Quick answers
- Does Douglas R. Merritt accept Medicare assignment?
- Yes. Medicare's clinician data says Douglas R. Merritt accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of October 2, 2026. Ask the office to confirm before your visit.
- How many Medicare patients does Douglas R. Merritt see?
- In 2024, CMS data shows 495 Original Medicare patients and 683 services for Douglas R. Merritt. This counts Original Medicare only and measures volume, not quality.
- What is Douglas R. Merritt's NPI number?
- 1093718322. 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 Douglas R. Merritt, 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 | 495 |
|---|---|
| Services billed to Medicare | 683 |
| Different services or procedures | 22 |
| Participating Medicare provider | Yes |
| Average age of these patients | 77 |
Most frequent services
- Established patient complete exam of visual system (92014)350 services
- Imaging of optic nerve (92133)66 services
- Established patient problem focused exam of visual system (92012)60 services
- Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)48 services
- Exam of visual field with extended testing (92083)47 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 pressure69%
- High cholesterol68%
- Arthritis46%
- Diabetes33%
- Chronic kidney disease25%
- COPD18%
Practice locations
Addresses where Douglas R. Merritt is enrolled with Medicare (CMS data updated October 2, 2026).
- 1226 NE 7th StGrants Pass, OR 97526 (541) 476‑6636
Group practices
Medicare enrollment lists Douglas R. Merritt as a member of this group (CMS data updated October 2, 2026).
- Cascade Eyecare Center PC4 clinicians in the group
Specialties
- Ophthalmologyprimary
Other ophthalmologists in Grants Pass
Clinicians with the same Medicare primary specialty in Grants Pass, OR — not a recommendation.
Other clinicians in Cascade Eyecare Center PC
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | University Of Texas Medical School At Houston |
| Graduation year | 1986 (40 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1093718322 |
| 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