Quick answers
- Which hospitals does Ammar Nasir work at?
- Medicare's official clinician data lists Ammar Nasir at 5 hospitals: Mercy Hospital St Louis, SSM Health Depaul Hospital St Louis, SSM Health Saint Louis University Hospital, SSM St Joseph Health Center and SSM St Joseph Hospital West. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Ammar Nasir see patients?
- Medicare's clinician data lists 1 practice location in Lake St Louis, MO. Call before your visit to confirm the address.
- What is Ammar Nasir's specialty?
- Medicare lists Cardiovascular Disease (Cardiology) as the primary specialty, and also Internal Medicine.
- Does Ammar Nasir accept Medicare assignment?
- Yes. Medicare's clinician data says Ammar Nasir 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 Ammar Nasir?
- (636) 625-2662, as listed in official Medicare / NPI Registry data.
- What is Ammar Nasir's NPI number?
- 1427212299. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Ammar Nasir works
Medicare's Facility Affiliation Data lists Ammar Nasir at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Mercy Hospital St LouisSaint Louis, MO · Acute Care Hospital · CCN 260020
- SSM Health Depaul Hospital St LouisBridgeton, MO · Acute Care Hospital · CCN 260104
- SSM Health Saint Louis University HospitalSaint Louis, MO · Acute Care Hospital · CCN 260105
- SSM St Joseph Health CenterSaint Charles, MO · Acute Care Hospital · CCN 260005
- SSM St Joseph Hospital WestLake Saint Louis, MO · Acute Care Hospital · CCN 260200
Practice locations
Addresses where Ammar Nasir is enrolled with Medicare (CMS data updated 2026-10-02).
- 300 Medical Plz, Suite 150Lake St Louis, MO 63367 (636) 625‑2662
Group practices
Medicare enrollment lists Ammar Nasir as a member of this group (CMS data updated 2026-10-02).
- SSM Medical Group Inc568 clinicians in the group
Specialties
Find other Cardiovascular Disease (Cardiology) doctors in Missouri →
Other cardiologists in Missouri
Clinicians with the same Medicare primary specialty in Missouri — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 2005 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1427212299 |
| 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