Derek Flack, DO
Family Medicine Physician · White City, OR
Derek Flack, DO is a family medicine physician with a practice address in White City, Oregon, and NPI 1679923098, issued on Jun 16, 2016. Check the license (Oregon DO191255, as entered in NPPES) on the Oregon Medical Board; the Medicare figures below come from public CMS files.
- Name
- Derek Flack
- Credential
- DO
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- DO191255 OR
Self-reported in NPPES; status is on the state search - Practice location
- 2841 Avenue G, White City, OR 97503
- Phone
- (309) 672-4977
- Enumerated
- Jun 16, 2016
- Record last updated
- Jun 20, 2019 (not updated in 7 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20240402004505); accepts Medicare assignment
- Entity
- Type 1 · individual
Also registered at 2841 Avenue G
A shared address usually means a shared clinic or building; it does not show who employs whom.
- John Byers, FNP-C, MSNFamily Nurse Practitioner1013405729
- Jennifer GrahamFamily Nurse Practitioner1942081054
- Rebecca Leggett, APRN-BCFamily Nurse Practitioner1841410198
Verify Derek Flack in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersOregon Medical Board
Search for license DO191255Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
2.5 times the Medicare Part D claims of the average family medicine physician in 2024
9,016 Medicare Part D claims for 857 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. Brand-name drugs were 11% of claims. 576 claims were for opioids.
Most prescribed
- Atorvastatin Calcium519 claims
- Levothyroxine Sodium374 claims
- Gabapentin286 claims
- Losartan Potassium279 claims
- Hydrocodone-Acetaminophen266 claims
- Lisinopril263 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.
Industry payments in 2024: $25.20
1 payment: food and beverage; the largest payer was Tactile Systems Technology Inc. The 55,478 providers of this specialty with any payment received $902.55 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
- University OF Florida Jacksonville Physicians, Inc.Jacksonville, FL
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
9 family medicine physician records list a practice address in White City
They are 9 of the 288 NPPES records with a practice address in White City, and 2,847 family medicine physician records in Oregon.
All 9 in White City → All 2,847 in Oregon → Every provider in White City →
Other family medicine physician records in Oregon
- Roxana Abbott, DOPortland, OR1275799082
- David Abdun-Nur, M.D.Grants Pass, OR1396737847
- Traci Ackron, D.O.Hillsboro, OR1336588789
- Orlando Acosta, MDHood River, OR1912990375
- Michele Adamcak, D.O.Tigard, OR1114097227
- Standley Adamek, DOTigard, OR1144515230
- Harry Adamo, MDSpringfield, OR1235191412
- Allyson AdamsClackamas, OR1043899537
- Caroline Adams, MDGresham, OR1164840815
- Justin Adams, M.D.Medford, OR1760616866
Common questions
What is Derek Flack, DO's NPI number?
Derek Flack, DO's National Provider Identifier (NPI) is 1679923098, issued on Jun 16, 2016. An NPI identifies a provider in billing; it is not a license.
Where is Derek Flack, DO located?
The NPPES record lists a practice address at 2841 Avenue G, White City, OR, 97503. Phone: (309) 672-4977. Providers update this record themselves, so call before visiting.
How can I verify Derek Flack, DO's license?
NPPES lists Oregon license number DO191255, as entered by the provider. Search the Oregon Medical Board at https://www.oregon.gov/OMB/Pages/default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Derek Flack, DO prescribe under Medicare Part D?
In 2024, Derek Flack, DO had 9,016 Medicare Part D claims for 857 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.