Quick answers
- Which hospitals does Mark D. Erhardt work at?
- Medicare's official clinician data lists Mark D. Erhardt at 2 hospitals: Ascension St John Jane Phillips and Ascension St John Medical Center. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Mark D. Erhardt see patients?
- Medicare's clinician data lists 1 practice location in Bartlesville, OK. Call before your visit to confirm the address.
- What is Mark D. Erhardt's specialty?
- Medicare lists Family Practice as the primary specialty.
- Does Mark D. Erhardt accept Medicare assignment?
- Yes. Medicare's clinician data says Mark D. Erhardt 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 Mark D. Erhardt offer telehealth?
- Medicare's clinician data says Mark D. Erhardt offers telehealth services. Ask the office which visits can be done by video or phone.
- What is the phone number for Mark D. Erhardt?
- (918) 331-2330, as listed in official Medicare / NPI Registry data.
- What is Mark D. Erhardt's NPI number?
- 1770546640. 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 D. Erhardt works
Medicare's Facility Affiliation Data lists Mark D. Erhardt 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 Jane PhillipsBartlesville, OK · Acute Care Hospital · CCN 370018
- Ascension St John Medical CenterTulsa, OK · Acute Care Hospital · CCN 370114
Practice locations
Addresses where Mark D. Erhardt is enrolled with Medicare (CMS data updated 2026-10-02).
- 510 SE Delaware AveBartlesville, OK 74003 (918) 331‑2330
Group practices
Medicare enrollment lists Mark D. Erhardt as a member of this group (CMS data updated 2026-10-02).
- Primary Care Associates PC5 clinicians in the group
Specialties
- Family Practiceprimary
Other family doctors in Bartlesville
Clinicians with the same Medicare primary specialty in Bartlesville, OK — not a recommendation.
Clinician information
| Credential | DO |
|---|---|
| Medical school | Lake Erie College Of Osteopathic Medicine, Erie |
| Graduation year | 1993 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1770546640 |
| 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