Thomas Merriman, MD
NPI 1134179054 · Interventional Pain Medicine Physician · Amarillo, TX
Enrolled with Medicare as Practitioner - Anesthesiology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Thomas Merriman, MD is a Interventional Pain Medicine Physician provider in Amarillo, TX (NPI 1134179054).
Provider details
- NPI number
- 1134179054
- Entity type
- Individual
- Primary specialty
- Interventional Pain Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- H5788 (TX)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
20 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
4,692 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) |
|---|---|---|
| Testing for Presence of Drug, By Chemistry Analyzers80307 | 807 | $61 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 774 | $119 |
| Drug Test(s), Definitive, Utilizing (1) Drug Identification Methods Able to Identify Individual Drugs and Distinguish Between Structural Isomers (but Not Necessarily Stereoisomers), Including, But Not Limited to Gc/Ms (any Type, Single Or Tandem) and Lc/MsG0482 | 544 | $194 |
| Visit Complexity Inherent to Evaluation and Management Associated With Medical Care Services That Serve As the Continuing Focal Point for All Needed Health Care Services And/Or With Medical Care Services That Are Part of Ongoing Care Related to a Patient'SG2211 | 470 | $16 |
| Assessment of Emotional Or Behavioral Problems96127 | 425 | $4 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 26 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Hydrocodone/Acetaminophenbrand: Hydrocodone-Acetaminophen | 1,583 | 254 |
| Oxycodone Hcl/Acetaminophenbrand: Oxycodone-Acetaminophen | 262 | 47 |
| Morphine Sulfatebrand: Morphine Sulfate Er | 240 | 34 |
| Oxycodone Hcl | 124 | 24 |
| Gabapentin | 108 | 51 |
| Tramadol Hcl | 105 | 53 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$1,148 across 40 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
Registry dates
- Enumerated
- 2006-05-11
- Last updated
- 2023-08-10
- Certified
- 2023-08-10
Frequently asked questions
- What is Thomas Merriman's NPI number?
- Thomas Merriman's National Provider Identifier (NPI) is 1134179054, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Thomas Merriman's specialty?
- Thomas Merriman is listed in the NPPES registry with a primary specialty of Interventional Pain Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Thomas Merriman located?
- Thomas Merriman's practice location on file with NPPES is 1901 Medi Park Dr Ste 2, Amarillo, TX 79106-2105.
- What is Thomas Merriman's phone number?
- The practice phone number listed in the NPPES registry for Thomas Merriman is (806) 350-7918.
- Does Thomas Merriman accept Medicare?
- Thomas Merriman is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Thomas Merriman's NPI active?
- Yes — Thomas Merriman's NPI (1134179054) is active in the NPPES registry as of the last update on 2023-08-10.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.