Mary Elizabeth Van Siclen, MD

Medicare activity in 2024

Official CMS public-use data for Mary Elizabeth Van Siclen, 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)96 services
2. Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more (99215)45 services
3. Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit (G0439)26 services
4. Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)17 services
5. Admn sarscov2 vacc 1 dose (90480)15 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 cholesterol75%
• High blood pressure72%
• Arthritis44%
• Anxiety30%
• Diabetes24%
• Chronic kidney disease24%

Hospitals where Mary Elizabeth Van Siclen works

Medicare's Facility Affiliation Data lists Mary Elizabeth Van Siclen 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.

• Middlesex HospitalMiddletown, CT · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 070020

Practice locations

Addresses where Mary Elizabeth Van Siclen is enrolled with Medicare (CMS data updated October 2, 2026).

• 6 Main StDurham, CT 06422 (860) 358‑5020
• 90 S Main StMiddletown, CT 06457 (860) 358‑4821

Group practices

Medicare enrollment lists Mary Elizabeth Van Siclen as a member of these groups (CMS data updated October 2, 2026).

• Middlesex Hospital234 clinicians in the group
• MHS Primary Care, Inc.180 clinicians in the group

Specialties

• Family Practiceprimary

Find other Family Practice doctors in Connecticut →

Other family doctors in Connecticut

Clinicians with the same Medicare primary specialty in Connecticut — not a recommendation.

• Katherine Vaillancourt, MD
• Cynthia R. Groves, MD
• Rosario Giacomini, DO
• Timothy W. Chapados, DO
• Sarah C. Hilding, MD
• Nicholas R. Sgrignoli, MD
• Ashleigh Wells
• Farrah El Khatib, DO

All family doctors in Connecticut →

Other clinicians in Middlesex Hospital

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

• Amna Iqbal, MD
• Shannon L. Talbot
• Mackenzie L. Smith, MD
• Siobhan E. Harder
• Laurence Chong, MD
• Kristen Wilcox, CSW

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