DR. DIRK JACOB VAN LEEUWEN (M.D., PH.D., FAASLD) – Gastroenterology Physician, NPI 1205941309
Gastroenterology Physician
Main info
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Profile Insights
NPPES metrics only — not quality of care.
Provider Addresses for DR. DIRK JACOB VAN LEEUWEN (M.D., PH.D., FAASLD)
1301 Pleasant Valley Rd Ste 401
Owensboro, KY 423039774
Phone: (270) 417-7800
Fax: (270) 417-7809
Type: Location
10000 SE MAIN ST STE 112
PORTLAND, OR 972162441
Phone: (503) 255-3054
Type: Mailing
Dartmouth-Hitchcock Medical Center, 1, Medical Center Drive, Lebanon, Grafton County, New Hampshire, 03756, United States
DARTMOUTH-HITCHCOCK CLINIC
LEBANON, NH 037561000
Phone: (603) 650-3792
Fax: (603) 650-0787
Type: Mailing
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
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Open Payments (CMS)
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This can happen when there are no reportable CMS Open Payments records.
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: 2023-01-22
PECOS data refreshed: 2026-05-27
Medicare revalidation (CMS due date list)
Due date not assigned yet
CMS is tracking 3 Medicare enrollment records; no due dates published yet.
Enrollment records
3
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 |
|---|---|---|---|---|
| I20150310001713 | I | Gastroenterology | ME | TBD |
| I20210212002331 | I | Gastroenterology | KY | TBD |
| I20230122000030 | I | Gastroenterology | WI | 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 |
|---|---|---|---|---|
| 99221 | Initial hospital care with straightforward or low level of medical decision making, per day, if using time, at least 40 minutes | 12 | 12 | $0 |
| 43235 | Diagnostic exam of esophagus, stomach, and/or upper small bowel using a flexible endoscope | 11 | 11 | $0 |
| 43239 | Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope | 11 | 11 | $0 |
| 99203 | New patient office or other outpatient visit, 30-44 minutes | 11 | 11 | $0 |
Insurance plans in this area (ZIP 42303)
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