Quick answers
- Which hospitals does John O. Schrader work at?
- Medicare's official clinician data lists John O. Schrader at 5 hospitals: Fairview Regional Medical Center Authority, INTEGRIS Health Enid Hospital, Northwestern Medicine Central Dupage Hospital, Share Medical Center and St Mary's Regional Medical Center. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does John O. Schrader see patients?
- Medicare's clinician data lists 1 practice location in Oklahoma City, OK. Call before your visit to confirm the address.
- What is John O. Schrader's specialty?
- Medicare lists Cardiovascular Disease (Cardiology) as the primary specialty, and also Internal Medicine.
- Does John O. Schrader accept Medicare assignment?
- Yes. Medicare's clinician data says John O. Schrader 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 John O. Schrader?
- (405) 241-3539, as listed in official Medicare / NPI Registry data.
- What is John O. Schrader's NPI number?
- 1710105077. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where John O. Schrader works
Medicare's Facility Affiliation Data lists John O. Schrader at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Fairview Regional Medical Center AuthorityFairview, OK · Critical Access Hospital · CCN 371329
- INTEGRIS Health Enid HospitalEnid, OK · Acute Care Hospital · CCN 370016
- Northwestern Medicine Central Dupage HospitalWinfield, IL · Acute Care Hospital · CCN 140242
- Share Medical CenterAlva, OK · Critical Access Hospital · CCN 371341
- St Mary's Regional Medical CenterEnid, OK · Acute Care Hospital · CCN 370026
Practice locations
Addresses where John O. Schrader is enrolled with Medicare (CMS data updated 2026-10-02).
- 3200 Quail Springs Pkwy, Suite 200Oklahoma City, OK 73134 (405) 241‑3539
Group practices
Medicare enrollment lists John O. Schrader as a member of this group (CMS data updated 2026-10-02).
- Cardiovascular Health Clinic PLLC23 clinicians in the group
Specialties
Find other Cardiovascular Disease (Cardiology) doctors in Oklahoma →
Other cardiologists 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 Nebraska College Of Medicine |
| Graduation year | 1993 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1710105077 |
| 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