Cori Nicole Walker, MD
Otolaryngology Physician · Mason City, IA
Cori Nicole Walker, MD is an otolaryngology physician with a practice address in Mason City, Iowa, and NPI 1972129542, issued on Jun 19, 2020. Check the license (Iowa MD-54872, as entered in NPPES) on the Iowa Board of Medicine; the Medicare figures below come from public CMS files.
- Name
- Cori Nicole Walker
- Credential
- MD
- Primary taxonomy
- Otolaryngology Physician 207Y00000X
- License number
- MD-54872 IA
Self-reported in NPPES; status is on the state search - Practice location
- 250 S Crescent Dr, Mason City, IA 50401
- Phone
- (641) 494-5380
- Enumerated
- Jun 19, 2020
- Record last updated
- Aug 11, 2025
- Fax
- (641) 494-5381
- Medicare enrollment
- Enrolled (PECOS I20250716002608); accepts Medicare assignment
- Medical or professional school
- University Of Chicago, Pritzker School Of Medicine, 2020
- Entity
- Type 1 · individual
8 nearest otolaryngology physician records → All 145 in Iowa → Look up another NPI →
Also registered at 250 S Crescent Dr
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Christopher Adams, M.D.Urology Physician1336301563
- Andrea Anderson, PMHNPPsychiatric/Mental Health Nurse Practitioner1760065023
- Byron Beasley, MDCardiovascular Disease Physician1053398180
- Donald Beitzel, P.A.Physician Assistant1518939982
- Gregory Blank, PAPhysician Assistant1831161736
- Chad Boyer, PA-CPhysician Assistant1265638829
Verify Cori Nicole Walker in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersIowa Board of Medicine
Search for license MD-54872Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
77% fewer Medicare Part D claims than the average otolaryngology physician in 2024
126 Medicare Part D claims for 59 beneficiaries, against an average of 541 among the 8,339 providers of this specialty who prescribed in Part D. 29 claims were for opioids.
Most prescribed
- Oxycodone Hcl27 claims
- Omeprazole22 claims
- Cephalexin11 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 one group practice
- North Iowa Mercy ClinicsMason City, IA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Cori Nicole Walker among 145 otolaryngology physician records in Iowa
Cori Nicole Walker, MD is one of 145 otolaryngology physician records with a practice address in Iowa. 72% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2020, is newer than 76% of them.
- NPI issued2020 · 76% of these records are older, 21% newer
- In a Medicare fileYes · 72% of these records are
- In the CMS Doctors and Clinicians fileYes · 52% of these records are
- Graduated2020 · median 2005 among the 75 with a school on file
- Record last updated2025 · 52% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207Y00000X and a Iowa practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Otolaryngology Physician providers in Iowa
There are 145 otolaryngology physician records in Iowa.
All 145 in Iowa → Every provider in Mason City → Otolaryngology Physician nationwide →
The 8 otolaryngology physician records with the nearest ZIP codes
- Timothy Dettmer, M.D.Mason City, IA 504011275527111
- Henry Diggelmann, M.D.Mason City, IA 504011467610196
- Vishram Jalukar, MDMason City, IA 504011336133818
- Daniel Lee, M.D.Mason City, IA 504011336599679
- Marshall Greiman, MDClive, IA 503251376657957
- Corey Mineck, MDClive, IA 503251669586251
- Matthew Morgan, MDClive, IA 503251538273123
- Jeffrey Smit, M.D.Clive, IA 503251083874853
Common questions
What is Cori Nicole Walker, MD's NPI number?
Cori Nicole Walker, MD's National Provider Identifier (NPI) is 1972129542, issued on Jun 19, 2020. An NPI identifies a provider in billing; it is not a license.
Where is Cori Nicole Walker, MD located?
The NPPES record lists a practice address at 250 S Crescent Dr, Mason City, IA, 50401. Phone: (641) 494-5380. Providers update this record themselves, so call before visiting.
How can I verify Cori Nicole Walker, MD's license?
NPPES lists Iowa license number MD-54872, 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 Cori Nicole Walker, MD prescribe under Medicare Part D?
In 2024, Cori Nicole Walker, MD had 126 Medicare Part D claims for 59 beneficiaries; the average among otolaryngology physician prescribers was 541. 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.