Gary Roark, M.D.
NPI 1003896531 · Specialist · Abilene, TX
Enrolled with Medicare as Practitioner - Gastroenterology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Gary Roark, M.D. is a Specialist provider in Abilene, TX (NPI 1003896531).
Provider details
- NPI number
- 1003896531
- Entity type
- Individual
- Primary specialty
- SpecialistOther Service Providers
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- E4638 (TX)
Specialties & taxonomies
Other Service Providers
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
1,039 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) |
|---|---|---|
| Biopsy of Esophagus, Stomach, And/Or Upper Small Bowel Using a Flexible Endoscope43239 | 217 | $103 |
| Removal of Polyps Or Growths of Large Bowel Using an Endoscope With Mechanical Snare45385 | 167 | $231 |
| Colorectal Cancer Screening; Colonoscopy on Individual at High RiskG0105 | 159 | $164 |
| Dilation of Esophagus43450 | 107 | $37 |
| New Patient Office Or Other Outpatient Visit With Low Level of Medical Decision Making, If Using Time, 30 Minutes Or More99203 | 80 | $102 |
| Colorectal Cancer Screening; Colonoscopy on Individual Not Meeting Criteria for High Risk |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 16 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Pantoprazole Sodium | 468 | 142 |
| Sodium, Potassium,mag Sulfatesbrand: Sod Sulf-Potass Sulf-Mag Sulf | 214 | 213 |
| Sodium Chloride/Nahco3/Kcl/Pegbrand: Peg 3350-Electrolyte | 199 | 199 |
| Omeprazole | 82 | 24 |
| Peg3350/Sod Sulf,bicarb,cl/Kclbrand: Gavilyte-C | 40 | 38 |
| Dicyclomine Hcl | 34 | 15 |
| Sucralfate |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$1,129 across 65 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
- 2006-01-19
- Last updated
- 2015-03-24
Frequently asked questions
- What is Gary Roark's NPI number?
- Gary Roark's National Provider Identifier (NPI) is 1003896531, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Gary Roark's specialty?
- Gary Roark is listed in the NPPES registry with a primary specialty of Specialist (Other Service Providers).
- Where is Gary Roark located?
- Gary Roark's practice location on file with NPPES is 1249 Ambler Ave, Abilene, TX 79601-2351.
- What is Gary Roark's phone number?
- The practice phone number listed in the NPPES registry for Gary Roark is (325) 677-2626.
- Does Gary Roark accept Medicare?
- Gary Roark is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Gary Roark's NPI active?
- Yes — Gary Roark's NPI (1003896531) is active in the NPPES registry as of the last update on 2015-03-24.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.