Jack Johnson, MD
NPI 1881129419 · Emergency Medicine Physician · Mansfield, TX
Enrolled with Medicare as Practitioner - Emergency Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Jack Johnson, MD is a Emergency Medicine Physician provider in Mansfield, TX (NPI 1881129419).
Provider details
- NPI number
- 1881129419
- Entity type
- Individual
- Primary specialty
- Emergency Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- R9985 (TX)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
9 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
4 documented practice locations
- Medicare service volume (vs. specialty peers)28% of score
243 Medicare services, 2024 (ranked within specialty)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Emergency Department Visit With High Level of Medical Decision Making99285 | 122 | $168 |
| Emergency Department Visit With Moderate Level of Medical Decision Making99284 | 55 | $116 |
| Routine Electrocardiogram (ecg) Using at Least 12 Leads With Interpretation and Report Only93010 | 49 | $8 |
| Critical Care, First 30-74 Minutes99291 | 17 | $204 |
Typical Medicare-allowed amounts for these services range $8–$204 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 7 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Ondansetronbrand: Ondansetron Odt | 57 | 56 |
| Hydrocodone/Acetaminophenbrand: Hydrocodone-Acetaminophen | 37 | 35 |
| Cephalexin | 34 | 33 |
| Cyclobenzaprine Hcl | 25 | 25 |
| Amoxicillin/Potassium Clavbrand: Amoxicillin-Clavulanate Potass | 24 | 24 |
| Dicyclomine Hcl | 19 | 19 |
| Tramadol Hcl |
Practice location
Mailing address
Additional practice locations (3)
- 1400 N. I-35Ut at Austin Dell Em Residency Program, Suite 2.230Austin, TX 78701Phone: (512) 324-7010
- 108 Denver TrlAzle, TX 76020-3614Phone: (817) 444-8600
- 2750 Sw Wilshire BlvdBurleson, TX 76028-8338Phone: (817) 782-8000
Registry dates
- Enumerated
- 2017-04-20
- Last updated
- 2020-11-06
- Certified
- 2020-11-06
Frequently asked questions
- What is Jack Johnson's NPI number?
- Jack Johnson's National Provider Identifier (NPI) is 1881129419, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Jack Johnson's specialty?
- Jack Johnson is listed in the NPPES registry with a primary specialty of Emergency Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Jack Johnson located?
- Jack Johnson's practice location on file with NPPES is 2300 Lone Star Rd, Mansfield, TX 76063-8744.
- What is Jack Johnson's phone number?
- The practice phone number listed in the NPPES registry for Jack Johnson is (877) 847-9355.
- Does Jack Johnson accept Medicare?
- Jack Johnson is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Jack Johnson's NPI active?
- Yes — Jack Johnson's NPI (1881129419) is active in the NPPES registry as of the last update on 2020-11-06.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.