Nathan J. Susnow, MD

Medicare activity in 2024

Official CMS public-use data for Nathan J. Susnow, 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. Removal of polyps or growths of large bowel using an endoscope with mechanical snare (45385)196 services
2. Moderate sedation services provided by the same physician or other qualified health care professional performing a gastrointestinal endoscopic service that sedation supports, requiring the presence of an independent trained observer to assist in the monito (G0500)124 services
3. Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope (43239)93 services
4. Biopsy of large bowel using a flexible endoscope (45380)52 services
5. Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)41 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 cholesterol66%
• High blood pressure51%
• Arthritis43%
• Ischemic heart disease26%
• Depression21%
• Anxiety20%

Hospitals where Nathan J. Susnow works

Medicare's Facility Affiliation Data lists Nathan J. Susnow 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.

• Boulder Community HealthBoulder, CO · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 060027
• Good Samaritan Medical Center LLCLafayette, CO · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 060116

Practice locations

Addresses where Nathan J. Susnow is enrolled with Medicare (CMS data updated October 2, 2026).

• 1000 W S Boulder Rd, Suite 200Lafayette, CO 80026 (303) 604‑5000

Group practices

Medicare enrollment lists Nathan J. Susnow as a member of this group (CMS data updated October 2, 2026).

• Boulder Valley Gastroenterology Inc.33 clinicians in the group

Specialties

• Gastroenterologyprimary
• Internal Medicinealso

Find other Gastroenterology doctors in Colorado →

Other gastroenterologists in Lafayette

Clinicians with the same Medicare primary specialty in Lafayette, CO — not a recommendation.

• Kerri L. Glassner, DO
• John J. Napierkowski, MD
• Ramu P. Raju, MD
• David M. Nolan, MD
• Wesley B. Kasen, MD
• Poorna Ramachandran, DO
• Andrew L. Samuelson, MD
• David Gatof, MD

All gastroenterologists in Lafayette →

Other clinicians in Boulder Valley Gastroenterology Inc.

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

• Steven T. Chetham, MD
• Amy L. Fayling, MD
• David J. Cristin, MD
• Bibiana Steinbauer, MD
• Sung Min Lee, PA
• Emily S. Marshall, PA

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