Johnna E. Danner-Terlouw, ARNP
- Medicare patients, 2024
- 28
- Part D claims, 2024
- 228
- Hospital affiliations
- 2
- Industry payments
- $22
- Medical groups
- 2
- Practice address
- 1229 C Avenue East, Oskaloosa, IA 52577
- Practice phone
- Call (641) 672-3100
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Johnna Danner-Terlouw'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.
Johnna E. Danner-Terlouw is a nurse practitioner in Oskaloosa, Iowa
Johnna Danner-Terlouw practices at Mahaska Health in Oskaloosa, Iowa, part of Mahaska County.
Johnna Danner-Terlouw's NPI, 1235567652, was assigned on October 22, 2013. Johnna Danner-Terlouw holds Iowa license J115080.
- NPI
- 1235567652NPI Registry (opens in a new tab)
- Medicare PAC ID
- 2668600222
- NPI enumeration date
- October 22, 2013
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (641) 672-3100
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 39
- Medical school graduation
- 2013
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Johnna E. Danner-Terlouw practices at Mahaska Health in Oskaloosa, Iowa
Johnna Danner-Terlouw's primary practice is Mahaska Health, at 1229 C Avenue East, Oskaloosa, IA 52577 in Mahaska County. The practice phone is (641) 672-3100.
- Mahaska Health1229 C Avenue East, Oskaloosa, IA 52577 · Mahaska CountyPhone(641) 672-3100
Source: Dmand AI Affiliation Data
Johnna E. Danner-Terlouw is affiliated with 4 sites of care and 2 medical groups
Johnna Danner-Terlouw's primary practice is Mahaska Health in Oskaloosa, Iowa, part of Mahaska County. Johnna Danner-Terlouw is also affiliated with UnityPoint Health - Iowa Methodist Medical Center. The medical group on file is Mahaska Health. Dmand AI also links Johnna Danner-Terlouw to 2 more group practices and clinics and 1 medical group, each named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Johnna E. Danner-Terlouw's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Johnna Danner-Terlouw practices, 4 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Mahaska Health | Available with a free account |
| +3 more sites and 1 medical group | 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 Mahaska County and 6.2K+ hospitals, with verified contacts in the same login.
Johnna E. Danner-Terlouw is one of 1,051 nurse practitioners in Iowa
Nurse practitioner is Johnna Danner-Terlouw's primary specialty in the NPI Registry, under taxonomy code 363L00000X. Dmand AI has Johnna Danner-Terlouw's licenses on file in 2 states: Iowa and Illinois.
Specialties and state licenses
- Nurse practitioner, IowaPrimary
- Illinois license
Nurse practitioners near Johnna Danner-Terlouw
Counts of nurse practitioners 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
Johnna E. Danner-Terlouw treated 28 Medicare patients in 2024, average age 74
CMS counts 28 Medicare patients who saw Johnna Danner-Terlouw in 2024. The largest group is 75 to 84, with 13 patients. 75% of them have high blood pressure, and 75% have high cholesterol. Their average risk score is 2.74, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.
Across all payers, Dmand AI patient panel data puts Johnna Danner-Terlouw's median patient age at 76, with 61% women.
Johnna Danner-Terlouw's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Johnna Danner-Terlouw's Medicare patients by sex, 2024
- Women1450%
- Men1450%
Chronic conditions among Johnna Danner-Terlouw's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Chronic kidney disease61%
- Diabetes57%
- Heart failure54%
- Mood disorders54%
- Depression50%
- Arthritis46%
Share of Medicare patients with each condition. A patient can have several.
Johnna Danner-Terlouw's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 76
Patient panel by sex, all payers
- Women61%
- Men39%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Johnna E. Danner-Terlouw wrote 228 Medicare Part D claims in 2024
In 2024, Johnna Danner-Terlouw wrote 228 Medicare Part D claims for 87 patients. 83% of them were for generic drugs.
Johnna Danner-Terlouw's Part D claims by kind of drug, 2024
- Generic190 claims83%
- Brand-name38 claims17%
Drug classes CMS tracks in Johnna Danner-Terlouw's Part D claims, 2024
- Antibiotics22%50 of 228 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Source: Medicare Part D Prescribers - by Provider (CMS), 2024 data
How Johnna E. Danner-Terlouw takes part in Medicare
Johnna Danner-Terlouw 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.
Johnna E. Danner-Terlouw received $22 in industry payments in 2025
CMS Open Payments shows 1 general payment to Johnna Danner-Terlouw from 1 drug or device company in 2025. Food and beverage make up the largest share, 100% of the total. Kerecis Limited paid the most, $22.
Companies that paid Johnna Danner-Terlouw the most, 2025 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Johnna E. Danner-Terlouw'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 DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab) |
| Part D prescribing | 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) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| 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 Johnna E. Danner-Terlouw
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Johnna E. Danner-Terlouw's NPI number?
Johnna E. Danner-Terlouw's NPI number is 1235567652. It was assigned on October 22, 2013, and it is active in the NPI Registry.
What does Johnna E. Danner-Terlouw specialize in?
Johnna E. Danner-Terlouw is a nurse practitioner in Oskaloosa, Iowa. The primary specialty in the NPI Registry is Nurse Practitioner (taxonomy code 363L00000X).
Where does Johnna E. Danner-Terlouw practice?
Johnna Danner-Terlouw practices at 1229 C Avenue East, Oskaloosa, IA 52577. Johnna Danner-Terlouw's primary practice is Mahaska Health in Oskaloosa, Iowa, part of Mahaska County. Dmand AI also links Johnna Danner-Terlouw to 2 group practices and clinics and 1 medical group.
What is Johnna E. Danner-Terlouw's office phone number?
The practice phone on file for Johnna Danner-Terlouw is (641) 672-3100.
What is Johnna E. Danner-Terlouw's medical license number?
Johnna Danner-Terlouw holds Iowa license J115080, one of the licenses on file in 2 states.
Which states has Johnna E. Danner-Terlouw been licensed in?
Dmand AI has state licenses on file for Johnna Danner-Terlouw in Iowa and Illinois.
Which hospitals is Johnna E. Danner-Terlouw affiliated with?
Johnna Danner-Terlouw practices at Mahaska Health in Oskaloosa, Iowa. Johnna Danner-Terlouw is also affiliated with UnityPoint Health - Iowa Methodist Medical Center.
What medical group is Johnna E. Danner-Terlouw part of?
Johnna Danner-Terlouw is linked to Mahaska Health. Dmand AI links Johnna Danner-Terlouw to 1 more medical group.
Does Johnna E. Danner-Terlouw accept Medicare?
Yes. CMS lists Johnna Danner-Terlouw as accepting Medicare assignment.
How many Medicare patients does Johnna E. Danner-Terlouw see?
CMS counts 28 Medicare patients who saw Johnna Danner-Terlouw in 2024, with an average age of 74.
Has Johnna E. Danner-Terlouw received payments from drug or device companies?
CMS Open Payments shows $22 in general payments to Johnna Danner-Terlouw from 1 company from 2025 to 2025. The largest total came from Kerecis Limited.
How long has Johnna E. Danner-Terlouw been practicing?
Johnna Danner-Terlouw graduated from medical school in 2013, 13 years ago.
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