Quick answers
- Where does John J. Byun see patients?
- Medicare's clinician data lists 2 practice locations, including McKinney, TX and Plano, TX. Call before your visit to confirm the address.
- What is John J. Byun's specialty?
- Medicare lists Psychiatry as the primary specialty.
- Does John J. Byun accept Medicare assignment?
- Yes. Medicare's clinician data says John J. Byun 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 J. Byun?
- (972) 422-5939, as listed in official Medicare / NPI Registry data.
- What is John J. Byun's NPI number?
- 1932763620. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Practice locations
Addresses where John J. Byun is enrolled with Medicare (CMS data updated 2026-10-02).
- 1515 Heritage Dr, Suite 105McKinney, TX 75069
- 7308 Alma DrPlano, TX 75025 (972) 422‑5939
Group practices
Medicare enrollment lists John J. Byun as a member of this group (CMS data updated 2026-10-02).
- Collin County Mental Health Mental Retardation Center24 clinicians in the group
Specialties
- Psychiatryprimary
Other psychiatrists in McKinney
Clinicians with the same Medicare primary specialty in McKinney, TX — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Boston University School Of Medicine |
| Graduation year | 2019 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1932763620 |
| 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
- 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