Elizabeth Mattes Nielsen, MD

Individual provider Critical Care Medicine (Internal Medicine) Physician · NPI 1861842007

Elizabeth Mattes Nielsen, MD is a Hospice/Palliative Care in Wauwatosa, Wisconsin. Qualified in 2015, 11 years ago. Practices with Midwest Critical Care SC, a 45-clinician group, works from 4 locations and accepts Medicare assignment. Licensed in Illinois, Indiana and Wisconsin.

Years since qualifying: 11
Licensed in: IL, IN, WI
In the registry since: 2016
Specialties on file: 6

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

1155 N Honey Creek Pkwy
Wauwatosa, WI 53213-3189
Phone: (414) 615-5900

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

Additional practice locations (3)

2300 N Edward St, Decatur, IL 62526-4163 — (217) 876-4200
Memorial Medical Ctr, Springfield, IL 62781-0001 — (217) 545-0193
725 American Ave, Waukesha, WI 53188-5031 — (262) 928-3000

Specialties & licences

Pulmonary Disease Physician (primary)	Taxonomy 207RP1001X · Licence 76831 (WI)
Critical Care Medicine (Internal Medicine) Physician	Taxonomy 207RC0200X · Licence 036147784 (IL)
Critical Care Medicine (Internal Medicine) Physician	Taxonomy 207RC0200X · Licence 76831 (WI)
Pulmonary Disease Physician	Taxonomy 207RP1001X · Licence 036147784 (IL)
Internal Medicine Physician	Taxonomy 207R00000X · Licence 125.068567 (IL)
Internal Medicine Physician	Taxonomy 207R00000X · Licence 01089069A (IN)

Record details

NPI number	1861842007
Entity type	Individual (Type 1)
Gender	Female
Credentials	MD
Sole proprietor	Yes
NPI enumerated	June 19, 2016
Last updated in NPPES	July 14, 2026
Certification date	July 14, 2026

Medicare enrollment

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

Medicare specialty	HOSPICE/PALLIATIVE CARE
Also practises	INTERNAL MEDICINE
Medical school	OTHER
Graduated	2015 (11 years in practice)
Group practice	Midwest Critical Care Sc — 45 clinicians
Accepts Medicare assignment	Yes — accepts the Medicare-approved amount
Practice locations	3 on file with Medicare