Jannel Lee-Allen, MD

Medicare activity in 2024

Official CMS public-use data for Jannel Lee-Allen, 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. Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope (43239)78 services
2. Removal of polyps or growths of large bowel using an endoscope with mechanical snare (45385)78 services
3. Biopsy of large bowel using a flexible endoscope (45380)36 services
4. Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes (99222)30 services
5. Diagnostic exam of esophagus, stomach, and/or upper small bowel using a flexible endoscope (43235)23 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 pressure73%
• High cholesterol71%
• Arthritis52%
• Anxiety44%
• Depression38%
• Diabetes35%

Hospitals where Jannel Lee-Allen works

Medicare's Facility Affiliation Data lists Jannel Lee-Allen 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.

• Edward W Sparrow HospitalLansing, MI · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 230230
• McLaren Greater LansingLansing, MI · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 230167

Practice locations

Addresses where Jannel Lee-Allen is enrolled with Medicare (CMS data updated October 2, 2026).

• 1650 Ramblewood Dr, Suite 100East Lansing, MI 48823 (517) 332‑1200

Group practices

Medicare enrollment lists Jannel Lee-Allen as a member of this group (CMS data updated October 2, 2026).

• Troy Gastroenterology PC49 clinicians in the group

Specialties

• Gastroenterologyprimary

Find other Gastroenterology doctors in Michigan →

Other gastroenterologists in East Lansing

Clinicians with the same Medicare primary specialty in East Lansing, MI — not a recommendation.

• Catherine A. Kerschen, DO
• Tadd K. Hiatt
• Albert B. Ross, MD
• John F. Walling Jr., DO

All gastroenterologists in East Lansing →

Other clinicians in Troy Gastroenterology PC

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

• Nicolette Vanmaldeghem
• Sante D. Bologna, MD
• Leonard G. Quallich Iii, MD
• Callie A. Hart
• Siaka I. Yusuf, MD
• Richard T. Wille, 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