Gerald Isbell, M.D.
NPI 1093774853 · Gastroenterology Physician · Dallas, TX
Enrolled with Medicare as Practitioner - Gastroenterology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Gerald Isbell, M.D. is a Gastroenterology Physician provider in Dallas, TX (NPI 1093774853).
Provider details
- NPI number
- 1093774853
- Entity type
- Individual
- Primary specialty
- Gastroenterology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- H1289 (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
20 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
2 documented practice locations
- Medicare service volume (vs. specialty peers)25% of score
172 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) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 58 | $122 |
| Biopsy of Esophagus, Stomach, And/Or Upper Small Bowel Using a Flexible Endoscope43239 | 26 | $90 |
| New Patient Office Or Other Outpatient Visit With Moderate Level of Medical Decision Making, If Using Time, 45 Minutes Or More99204 | 22 | $165 |
| Removal of Polyps Or Growths of Large Bowel Using an Endoscope With Mechanical Snare45385 | 21 | $245 |
| Biopsy of Large Bowel Using a Flexible Endoscope45380 | 17 | $110 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 13 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Pantoprazole Sodium | 100 | 50 |
| Ondansetron Hcl | 57 | 54 |
| Linaclotidebrand: Linzess | 51 | 20 |
| Peg3350/Sod Sulf,bicarb,cl/Kclbrand: Gavilyte-G | 35 | 33 |
| Peg3350/Sod Sulf,bicarb,cl/Kclbrand: Peg-3350 and Electrolytes | 25 | 24 |
| Famotidine | 21 | 11 |
| Omeprazole | 19 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$60 across 3 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 (1)
- 7777 Forest LnSuite C-604Dallas, TX 75230-2571Phone: (972) 566-6667Fax: (972) 566-7759
Registry dates
- Enumerated
- 2006-03-21
- Last updated
- 2022-03-25
- Certified
- 2022-03-24
Frequently asked questions
- What is Gerald Isbell's NPI number?
- Gerald Isbell's National Provider Identifier (NPI) is 1093774853, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Gerald Isbell's specialty?
- Gerald Isbell is listed in the NPPES registry with a primary specialty of Gastroenterology Physician (Allopathic & Osteopathic Physicians).
- Where is Gerald Isbell located?
- Gerald Isbell's practice location on file with NPPES is 6201 Harry Hines Blvd, Dallas, TX 75390-2571.
- What is Gerald Isbell's phone number?
- The practice phone number listed in the NPPES registry for Gerald Isbell is (214) 633-5555.
- Does Gerald Isbell accept Medicare?
- Gerald Isbell is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Gerald Isbell's NPI active?
- Yes — Gerald Isbell's NPI (1093774853) is active in the NPPES registry as of the last update on 2022-03-25.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.