Grant Sizemore, M.D.
Surgery Physician · Dubuque, IA
Grant Sizemore, M.D. is a surgery physician with a practice address in Dubuque, Iowa, and NPI 1942682281, issued on Jun 23, 2015. Check the license on the Iowa Board of Medicine; the Medicare figures below come from public CMS files.
- Name
- Grant Sizemore
- Credential
- M.D.
- Primary taxonomy
- Surgery Physician 208600000X
- Practice location
- 1000 Langworthy St, Dubuque, IA 52001
- Phone
- (563) 584-3450
- Enumerated
- Jun 23, 2015
- Entity
- Type 1 · individual
Also registered at 1000 Langworthy St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Louis Alt, M.D.Otolaryngology Physician1902855778
- Courtney Ambrosy, PA-CPhysician Assistant1457121345
- Sarah ArnoldMedical Physician Assistant1558016113
- Paula Aston, MDNeurology Physician1144286675
- Kala Ave-Lallemant, FNPFamily Nurse Practitioner1235551656
- Martin Bagby, DOFamily Medicine Physician1942269402
Verify Grant Sizemore in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersIowa Board of MedicineCheck the board
- 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS, AOA, NCCPA, AANPNot checked
Industry payments in 2024: $20.62
1 payment, mostly food and beverage; the largest payer was Medtronic, Inc.. The 19,002 providers of this specialty with any payment received $3,758.86 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.
16 surgery physician records list a Dubuque practice address
They are 16 of the 1,468 NPPES records with a Dubuque practice address, and 451 surgery physician records in Iowa.
All 16 in Dubuque → All 451 in Iowa → Every provider in Dubuque →
Other surgery physician records in Iowa
- David Aanestad, MDDavenport, IA1548230832
- Mark Abraham, MDCarroll, IA1760612964
- Josiah AdamsonDes Moines, IA1821981002
- Johan Aerts, D.O.Des Moines, IA1962683243
- Patrick Ahrens, M.D.Council Bluffs, IA1508858028
- Olajumoke Akala, DODes Moines, IA1619723129
- Mai Al Khadem, MDSioux City, IA1134651979
- Matthew Alexander, M.D.Des Moines, IA1760895536
- Donald Anderson, DODes Moines, IA1942714514
- Mark Andrew, MDClarion, IA1174567895
Common questions
What is Grant Sizemore, M.D.'s NPI number?
Grant Sizemore, M.D.'s National Provider Identifier (NPI) is 1942682281, issued on Jun 23, 2015. An NPI identifies a provider in billing; it is not a license.
Where is Grant Sizemore, M.D. located?
The NPPES record lists a practice address at 1000 Langworthy St, Dubuque, IA, 52001. Phone: (563) 584-3450. Providers update this record themselves, so call before visiting.
How can I verify Grant Sizemore, M.D.'s license?
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.
Source: CMS National Plan and Provider Enumeration System (NPPES), loaded Aug 27, 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.
Every figure on PlainDoctor is rendered directly from the federal CMS NPPES registry, Medicare Part D, MIPS, and Open Payments records, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 27, 2026.