DR. MICHAEL KEITH ACKERMAN (D.O.) – Internal Medicine Physician, NPI 1174687917
Internal Medicine Physician
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
4,930 INTERNAL MEDICINE in VA
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Provider Addresses for DR. MICHAEL KEITH ACKERMAN (D.O.)
52, West Shirley Avenue, Warrenton, Fauquier County, Virginia, 20186, United States
WARRENTON, VA 20186
Phone: (540) 347-9220
Fax: (540) 347-0492
Type: Mailing
555, Hospital Drive, Warrenton, Fauquier County, Virginia, 20186, United States
WARRENTON, VA 201863028
Phone: (540) 347-5512
Fax: (540) 341-4646
Type: Location
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
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Open Payments (CMS)
CMS reports 3 Open Payments records for all available years, with a total value of $53.
Total Amount is formed as General ($53) + Research ($0) + Ownership ($0) = $53.
Last reported payment date: 2024-10-29 • Largest payer in this snapshot: Dexcom, Inc. ($24).
Total Amount
$53
General + Research + Ownership
Payments
3
Total payment records
General Amount
$53
General payments
Research Amount
$0
Research funding
Ownership Amount
$0
Ownership interests
Ownership Count
0
Ownership records
Last Payment Date
2024-10-29
Latest reported date
Top Companies
Largest payers in this snapshot
| Company | Amount |
|---|---|
| Dexcom, Inc. | $24 |
| Novartis Pharmaceuticals Corporation | $16 |
| Medtronic, Inc. | $14 |
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: 2011-08-26
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 |
|---|---|---|---|---|
| I20110826000021 | I | Internal Medicine | VA | 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 | 525 | 296 | $0 |
| 99213 | Established patient office or other outpatient visit, 20-29 minutes | 141 | 125 | $0 |
| G0439 | Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit | 91 | 91 | $0 |
| 99215 | Established patient office or other outpatient visit, 40-54 minutes | 33 | 33 | $0 |
| G0008 | Administration of influenza virus vaccine | 33 | 33 | $0 |
Insurance plans in this area (ZIP 20186)
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Provider's Procedures
| Specialty | Practice State | HCPCS Code | Description | Service Count | Beneficiary Count |
|---|---|---|---|---|---|
| INTERNAL MEDICINE | VA | 81002 | Urinalysis, manual test | 52 | 45 |
Group practice members
| Name | Specialty | State |
|---|---|---|
| Interventional Pain Management, Anesthesiology | VA | |
| Physical Therapist In Private Practice | VA | |
| P O D I A T R Y | VA | |
| - | VA | |
| Physical Therapist In Private Practice | VA | |
| Sports Medicine, Orthopedic Surgery | VA | |
| Orthopedic Surgery | VA | |
| Physical Therapist In Private Practice | MD | |
| Physician Assistant | MD | |
| Orthopedic Surgery | VA |
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