Quick answers
- Does Ashok J. Ponniah accept Medicare assignment?
- Yes. Medicare's clinician data says Ashok J. Ponniah 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 Ashok J. Ponniah see?
- In 2024, CMS data shows 273 Original Medicare patients and 717 services for Ashok J. Ponniah. This counts Original Medicare only and measures volume, not quality.
- What is Ashok J. Ponniah's NPI number?
- 1144644345. 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 Ashok J. Ponniah, 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 | 273 |
|---|---|
| Services billed to Medicare | 717 |
| Different services or procedures | 10 |
| Participating Medicare provider | Yes |
| Average age of these patients | 75 |
Most frequent services
- Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)298 services
- Hospital discharge day management, more than 30 minutes (99239)182 services
- Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes (99233)80 services
- Subsequent hospital care with straightforward or low level of medical decision making, per day, if using time, at least 25 minutes (99231)48 services
- Initial hospital care with straightforward or low level of medical decision making, per day, if using time, at least 40 minutes (99221)45 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%
- Arthritis51%
- Heart failure44%
- Ischemic heart disease40%
- Diabetes38%
Hospitals where Ashok J. Ponniah works
Medicare's Facility Affiliation Data lists Ashok J. Ponniah at these hospitals (updated October 2, 2026). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians. Star rating and emergency services: Hospital General Information (CMS), data updated October 26, 2026.
- Capital Medical CenterOlympia, WA · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 500139
Practice locations
Addresses where Ashok J. Ponniah is enrolled with Medicare (CMS data updated October 2, 2026).
- 3900 Capital Mall Dr SWOlympia, WA 98502 (360) 704‑4743
Group practices
Medicare enrollment lists Ashok J. Ponniah as a member of this group (CMS data updated October 2, 2026).
- Capital Medical Center Specialty Physicians LLC99 clinicians in the group
Specialties
- Internal Medicineprimary
Other internal medicine doctors in Olympia
Clinicians with the same Medicare primary specialty in Olympia, WA — not a recommendation.
Other clinicians in Capital Medical Center Specialty Physicians LLC
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | DO |
|---|---|
| Graduation year | 2014 (12 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1144644345 |
| 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
- Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated October 2, 2026, retrieved October 29, 2026
- Hospital General Information — CMS, data updated October 26, 2026, retrieved November 13, 2026
- 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