Clinicians affiliated with Mercy Hospital Jefferson
11 clinicians on file with this group · most practice in St. Louis, MO-IL · PAC ID 1254248271
8 clinicians affiliated with Mercy Hospital Jefferson are in the 2024 Medicare Part B data, 5 of them physicians. Data years with affiliated clinicians: 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021, 2022, 2023, 2024.
Each clinician's exact figures are in their Physician Report, from their page; a specialty's figures in this market are in a Market Comparison. View sample report · Already purchased? Open your report
Affiliated clinicians by specialty, 2024
All specialties · Emergency Medicine (5) · Nurse Practitioner (2) · Chiropractic (1)
Specialty links go to the specialty in St. Louis, MO-IL.
Clinicians affiliated with Mercy Hospital Jefferson, 2024
Alphabetical by last name; 8.
| Name | Specialty | City |
|---|---|---|
| Gavin L Flentge, AGACNP-BC | Nurse Practitioner | Perryville, MO |
| Debra K Gremminger, FNP | Nurse Practitioner | Crystal City, MO |
| Nicole V Messenger, MD | Emergency Medicine | Saint Louis, MO |
| Joshua R Nast, DO | Emergency Medicine | Saint Louis, MO |
| Stephen W Orr, D.C. | Chiropractic | Farmington, MO |
| Michael J Pajor, MD | Emergency Medicine | Festus, MO |
| Alexander G Parker, MD | Emergency Medicine | Festus, MO |
| Jeffrey S Ruggeri, MD | Emergency Medicine | Saint Louis, MO |
Practice locations
Listed practice locations in Missouri.
Source: CMS Doctors and Clinicians National Downloadable File, snapshot October 2, 2026.
Membership comes from the CMS Doctors and Clinicians file. CMS does not publish an end-of-year archive of it, so the current snapshot is applied to every data year. A clinician affiliated with several groups or hospitals appears on each of their pages. How group pages are built · Limitations