Quick answers
- Does Douglas J. Whittaker accept Medicare assignment?
- Yes. Medicare's clinician data says Douglas J. Whittaker 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 J. Whittaker see?
- In 2024, CMS data shows 603 Original Medicare patients and 2,672 services for Douglas J. Whittaker. This counts Original Medicare only and measures volume, not quality.
- What is Douglas J. Whittaker's NPI number?
- 1548364722. 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 J. Whittaker, 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 | 603 |
|---|---|
| Services billed to Medicare | 2,672 |
| Different services or procedures | 27 |
| Participating Medicare provider | Yes |
| Average age of these patients | 76 |
Most frequent services
- Established patient problem focused exam of visual system (92012)384 services
- Established patient complete exam of visual system (92014)296 services
- Photography of the retina (92250)283 services
- Extended exam involving color vision testing (92283)275 services
- Exam of visual field with extended testing (92083)257 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 pressure70%
- High cholesterol62%
- Arthritis40%
- Diabetes26%
- Ischemic heart disease19%
- Anxiety19%
Practice locations
Addresses where Douglas J. Whittaker is enrolled with Medicare (CMS data updated October 2, 2026).
- 407 Main StSeneca, KS 66538 (785) 336‑3571
Group practices
Medicare enrollment lists Douglas J. Whittaker as a member of this group (CMS data updated October 2, 2026).
- Whittaker and Tang PA2 clinicians in the group
Specialties
- Optometryprimary
Other optometrists in Kansas
Clinicians with the same Medicare primary specialty in Kansas — not a recommendation.
Other clinicians in Whittaker and Tang PA
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | OD |
|---|---|
| Optometry school | University Of Houston - College Of Optometry |
| Graduation year | 1999 (27 years since optometry school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1548364722 |
| 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