Laurence S. Bailen, MD

Medicare activity in 2024

Official CMS public-use data for Laurence S. Bailen, 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)423 services
2. Removal of polyps or growths of large bowel using an endoscope with mechanical snare (45385)238 services
3. Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope (43239)157 services
4. Biopsy of large bowel using a flexible endoscope (45380)115 services
5. New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more (99204)98 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 pressure66%
• Arthritis51%
• Anxiety33%
• Ischemic heart disease26%
• Depression24%

Hospitals where Laurence S. Bailen works

Medicare's Facility Affiliation Data lists Laurence S. Bailen 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.

• Brigham and Women's HospitalBoston, MA · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 220110
• Massachusetts General HospitalBoston, MA · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 220071
• Newton-Wellesley HospitalNewton, MA · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 220101

Practice locations

Addresses where Laurence S. Bailen is enrolled with Medicare (CMS data updated October 2, 2026).

• 2000 Washington St, Suite 368Newton, MA 02462 (617) 969‑1227

Group practices

Medicare enrollment lists Laurence S. Bailen as a member of this group (CMS data updated October 2, 2026).

• Gastroenterology Healthcare Associates PC11 clinicians in the group

Specialties

• Gastroenterologyprimary
• Internal Medicinealso

Find other Gastroenterology doctors in Massachusetts →

Other gastroenterologists in Newton

Clinicians with the same Medicare primary specialty in Newton, MA — not a recommendation.

• Miles Basil, MD
• Jeffrey A. Schwartz, MD
• Ann Marie Joyce, MD
• Michael D. O'Donnell, MD
• Lawrence S. Friedman, MD
• Benjamin E. Levitzky, MD
• Dennis E. Lee, MD
• Elissa E. Kaplan, MD

All gastroenterologists in Newton →

Other clinicians in Gastroenterology Healthcare Associates PC

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

• Miles Basil, MD
• Jeffrey A. Schwartz, MD
• Elissa E. Kaplan, MD
• Daria R. Homenko, MD
• Benjamin E. Levitzky, MD
• Michael D. O'Donnell, 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