DR. KATHERINE NANCY KAMHOLZ (M.D.) – Internal Medicine Physician, NPI 1629062849
Internal Medicine Physician
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Profile Insights
NPPES metrics only — not quality of care.
8,824 INTERNAL MEDICINE in IL
Provider Addresses for DR. KATHERINE NANCY KAMHOLZ (M.D.)
509 W Old Northwest Hwy
Suite 100C
Barrington, IL 600106811
Phone: (847) 756-7360
Fax: (847) 277-7191
Type: Location
Fox River Grove, McHenry County, Illinois, 60021, United States
STE G5A
FOX RIVER GROVE, IL 600211925
Phone: (847) 756-7360
Fax: (847) 462-1003
Type: Mailing
912 NORTHWEST HWY STE 107
FOX RIVER GROVE, IL 600211925
Phone: (847) 462-5100
Type: Location
29373 NETWORK PL
CHICAGO, IL 606731293
Phone: (847) 390-5900
Type: Mailing
West Old Northwest Highway, Barrington, Illinois, 60010, United States
SUITE 100C
BARRINGTON, IL 600106811
Phone: (847) 756-7360
Fax: (847) 277-7191
Type: Location
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
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Open Payments (CMS)
CMS reports 8 Open Payments records for all available years, with a total value of $376.
Total Amount is formed as General ($376) + Research ($0) + Ownership ($0) = $376.
Last reported payment date: 2024-05-22 • Largest payer in this snapshot: AstraZeneca Pharmaceuticals LP ($156).
Total Amount
$376
General + Research + Ownership
Payments
8
Total payment records
General Amount
$376
General payments
Research Amount
$0
Research funding
Ownership Amount
$0
Ownership interests
Ownership Count
0
Ownership records
Last Payment Date
2024-05-22
Latest reported date
Top Companies
Largest payers in this snapshot
| Company | Amount |
|---|---|
| AstraZeneca Pharmaceuticals LP | $156 |
| Stryker Corporation | $154 |
| Corium, LLC | $36 |
| Amgen Inc. | $15 |
| PFIZER INC. | $15 |
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: 2006-03-06
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 |
|---|---|---|---|---|
| I20060306000065 | I | Internal Medicine | IL | 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 | 376 | 205 | $0 |
| 99213 | Established patient office or other outpatient visit, 20-29 minutes | 192 | 130 | $0 |
| G0439 | Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit | 168 | 168 | $0 |
| 99215 | Established patient office or other outpatient visit, 40-54 minutes | 131 | 109 | $0 |
| 93000 | Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report | 98 | 92 | $0 |
Insurance plans in this area (ZIP 60010)
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Group practice members
| Name | Specialty | State |
|---|---|---|
| Cardiovascular Disease (Cardiology), Internal Medicine | IL | |
| Nephrology, Internal Medicine | IL | |
| A N E S T H E S I O L O G Y | IL | |
| Internal Medicine | IL | |
| Clinical Social Worker | IL | |
| - | MN | |
| - | IL | |
| - | IL | |
| Hospitalist, Internal Medicine | IL | |
| Physician Assistant | NC |
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