Jack Alston Johnson, MD
Emergency Medicine · Mansfield, TX
At a glance
2300 Lone Star Rd, Mansfield, TX 76063-8744
NPPES record updated Nov 6, 2020. Public records can lag behind changes at a practice.
Before you call: a quick checklist
- Are you accepting new patients?
- Do you accept my specific insurance plan?
- Do you provide the service I need at this address?
- Do I need a referral, and what is the earliest appointment?
Insurance participation and appointment availability are not established by these public records.
Medicare & insurance
Insurance participation is not established by these public records. Ask the practice and your insurer about your specific plan and this location.
How to check your coverage
Use your plan’s provider directory or the member-services number on your insurance card. Confirm the clinician, practice address, service, and whether a referral is required. A missing opt-out record does not establish Medicare acceptance.
Check the official Medicare directory ↗Practice location
2300 Lone Star RdMansfield, TX 76063-8744
Additional reported practice locations
1400 N. I-35Ut At Austin Dell Em Residency Program, Suite 2.230
Austin, TX 78701
Phone: 5123247010 108 Denver Trl
Azle, TX 760203614
Phone: 8174448600 2750 Sw Wilshire Blvd
Burleson, TX 760288338
Phone: 8177828000
Education & affiliations
- Medical / professional school
- University Of Texas Medical Branch At Galveston
- Graduation year
- 2017
- CMS specialties
- Emergency Medicine
Practice groups
Reported hospital affiliations
- Texas Health Harris Methodist Hospital Azle Azle, TX
- Texas Health Hospital Mansfield Mansfield, TX
Graduation year does not establish years in practice. A reported affiliation does not establish employment, current admitting privileges, or insurance participation.
Source: CMS National Downloadable File · Published Oct 15, 2026.
Source: CMS Facility Affiliation Data · Published Oct 15, 2026.
Procedures in the public data
Reported activity can help you ask more informed questions about a practice’s services.
No displayed procedure-category record in this release. This does not mean the clinician performs no procedures.
CMS uses a one-year claims window with a reporting lag. Counts cover the Medicare activity included by CMS, not all patients. “1–10” is a published range. Volume is not a quality or outcomes score. Coverage and methodology
Source: CMS Utilization Data · Published Oct 15, 2026.
Find providers with a similar service mix
Compare 2024 published Medicare activity in the same reported specialty, here or in another city.
Industry-reported general payments
No matching general-payment summary in the imported release. This is not a verified zero and does not rule out other payment types or years.
Source: CMS 2025 payments grouped by covered recipient and nature of payments · Published Jun 30, 2026.
Professional details: NPI, taxonomy & registry record
Registry details
- Primary taxonomy
- Emergency Medicine
- Taxonomy code
- 207P00000X
- Enumeration date
- Apr 20, 2017
- Record updated
- Nov 6, 2020
More registry details
- Provider type
- Individual · Type 1
- Reported credentials
- MD
Reported taxonomies and licenses
207P00000X · Primary
License reported: R9985 TX
License numbers and credentials are reported to NPPES; HCPList does not independently verify them.
Practice location
2300 Lone Star RdMansfield, TX 76063-8744
- Phone
- (877) 847-9355
Mailing address
6451 BRENTWOOD STAIR RD STE 200FORT WORTH, TX 761123200
Information may be outdated or incomplete. Confirm details directly with the practice. HCPList is an independent directory and is not affiliated with CMS.
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