Robert Sonnenburg Jr, M.D.
NPI 1972588176 · Otolaryngology Physician · Green Bay, WI
Enrolled with Medicare as Practitioner - Otolaryngology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Robert Sonnenburg Jr, M.D. is a Otolaryngology Physician provider in Green Bay, WI (NPI 1972588176).
Provider details
- NPI number
- 1972588176
- Entity type
- Individual
- Primary specialty
- Otolaryngology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 47907020 (WI)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
20 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
202 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 | 51 | $85 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 42 | $121 |
| Diagnostic Exam of Nasal Passages Using an Endoscope31231 | 28 | $175 |
| Diagnostic Exam of Voice Box Using a Flexible Endoscope31575 | 26 | $120 |
| New Patient Office Or Other Outpatient Visit With Moderate Level of Medical Decision Making, If Using Time, 45 Minutes Or More99204 | 25 | $152 |
| New Patient Office Or Other Outpatient Visit With Low Level of Medical Decision Making, If Using Time, 30 Minutes Or More99203 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 8 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Fluticasone Propionate | 92 | 31 |
| Cephalexin | 46 | 40 |
| Hydrocodone/Acetaminophenbrand: Hydrocodone-Acetaminophen | 32 | 29 |
| Amoxicillin/Potassium Clavbrand: Amoxicillin-Clavulanate Potass | 17 | 16 |
| Prednisone | 14 | 14 |
| Mometasone Furoate | 12 | — |
| Diazepam | 12 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$271 across 10 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
- 2005-12-09
- Last updated
- 2026-05-19
- Certified
- 2026-05-19
Frequently asked questions
- What is Robert Sonnenburg Jr's NPI number?
- Robert Sonnenburg Jr's National Provider Identifier (NPI) is 1972588176, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Robert Sonnenburg Jr's specialty?
- Robert Sonnenburg Jr is listed in the NPPES registry with a primary specialty of Otolaryngology Physician (Allopathic & Osteopathic Physicians).
- Where is Robert Sonnenburg Jr located?
- Robert Sonnenburg Jr's practice location on file with NPPES is 2845 Greenbrier Rd, Green Bay, WI 54311-6519.
- What is Robert Sonnenburg Jr's phone number?
- The practice phone number listed in the NPPES registry for Robert Sonnenburg Jr is (920) 288-8230.
- Does Robert Sonnenburg Jr accept Medicare?
- Robert Sonnenburg Jr is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Robert Sonnenburg Jr's NPI active?
- Yes — Robert Sonnenburg Jr's NPI (1972588176) is active in the NPPES registry as of the last update on 2026-05-19.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.