Mark Durkan, MD
NPI 1992801781 · Gastroenterology Physician · Fort Collins, CO
Enrolled with Medicare as Practitioner - Gastroenterology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Mark Durkan, MD is a Gastroenterology Physician provider in Fort Collins, CO (NPI 1992801781).
Provider details
- NPI number
- 1992801781
- Entity type
- Individual
- Primary specialty
- Gastroenterology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 40197 (CO)
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
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
1,512 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) |
|---|---|---|
| Pathology Examination of Tissue Using a Microscope, Intermediate Complexity88305 | 759 | $37 |
| Removal of Polyps Or Growths of Large Bowel Using an Endoscope With Mechanical Snare45385 | 252 | $246 |
| Biopsy of Esophagus, Stomach, And/Or Upper Small Bowel Using a Flexible Endoscope43239 | 118 | $69 |
| Biopsy of Large Bowel Using a Flexible Endoscope45380 | 92 | $96 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes99232 | 49 | $77 |
| Colorectal Cancer Screening; Colonoscopy on Individual at High Risk |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 11 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Sodium Chloride/Nahco3/Kcl/Pegbrand: Peg 3350-Electrolyte | 339 | 332 |
| Omeprazole | 334 | 122 |
| Pantoprazole Sodium | 55 | 20 |
| Peg3350/Sod Sulf,bicarb,cl/Kclbrand: Peg-3350 and Electrolytes | 35 | 35 |
| Sodium, Potassium,mag Sulfatesbrand: Sod Sulf-Potass Sulf-Mag Sulf | 24 | 24 |
| Lipase/Protease/Amylasebrand: Creon | 23 | — |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$216 across 10 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
- 2006-09-16
- Last updated
- 2021-09-22
- Certified
- 2021-09-22
Frequently asked questions
- What is Mark Durkan's NPI number?
- Mark Durkan's National Provider Identifier (NPI) is 1992801781, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mark Durkan's specialty?
- Mark Durkan is listed in the NPPES registry with a primary specialty of Gastroenterology Physician (Allopathic & Osteopathic Physicians).
- Where is Mark Durkan located?
- Mark Durkan's practice location on file with NPPES is 3702 S Timberline Rd, Fort Collins, CO 80525-3624.
- What is Mark Durkan's phone number?
- The practice phone number listed in the NPPES registry for Mark Durkan is (970) 207-9773.
- Does Mark Durkan accept Medicare?
- Mark Durkan is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Mark Durkan's NPI active?
- Yes — Mark Durkan's NPI (1992801781) is active in the NPPES registry as of the last update on 2021-09-22.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.