Susanthi Gunadasa, MD

Medicare activity in 2024

Official CMS public-use data for Susanthi Gunadasa, 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 nursing facility care with moderate level of medical decision making, per day, if using time, at least 30 minutes (99309)1,100 services
2. Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes (99233)357 services
3. Residence visit for established patient with moderate level of medical decision making, per day, if using time, at least 40 minutes (99349)236 services
4. Initial nursing facility care with high level of medical decision making, per day, if using time, 50 minutes or more (99306)143 services
5. Residence visit for established patient with low level of medical decision making, per day, if using time, at least 30 minutes (99348)95 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%
• Arthritis54%
• Ischemic heart disease54%
• Alzheimer's disease or dementia53%
• Diabetes49%

Hospitals where Susanthi Gunadasa works

Medicare's Facility Affiliation Data lists Susanthi Gunadasa 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.

• Hackensack University Medical CenterHackensack, NJ · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 310001
• Holy Name Medical CenterTeaneck, NJ · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 310008
• Valley HospitalParamus, NJ · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 310012

Practice locations

Addresses where Susanthi Gunadasa is enrolled with Medicare (CMS data updated October 2, 2026).

• 1 W Ridgewood Ave, Suite 203Paramus, NJ 07652 (201) 494‑4887
• 30 Prospect AveHackensack, NJ 07601

Specialties

• Internal Medicineprimary
• Geriatric Medicinealso

Find other Internal Medicine doctors in New Jersey →

Other internal medicine doctors in Paramus

Clinicians with the same Medicare primary specialty in Paramus, NJ — not a recommendation.

• Grace Yang, MD
• Irina Anshelevich, MD
• Madanmohan R. Patel, MD
• Muhammad F. Ijaz, MD
• Allen R. Griggs, DO
• Reyhan Berkel, MD
• Abdulkader Kasabji, MD
• Robert V. Kavaler, MD

All internal medicine doctors in Paramus →

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