Jonathan B. Hargreaves, MD

Medicare activity in 2024

Official CMS public-use data for Jonathan B. Hargreaves, 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. X-ray of chest, 1 view (71045)240 services
2. Ct scan of chest without contrast (71250)235 services
3. Ct scan of chest with contrast (71260)181 services
4. X-ray of chest, 2 views (71046)159 services
5. Ct scan of blood vessels of chest with contrast (71275)102 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 cholesterol73%
• Arthritis48%
• Anxiety36%
• Depression33%
• Ischemic heart disease32%

Hospitals where Jonathan B. Hargreaves works

Medicare's Facility Affiliation Data lists Jonathan B. Hargreaves 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.

• Hartford HospitalHartford, CT · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 070025
• John Dempsey Hospital of the University of ConnectFarmington, CT · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 070036
• The Hospital of Central ConnecticutNew Britain, CT · Acute Care Hospital · Medicare rating: 2 of 5 stars · Emergency services: listed by Medicare · CCN 070035

Practice locations

Addresses where Jonathan B. Hargreaves is enrolled with Medicare (CMS data updated October 2, 2026).

• 263 Farmington AveFarmington, CT 06030 (860) 679‑3692
• 850 Bolton RdStorrs, CT 06269 (860) 679‑3692

Group practices

Medicare enrollment lists Jonathan B. Hargreaves as a member of this group (CMS data updated October 2, 2026).

• University of Connecticut Health Center639 clinicians in the group

Specialties

• Diagnostic Radiologyprimary

Find other Diagnostic Radiology doctors in Connecticut →

Other radiologists in Farmington

Clinicians with the same Medicare primary specialty in Farmington, CT — not a recommendation.

• Gary Gong, MD
• Reuben Rock, MD
• Clifford K. Yang, MD
• Timothy J. Herbst, MD
• Michael T. Baldwin, MD
• Daniel Marrero, MD
• Electra V. Kaloudis, MD
• Marco Molina, MD

All radiologists in Farmington →

Other clinicians in University of Connecticut Health Center

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

• Laura Kvenvold, MD
• Bernardo Rodrigues, MD
• Adrian A. Salmon, MD
• David B. Banach, MD
• Joel B. Levine, MD
• Martha Radford, 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