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

Mrs. Mary Theresa Ellen Lau, RN, MS, APN

Individual provider Adult Health Clinical Nurse Specialist · NPI 1801839774

Mrs. Mary Theresa Ellen Lau, RN, MS, APN is an Adult Health Clinical Nurse Specialist in Hines, Illinois. Licensed in Illinois. Registered with an NPI since 2006.

Licensed in
IL
In the registry since
2006
What do these letters mean?
RN — Registered Nurse
A licensed nurse who completed a nursing degree and passed the NCLEX-RN examination.
MS — Master of Science
A graduate science degree.
APN — Advanced Practice Nurse
The umbrella title some states use for nurse practitioners and other advanced practice nurses.

See every abbreviation used in this directory →

Practice location Address checks out

5TH Avenue & Roosevelt Rd Bldg 200 Rm 546 118S
Hines, IL 60141
Phone: (708) 202-8387
Fax: (708) 202-2180
Show map & directions

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

Specialties & licences

Adult Health Clinical Nurse Specialist (primary) Taxonomy 364SA2200X (IL)

Record details

NPI number1801839774
Entity typeIndividual (Type 1)
GenderFemale
Credentials RN , MS , APN
Sole proprietorNo
NPI enumeratedJune 14, 2006
Last updated in NPPESJuly 13, 2026