Jack Alston Johnson, MD
Emergency Medicine Physician · Mansfield, TX
Jack Alston Johnson, MD is an emergency medicine physician with a practice address in Mansfield, Texas, and NPI 1881129419, issued on Apr 20, 2017. Check the license (Texas R9985, as entered in NPPES) on the Texas Medical Board; the Medicare figures below come from public CMS files.
- Name
- Jack Alston Johnson
- Credential
- MD
- Primary taxonomy
- Emergency Medicine Physician 207P00000X
- License number
- R9985 TX
Self-reported in NPPES; status is on the state search - Practice location
- 2300 Lone Star RD, Mansfield, TX 76063
- Phone
- (877) 847-9355
- Enumerated
- Apr 20, 2017
- Record last updated
- Nov 6, 2020 (not updated in 6 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20191126000290); accepts Medicare assignment
- Medical or professional school
- University Of Texas Medical Branch At Galveston, 2017
- Entity
- Type 1 · individual
8 nearest emergency medicine physician records → All 4,885 in Texas → Look up another NPI →
Also registered at 2300 Lone Star RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Amanda Gaccetta, DOObstetrics & Gynecology Physician1417219197
- Khubaib Gondal, M.D.Internal Medicine Physician1437512753
- Darrein Grimme, PT, DPTPhysical Therapist1649867102
- Kerry Hall, RN, RNFA, CNORRegistered Nurse First Assistant1407398761
- Pedro Pacheco, MDEmergency Medicine Physician1700467875
Verify Jack Alston Johnson in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersTexas Medical Board
Search for license R9985Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
64% more Medicare Part D claims than the average emergency medicine physician in 2024
371 Medicare Part D claims for 199 beneficiaries, against an average of 226 among the 54,106 providers of this specialty who prescribed in Part D. 57 claims were for opioids.
Most prescribed
- Ondansetron Odt57 claims
- Hydrocodone-Acetaminophen37 claims
- Cephalexin34 claims
- Cyclobenzaprine Hcl25 claims
- Amoxicillin-Clavulanate Potass24 claims
- Dicyclomine Hcl19 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Bills Medicare through one group practice
- Texas Medicine Resources, LLPFort Worth, TX
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Jack Alston Johnson among 4,885 emergency medicine physician records in Texas
Jack Alston Johnson, MD is one of 4,885 emergency medicine physician records with a practice address in Texas. 83% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2017, is newer than 74% of them.
- NPI issued2017 · 74% of these records are older, 23% newer
- In a Medicare fileYes · 83% of these records are
- In the CMS Doctors and Clinicians fileYes · 57% of these records are
- Graduated2017 · median 2013 among the 2,779 with a school on file
- Record last updated2020 · 55% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207P00000X and a Texas practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Emergency Medicine Physician providers in Texas
There are 4,885 emergency medicine physician records in Texas.
All 4,885 in Texas → Every provider in Mansfield → Emergency Medicine Physician nationwide →
The 8 emergency medicine physician records with the nearest ZIP codes
- Nicholas Baxter, MDMansfield, TX 760631407541097
- Ashkan Bidgoli, DOMansfield, TX 760631912952227
- Alan Blankenship, MDMansfield, TX 760631528358025
- Shawn Corwin, MDMansfield, TX 760631225246903
- Alexander Deri, MDMansfield, TX 760631366025934
- Leroy Foster, M.D.Mansfield, TX 760631033269899
- Pedro Pacheco, MDMansfield, TX 760631700467875
- Saqib Razaq, M.D.Mansfield, TX 760631417972308
Common questions
What is Jack Alston Johnson, MD's NPI number?
Jack Alston Johnson, MD's National Provider Identifier (NPI) is 1881129419, issued on Apr 20, 2017. An NPI identifies a provider in billing; it is not a license.
Where is Jack Alston Johnson, MD located?
The NPPES record lists a practice address at 2300 Lone Star RD, Mansfield, TX, 76063. Phone: (877) 847-9355. Providers update this record themselves, so call before visiting.
How can I verify Jack Alston Johnson, MD's license?
NPPES lists Texas license number R9985, as entered by the provider. Search the Texas Medical Board at https://profile.tmb.state.tx.us/Search.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Jack Alston Johnson, MD prescribe under Medicare Part D?
In 2024, Jack Alston Johnson, MD had 371 Medicare Part D claims for 199 beneficiaries; the average among emergency medicine physician prescribers was 226. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.