James Regan, MD
NPI 1831182179 · Gastroenterology Physician · Portland, OR
Enrolled with Medicare as Practitioner - Gastroenterology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
James Regan, MD is a Gastroenterology Physician provider in Portland, OR (NPI 1831182179).
Provider details
- NPI number
- 1831182179
- Entity type
- Individual
- Primary specialty
- Gastroenterology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- MD20941 (OR)
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
329 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 | 88 | $38 |
| Removal of Polyps Or Growths of Large Bowel Using an Endoscope With Mechanical Snare45385 | 48 | $236 |
| Biopsy of Esophagus, Stomach, And/Or Upper Small Bowel Using a Flexible Endoscope43239 | 42 | $84 |
| Biopsy of Large Bowel Using a Flexible Endoscope45380 | 39 | $109 |
| New Patient Office Or Other Outpatient Visit With Moderate Level of Medical Decision Making, If Using Time, 45 Minutes Or More99204 | 22 | $170 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 14 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Peg3350/Sod Sulf,bicarb,cl/Kclbrand: Gavilyte-G | 57 | 56 |
| Omeprazole | 55 | 16 |
| Pantoprazole Sodium | 36 | 16 |
| Famotidine | 32 | 11 |
| Peg3350/Sod Sulf,bicarb,cl/Kclbrand: Peg-3350 and Electrolytes | 26 | 26 |
| Sodium, Potassium,mag Sulfatesbrand: Sod Sulf-Potass Sulf-Mag Sulf | 25 | 25 |
| Lipase/Protease/Amylase |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$326 across 5 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)
- 9300 Se 91st Ave Ste 300Happy Valley, OR 97086-3762Phone: (503) 963-2707Fax: (503) 963-2802
Registry dates
- Enumerated
- 2005-08-23
- Last updated
- 2025-12-03
- Certified
- 2025-12-03
Frequently asked questions
- What is James Regan's NPI number?
- James Regan's National Provider Identifier (NPI) is 1831182179, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is James Regan's specialty?
- James Regan is listed in the NPPES registry with a primary specialty of Gastroenterology Physician (Allopathic & Osteopathic Physicians).
- Where is James Regan located?
- James Regan's practice location on file with NPPES is 1111 Ne 99th Ave, Portland, OR 97220-9428.
- What is James Regan's phone number?
- The practice phone number listed in the NPPES registry for James Regan is (503) 963-2707.
- Does James Regan accept Medicare?
- James Regan is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is James Regan's NPI active?
- Yes — James Regan's NPI (1831182179) is active in the NPPES registry as of the last update on 2025-12-03.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.