Quick answers
- Which hospitals does Mark A. Steichen work at?
- Medicare's official clinician data lists Mark A. Steichen at 1 hospital: Ascension St John Medical Center. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Mark A. Steichen see patients?
- Medicare's clinician data lists 3 practice locations, including Tulsa, OK. Call before your visit to confirm the address.
- What is Mark A. Steichen's specialty?
- Medicare lists Physician Assistant as the primary specialty.
- Does Mark A. Steichen accept Medicare assignment?
- Yes. Medicare's clinician data says Mark A. Steichen 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 Mark A. Steichen?
- (918) 744-2071, as listed in official Medicare / NPI Registry data.
- What is Mark A. Steichen's NPI number?
- 1831460104. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Mark A. Steichen works
Medicare's Facility Affiliation Data lists Mark A. Steichen at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Ascension St John Medical CenterTulsa, OK · Acute Care Hospital · CCN 370114
Practice locations
Addresses where Mark A. Steichen is enrolled with Medicare (CMS data updated 2026-10-02).
- 1705 E 19th StTulsa, OK 74104
- 1923 S Utica AveTulsa, OK 74104 (918) 744‑2071
- 1923 S Utica Ave, Medical Staff OfficeTulsa, OK 74104
Group practices
Medicare enrollment lists Mark A. Steichen as a member of this group (CMS data updated 2026-10-02).
- St. John Physicians, Inc.259 clinicians in the group
Specialties
- Physician Assistantprimary
Other physician assistants in Tulsa
Clinicians with the same Medicare primary specialty in Tulsa, OK — not a recommendation.
Clinician information
| Graduation year | 2011 |
|---|---|
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1831460104 |
| 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