Ronald C. Fagan, MD

Medicare activity in 2024

Official CMS public-use data for Ronald C. Fagan, 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. Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)476 services
2. Chronic care management services, first 20 minutes of clinical staff time directed by health care professional, per calendar month (99490)430 services
3. Telephone medical discussion with physician, 11-20 minutes (99442)420 services
4. Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)274 services
5. Detection test by nucleic acid for organism, amplified probe technique (87798)247 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 disease49%
• Arthritis46%
• Diabetes34%
• Anxiety25%

Hospitals where Ronald C. Fagan works

Medicare's Facility Affiliation Data lists Ronald C. Fagan 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.

• Chsli St Joseph HospitalBethpage, NY · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 330332

Practice locations

Addresses where Ronald C. Fagan is enrolled with Medicare (CMS data updated October 2, 2026).

• 4900 Hempstead TpkeFarmingdale, NY 11735 (516) 752‑7000

Group practices

Medicare enrollment lists Ronald C. Fagan as a member of this group (CMS data updated October 2, 2026).

• Ronald C Fagan MD PC4 clinicians in the group

Specialties

• Internal Medicineprimary
• Gastroenterologyalso

Find other Internal Medicine doctors in New York →

Other internal medicine doctors in Farmingdale

Clinicians with the same Medicare primary specialty in Farmingdale, NY — not a recommendation.

• Pedro H. Calves, MD
• Orlando R. Suarez, MD
• Mohammud M. Alam, MD
• Heba A. Zaher, MD

All internal medicine doctors in Farmingdale →

Other clinicians in Ronald C Fagan MD PC

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

• Orlando R. Suarez, MD
• Stuart Horowitz, 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