JOHN J BYUN MD
NPI 1932763620
Psychiatry & Neurology - Psychiatry in Mckinney, TX
About John J Byun Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
JOHN J BYUN MD (NPI 1932763620) is an individual psychiatry provider in Mckinney, Texas, licensed in Texas (T4716) and active in the NPI registry since April 2019. He is enrolled in Medicare PECOS and is a graduate of Boston University School Of Medicine (2019).
NPPES Registry Identity
Specialties & Licenses
Accepted Insurance
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare and accepts Medicare assignment
John J Byun Md is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.
Medicare Billing Reassignments
6Medicare enrollment records show John Byun reassigns Medicare billing to 6 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Mckinney, TX 75069
- Reassigned Medicare billing, Texas enrollment
- 92 clinicians in this Medicare group
Lufkin, TX 75901
- Reassigned Medicare billing, Texas enrollment
- 150 clinicians in this Medicare group
Round Rock, TX 78664
- Reassigned Medicare billing, Texas enrollment
- 216 clinicians in this Medicare group
Conroe, TX 77304
- Reassigned Medicare billing, Texas enrollment
- 84 clinicians in this Medicare group
Lubbock, TX 79404
- Reassigned Medicare billing, Texas enrollment
- 61 clinicians in this Medicare group
Lytle, TX 78052
- Reassigned Medicare billing, Texas enrollment
- 152 clinicians in this Medicare group
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 75069 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Other Providers at the Same Location NPPES 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
MCKINNEY, TX 75069
Frequently Asked Questions NPPES & CMS
Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.
What is John Byun's NPI number?
The NPI number for John Byun is 1932763620. It was assigned to this individual provider in the NPPES registry on April 28, 2019.
Where is John Byun located?
John Byun practices at 1515 Heritage Dr, Mckinney, TX 75069. The listed phone number is (972) 562-0190.
What is John Byun's specialty?
The primary specialty registered for this NPI is Psychiatry & Neurology, specializing in Psychiatry, with taxonomy code 2084P0800X.
Is John Byun enrolled in Medicare?
Yes. John Byun is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.
Which organizations bill Medicare for John Byun's services?
According to the CMS Revalidation Reassignment List (October 2026 release), John Byun reassigns Medicare benefits to 6 organizations: Collin County Mental Health Mental Retardation Center (Mckinney, TX), Burke Center (Lufkin, TX), Bluebonnet Trails Community Mhmr Center (Round Rock, TX), Tri-County Behavioral Healthcare (Conroe, TX), Lubbock Regional Mhmr Center (Lubbock, TX) and 1 more organization, listed in the Medicare section above. Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for John Byun's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does John Byun accept?
Health plans from Blue Cross and Blue Shield of Texas, Cigna Healthcare, Molina Healthcare, Oscar Insurance Company and UnitedHealthcare list John Byun as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.
When was this NPI record last updated?
The NPPES record for John Byun was last updated on March 10, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 7 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.
# John J Byun, MD · NPI 1932763620
Psychiatry physician in Mckinney, Texas. Individual provider, active in the CMS NPPES registry since April 28, 2019.
## Identity
- **NPI:** 1932763620 (Entity type: Individual)
- **Enumerated:** April 28, 2019
- **Primary specialty:** Psychiatry & Neurology - Psychiatry · taxonomy 2084P0800X
- **State license:** T4716 (Texas)
- **Sole proprietor:** No
## Practice location
- **Address:** 1515 HERITAGE DR, Mckinney, TX 75069-3256
- **Phone:** (972) 562-0190
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** 6 organizations under Medicare reassignment (form CMS-855R): Collin County Mental Health Mental Retardation Center (NPI 1871576835, Mckinney, TX); Burke Center (NPI 1396792420, Lufkin, TX); Bluebonnet Trails Community Mhmr Center (NPI 1730135864, Round Rock, TX); Tri-County Behavioral Healthcare (NPI 1851333074, Conroe, TX); Lubbock Regional Mhmr Center (NPI 1992708705, Lubbock, TX); and 1 more · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Boston University School Of Medicine, class of 2019
## Record status
- **NPPES last updated:** March 10, 2026
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Source: [NPI Profile](https://npiprofile.com/npi/1932763620) · Data from the CMS NPPES public registry.