Michael Keith Ackerman, D.O.
Internal Medicine Physician · Warrenton, VA
Michael Keith Ackerman, D.O. is an internal medicine physician with a practice address in Warrenton, Virginia, and NPI 1174687917, issued on Dec 19, 2006. Check the license (Virginia 0102050260, as entered in NPPES) on the Virginia Department of Health Professions; the Medicare figures below come from public CMS files.
- Name
- Michael Keith Ackerman
- Credential
- D.O.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 0102050260 VA
Self-reported in NPPES; status is on the state search - Practice location
- 555 Hospital Dr, Warrenton, VA 20186
- Phone
- (540) 347-5512
- Enumerated
- Dec 19, 2006
- Record last updated
- Mar 18, 2014 (not updated in 12 years: call before relying on the address or phone)
- Fax
- (540) 341-4646
- Medicaid ID
- 5846838 VA
- Medicare enrollment
- Enrolled (PECOS I20110826000021); accepts Medicare assignment
- Medical or professional school
- University Of New England, College Of Osteo Medicine, 1996
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 3,599 in Virginia → Look up another NPI →
Also registered at 555 Hospital Dr
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Jennifer Ackerman, D.O.Internal Medicine Physician1902958986
- Robert Lin, MDInternal Medicine Physician1265579924
- Norman Mauroner, M.D.Internal Medicine Physician1215030002
Verify Michael Keith Ackerman in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersVirginia Department of Health Professions
Search for license 0102050260Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
2.4 times the Medicare Part D claims of the average internal medicine physician in 2024
7,534 Medicare Part D claims for 500 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 14% of claims. 202 claims were for opioids.
Most prescribed
- Atorvastatin Calcium333 claims
- Amlodipine Besylate295 claims
- Metformin Hcl285 claims
- Levothyroxine Sodium246 claims
- Rosuvastatin Calcium227 claims
- Pantoprazole Sodium207 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
No measured MIPS final score for 2023
CMS assigned the neutral MIPS final score of 75 without scoring Quality, Cost, Promoting Interoperability or Improvement Activities. It is an administrative threshold, so PlainDoctor does not compare it with measured clinicians.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $37.19
2 payments; by number, the most common kind was food and beverage; the largest payer was Dexcom, Inc. The 50,334 providers of this specialty with any payment received $1,303.06 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- Blue Ridge Orthopaedic Associates PCWarrenton, VA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Michael Keith Ackerman among 3,599 internal medicine physician records in Virginia
Michael Keith Ackerman, D.O. is one of 3,599 internal medicine physician records with a practice address in Virginia. 77% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 9% of them.
- NPI issued2006 · 9% of these records are older, 55% newer
- In a Medicare fileYes · 77% of these records are
- In the CMS Doctors and Clinicians fileYes · 62% of these records are
- Graduated1996 · median 2003 among the 2,234 with a school on file
- Record last updated2014 · 53% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a Virginia practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
17 internal medicine physician records list a practice address in Warrenton
They are 17 of the 592 NPPES records with a practice address in Warrenton, and 3,599 internal medicine physician records in Virginia.
All 3,599 in Virginia → Every provider in Warrenton → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Jeffrey Abrams, M.D.Warrenton, VA 201861598768400
- Jennifer Ackerman, D.O.Warrenton, VA 201861902958986
- Zohayr Alshaial, M.D.Warrenton, VA 201861841245537
- Francis Bourgeois, M.D.Warrenton, VA 201861063422830
- Joseph David, M.D.Warrenton, VA 201861851365936
- Larry Heath, MDWarrenton, VA 201861841305331
- Jae Lee, M.D.Warrenton, VA 201861851365720
- Demetrius Maoury, M.D.Warrenton, VA 201861619941796
Common questions
What is Michael Keith Ackerman, D.O.'s NPI number?
Michael Keith Ackerman, D.O.'s National Provider Identifier (NPI) is 1174687917, issued on Dec 19, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Michael Keith Ackerman, D.O. located?
The NPPES record lists a practice address at 555 Hospital Dr, Warrenton, VA, 20186. Phone: (540) 347-5512. Providers update this record themselves, so call before visiting.
How can I verify Michael Keith Ackerman, D.O.'s license?
NPPES lists Virginia license number 0102050260, as entered by the provider. Search the Virginia Department of Health Professions at https://dhp.virginiainteractive.org/lookup/index. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Michael Keith Ackerman, D.O. prescribe under Medicare Part D?
In 2024, Michael Keith Ackerman, D.O. had 7,534 Medicare Part D claims for 500 beneficiaries; the average among internal medicine physician prescribers was 3,176. Part D covers Medicare prescriptions only.
What is Michael Keith Ackerman, D.O.'s MIPS final score?
CMS assigned the neutral MIPS final score of 75 for 2023 without scoring any category, so it is not a measured result.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.