Louis Winternheimer, M.D.
NPI 1528033107 · Family Medicine Physician · Indianapolis, IN
Enrolled with Medicare as Practitioner - Family Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Louis Winternheimer, M.D. is a Family Medicine Physician provider in Indianapolis, IN (NPI 1528033107).
Provider details
- NPI number
- 1528033107
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 01051367A (IN)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
20 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
2 documented practice locations
- Medicare service volume (vs. specialty peers)25% of score
30 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
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 .
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 | 30 | $119 |
Typical Medicare-allowed amounts for these services range $119–$119 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 35 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Amlodipine Besylate | 82 | 28 |
| Atorvastatin Calcium | 81 | 26 |
| Lisinopril | 71 | 21 |
| Hydrochlorothiazide | 65 | 19 |
| Hydrocodone/Acetaminophenbrand: Hydrocodone-Acetaminophen | 65 | 14 |
| Gabapentin | 56 | 14 |
| Albuterol Sulfate |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$55 across 3 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Additional practice locations (1)
- 401 E 34th StIndianapolis, IN 46205-3754Phone: (317) 926-1507Fax: (317) 926-1508
Registry dates
- Enumerated
- 2006-02-17
- Last updated
- 2021-06-09
- Certified
- 2021-06-09
Frequently asked questions
- What is Louis Winternheimer's NPI number?
- Louis Winternheimer's National Provider Identifier (NPI) is 1528033107, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Louis Winternheimer's specialty?
- Louis Winternheimer is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Louis Winternheimer located?
- Louis Winternheimer's practice location on file with NPPES is 10122 E 10th St Ste 100, Indianapolis, IN 46229-2697.
- What is Louis Winternheimer's phone number?
- The practice phone number listed in the NPPES registry for Louis Winternheimer is (317) 355-5717.
- Does Louis Winternheimer accept Medicare?
- Louis Winternheimer is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Louis Winternheimer's NPI active?
- Yes — Louis Winternheimer's NPI (1528033107) is active in the NPPES registry as of the last update on 2021-06-09.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.