Dr. Cori Nicole Walker, MD
- Part D claims, 2024
- 126
- Hospital affiliations
- 5
- Industry payments
- $2,643
- Medical groups
- 5
- State license
- 1
- Practice address
- 1000 Fourth Street SW, Mason City, IA 50401
- Practice phone
- Call (641) 428-7000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Walker's professional email, personal email and mobile number
Dmand AI checks each channel through healthcare-specific waterfall enrichment. See what is on file with a free account, with practice phones, licenses and affiliations.
Dr. Cori Nicole Walker is an otolaryngologist in Mason City, Iowa
Dr. Walker practices at MercyOne North Iowa Medical Center in Mason City, Iowa, part of Trinity Health.
Dr. Walker's NPI, 1972129542, was assigned on June 19, 2020. Dr. Walker graduated from University of Chicago, Pritzker School of Medicine in 2020. Dr. Walker holds Iowa license R-11992.
- NPI
- 1972129542NPI Registry (opens in a new tab)
- Medicare PAC ID
- 3678996659
- NPI enumeration date
- June 19, 2020
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (641) 428-7000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 32
- Medical school graduation
- 2020
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Cori Nicole Walker practices at MercyOne North Iowa Medical Center in Mason City, Iowa
Dr. Walker's primary practice is MercyOne North Iowa Medical Center, at 1000 Fourth Street SW, Mason City, IA 50401 in Cerro Gordo County. The practice phone is (641) 428-7000.
- MercyOne North Iowa Medical Center1000 Fourth Street SW, Mason City, IA 50401 · Cerro Gordo CountyPhone(641) 428-7000
Source: Dmand AI Affiliation Data
Dr. Cori Nicole Walker is affiliated with 11 sites of care and 5 medical groups
Dr. Walker's primary practice is MercyOne North Iowa Medical Center in Mason City, Iowa, part of Trinity Health. Dr. Walker is also affiliated with Iowa Specialty Hospital - Belmond. The medical group on file is UnityPoint Clinic. Dmand AI also links Dr. Walker to 3 more hospitals, 5 group practices and clinics, 4 medical groups and 1 hospice, each named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Cori Nicole Walker's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Walker practices, 11 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| MercyOne North Iowa Medical Center | Available with a free account |
| +10 more sites and 4 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
For health IT teams
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Dr. Cori Nicole Walker is one of 105 otolaryngologists in Iowa
Otolaryngology is Dr. Walker's primary specialty in the NPI Registry, under taxonomy code 207Y00000X. Dr. Walker is licensed in Iowa.
Specialties and state licenses
- Otolaryngology, IowaPrimary
Otolaryngologists near Dr. Walker
Counts of otolaryngologists with a Dmand AI profile, by place and practice. Each opens the list.
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. Cori Nicole Walker's patients have a median age of 58
Across all payers, Dmand AI patient panel data puts Dr. Walker's median patient age at 58, with 61% women.
Dr. Walker's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 58
Patient panel by sex, all payers
- Women61%
- Men39%
Source: Dmand AI Patient Panel Data
Dr. Cori Nicole Walker wrote 126 Medicare Part D claims in 2024
In 2024, Dr. Walker wrote 126 Medicare Part D claims for 59 patients. 92% of them were for generic drugs. CMS names the drug for 60 of them, across 3 drugs with 11 or more claims each, at $324 in total drug cost. In 2023, CMS named 44 claims across 2 drugs.
Dr. Walker's Part D claims by kind of drug, 2024
- Generic116 claims92%
- Brand-name and other10 claims8%
Dr. Walker's most prescribed drugs by claims, 2024
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Drug classes CMS tracks in Dr. Walker's Part D claims, 2024
- Opioids23%29 of 126 claims
- Antibiotics15%19 of 126 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 442024: 6036%
Drugs named by CMS: 3 in 2024, 2 in 2023.
Sources: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026; and Medicare Part D Prescribers - by Provider (CMS), 2024 data
Dr. Cori Nicole Walker ranks in the 74th percentile for melanoma (skin cancer) excision in Medicare
Dr. Walker accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS counts 20 procedures of melanoma (skin cancer) excision by Dr. Walker, more than 74% of the clinicians it reports for that procedure.
- Accepts Medicare assignment
- Yes
Where Dr. Walker ranks in Medicare procedure volume
- Melanoma (skin cancer) excision
- 74th percentile20 procedures
CMS ranks each clinician against every clinician it reports for the same procedure category.
Skin biopsy: 1 to 10 procedures (CMS shows small counts as a range)
Sources: Doctors and Clinicians National Downloadable File (CMS); and Doctors and Clinicians Utilization Data (CMS)
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Dr. Cori Nicole Walker received $2,643 in industry payments in 2025
CMS Open Payments shows 15 general payments to Dr. Walker from 3 drug and device companies in 2025. Travel and lodging make up the largest share, 69% of the total. Inspire Medical Systems, Inc. paid the most, $2,608.
General payments to Dr. Walker by kind, 2025 to 2025
- Travel and lodging$1,81469%
- Food and beverage$82931%
Companies that paid Dr. Walker the most, 2025 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Cori Nicole Walker graduated from University of Chicago, Pritzker School of Medicine
Dr. Walker graduated from University of Chicago, Pritzker School of Medicine in 2020.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Cori Nicole Walker's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | Dmand AI Affiliation Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation DataDmand AI Org Hierarchy Data |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel Data |
| Part D prescribing | Medicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab)Medicare Part D Prescribers - by Provider (CMS) (opens in a new tab) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab)Doctors and Clinicians Utilization Data (CMS) (opens in a new tab) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Dr. Cori Nicole Walker
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Dr. Cori Nicole Walker's NPI number?
Dr. Cori Nicole Walker's NPI number is 1972129542. It was assigned on June 19, 2020, and it is active in the NPI Registry.
What kind of doctor is Dr. Cori Nicole Walker?
Dr. Cori Nicole Walker is an otolaryngologist in Mason City, Iowa. The primary specialty in the NPI Registry is Otolaryngology Physician (taxonomy code 207Y00000X).
Where does Dr. Cori Nicole Walker practice?
Dr. Walker practices at 1000 Fourth Street SW, Mason City, IA 50401. Dr. Walker's primary practice is MercyOne North Iowa Medical Center in Mason City, Iowa, part of Trinity Health. Dmand AI also links Dr. Walker to 3 hospitals, 5 group practices and clinics, 4 medical groups and 1 hospice.
What is Dr. Cori Nicole Walker's office phone number?
The practice phone on file for Dr. Walker is (641) 428-7000.
What is Dr. Cori Nicole Walker's medical license number?
Dr. Walker holds Iowa license R-11992.
Which hospitals is Dr. Cori Nicole Walker affiliated with?
Dr. Walker practices at MercyOne North Iowa Medical Center in Mason City, Iowa. Dr. Walker is also affiliated with Iowa Specialty Hospital - Belmond. Dmand AI links Dr. Walker to 3 more hospitals.
What medical group is Dr. Cori Nicole Walker part of?
Dr. Walker is linked to UnityPoint Clinic. Dmand AI links Dr. Walker to 4 more medical groups.
Does Dr. Cori Nicole Walker accept Medicare?
Yes. CMS lists Dr. Walker as accepting Medicare assignment.
Where did Dr. Cori Nicole Walker go to medical school?
Dr. Walker graduated from University of Chicago, Pritzker School of Medicine in 2020.
What drugs does Dr. Cori Nicole Walker prescribe most?
In 2024 Medicare Part D data, Dr. Walker's most prescribed drugs by claims were Oxycodone HCl, Omeprazole and Cephalexin.
Has Dr. Cori Nicole Walker received payments from drug or device companies?
CMS Open Payments shows $2,643 in general payments to Dr. Walker from 3 companies from 2025 to 2025. The largest total came from Inspire Medical Systems, Inc.
How long has Dr. Cori Nicole Walker been practicing?
Dr. Walker graduated from medical school in 2020, 6 years ago.
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