Gary S. Lewis, MD
Family Medicine Physician · Thiensville, WI
Gary S. Lewis, MD is a family medicine physician with a practice address in Thiensville, Wisconsin, and NPI 1194762765, issued on Jun 1, 2006. Check the license (Wisconsin 33004-020, as entered in NPPES) on the Wisconsin Medical Examining Board; the Medicare figures below come from public CMS files.
- Name
- Gary S. Lewis
- Credential
- MD
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License numbers
- 33004-020 WI
330004-020 WI
Self-reported in NPPES; status is on the state search - Practice location
- 136 N Main St, Thiensville, WI 53092
- Phone
- (262) 242-3369
- Enumerated
- Jun 1, 2006
- Record last updated
- Jun 15, 2016 (not updated in 10 years: call before relying on the address or phone)
- Fax
- (262) 242-3219
- Medicaid ID
- 31823100 WI
- Medicare enrollment
- Enrolled (PECOS I20050214000308); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 3,765 in Wisconsin → Look up another NPI →
Also registered at 136 N Main St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Seema Afsari, D.O.Family Medicine Physician1114287141
- Dalia Elnahas, CPHTPharmacy Technician1497524573
- Hadeer EmeiraPharmacy Technician1205657418
- Rita Larsen, RDN, CDRegistered Dietitian1215477096
Verify Gary S. Lewis in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWisconsin Medical Examining Board
Search for license 33004-020Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
1% more Medicare Part D claims than the average family medicine physician in 2024
3,588 Medicare Part D claims for 311 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. Brand-name drugs were 12% of claims. 42 claims were for opioids.
Most prescribed
- Amlodipine Besylate321 claims
- Lisinopril167 claims
- Rosuvastatin Calcium159 claims
- Losartan Potassium133 claims
- Atorvastatin Calcium117 claims
- Levothyroxine Sodium102 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
- Independent Physicians OF Wisconsin LLCThiensville, WI
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Gary S. Lewis among 3,765 family medicine physician records in Wisconsin
Gary S. Lewis, MD is one of 3,765 family medicine physician records with a practice address in Wisconsin. 75% 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 10% of them.
- NPI issued2006 · 10% of these records are older, 46% newer
- In a Medicare fileYes · 75% of these records are
- In the CMS Doctors and Clinicians fileYes · 62% of these records are
- Graduated1982 · median 2007 among the 2,347 with a school on file
- Record last updated2016 · 56% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207Q00000X and a Wisconsin practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
3 family medicine physician records list a practice address in Thiensville
They are 3 of the 54 NPPES records with a practice address in Thiensville, and 3,765 family medicine physician records in Wisconsin.
All 3,765 in Wisconsin → Every provider in Thiensville → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- Nicola Charlton, M.D.Mequon, WI 530921326050436
- Robert Frank, MDMequon, WI 530921659303899
- Michael Gerard, MDMequon, WI 530921598742652
- Richard Lewis, M.D.Mequon, WI 530921306819305
- Paul Mankus, MDMequon, WI 530921639131998
- Anne Mattson, MDMequon, WI 530921598799496
- Larisa Mazur, MDThiensville, WI 530921861565202
- Jennifer Micke-Kopetsky, M.D.Mequon, WI 530921871527341
Common questions
What is Gary S. Lewis, MD's NPI number?
Gary S. Lewis, MD's National Provider Identifier (NPI) is 1194762765, issued on Jun 1, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Gary S. Lewis, MD located?
The NPPES record lists a practice address at 136 N Main St, Thiensville, WI, 53092. Phone: (262) 242-3369. Providers update this record themselves, so call before visiting.
How can I verify Gary S. Lewis, MD's license?
NPPES lists Wisconsin license number 33004-020, 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 Gary S. Lewis, MD prescribe under Medicare Part D?
In 2024, Gary S. Lewis, MD had 3,588 Medicare Part D claims for 311 beneficiaries; the average among family medicine physician prescribers was 3,544. 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.