Gary Lewis, MD
NPI 1194762765 · Family Medicine Physician · Thiensville, WI
Enrolled with Medicare as Practitioner - Family Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Gary Lewis, MD is a Family Medicine Physician provider in Thiensville, WI (NPI 1194762765).
Provider details
- NPI number
- 1194762765
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 330004-020 (WI)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
20 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
769 Medicare services, 2024 (ranked within specialty)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 248 | $120 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 202 | $85 |
| Insertion of Needle Into Vein for Collection of Blood Sample36415 | 113 | $9 |
| Automated Urinalysis Test81003 | 80 | $2 |
| Annual Wellness Visit, Includes a Personalized Prevention Plan of Service (pps), Subsequent VisitG0439 | 46 | $122 |
| Blood Glucose (sugar) Level82947 | 40 | $4 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 79 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Amlodipine Besylate | 321 | 70 |
| Lisinopril | 167 | 40 |
| Rosuvastatin Calcium | 159 | 40 |
| Losartan Potassium | 133 | 42 |
| Atorvastatin Calcium | 117 | 37 |
| Levothyroxine Sodium | 102 | 26 |
| Metformin Hcl |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-06-01
- Last updated
- 2016-06-15
Frequently asked questions
- What is Gary Lewis's NPI number?
- Gary Lewis's National Provider Identifier (NPI) is 1194762765, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Gary Lewis's specialty?
- Gary Lewis is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Gary Lewis located?
- Gary Lewis's practice location on file with NPPES is 136 N Main St, Thiensville, WI 53092-1606.
- What is Gary Lewis's phone number?
- The practice phone number listed in the NPPES registry for Gary Lewis is (262) 242-3369.
- Does Gary Lewis accept Medicare?
- Gary Lewis is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Gary Lewis's NPI active?
- Yes — Gary Lewis's NPI (1194762765) is active in the NPPES registry as of the last update on 2016-06-15.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.