Roy R. Shen, MD

Medicare activity in 2024

Official CMS public-use data for Roy R. Shen, 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 low level od decision making, if using time, 20 minutes or more (99213)80 services
2. New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more (99203)35 services
3. New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more (99204)33 services
4. Subsequent hospital care with straightforward or low level of medical decision making, per day, if using time, at least 25 minutes (99231)16 services
5. Removal of gallbladder using an endoscope (47562)14 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%
• Arthritis43%
• Diabetes39%
• Anxiety38%
• Ischemic heart disease37%

Hospitals where Roy R. Shen works

Medicare's Facility Affiliation Data lists Roy R. Shen 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.

• Lowell General HospitalLowell, MA · Acute Care Hospital · Medicare rating: 2 of 5 stars · Emergency services: listed by Medicare · CCN 220063
• Merrimack Health Lawrence HospitalLawrence, MA · Acute Care Hospital · Medicare rating: 2 of 5 stars · Emergency services: listed by Medicare · CCN 220010

Practice locations

Addresses where Roy R. Shen is enrolled with Medicare (CMS data updated October 2, 2026).

• 21 Village SqChelmsford, MA 01824 (978) 995‑3292

Group practices

Medicare enrollment lists Roy R. Shen as a member of this group (CMS data updated October 2, 2026).

• Precision Surgical Specialists of Lowell PC4 clinicians in the group

Specialties

• General Surgeryprimary

Find other General Surgery doctors in Massachusetts →

Other general surgeons in Massachusetts

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

• Caitlin Polistena, MD
• Michelle F. Nessen, MD
• Sarah Meade, DO
• Janice G. Rothschild, MD
• Paula M. Muto, MD
• Ryan Carlson, MD
• Kate Lloyd, MD
• Aleksandr Kurbanov, MD

All general surgeons in Massachusetts →

Other clinicians in Precision Surgical Specialists of Lowell PC

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

• Caitlin Polistena, MD
• Michelle F. Nessen, 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