Rehan J. Khan, MD

Medicare activity in 2024

Official CMS public-use data for Rehan J. Khan, 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 35 minutes (99232)63 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%
• Arthritis56%
• Diabetes54%
• Ischemic heart disease51%
• Heart failure45%

Hospitals where Rehan J. Khan works

Medicare's Facility Affiliation Data lists Rehan J. Khan 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.

• Garnet Health Medical CenterMiddletown, NY · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 330126
• Montefiore St Luke's CornwallNewburgh, NY · Acute Care Hospital · Medicare rating: 2 of 5 stars · Emergency services: listed by Medicare · CCN 330264

Practice locations

Addresses where Rehan J. Khan is enrolled with Medicare (CMS data updated October 2, 2026). The first 5 of 6; the Medicare profile lists all.

• 15 Laurel Ave, Suite 100Cornwall, NY 12518 (845) 458‑9000
• 19 Laurel AveCornwall, NY 12518
• 300 Crystal Run RdMiddletown, NY 10941 (845) 692‑6999
• 4018 Case StElmhurst, NY 11373 (718) 205‑7400
• 68 Harris Bushville RdMonticello, NY 12701 (845) 794‑3300

Group practices

Medicare enrollment lists Rehan J. Khan as a member of these groups (CMS data updated October 2, 2026).

• Crystal Run Healthcare Physicians LLP362 clinicians in the group
• Ulster Physician Medicine Services PC76 clinicians in the group
• Hudson Vista Medical PC44 clinicians in the group
• Muhammad J.S.Khan MD, PC2 clinicians in the group

Specialties

• Hospitalistprimary
• Internal Medicinealso

Find other Hospitalist doctors in New York →

Other hospitalists in Cornwall

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

• Christopher H. Rajkumar, MD
• Thien-Duy B. Tran, MD
• Javeria F. Chaudhry, MD
• Saher N. Amin, MD
• Funsho R. Busari-Alabi, MD
• Shawn J. Brito, MD
• Shilpa Mathew, DO
• Balika Lal, MD

All hospitalists in Cornwall →

Other clinicians in Crystal Run Healthcare Physicians LLP

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

• Steven Grundfast, MD
• Matthew S. Leone, MD
• Puja Sharma, MD
• Katherine G. McDonald, CNS
• Christopher H. Rajkumar, MD
• Kelsey C. Branch

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