Quick answers
- Does Dennis L. Sommer accept Medicare assignment?
- Medicare's clinician data says Dennis L. Sommer may accept Medicare assignment (as of October 2, 2026). Ask the office whether they accept it for your visit.
- How many Medicare patients does Dennis L. Sommer see?
- In 2024, CMS data shows 425 Original Medicare patients and 548 services for Dennis L. Sommer. This counts Original Medicare only and measures volume, not quality.
- What is Dennis L. Sommer's NPI number?
- 1750395216. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Medicare activity in 2024
Official CMS public-use data for Dennis L. Sommer, data year 2024 (released May 21, 2026). It covers Original Medicare (fee-for-service) patients only, not Medicare Advantage or other insurance. It shows volume, not quality or outcomes. CMS hides any count of 10 or fewer patients.
| Original Medicare patients | 425 |
|---|---|
| Services billed to Medicare | 548 |
| Different services or procedures | 12 |
| Participating Medicare provider | Yes |
| Average age of these patients | 77 |
Most frequent services
- Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)425 services
- Removal of cataract with insertion of prosthetic lens (66984)33 services
- New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more (99203)29 services
- Exam of visual field with extended testing (92083)20 services
- Imaging of optic nerve (92133)16 services
Chronic conditions among these patients
Share of this clinician’s Original Medicare patients with each condition, as published by CMS (it describes the patients, not the care given).
- High blood pressure75%
- High cholesterol75%
- Arthritis46%
- Ischemic heart disease31%
- Diabetes29%
- Chronic kidney disease25%
Practice locations
Addresses where Dennis L. Sommer is enrolled with Medicare (CMS data updated October 2, 2026).
- 316 Pine Lake AveLa Porte, IN 46350 (219) 362‑2336
Specialties
- Optometryprimary
Other optometrists in La Porte
Clinicians with the same Medicare primary specialty in La Porte, IN — not a recommendation.
Clinician information
| Credential | OD |
|---|---|
| Optometry school | Indiana University - School Of Optometry |
| Graduation year | 1984 (42 years since optometry school) |
| Gender (as listed) | Male |
| Medicare assignment | May accept for some services |
| NPI (National Provider Identifier) | 1750395216 |
| Corrections | Report an error or suggest an update → |
Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.
Sources
- National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
- Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
- NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
- Medicare Care Compare — official Medicare tool to look up clinicians