IAN HOLMES (MD) – Gastroenterology Physician, NPI 1073933099
Gastroenterology Physician
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Doctor Profile
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Profile Insights
NPPES metrics only — not quality of care.
1,981 GASTROENTEROLOGY in CA
Provider Addresses for IAN HOLMES (MD)
300 PASTEUR DRIVE
LANE 154
STANFORD, CA 943055133
Phone: (650) 723-6661
Type: Mailing
9300 SE 91st Ave Ste 300
Happy Valley, OR 970863762
Phone: (503) 963-2707
Fax: (503) 963-2802
Type: Location
541 NE 20TH AVE STE 225
PORTLAND, OR 972322895
Phone: (503) 963-2801
Fax: (503) 963-2825
Type: Mailing
1111 NE 99TH AVE STE 301
PORTLAND, OR 972209442
Phone: (503) 963-2707
Fax: (503) 963-2802
Type: Location
847 NE 19TH AVE STE 300
PORTLAND, OR 972322686
Phone: (503) 963-2801
Fax: (503) 963-2825
Type: Mailing
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
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Open Payments (CMS)
CMS reports 5 Open Payments records for all available years, with a total value of $415.
Total Amount is formed as General ($415) + Research ($0) + Ownership ($0) = $415.
Last reported payment date: 2024-09-27 • Largest payer in this snapshot: Boston Scientific Corporation ($415).
Total Amount
$415
General + Research + Ownership
Payments
5
Total payment records
General Amount
$415
General payments
Research Amount
$0
Research funding
Ownership Amount
$0
Ownership interests
Ownership Count
0
Ownership records
Last Payment Date
2024-09-27
Latest reported date
Top Companies
Largest payers in this snapshot
| Company | Amount |
|---|---|
| Boston Scientific Corporation | $415 |
Medicare Enrollment & Revalidation
Source: CMS public data · Not endorsed by CMS ·
Educational use only—not medical, billing, or legal advice.
PECOS enrollment status
Participating (accepts Medicare assignment)
Enrollment effective: 2021-05-10
PECOS data refreshed: 2026-05-27
Medicare revalidation (CMS due date list)
Due date not assigned yet
CMS is tracking this Medicare enrollment for revalidation, but has not published a due date.
Enrollment records
1
Earliest due date
Not assigned (TBD)
CMS data updated
2026-06-01
Revalidation progress
- Medicare enrolled
- On CMS revalidation list
- Due date assigned
- Revalidate in PECOS
CMS enrollment records
| Enrollment ID | Type | Specialty | State | Due date |
|---|---|---|---|---|
| I20210510000110 | I | Gastroenterology | OR | TBD |
What to do next
- No action required while the due date shows TBD.
- Check the CMS Revalidation Lookup Tool periodically — CMS updates the list about every 60 days.
- Do not submit a revalidation application in PECOS until CMS publishes a concrete due date.
Prepare CMS-855 application → · Look up this NPI in PECOS → · Verify on CMS PECOS
Medicare Utilization (FFS)
Source: CMS public data · Not endorsed by CMS · Beneficiary counts under 11 are suppressed in source data ·
Educational use only—not medical, billing, or legal advice.
Top Medicare procedures (2023) · refreshed 2026-05-27
| HCPCS | Description | Services | Beneficiaries | Medicare allowed |
|---|---|---|---|---|
| 88305 | Pathology examination of tissue using a microscope, intermediate complexity | 52 | 26 | $0 |
| 99214 | Established patient office or other outpatient visit, 30-39 minutes | 38 | 27 | $0 |
| 43239 | Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope | 37 | 36 | $0 |
| 45385 | Removal of polyps or growths of large bowel using an endoscope with mechanical snare | 31 | 31 | $0 |
| 45380 | Biopsy of large bowel using a flexible endoscope | 28 | 28 | $0 |
Insurance plans in this area (ZIP 94305)
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Group practice members
| Name | Specialty | State |
|---|---|---|
| Pulmonary Disease | OR | |
| - | OR | |
| O T O L A R Y N G O L O G Y | OR | |
| Internal Medicine, Gastroenterology | OR | |
| Gastroenterology, Internal Medicine | OR | |
| - | OR | |
| - | OR | |
| Qualified Audiologist | OR | |
| Physician Assistant | OR | |
| N E U R O S U R G E R Y | OR |
Reviews
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