Dr. Robert B. Prehn, MD
- Medicare services, 2024
- 217
- Medicare patients, 2024
- 143
- Part D claims, 2024
- 491
- Hospital affiliations
- 3
- Industry payments
- $2,049
- Practice address
- 119 E Bell St, Neenah, WI 54956
- Practice phone
- Call (920) 969-1768
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Ear Nose and Throat Specialists of Wisconsin SC
Neenah, Wisconsin
Find Dr. Prehn'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. Robert B. Prehn is an otolaryngologist in Neenah, Wisconsin
Dr. Prehn practices at Ear Nose and Throat Specialists of Wisconsin SC in Neenah, Wisconsin.
Dr. Prehn's NPI, 1407859523, was assigned on May 23, 2005. Dr. Prehn graduated from University of Wisconsin School of Medicine in 1991. Dr. Prehn holds Wisconsin license 33668-20.
- NPI
- 1407859523NPI Registry (opens in a new tab)
- Medicare PAC ID
- 8325935430
- NPI enumeration date
- May 23, 2005
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (920) 969-1768
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 61
- Medical school graduation
- 1991
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Robert B. Prehn practices at Ear Nose and Throat Specialists of Wisconsin SC in Neenah, Wisconsin
Dr. Prehn's primary practice is Ear Nose and Throat Specialists of Wisconsin SC, at 119 E Bell St, Neenah, WI 54956 in Winnebago County. The practice phone is (920) 969-1768.
- Ear Nose and Throat Specialists of Wisconsin SC119 E Bell St, Neenah, WI 54956 · Winnebago CountyPhone(920) 969-1768
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Robert B. Prehn is affiliated with 5 sites of care and 2 medical groups
Dr. Prehn's primary practice is Ear Nose and Throat Specialists of Wisconsin SC in Neenah, Wisconsin. Dr. Prehn is also affiliated with ThedaCare Regional Medical Center-Appleton. The medical group on file is Ear, Nose and Throat Specialists of Wisconsin. Dmand AI also links Dr. Prehn to 2 more hospitals, 1 group practice or clinic and 1 medical group, each named with a free account.
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; and Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. Robert B. Prehn's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Prehn practices, 4 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Ear Nose and Throat Specialists of Wisconsin SC | Available with a free account |
| +4 more sites and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Robert B. Prehn is one of 185 otolaryngologists in Wisconsin
Otolaryngology is Dr. Prehn's primary specialty in the NPI Registry, under taxonomy code 207Y00000X. Dr. Prehn is licensed in Wisconsin.
Specialties and state licenses
- Otolaryngology, WisconsinPrimary
Otolaryngologists near Dr. Prehn
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. Robert B. Prehn billed Medicare for 217 services in 2024
CMS data shows 217 Medicare services from Dr. Prehn across 8 procedure codes in 2024, for 143 Medicare patients. Medicare paid $16,120 for them. Every service was in an office.
Dr. Prehn's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 1512024: 1463%
- Surgery
- 2023: 702024: 5521%
- Tests and treatments
- 2023: 132024: 1623%
Dr. Prehn compared with the Wisconsin median for otolaryngologists, 2024
- Dr. Prehn
- Wisconsin median
- Medicare services
- 217vs 26719% below
- Medicare patients
- 143vs 17016% below
- Part D claims
- 334vs 1302.6 times
Medians across 200 otolaryngologists in Wisconsin with Dmand AI profiles that report each measure.
Dr. Prehn'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.
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Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Prehn and other otolaryngologists in Wisconsin.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Robert B. Prehn treated 143 Medicare patients in 2024, average age 70
CMS counts 143 Medicare patients who saw Dr. Prehn in 2024. The largest group is 65 to 74, with 62 patients. 68% of them have high cholesterol, and 64% have high blood pressure. 17% are also on Medicaid. Their average risk score is 1.08, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Prehn's median patient age at 56, with 50% women.
Dr. Prehn's Medicare patients by age, 2024
Dr. Prehn's Medicare patients by sex, 2024
- Women9164%
- Men5236%
Chronic conditions among Dr. Prehn's Medicare patients, 2024
- High cholesterol68%
- High blood pressure64%
- Arthritis48%
- Anxiety31%
- Mood disorders28%
- Chronic kidney disease25%
- Depression23%
- Ischemic heart disease23%
Share of Medicare patients with each condition. A patient can have several.
Dr. Prehn's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 56
Patient panel by sex, all payers
- Women50%
- Men49%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Robert B. Prehn wrote 491 Medicare Part D claims in 2024
In 2024, Dr. Prehn wrote 491 Medicare Part D claims for 209 patients. 96% of them were for generic drugs. CMS names the drug for 334 of them, across 10 drugs with 11 or more claims each, at $10,819 in total drug cost. In 2023, CMS named 303 claims across 10 drugs.
Dr. Prehn's Part D claims by kind of drug, 2024
- Generic471 claims96%
- Brand-name20 claims4%
Dr. Prehn'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. Prehn's Part D claims, 2024
- Opioids4%21 of 491 claims
- Antibiotics5%26 of 491 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: 3032024: 33410%
Drugs named by CMS: 10 in 2024, 10 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. Robert B. Prehn takes part in Medicare
Dr. Prehn 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)
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Dr. Robert B. Prehn received $2,049 in industry payments from 2018 to 2025
CMS Open Payments shows 16 general payments to Dr. Prehn from 9 drug and device companies from 2018 to 2025. Travel and lodging make up the largest share, 71% of the total. Medical Device Business Services, Inc. paid the most, $1,458.
General payments to Dr. Prehn by program year, 2018 to 2025
General payments to Dr. Prehn by kind, 2018 to 2025
- Travel and lodging$1,45871%
- Food and beverage$55727%
- Education$342%
Companies that paid Dr. Prehn the most, 2018 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Robert B. Prehn graduated from University of Wisconsin School of Medicine
Dr. Prehn graduated from University of Wisconsin School of Medicine in 1991.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Robert B. Prehn'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 | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice Data |
| Primary practice, affiliations and health system | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice DataDmand AI Affiliation 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) |
| 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. Robert B. Prehn
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. Robert B. Prehn's NPI number?
Dr. Robert B. Prehn's NPI number is 1407859523. It was assigned on May 23, 2005, and it is active in the NPI Registry.
What kind of doctor is Dr. Robert B. Prehn?
Dr. Robert B. Prehn is an otolaryngologist in Neenah, Wisconsin. The primary specialty in the NPI Registry is Otolaryngology Physician (taxonomy code 207Y00000X).
Where does Dr. Robert B. Prehn practice?
Dr. Prehn practices at 119 E Bell St, Neenah, WI 54956. Dr. Prehn's primary practice is Ear Nose and Throat Specialists of Wisconsin SC in Neenah, Wisconsin. Dmand AI also links Dr. Prehn to 2 hospitals, 1 group practice or clinic and 1 medical group.
What is Dr. Robert B. Prehn's office phone number?
The practice phone on file for Dr. Prehn is (920) 969-1768.
What is Dr. Robert B. Prehn's medical license number?
Dr. Prehn holds Wisconsin license 33668-20.
Which hospitals is Dr. Robert B. Prehn affiliated with?
Dr. Prehn is affiliated with ThedaCare Regional Medical Center-Appleton. Dmand AI links Dr. Prehn to 2 more hospitals.
What medical group is Dr. Robert B. Prehn part of?
Dr. Prehn is linked to Ear, Nose and Throat Specialists of Wisconsin. Dmand AI links Dr. Prehn to 1 more medical group.
Does Dr. Robert B. Prehn accept Medicare?
Yes. CMS data shows Dr. Prehn billed Medicare for 217 services in 2024, and Dr. Prehn accepts Medicare assignment.
How many Medicare patients does Dr. Robert B. Prehn see?
CMS counts 143 Medicare patients who saw Dr. Prehn in 2024, with an average age of 70.
What services does Dr. Robert B. Prehn bill to Medicare?
In 2024, Dr. Prehn's most billed Medicare services were office visit, established patient (99213), surgery: lungs and airway (31231) and office visit, new patient (99203).
Show 4 more questionsShow fewer questions
Where did Dr. Robert B. Prehn go to medical school?
Dr. Prehn graduated from University of Wisconsin School of Medicine in 1991.
What drugs does Dr. Robert B. Prehn prescribe most?
In 2024 Medicare Part D data, Dr. Prehn's most prescribed drugs by claims were Fluticasone Propionate, Omeprazole and Ipratropium Bromide.
Has Dr. Robert B. Prehn received payments from drug or device companies?
CMS Open Payments shows $2,049 in general payments to Dr. Prehn from 9 companies from 2018 to 2025. The largest total came from Medical Device Business Services, Inc.
How long has Dr. Robert B. Prehn been practicing?
Dr. Prehn graduated from medical school in 1991, 35 years ago.
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