Quick answers
- Which hospitals does Holly R. Ackermann work at?
- Medicare's official clinician data lists Holly R. Ackermann at 1 hospital: Mercy Hospital Jefferson. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Holly R. Ackermann see patients?
- Medicare's clinician data lists 2 practice locations, including Saint Louis, MO. Call before your visit to confirm the address.
- What is Holly R. Ackermann's specialty?
- Medicare lists Nurse Practitioner as the primary specialty.
- Does Holly R. Ackermann accept Medicare assignment?
- Yes. Medicare's clinician data says Holly R. Ackermann 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.
- Does Holly R. Ackermann offer telehealth?
- Medicare's clinician data says Holly R. Ackermann offers telehealth services. Ask the office which visits can be done by video or phone.
- What is the phone number for Holly R. Ackermann?
- (636) 282-0380, as listed in official Medicare / NPI Registry data.
- What is Holly R. Ackermann's NPI number?
- 1003303389. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Holly R. Ackermann works
Medicare's Facility Affiliation Data lists Holly R. Ackermann 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
Practice locations
Addresses where Holly R. Ackermann is enrolled with Medicare (CMS data updated 2026-10-02).
- 5000 Cedar Plaza Pkwy, Suite 300Saint Louis, MO 63128 (636) 282‑0380
- 5034 Griffin RdSaint Louis, MO 63128 (314) 843‑7333
Group practices
Medicare enrollment lists Holly R. Ackermann as a member of these groups (CMS data updated 2026-10-02).
- American Multispecialty Group Inc116 clinicians in the group
- Midwest Medical Practitioners LLC8 clinicians in the group
Specialties
- Nurse Practitionerprimary
Other nurse practitioners in Saint Louis
Clinicians with the same Medicare primary specialty in Saint Louis, MO — not a recommendation.
Clinician information
| Credential | NP |
|---|---|
| Graduation year | 2017 |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1003303389 |
| 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