Timothy Twaddell, MD
NPI 1689610081 · Anesthesiology Physician · Dallas, TX
Enrolled with Medicare as Practitioner - Anesthesiology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Timothy Twaddell, MD is a Anesthesiology Physician provider in Dallas, TX (NPI 1689610081).
Provider details
- NPI number
- 1689610081
- Entity type
- Individual
- Primary specialty
- Anesthesiology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- L6689 (TX)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
19 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
3 documented practice locations
- Medicare service volume (vs. specialty peers)25% of score
335 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
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 .
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) |
|---|---|---|
| Anesthesia for Procedure for Total Knee Joint Replacement01402 | 61 | $237 |
| Continuous Infusion of Anesthetic Agent And/Or Steroid Into Thigh Nerve (femoral Nerve) Through Catheter64448 | 55 | $68 |
| Subsequent Hospital Care With Straightforward Or Low Level of Medical Decision Making, Per Day, If Using Time, at Least 25 Minutes99231 | 55 | $47 |
| Anesthesia for Procedure on Nerves, Muscles, Tendons, and Tissue of Forearm, Wrist, and Hand01810 | 35 | $120 |
| Anesthesia for Total Hip Replacement01214 | 21 | $260 |
| Other Procedure on Nervous System64999 | 21 | $58 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$148 across 2 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Additional practice locations (2)
- 6606 Lbj Fwy Ste 200Dallas, TX 75240-6524Phone: (972) 715-5000Fax: (972) 715-9976
- 1500 Citywest BlvdSte. 300Houston, TX 77042-2300Phone: (713) 620-4000Fax: (713) 458-4229
Registry dates
- Enumerated
- 2006-06-22
- Last updated
- 2022-08-04
- Certified
- 2022-08-04
Frequently asked questions
- What is Timothy Twaddell's NPI number?
- Timothy Twaddell's National Provider Identifier (NPI) is 1689610081, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Timothy Twaddell's specialty?
- Timothy Twaddell is listed in the NPPES registry with a primary specialty of Anesthesiology Physician (Allopathic & Osteopathic Physicians).
- Where is Timothy Twaddell located?
- Timothy Twaddell's practice location on file with NPPES is 12222 Merit Dr Ste 600, Dallas, TX 75251-3294.
- What is Timothy Twaddell's phone number?
- The practice phone number listed in the NPPES registry for Timothy Twaddell is (972) 715-5000.
- Does Timothy Twaddell accept Medicare?
- Timothy Twaddell is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Timothy Twaddell's NPI active?
- Yes — Timothy Twaddell's NPI (1689610081) is active in the NPPES registry as of the last update on 2022-08-04.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.