David L. Thomas, M.D.
Family Medicine Physician · Marshalltown, IA
David L. Thomas, M.D. is a family medicine physician with a practice address in Marshalltown, Iowa, and NPI 1295716934, issued on Nov 9, 2005. Check the license (Iowa 19812, as entered in NPPES) on the Iowa Board of Medicine; the Medicare figures below come from public CMS files.
- Name
- David L. Thomas
- Credential
- M.D.
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- 19812 IA
Self-reported in NPPES; status is on the state search - Practice location
- 303 Nicholas Dr, Marshalltown, IA 50158
- Phone
- (641) 752-0099
- Enumerated
- Nov 9, 2005
- Record last updated
- Aug 17, 2012 (not updated in 14 years: call before relying on the address or phone)
- Fax
- (641) 752-8736
- Medicaid ID
- 2137026 IA
- Entity
- Type 1 · individual
Also registered at 303 Nicholas Dr
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Ann Jones, PA-CPhysician Assistant1881683811
- Leanne Knoop, PA-CPhysician Assistant1316936511
- India Warren, PA-CPhysician Assistant1790360907
Verify David L. Thomas in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersIowa Board of Medicine
Search for license 19812Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
100% fewer Medicare Part D claims than the average family medicine physician in 2024
12 Medicare Part D claims, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D.
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.
18 family medicine physician records list a practice address in Marshalltown
They are 18 of the 443 NPPES records with a practice address in Marshalltown, and 2,336 family medicine physician records in Iowa.
All 18 in Marshalltown → All 2,336 in Iowa → Every provider in Marshalltown →
Other family medicine physician records in Iowa
- Jennifer Aanestad, M.D.Durant, IA1386649341
- Amjad Abdelhady, MDSioux City, IA1033966700
- Afsana Abdullah, D.O.Bettendorf, IA1760583066
- Raja Ali Abdullah, MDCedar Falls, IA1356101000
- Laura Abels, DOAnkeny, IA1427313527
- Matthew AbendrothDes Moines, IA1972918894
- Mabra Abernathy, M.D.Coralville, IA1316922545
- Jennifer Abler, D.O.Altoona, IA1528159068
- Michael Abouassaly, M.D.West Burlington, IA1184790909
- Safa Abukhalil, M.B.B.SWest Des Moines, IA1982084463
Common questions
What is David L. Thomas, M.D.'s NPI number?
David L. Thomas, M.D.'s National Provider Identifier (NPI) is 1295716934, issued on Nov 9, 2005. An NPI identifies a provider in billing; it is not a license.
Where is David L. Thomas, M.D. located?
The NPPES record lists a practice address at 303 Nicholas Dr, Marshalltown, IA, 50158. Phone: (641) 752-0099. Providers update this record themselves, so call before visiting.
How can I verify David L. Thomas, M.D.'s license?
NPPES lists Iowa license number 19812, as entered by the provider. Search the Iowa Board of Medicine at https://dial.iowa.gov/about-dial/boards-and-commissions/medicine. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does David L. Thomas, M.D. prescribe under Medicare Part D?
In 2024, David L. Thomas, M.D. had 12 Medicare Part D claims; 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.