Gretchen S. Montgomery, MD

Medicare activity in 2024

Official CMS public-use data for Gretchen S. Montgomery, 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. Emergency department visit with high level of medical decision making (99285)636 services
2. Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only (93010)343 services
3. Critical care, first 30-74 minutes (99291)156 services
4. Emergency department visit with moderate level of medical decision making (99284)60 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%
• Arthritis59%
• Diabetes45%
• Ischemic heart disease45%
• Anxiety41%

Hospitals where Gretchen S. Montgomery works

Medicare's Facility Affiliation Data lists Gretchen S. Montgomery 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.

• Merit Health River OaksFlowood, MS · Acute Care Hospital · Medicare rating: 1 of 5 stars · Emergency services: listed by Medicare · CCN 250138
• St Dominic-Jackson Memorial HospitalJackson, MS · Acute Care Hospital · Medicare rating: 2 of 5 stars · Emergency services: listed by Medicare · CCN 250048

Practice locations

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

• 1850 Chadwick DrJackson, MS 39204 (601) 376‑2832
• 969 Lakeland DrJackson, MS 39216 (601) 200‑2000

Group practices

Medicare enrollment lists Gretchen S. Montgomery as a member of these groups (CMS data updated October 2, 2026).

• Jackson HB Medical Services LLC52 clinicians in the group
• Relias Emergency Medicine Specialists of St Dominic LLC18 clinicians in the group

Specialties

• Emergency Medicineprimary

Find other Emergency Medicine doctors in Mississippi →

Other emergency medicine doctors in Jackson

Clinicians with the same Medicare primary specialty in Jackson, MS — not a recommendation.

• Melissa Duncan, MD
• Shunte M. Jones, MD
• Gabrielle N. Snyder, MD
• Bradley A. Burns, MD
• Chester D. Shermer, MD
• Frank H. Redd Iii, MD
• David A. Monaco, MD
• James W. Galbraith, MD

All emergency medicine doctors in Jackson →

Other clinicians in Jackson HB Medical Services LLC

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

• Brian S. Jones, DO
• Ian G. Scott, DO
• David A. Dean, MD
• Nathan Armstrong, MD
• Emily D. Nix, MD
• David Casey Jr., 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