David Clark Flack, D.O.
Family Medicine Physician · Winchester, VA
David Clark Flack, D.O. is a family medicine physician with a practice address in Winchester, Virginia, and NPI 1730384298, issued on Jun 15, 2007. Check the license (Virginia 0102202200, as entered in NPPES) on the Virginia Department of Health Professions; the Medicare figures below come from public CMS files.
- Name
- David Clark Flack
- Credential
- D.O.
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- 0102202200 VA
Self-reported in NPPES; status is on the state search - Practice location
- 104 Selma Dr, Winchester, VA 22601
- Phone
- (540) 678-2800
- Enumerated
- Jun 15, 2007
- Record last updated
- Feb 27, 2021 (not updated in 5 years: call before relying on the address or phone)
- Fax
- (540) 678-2859
- Medicaid ID
- 3810015242 WV
- Medicare enrollment
- Enrolled (PECOS I20090728000190); accepts Medicare assignment
- Medical or professional school
- West Virginia School Of Osteopathic Medicine, 2006
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 4,137 in Virginia → Look up another NPI →
Also registered at 104 Selma Dr
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify David Clark Flack in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersVirginia Department of Health Professions
Search for license 0102202200Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
3.4 times the Medicare Part D claims of the average family medicine physician in 2024
12,147 Medicare Part D claims for 879 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. Brand-name drugs were 7% of claims. 567 claims were for opioids.
Most prescribed
- Atorvastatin Calcium694 claims
- Amlodipine Besylate486 claims
- Lisinopril416 claims
- Rosuvastatin Calcium323 claims
- Levothyroxine Sodium321 claims
- Losartan Potassium303 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.
Bills Medicare through 2 group practices
- Legacy Healthcare Services IncBurke, VA
- Selma Medical Assoc IncWinchester, VA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
David Clark Flack among 4,137 family medicine physician records in Virginia
David Clark Flack, D.O. is one of 4,137 family medicine physician records with a practice address in Virginia. 74% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2007, is newer than 50% of them.
- NPI issued2007 · 50% of these records are older, 41% newer
- In a Medicare fileYes · 74% of these records are
- In the CMS Doctors and Clinicians fileYes · 59% of these records are
- Graduated2006 · median 2004 among the 2,426 with a school on file
- Record last updated2021 · 54% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207Q00000X and a Virginia practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
56 family medicine physician records list a practice address in Winchester
They are 56 of the 2,762 NPPES records with a practice address in Winchester, and 4,137 family medicine physician records in Virginia.
All 4,137 in Virginia → Every provider in Winchester → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- William Bender, M.D.Winchester, VA 226011487624276
- Jessica Byrd, M.D.Winchester, VA 226011639175391
- Kevin Culbert, DOWinchester, VA 226011942294129
- Su Fairchild, MDWinchester, VA 226011861488074
- Harry Gustin, M.D.Winchester, VA 226011639149438
- Stephanie Hoefle, MDWinchester, VA 226011073509220
- Patricia HouserWinchester, VA 226011932179322
- Linda Luong, M.D.Winchester, VA 226011689647257
Common questions
What is David Clark Flack, D.O.'s NPI number?
David Clark Flack, D.O.'s National Provider Identifier (NPI) is 1730384298, issued on Jun 15, 2007. An NPI identifies a provider in billing; it is not a license.
Where is David Clark Flack, D.O. located?
The NPPES record lists a practice address at 104 Selma Dr, Winchester, VA, 22601. Phone: (540) 678-2800. Providers update this record themselves, so call before visiting.
How can I verify David Clark Flack, D.O.'s license?
NPPES lists Virginia license number 0102202200, 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 David Clark Flack, D.O. prescribe under Medicare Part D?
In 2024, David Clark Flack, D.O. had 12,147 Medicare Part D claims for 879 beneficiaries; the average among family medicine physician prescribers was 3,544. Part D covers Medicare prescriptions only.
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.