Quick answers
- Which hospitals does Michael R. Hahn Ii work at?
- Medicare's official clinician data lists Michael R. Hahn Ii at 5 hospitals: Duncan Regional Hospital, Inc, Memorial Health, SSM Health St Anthony Hospital - Midwest, SSM Health St Anthony Hospital - Oklahoma City and SSM Health St Anthony Hospital - Shawnee. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Michael R. Hahn Ii see patients?
- Medicare's clinician data lists 1 practice location in Oklahoma City, OK. Call before your visit to confirm the address.
- What is Michael R. Hahn Ii's specialty?
- Medicare lists Neurosurgery as the primary specialty.
- Does Michael R. Hahn Ii accept Medicare assignment?
- Yes. Medicare's clinician data says Michael R. Hahn Ii 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 Michael R. Hahn Ii?
- (405) 231-3000, as listed in official Medicare / NPI Registry data.
- What is Michael R. Hahn Ii's NPI number?
- 1891784237. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Michael R. Hahn Ii works
Medicare's Facility Affiliation Data lists Michael R. Hahn Ii at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Duncan Regional Hospital, IncDuncan, OK · Acute Care Hospital · CCN 370023
- Memorial HealthLawton, OK · Acute Care Hospital · CCN 370056
- SSM Health St Anthony Hospital - MidwestMidwest City, OK · Acute Care Hospital · CCN 370094
- SSM Health St Anthony Hospital - Oklahoma CityOklahoma City, OK · Acute Care Hospital · CCN 370037
- SSM Health St Anthony Hospital - ShawneeShawnee, OK · Acute Care Hospital · CCN 370149
Practice locations
Addresses where Michael R. Hahn Ii is enrolled with Medicare (CMS data updated 2026-10-02).
- 608 NW 9th St, Suite 1100Oklahoma City, OK 73102 (405) 231‑3000
Group practices
Medicare enrollment lists Michael R. Hahn Ii as a member of this group (CMS data updated 2026-10-02).
- Saints Medical Group, LLC435 clinicians in the group
Specialties
- Neurosurgeryprimary
Other neurosurgeons in Oklahoma City
Clinicians with the same Medicare primary specialty in Oklahoma City, OK — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | University Of Oklahoma College Of Medicine |
| Graduation year | 1992 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1891784237 |
| 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