Quick answers
- Does Ashwin K. Thiagarajasubramanian accept Medicare assignment?
- Yes. Medicare's clinician data says Ashwin K. Thiagarajasubramanian 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 Ashwin K. Thiagarajasubramanian see?
- In 2024, CMS data shows 344 Original Medicare patients and 686 services for Ashwin K. Thiagarajasubramanian. This counts Original Medicare only and measures volume, not quality.
- What is Ashwin K. Thiagarajasubramanian's NPI number?
- 1134562879. 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 Ashwin K. Thiagarajasubramanian, 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 | 344 |
|---|---|
| Services billed to Medicare | 686 |
| Different services or procedures | 35 |
| Participating Medicare provider | Yes |
| Average age of these patients | 75 |
Most frequent services
- Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)117 services
- Ultrasound of heart with color-depicted blood flow, rate, direction and valve function (93306)112 services
- Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)69 services
- Exercise or drug-induced heart stress test with electrocardiogram (ecg) with supervision by physician (93016)50 services
- Exercise or drug-induced heart stress test with electrocardiogram (ecg) with review by physician (93018)50 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%
- Ischemic heart disease58%
- Arthritis53%
- Heart failure52%
- Atrial fibrillation48%
Hospitals where Ashwin K. Thiagarajasubramanian works
Medicare's Facility Affiliation Data lists Ashwin K. Thiagarajasubramanian 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.
- Main Line Hospital LankenauWynnewood, PA · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 390195
- Phoenixville HospitalPhoenixville, PA · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 390127
- Pottstown HospitalPottstown, PA · Acute Care Hospital · Medicare rating: 2 of 5 stars · Emergency services: listed by Medicare · CCN 390123
- Reading HospitalWest Reading, PA · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 390044
Practice locations
Addresses where Ashwin K. Thiagarajasubramanian is enrolled with Medicare (CMS data updated October 2, 2026).
- 301 S 7th Ave, Suite 2020West Reading, PA 19611 (610) 375‑6565
- 824 Main St, Suite 306Phoenixville, PA 19460 (610) 983‑1530
Group practices
Medicare enrollment lists Ashwin K. Thiagarajasubramanian as a member of these groups (CMS data updated October 2, 2026).
- Reading Hospital186 clinicians in the group
- Phoenixville Clinic Company LLC134 clinicians in the group
Specialties
Find other Cardiovascular Disease (Cardiology) doctors in Pennsylvania →
Other cardiologists in West Reading
Clinicians with the same Medicare primary specialty in West Reading, PA — not a recommendation.
Other clinicians in Reading Hospital
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Ohio State University College Of Medicine |
| Graduation year | 2013 (13 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1134562879 |
| 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