Quick answers
- Does William C. Keppler Iii accept Medicare assignment?
- Yes. Medicare's clinician data says William C. Keppler Iii 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 William C. Keppler Iii see?
- In 2024, CMS data shows 69 Original Medicare patients and 452 services for William C. Keppler Iii. This counts Original Medicare only and measures volume, not quality.
- What is William C. Keppler Iii's NPI number?
- 1659432102. 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 William C. Keppler Iii, 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 | 69 |
|---|---|
| Services billed to Medicare | 452 |
| Different services or procedures | 4 |
| Participating Medicare provider | Yes |
| Average age of these patients | 44 |
Most frequent services
- Subsequent hospital care with straightforward or low level of medical decision making, per day, if using time, at least 25 minutes (99231)319 services
- Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)122 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).
- Anxiety75%
- High cholesterol57%
- High blood pressure48%
- Depression46%
- Asthma28%
- Diabetes25%
Practice locations
Addresses where William C. Keppler Iii is enrolled with Medicare (CMS data updated October 2, 2026).
- 3402 S 19th StTacoma, WA 98405 (253) 301‑5400
Group practices
Medicare enrollment lists William C. Keppler Iii as a member of this group (CMS data updated October 2, 2026).
- Alliance for South Sound Health9 clinicians in the group
Specialties
- Psychiatryprimary
Other psychiatrists in Tacoma
Clinicians with the same Medicare primary specialty in Tacoma, WA — not a recommendation.
Other clinicians in Alliance for South Sound Health
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Uniformed Services Uhs Fe Hebert School Of Med |
| Graduation year | 1997 (29 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1659432102 |
| 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