Marcarious A. Mariyampillai, MD

Medicare activity in 2024

Official CMS public-use data for Marcarious A. Mariyampillai, 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)317 services
2. Hospital discharge day management, more than 30 minutes (99239)218 services
3. Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)196 services
4. Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes (99223)158 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%
• Ischemic heart disease50%
• Chronic kidney disease48%
• Depression44%

Hospitals where Marcarious A. Mariyampillai works

Medicare's Facility Affiliation Data lists Marcarious A. Mariyampillai 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.

• Saint Clare's Hospital/ Denville CampusDenville, NJ · Acute Care Hospital · Medicare rating: 2 of 5 stars · Emergency services: listed by Medicare · CCN 310050

Practice locations

Addresses where Marcarious A. Mariyampillai is enrolled with Medicare (CMS data updated October 2, 2026).

• 25 Pocono RdDenville, NJ 07834 (973) 927‑5788

Group practices

Medicare enrollment lists Marcarious A. Mariyampillai as a member of this group (CMS data updated October 2, 2026).

• Internal Medicine of Morris County LLC78 clinicians in the group

Specialties

• Internal Medicineprimary

Find other Internal Medicine doctors in New Jersey →

Other internal medicine doctors in Denville

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

• Victoria S. Lal, MD
• Christina M. Torre, DO
• Seth Levy, MD
• John B. Forward, MD
• Subramoni Sundaram, MD
• Michael Nicolai, MD
• Zahra Beizaeipour, MD
• Liliana Moreno Garcia, MD

All internal medicine doctors in Denville →

Other clinicians in Internal Medicine of Morris County LLC

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

• Victoria S. Lal, MD
• Barbara A. Girz, DO
• Justin Beck, CSW
• Vamsee S. Reddy, MD
• Pramil Cheriyath, MD
• Liliana Moreno Garcia, 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