Quick answers
- Which hospitals does Monica R. Hallquist work at?
- Medicare's official clinician data lists Monica R. Hallquist at 2 hospitals: Mercy Hospital Jefferson and Mercy Hospital South. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Monica R. Hallquist see patients?
- Medicare's clinician data lists 3 practice locations, including Festus, MO and Lake St Louis, MO. Call before your visit to confirm the address.
- What is Monica R. Hallquist's specialty?
- Medicare lists Nurse Practitioner as the primary specialty.
- Does Monica R. Hallquist accept Medicare assignment?
- Yes. Medicare's clinician data says Monica R. Hallquist accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of 2026-10-02. Ask the office to confirm before your visit.
- What is the phone number for Monica R. Hallquist?
- (636) 937-8675, as listed in official Medicare / NPI Registry data.
- What is Monica R. Hallquist's NPI number?
- 1962051086. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Monica R. Hallquist works
Medicare's Facility Affiliation Data lists Monica R. Hallquist at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Mercy Hospital JeffersonCrystal City, MO · Acute Care Hospital · CCN 260023
- Mercy Hospital SouthSaint Louis, MO · Acute Care Hospital · CCN 260077
Practice locations
Addresses where Monica R. Hallquist is enrolled with Medicare (CMS data updated 2026-10-02).
- 1390 US Hwy 61Festus, MO 63028 (636) 937‑8675
- 1390 US Hwy 61, Suite N3300Festus, MO 63028 (636) 937‑8675
- 200 Brevco Plz, Suite 208Lake St Louis, MO 63367 (636) 561‑9020
Group practices
Medicare enrollment lists Monica R. Hallquist as a member of this group (CMS data updated 2026-10-02).
- Mercy Clinic Gastroenterology LLC67 clinicians in the group
Specialties
- Nurse Practitionerprimary
Other nurse practitioners in Festus
Clinicians with the same Medicare primary specialty in Festus, MO — not a recommendation.
Clinician information
| Medical school | Saint Louis University School Of Medicine |
|---|---|
| Graduation year | 2018 |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1962051086 |
| Corrections | Report an error or suggest an update → |
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
- Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated 2026-10-02, retrieved 2026-10-29
- National Downloadable File (Doctors and Clinicians) — CMS, data updated 2026-10-02, retrieved 2026-10-29
- NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
- Medicare Care Compare — official Medicare tool to look up clinicians