Dr. Charles G. Kooiker, DO
- Medicare services, 2024
- 198
- Medicare patients, 2024
- 195
- Part D claims, 2024
- 137
- Hospital affiliations
- 1
- Medical group
- 1
- Practice address
- 855 Mankato Avenue, Winona, MN 55987
- Practice phone
- Call (507) 454-3650
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Kooiker'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. Charles G. Kooiker is an emergency medicine physician in Winona, Minnesota
Dr. Kooiker practices at Winona Health in Winona, Minnesota, part of Winona Health.
Dr. Kooiker's NPI, 1477092948, was assigned on February 17, 2017. Dr. Kooiker graduated from Des Moines University of Osteopathic Medicine and Health Sciences in 2017. Dr. Kooiker holds Minnesota license 69217.
- NPI
- 1477092948NPI Registry (opens in a new tab)
- Medicare PAC ID
- 0840564423
- NPI enumeration date
- February 17, 2017
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (507) 454-3650
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 35
- Medical school graduation
- 2017
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Charles G. Kooiker practices at Winona Health in Winona, Minnesota
Dr. Kooiker's primary practice is Winona Health, at 855 Mankato Avenue, Winona, MN 55987 in Winona County. The practice phone is (507) 454-3650.
- Winona Health855 Mankato Avenue, Winona, MN 55987 · Winona CountyPhone(507) 454-3650
Source: Dmand AI Affiliation Data
Dr. Charles G. Kooiker is affiliated with 1 site of care and 1 medical group
Dr. Kooiker's primary practice is Winona Health in Winona, Minnesota, part of Winona Health. The medical group on file is Winona Health. Dr. Kooiker's employer is on file too: a hospital.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Charles G. Kooiker's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Kooiker practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Winona Health | Available with a free account |
Source: Dmand AI Technology Install Data
For health IT teams
Dmand AI maps EHR vendors, IT decision makers and buying committees across Winona Health and 6.2K+ hospitals, with verified contacts in the same login.
Dr. Charles G. Kooiker is one of 1,097 emergency medicine physicians in Minnesota
Emergency medicine is Dr. Kooiker's primary specialty in the NPI Registry, under taxonomy code 207P00000X. Dr. Kooiker is licensed in Minnesota.
Specialties and state licenses
- Emergency medicine, MinnesotaPrimary
Emergency medicine physicians near Dr. Kooiker
Counts of emergency medicine physicians 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. Charles G. Kooiker billed Medicare for 198 services in 2024
CMS data shows 198 Medicare services from Dr. Kooiker across 3 procedure codes in 2024, for 195 Medicare patients. Medicare paid $18,148 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Kooiker's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 2722024: 19827%
Dr. Kooiker compared with the Minnesota median for emergency medicine physicians, 2024
- Dr. Kooiker
- Minnesota median
- Medicare services
- 198vs 23817% below
- Medicare patients
- 195vs 198Close to median
- Part D claims
- 28vs 4233% below
Medians across 1,063 emergency medicine physicians in Minnesota with Dmand AI profiles that report each measure.
Dr. Kooiker's most billed Medicare procedure codes, 2024
CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.
Need commercial claims for Dr. Kooiker?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Kooiker and other emergency medicine physicians in Minnesota.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Charles G. Kooiker treated 195 Medicare patients in 2024, average age 72
CMS counts 195 Medicare patients who saw Dr. Kooiker in 2024. The largest group is 75 to 84, with 52 patients. 75% of them have high blood pressure, and 63% have high cholesterol. 36% are also on Medicaid. Their average risk score is 1.57, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.
Across all payers, Dmand AI patient panel data puts Dr. Kooiker's median patient age at 77, with 56% women.
Dr. Kooiker's Medicare patients by age, 2024
Dr. Kooiker's Medicare patients by sex, 2024
- Women10051%
- Men9549%
Chronic conditions among Dr. Kooiker's Medicare patients, 2024
- High blood pressure75%
- High cholesterol63%
- Arthritis44%
- Mood disorders41%
- Anxiety36%
- Diabetes35%
- Depression34%
- Chronic kidney disease32%
Share of Medicare patients with each condition. A patient can have several.
Dr. Kooiker's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 77
Patient panel by sex, all payers
- Women56%
- Men44%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Charles G. Kooiker wrote 137 Medicare Part D claims in 2024
In 2024, Dr. Kooiker wrote 137 Medicare Part D claims for 102 patients. 90% of them were for generic drugs. CMS names the drug for 28 of them, across 2 drugs with 11 or more claims each, at $116 in total drug cost. In 2023, CMS named 35 claims across 2 drugs.
Dr. Kooiker's Part D claims by kind of drug, 2024
- Generic123 claims90%
- Brand-name and other14 claims10%
Dr. Kooiker'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. Kooiker's Part D claims, 2024
- Opioids11%15 of 137 claims
- Antibiotics32%44 of 137 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: 352024: 2820%
Drugs named by CMS: 2 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
How Dr. Charles G. Kooiker takes part in Medicare
Dr. Kooiker accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
For MedTech and pharma teams
Filter 7.4M+ HCPs by Medicare procedures, Part D drugs and Open Payments history, then reach them with verified contacts in one login.
Dr. Charles G. Kooiker graduated from Des Moines University of Osteopathic Medicine and Health Sciences
Dr. Kooiker graduated from Des Moines University of Osteopathic Medicine and Health Sciences in 2017.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Charles G. Kooiker'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 services and procedure codes | Medicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab) |
| State medians for the same specialty | Dmand AI Peer Benchmarks |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab) |
| 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) |
| 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. Charles G. Kooiker
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. Charles G. Kooiker's NPI number?
Dr. Charles G. Kooiker's NPI number is 1477092948. It was assigned on February 17, 2017, and it is active in the NPI Registry.
What kind of doctor is Dr. Charles G. Kooiker?
Dr. Charles G. Kooiker is an emergency medicine physician in Winona, Minnesota. The primary specialty in the NPI Registry is Emergency Medicine Physician (taxonomy code 207P00000X).
Where does Dr. Charles G. Kooiker practice?
Dr. Kooiker practices at 855 Mankato Avenue, Winona, MN 55987. Dr. Kooiker's primary practice is Winona Health in Winona, Minnesota, part of Winona Health.
What is Dr. Charles G. Kooiker's office phone number?
The practice phone on file for Dr. Kooiker is (507) 454-3650.
What is Dr. Charles G. Kooiker's medical license number?
Dr. Kooiker holds Minnesota license 69217.
Which hospitals is Dr. Charles G. Kooiker affiliated with?
Dr. Kooiker practices at Winona Health in Winona, Minnesota.
What medical group is Dr. Charles G. Kooiker part of?
Dr. Kooiker is linked to Winona Health.
Does Dr. Charles G. Kooiker accept Medicare?
Yes. CMS data shows Dr. Kooiker billed Medicare for 198 services in 2024, and Dr. Kooiker accepts Medicare assignment.
How many Medicare patients does Dr. Charles G. Kooiker see?
CMS counts 195 Medicare patients who saw Dr. Kooiker in 2024, with an average age of 72.
What services does Dr. Charles G. Kooiker bill to Medicare?
In 2024, Dr. Kooiker's most billed Medicare services were emergency department visit (99285), emergency department visit (99284) and emergency department visit (99283).
Show 3 more questionsShow fewer questions
Where did Dr. Charles G. Kooiker go to medical school?
Dr. Kooiker graduated from Des Moines University of Osteopathic Medicine and Health Sciences in 2017.
What drugs does Dr. Charles G. Kooiker prescribe most?
In 2024 Medicare Part D data, Dr. Kooiker's most prescribed drugs by claims were Cephalexin and Oxycodone HCl.
How long has Dr. Charles G. Kooiker been practicing?
Dr. Kooiker graduated from medical school in 2017, 9 years ago.
Selling to emergency medicine practices?
See emergency medicine physicians in Minnesota by site of care and group
Find the practices, groups and hospitals they work with, and the right people to contact at each.
- 30 days free
- Self-serve
- No credit card