Ian Holmes, MD
NPI 1073933099 · Gastroenterology Physician · Portland, OR
Enrolled with Medicare as Practitioner - Gastroenterology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Ian Holmes, MD is a Gastroenterology Physician provider in Portland, OR (NPI 1073933099).
Provider details
- NPI number
- 1073933099
- Entity type
- Individual
- Primary specialty
- Gastroenterology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- MD204232 (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
12 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
162 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 | 30 | $38 |
| Biopsy of Esophagus, Stomach, And/Or Upper Small Bowel Using a Flexible Endoscope43239 | 29 | $87 |
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 25 | $185 |
| Removal of Polyps Or Growths of Large Bowel Using an Endoscope With Mechanical Snare45385 | 19 | $230 |
| New Patient Office Or Other Outpatient Visit With Moderate Level of Medical Decision Making, If Using Time, 45 Minutes Or More99204 | 19 | $170 |
| Ultrasound Exam of Esophagus, Stomach, And/Or Upper Small Bowel Using a Flexible Endoscope |
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 |
|---|---|---|
| Omeprazole | 70 | 30 |
| Peg3350/Sod Sulf,bicarb,cl/Kclbrand: Gavilyte-G | 38 | 37 |
| Famotidine | 21 | — |
| Peg3350/Sod Sulf,bicarb,cl/Kclbrand: Peg-3350 and Electrolytes | 20 | 20 |
| Lipase/Protease/Amylasebrand: Creon | 18 | — |
| Pantoprazole Sodium | 15 | — |
| Amoxicillin/Potassium Clav |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$415 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
- 2014-04-17
- Last updated
- 2025-12-16
- Certified
- 2025-12-16
Frequently asked questions
- What is Ian Holmes's NPI number?
- Ian Holmes's National Provider Identifier (NPI) is 1073933099, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Ian Holmes's specialty?
- Ian Holmes is listed in the NPPES registry with a primary specialty of Gastroenterology Physician (Allopathic & Osteopathic Physicians).
- Where is Ian Holmes located?
- Ian Holmes's practice location on file with NPPES is 1111 Ne 99th Ave Ste 301, Portland, OR 97220-9442.
- What is Ian Holmes's phone number?
- The practice phone number listed in the NPPES registry for Ian Holmes is (503) 963-2707.
- Does Ian Holmes accept Medicare?
- Ian Holmes is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Ian Holmes's NPI active?
- Yes — Ian Holmes's NPI (1073933099) is active in the NPPES registry as of the last update on 2025-12-16.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.