MARK D. HORNEFFER (MD) – Internal Medicine Physician, NPI 1710928965
Internal Medicine Physician
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
2,941 INTERNAL MEDICINE in WI
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Provider Addresses for MARK D. HORNEFFER (MD)
Columbia College of Nursing, 4425, North Port Washington Road, Grover Heights, Glendale, Milwaukee County, Wisconsin, 53212, United States
ATTN: CSMCP CLINIC CREDENTIALING
GLENDALE, WI 532121082
Phone: (414) 464-4460
Type: Mailing
10950, West Capitol Drive, Wauwatosa, Milwaukee County, Wisconsin, 53222, United States
WAUWATOSA, WI 532221110
Phone: (414) 464-4460
Type: Location
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
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Open Payments (CMS)
No Open Payments data available for this provider.
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: 2005-07-25
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 |
|---|---|---|---|---|
| I20050725000295 | I | Internal Medicine | 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 |
|---|---|---|---|---|
| 99214 | Established patient office or other outpatient visit, 30-39 minutes | 318 | 155 | $0 |
| G0439 | Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit | 140 | 140 | $0 |
| 99215 | Established patient office or other outpatient visit, 40-54 minutes | 90 | 61 | $0 |
| 99213 | Established patient office or other outpatient visit, 20-29 minutes | 30 | 26 | $0 |
| 93010 | Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only | 16 | 15 | $0 |
Insurance plans in this area (ZIP 53212)
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Provider's Procedures
| Specialty | Practice State | HCPCS Code | Description | Service Count | Beneficiary Count |
|---|---|---|---|---|---|
| INTERNAL MEDICINE | WI | 93010 | Routine electrocardiogram (EKG) using at least 12 leads with interpretation and report | 14 | 14 |
Group practice members
| Name | Specialty | State |
|---|---|---|
| - | WI | |
| Diagnostic Radiology | WI | |
| D E R M A T O L O G Y | WI | |
| - | WI | |
| - | WI | |
| - | WI | |
| - | WI | |
| - | WI | |
| Mental Health Counselor | WI | |
| - | WI |
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