license number 5601003309, as entered by the provider. Search the Michigan board that licenses this profession; the NPPES record confirms identity only.
How much does Diane Marie Willman, PA prescribe under Medicare Part D?
In 2024, Diane Marie Willman, PA had 70 Medicare Part D claims for 50 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.