Quick answers
- Does Ambalavanan Arunachalam accept Medicare assignment?
- Yes. Medicare's clinician data says Ambalavanan Arunachalam 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 Ambalavanan Arunachalam see?
- In 2024, CMS data shows 109 Original Medicare patients and 584 services for Ambalavanan Arunachalam. This counts Original Medicare only and measures volume, not quality.
- What is Ambalavanan Arunachalam's NPI number?
- 1073868154. 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 Ambalavanan Arunachalam, 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 | 109 |
|---|---|
| Services billed to Medicare | 584 |
| Different services or procedures | 21 |
| Participating Medicare provider | Yes |
| Average age of these patients | 67 |
Most frequent services
- Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes (99233)155 services
- Critical care, first 30-74 minutes (99291)121 services
- Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more (99215)120 services
- Prolonged hospital inpatient or observation care evaluation and management service(s) beyond the total time for the primary service (when the primary service has been selected using time on the date of the primary service); each additional 15 minutes by th (G0316)64 services
- Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)39 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%
- COPD75%
- Ischemic heart disease72%
- Diabetes68%
- Heart failure66%
Hospitals where Ambalavanan Arunachalam works
Medicare's Facility Affiliation Data lists Ambalavanan Arunachalam 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.
- Dekalb Regional Medical CenterFort Payne, AL · Acute Care Hospital · Medicare rating: 2 of 5 stars · Emergency services: listed by Medicare · CCN 010012
- Northwestern Medicine Central Dupage HospitalWinfield, IL · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 140242
- Northwestern Medicine McHenryMcHenry, IL · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 140116
- Northwestern Memorial HospitalChicago, IL · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 140281
- Palos Community HospitalPalos Heights, IL · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 140062
Practice locations
Addresses where Ambalavanan Arunachalam is enrolled with Medicare (CMS data updated October 2, 2026).
- 200 Medical Ctr Dr SWFort Payne, AL 35968 (256) 845‑3150
- 25 N Winfield RdWinfield, IL 60190 (630) 232‑0202
- 675 N St Clair, 200 Dept of Internal MedChicago, IL 60611 (312) 695‑8630
Group practices
Medicare enrollment lists Ambalavanan Arunachalam as a member of these groups (CMS data updated October 2, 2026).
- Northwestern Medical Faculty Foundation4,503 clinicians in the group
- Central Dupage Physician Group1,080 clinicians in the group
- Synergy Hospitalist Partners LLC5 clinicians in the group
Specialties
Other internal medicine doctors in Fort Payne
Clinicians with the same Medicare primary specialty in Fort Payne, AL — not a recommendation.
Other clinicians in Northwestern Medical Faculty Foundation
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 2010 (16 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1073868154 |
| 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