Douglas W. Lillie, MD
Internal Medicine Physician · West Allis, WI
Douglas W. Lillie, MD is an internal medicine physician with a practice address in West Allis, Wisconsin, and NPI 1811004369, issued on Aug 23, 2006. Check the license (Wisconsin 30235, as entered in NPPES) on the Wisconsin Medical Examining Board; the Medicare figures below come from public CMS files.
- Name
- Douglas W. Lillie
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 30235 WI
Self-reported in NPPES; status is on the state search - Practice location
- 2424 S 90TH St, West Allis, WI 53227
- Phone
- (414) 328-8700
- Enumerated
- Aug 23, 2006
- Record last updated
- Jun 5, 2025
- Fax
- (414) 328-8864
- Medicaid ID
- 31481200 WI
- Medicare enrollment
- Enrolled (PECOS I20100122000654); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 2,078 in Wisconsin → Look up another NPI →
Also registered at 2424 S 90TH St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Sharon Bardele, RN BS MSC CRNNurse Practitioner1467592808
- Feridoun Beroukhim, M.D.Pediatrics Physician1184642670
- William Burns, M.D.Internal Medicine Physician1497828339
- Kathleen Conrad, RPHPharmacist1578999405
- Patrick Cummings, MDSports Medicine (Orthopaedic Surgery) Physician1194715995
- Richard Davenport, MDOphthalmology Physician1811999063
Verify Douglas W. Lillie in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWisconsin Medical Examining Board
Search for license 30235Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
5.4 times the Medicare Part D claims of the average internal medicine physician in 2024
17,292 Medicare Part D claims for 1,016 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 12% of claims. 780 claims were for opioids.
Most prescribed
- Atorvastatin Calcium1,107 claims
- Amlodipine Besylate987 claims
- Losartan Potassium735 claims
- Levothyroxine Sodium525 claims
- Metoprolol Succinate471 claims
- Lisinopril413 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
- Presbyterian Homes OF Wisconsin IncWaukesha, WI
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Douglas W. Lillie among 2,078 internal medicine physician records in Wisconsin
Douglas W. Lillie, MD is one of 2,078 internal medicine physician records with a practice address in Wisconsin. 70% 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 9% of them.
- NPI issued2006 · 9% of these records are older, 46% newer
- In a Medicare fileYes · 70% of these records are
- In the CMS Doctors and Clinicians fileYes · 53% of these records are
- Graduated1985 · median 2002 among the 1,098 with a school on file
- Record last updated2025 · 55% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a Wisconsin practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
32 internal medicine physician records list a practice address in West Allis
They are 32 of the 1,362 NPPES records with a practice address in West Allis, and 2,078 internal medicine physician records in Wisconsin.
All 2,078 in Wisconsin → Every provider in West Allis → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Michael Dawson, MDWest Allis, WI 532271992810139
- Kathryn Havens, MDWest Allis, WI 532271164440921
- Harvey Hewes, M.D.West Allis, WI 532271255357554
- Eric Luy, MDWest Allis, WI 532271538110382
- Andrew McDonagh, M.D.West Allis, WI 532271639157449
- Joan Milott, MDWest Allis, WI 532271528010238
- Monica O'Sullivan, MDWest Allis, WI 532271043262546
- John Obudzinski, D.O.West Allis, WI 532271942388434
Common questions
What is Douglas W. Lillie, MD's NPI number?
Douglas W. Lillie, MD's National Provider Identifier (NPI) is 1811004369, issued on Aug 23, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Douglas W. Lillie, MD located?
The NPPES record lists a practice address at 2424 S 90TH St, West Allis, WI, 53227. Phone: (414) 328-8700. Providers update this record themselves, so call before visiting.
How can I verify Douglas W. Lillie, MD's license?
NPPES lists Wisconsin license number 30235, as entered by the provider. Search the Wisconsin Medical Examining Board at https://dsps.wi.gov/Pages/BoardsCouncils/MEB/Default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Douglas W. Lillie, MD prescribe under Medicare Part D?
In 2024, Douglas W. Lillie, MD had 17,292 Medicare Part D claims for 1,016 beneficiaries; the average among internal medicine physician prescribers was 3,176. 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.