DR. WILLIAM E JR. KARNES (MD) – Gastroenterology Physician, NPI 1881652998
Gastroenterology Physician
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
21,511 INTERNAL MEDICINE in CA
Provider Addresses for DR. WILLIAM E JR. KARNES (MD)
101 THE CITY DR S BLDG 22C
ORANGE, CA 928683201
Phone: (888) 717-4463
Fax: (714) 456-8858
Mailing address matches the actual address.
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
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Open Payments (CMS)
CMS reports 1 Open Payments records for all available years, with a total value of $155.
Total Amount is formed as General ($155) + Research ($0) + Ownership ($0) = $155.
Last reported payment date: 2023-05-09 • Largest payer in this snapshot: Cook Medical LLC ($155).
Total Amount
$155
General + Research + Ownership
Payments
1
Total payment records
General Amount
$155
General payments
Research Amount
$0
Research funding
Ownership Amount
$0
Ownership interests
Ownership Count
0
Ownership records
Last Payment Date
2023-05-09
Latest reported date
Top Companies
Largest payers in this snapshot
| Company | Amount |
|---|---|
| Cook Medical LLC | $155 |
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: 2005-01-03
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 |
|---|---|---|---|---|
| I20050103000461 | I | Internal Medicine | CA | 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 |
|---|---|---|---|---|
| 99214 | Established patient office or other outpatient visit, 30-39 minutes | 165 | 146 | $0 |
| 45385 | Removal of polyps or growths of large bowel using an endoscope with mechanical snare | 150 | 149 | $0 |
| 43239 | Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope | 137 | 135 | $0 |
| 99204 | New patient office or other outpatient visit, 45-59 minutes | 112 | 112 | $0 |
| 45380 | Biopsy of large bowel using a flexible endoscope | 84 | 84 | $0 |
Insurance plans in this area (ZIP 92868)
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Provider's Procedures
| Specialty | Practice State | HCPCS Code | Description | Service Count | Beneficiary Count |
|---|---|---|---|---|---|
| INTERNAL MEDICINE | CA | 45385 | Removal of polyps or growths of large bowel using an endoscope | 56 | 56 |
Group practice members
| Name | Specialty | State |
|---|---|---|
| G A S T R O E N T E R O L O G Y | FL | |
| H E M A T O L O G Y/ O N C O L O G Y | CA | |
| Cardiovascular Disease (Cardiology) | CA | |
| Pulmonary Disease, Critical Care (Intensivists) | MN | |
| Cardiovascular Disease (Cardiology) | CA | |
| Internal Medicine, Endocrinology | CA | |
| Nurse Practitioner | CA | |
| Infectious Disease, Internal Medicine | CA | |
| Nurse Practitioner | CA | |
| Internal Medicine | CA |
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