North Texas Toxicology PLLC
NPI 1821735143 · Medical Toxicology (Emergency Medicine) Physician · Dallas, TX
Enrolled with Medicare as Part B Supplier - Clinic/Group Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
North Texas Toxicology PLLC is a Medical Toxicology (Emergency Medicine) Physician organization in Dallas, TX (NPI 1821735143).
Provider details
- NPI number
- 1821735143
- Entity type
- Organization
- Primary specialty
- Medical Toxicology (Emergency Medicine) PhysicianAllopathic & Osteopathic Physicians
- Organization subpart
- No
- Authorized official
- Nestor Zenarosa, Authorized Offical(469) 420-5544
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
4 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
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.
Practice location
Mailing address
Registry dates
- Enumerated
- 2022-05-18
- Last updated
- 2025-08-12
- Certified
- 2025-08-12
Frequently asked questions
- What is North Texas Toxicology PLLC's NPI number?
- North Texas Toxicology PLLC's National Provider Identifier (NPI) is 1821735143, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What type of organization is North Texas Toxicology PLLC?
- North Texas Toxicology PLLC is classified in the NPPES registry as Medical Toxicology (Emergency Medicine) Physician (Allopathic & Osteopathic Physicians).
- Where is North Texas Toxicology PLLC located?
- North Texas Toxicology PLLC's practice location on file with NPPES is 4835 Lbj Fwy Ste 900, Dallas, TX 75244-6001.
- What is North Texas Toxicology PLLC's phone number?
- The practice phone number listed in the NPPES registry for North Texas Toxicology PLLC is (469) 420-5544.
- Does North Texas Toxicology PLLC accept Medicare?
- North Texas Toxicology PLLC is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Who is the authorized official for North Texas Toxicology PLLC?
- The authorized official listed on North Texas Toxicology PLLC's NPPES record is Nestor Zenarosa, Authorized Offical. The authorized official registers and maintains the organization's NPI and is not necessarily its owner.
- Is North Texas Toxicology PLLC's NPI active?
- Yes — North Texas Toxicology PLLC's NPI (1821735143) is active in the NPPES registry as of the last update on 2025-08-12.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.