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

Donald Robert Westerhausen III, MD

Individual provider Internal Medicine Physician · NPI 1437491974

Donald Robert Westerhausen III, MD is a Pulmonary Disease in Mishawaka, Indiana. Graduated from Indiana University School of Medicine in 2013, 13 years ago. Practices with Saint Joseph Regional Medical Center Inc, a 141-clinician group and accepts Medicare assignment. Licensed in Illinois and Indiana.

Years since qualifying
13
Trained at
Indiana University School of Medicine
Licensed in
IL, IN
In the registry since
2013
Specialties on file
3
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

611 E Douglas Rd Ste 309
Mishawaka, IN 46545-1467
Phone: (574) 335-6900
Fax: (574) 335-0854
Show map & directions

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Pulmonary Disease Physician (primary) Taxonomy 207RP1001X · Licence 01076759A (IN)
Internal Medicine Physician Taxonomy 207R00000X · Licence 01076759A (IN)
Internal Medicine Physician Taxonomy 207R00000X · Licence 125.063787 (IL)

Record details

NPI number1437491974
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedMarch 22, 2013
Last updated in NPPESAugust 7, 2023
Certification dateAugust 7, 2023

Medicare enrollment

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

Medicare specialtyPULMONARY DISEASE
Also practisesCRITICAL CARE (INTENSIVISTS), INTERNAL MEDICINE
Medical schoolINDIANA UNIVERSITY SCHOOL OF MEDICINE
Graduated 2013 (13 years in practice)
Group practice Saint Joseph Regional Medical Center Inc — 141 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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