4.2
34 Ratings with 9 written Reviews

Overview based on verified provider data
![]() | ![]() | ![]() | ![]() |
| John M Willis, DO | Eric Harker | Dr. Sarah Laibstain, MD | Dr. Adnan Rafiq, MD |
| Internal Medicine | Internal Medicine | Internal Medicine | Internal Medicine |
| Accepts New Patients | Accepts New Patients | Accepts New Patients | Accepts New Patients |
| 36 Years of Experience | 25 Years of Experience | 18 Years of Experience | |
| No Virtual Visit Option | Virtual Visit Available | Virtual Visit Available | Virtual Visit Available |
| Speaks English | Speaks English | Speaks English, Spanish | Speaks English, Hindi, Urdu |
| Mansfield , TX | Lyons , CO | Dallas , TX | Houston , TX |
| Med School: University Of North Texas Health Science Center | Med School: Duke University School Of Medicine | Med School: New Jersey Medical School | |
Current Profile | View Profile | View Profile | View Profile |
John M Willis holds an active medical license in the state of Texas.
Doctor Of Osteopathy with an active medical license in the state of Texas that expires in 2026.
Completed their residency at Philadelphia College Osteopathic Med Program, Osteo Med Ctr Of Tx-Unthsc/Tco, Internal Medicine, Osteopathic Medical Center Of Texas in 1991, and Mount Clemens General Hospital in 1991.
Graduated from University Of North Texas Health Science Center in 1990, University Of N Tx Hlth Sci Ctr- Tx Coll Osteo Med- Ft Worth Tx in 1990, University Of North Texas Health Science Center Texas College Of Osteopathic Medicine, University Of North in 1990, and University Of North Texas Health Science Center Texas College Of Osteopathic in 1990.
John M Willis' NPI number is 1205891207.










Our provider data is gathered directly from physicians and publicly available databases. Providers who verify their profiles gain the ability to update information, offering additional details about their specialties,education, treated conditions, performed procedures, and accepted insurances.
Reviews on Vitals are submitted by users only. Recognizing the valuable insights these reviews offer into a doctor's reputation, we maintain internal policies and protocols to ensure the quality and accuracy of all reviews. Importantly, providers cannot delete or alter reviews independently. Reviews can only be deleted or changed following an internal assessment by our customer service team.
Your feedback is highly valued and we encourage you to contact our support team should you encounter any issues.