Robert Elmer Sonnenburg Jr, M.D.
Otolaryngology Physician · Green Bay, WI
Robert Elmer Sonnenburg Jr, M.D. is an otolaryngology physician with a practice address in Green Bay, Wisconsin, and NPI 1972588176, issued on Dec 9, 2005. Check the license (Wisconsin 47907020, as entered in NPPES) on the Wisconsin Medical Examining Board; the Medicare figures below come from public CMS files.
- Name
- Robert Elmer Sonnenburg Jr
- Credential
- M.D.
- Primary taxonomy
- Otolaryngology Physician 207Y00000X
- License number
- 47907020 WI
Self-reported in NPPES; status is on the state search - Practice location
- 2845 Greenbrier RD, Green Bay, WI 54311
- Phone
- (920) 288-8230
- Enumerated
- Dec 9, 2005
- Record last updated
- May 19, 2026
- Fax
- (920) 288-8235
- Medicaid IDs
- 34628100 WI
4728376 MI
4728385 MI
4728367 MI - Medicare enrollment
- Enrolled (PECOS I20050511000580); accepts Medicare assignment
- Medical or professional school
- Medical College Of Wisconsin, 2000
- Entity
- Type 1 · individual
8 nearest otolaryngology physician records → All 231 in Wisconsin → Look up another NPI →
Also registered at 2845 Greenbrier RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Jade Abts, NPNurse Practitioner1992293708
- Ian AdamsonCertified Registered Nurse Anesthetist1184981532
- Kerry Ahrens, M.D.Emergency Medicine Physician1639497621
- Andrea Akpoguma, M.D.Hospitalist Physician1508091117
- Kirsten Akpoguma, CRNACertified Registered Nurse Anesthetist1417601725
- Valerie Albers, A.P.N.P.Nurse Practitioner1396015830
Verify Robert Elmer Sonnenburg Jr in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWisconsin Medical Examining Board
Search for license 47907020Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
37% fewer Medicare Part D claims than the average otolaryngology physician in 2024
343 Medicare Part D claims for 131 beneficiaries, against an average of 541 among the 8,339 providers of this specialty who prescribed in Part D. 39 claims were for opioids.
Most prescribed
- Fluticasone Propionate92 claims
- Cephalexin46 claims
- Hydrocodone-Acetaminophen32 claims
- Amoxicillin-Clavulanate Potass17 claims
- Prednisone14 claims
- Diazepam12 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
The practice group's MIPS final score for 2023 (Medicare payment program): 77.3 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $270.60
10 payments; by number, the most common kind was food and beverage; the largest payer was Inspire Medical Systems, Inc. The 6,429 providers of this specialty with any payment received $1,922.50 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- Baycare Clinic LLPMarinette, WI
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Robert Elmer Sonnenburg Jr among 231 otolaryngology physician records in Wisconsin
Robert Elmer Sonnenburg Jr, M.D. is one of 231 otolaryngology physician records with a practice address in Wisconsin. 73% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2005, is newer than 0% of them.
- NPI issued2005 · 0% of these records are older, 87% newer
- In a Medicare fileYes · 73% of these records are
- In the CMS Doctors and Clinicians fileYes · 64% of these records are
- Graduated2000 · median 2004 among the 147 with a school on file
- Record last updated2026 · 53% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207Y00000X and a Wisconsin practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Otolaryngology Physician providers in Wisconsin
There are 231 otolaryngology physician records in Wisconsin.
All 231 in Wisconsin → Every provider in Green Bay → Otolaryngology Physician nationwide →
The 8 otolaryngology physician records with the nearest ZIP codes
- Diane Mayland, MDGreen Bay, WI 543111083650907
- Jon Slezak, M.D.Green Bay, WI 543111356724611
- Sherwood Vanderwoude, MDGreen Bay, WI 543111417978172
- Douglas Dawson, MDGreen Bay, WI 543041275519043
- Andrew Vanbruggen, DOGreen Bay, WI 543041003337809
- Alexander Barr, MDGreen Bay, WI 543031174015176
- Scott Hunt, MDGreen Bay, WI 543031467478255
- Michael Oldenburg, MDGreen Bay, WI 543031770847683
Common questions
What is Robert Elmer Sonnenburg Jr, M.D.'s NPI number?
Robert Elmer Sonnenburg Jr, M.D.'s National Provider Identifier (NPI) is 1972588176, issued on Dec 9, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Robert Elmer Sonnenburg Jr, M.D. located?
The NPPES record lists a practice address at 2845 Greenbrier RD, Green Bay, WI, 54311. Phone: (920) 288-8230. Providers update this record themselves, so call before visiting.
How can I verify Robert Elmer Sonnenburg Jr, M.D.'s license?
NPPES lists Wisconsin license number 47907020, as entered by the provider. Search the Wisconsin Medical Examining Board at https://dsps.wi.gov/Pages/BoardsCouncils/MEB/Default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Robert Elmer Sonnenburg Jr, M.D. prescribe under Medicare Part D?
In 2024, Robert Elmer Sonnenburg Jr, M.D. had 343 Medicare Part D claims for 131 beneficiaries; the average among otolaryngology physician prescribers was 541. Part D covers Medicare prescriptions only.
What is Robert Elmer Sonnenburg Jr, M.D.'s MIPS final score?
The 2023 MIPS final score is 77.3 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.