Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
NPIDirectory

Robert Elmer Sonnenburg Jr, MD

Individual provider Otolaryngology Physician · NPI 1972588176

Robert Elmer Sonnenburg Jr, MD is an Otolaryngology in Green Bay, Wisconsin. Graduated from Medical College of Wisconsin in 2000, 26 years ago. Practices with Baycare Clinic LLP, a 196-clinician group and accepts Medicare assignment. Licensed in Wisconsin.

Years since qualifying
26
Trained at
Medical College of Wisconsin
Licensed in
WI
In the registry since
2005
Specialties on file
2
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

2845 Greenbrier Rd
Green Bay, WI 54311-6519
Phone: (920) 288-8230
Fax: (920) 288-8235
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Otolaryngology Physician (primary) Taxonomy 207Y00000X · Licence 47907020 (WI)
Sleep Medicine (Otolaryngology) Physician Taxonomy 207YS0012X · Licence 47907020 (WI)

Record details

NPI number1972588176
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedDecember 9, 2005
Last updated in NPPESMay 19, 2026
Certification dateMay 19, 2026

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyOTOLARYNGOLOGY
Also practisesALLERGY/IMMUNOLOGY
Medical schoolMEDICAL COLLEGE OF WISCONSIN
Graduated 2000 (26 years in practice)
Group practice Baycare Clinic Llp — 196 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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