Robert Prehn, M.D.
NPI 1407859523 · Otolaryngology Physician · Neenah, WI
Enrolled with Medicare as Practitioner - Otolaryngology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Robert Prehn, M.D. is a Otolaryngology Physician provider in Neenah, WI (NPI 1407859523).
Provider details
- NPI number
- 1407859523
- Entity type
- Individual
- Primary specialty
- Otolaryngology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 33668 (WI)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Other Service Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
21 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
217 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our .
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 61 | $85 |
| Diagnostic Exam of Nasal Passages Using an Endoscope31231 | 41 | $146 |
| New Patient Office Or Other Outpatient Visit With Low Level of Medical Decision Making, If Using Time, 30 Minutes Or More99203 | 34 | $104 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 25 | $120 |
| Exam of Ear Using a Microscope92504 | 16 | $27 |
| Established Patient Office Or Other Outpatient Visit With Straightforward Medical Decision Making, If Using Time, 10 Minutes Or More99212 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 10 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Fluticasone Propionate | 100 | 45 |
| Omeprazole | 72 | 36 |
| Ipratropium Bromide | 44 | 15 |
| Mometasone Furoate | 25 | 23 |
| Famotidine | 22 | — |
| Prednisone | 21 | 18 |
| Hydrocodone/Acetaminophenbrand: Hydrocodone-Acetaminophen | 13 | 11 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$37 across 2 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2005-05-23
- Last updated
- 2017-03-10
Frequently asked questions
- What is Robert Prehn's NPI number?
- Robert Prehn's National Provider Identifier (NPI) is 1407859523, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Robert Prehn's specialty?
- Robert Prehn is listed in the NPPES registry with a primary specialty of Otolaryngology Physician (Allopathic & Osteopathic Physicians).
- Where is Robert Prehn located?
- Robert Prehn's practice location on file with NPPES is 119 E Bell St, Neenah, WI 54956-4993.
- What is Robert Prehn's phone number?
- The practice phone number listed in the NPPES registry for Robert Prehn is (920) 969-1768.
- Does Robert Prehn accept Medicare?
- Robert Prehn is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Robert Prehn's NPI active?
- Yes — Robert Prehn's NPI (1407859523) is active in the NPPES registry as of the last update on 2017-03-10.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.