Gnanam Thambi Pillai, MD

Medicare activity in 2024

Official CMS public-use data for Gnanam Thambi Pillai, 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.

Most frequent services

1. Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes (99233)385 services
2. Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)246 services
3. Hospital discharge day management, more than 30 minutes (99239)140 services
4. Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes (99223)137 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%
• Arthritis65%
• Anxiety55%
• Ischemic heart disease54%
• Depression54%

Hospitals where Gnanam Thambi Pillai works

Medicare's Facility Affiliation Data lists Gnanam Thambi Pillai 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.

• Kettering Health DaytonDayton, OH · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: not listed by Medicare · CCN 360133
• Kettering Health Main CampusKettering, OH · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 360079
• Kettering Health MiamisburgMiamisburg, OH · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 360239

Practice locations

Addresses where Gnanam Thambi Pillai is enrolled with Medicare (CMS data updated October 2, 2026).

• 33 W Rahn Rd, Suite 101Dayton, OH 45429

Group practices

Medicare enrollment lists Gnanam Thambi Pillai as a member of this group (CMS data updated October 2, 2026).

• South Dayton Acute Care Consultants, Inc119 clinicians in the group

Specialties

• Internal Medicineprimary

Find other Internal Medicine doctors in Ohio →

Other internal medicine doctors in Dayton

Clinicians with the same Medicare primary specialty in Dayton, OH — not a recommendation.

• Arunbabu Sankaranarayanan
• Johan Worndle, MD
• Ivan D. Ongom, MD
• Mamle Anim, MD
• Michael I. Jarman, MD
• Nivedita Mankotia, MD
• Indu N. Rao, MD
• Carrie A. Worley, MD

All internal medicine doctors in Dayton →

Other clinicians in South Dayton Acute Care Consultants, Inc

Medicare enrollment lists these clinicians in the same group practice — not a recommendation.

• Abigail L. Wonderly, PA
• Russell S. Harvey, MD
• Daniel L. Butnariu, MD
• Susan M. Grandhi, MD
• Heta Patel
• Shruti H. Patel, MD

Clinician information

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

1. Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated October 2, 2026, retrieved October 29, 2026
2. Hospital General Information — CMS, data updated October 26, 2026, retrieved November 13, 2026
3. National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
4. Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
5. NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
6. Medicare Care Compare — official Medicare tool to look up clinicians