Individual
MS. MARGARET MARY GROSSMAYER
Active
Sole proprietor
Yes
Provider details
NPI number
Gender
F
Credential
APRN, FNP-C
Contact information
Practice address
40 75TH ST, WILLOWBROOK, IL 60527-2325
(630) 581-5372
Mailing address
1421 WALNUT CIR, CAROL STREAM, IL 60188-9074
Taxonomy
Speciality
Code
Description
License number
State
363L00000X
Nurse Practitioner
Primary
209033129
IL
Other
Enumeration date
09/05/2025
Last updated
11/26/2025
About Stedi
Stedi is the only programmable healthcare clearinghouse. You can use Stedi's APIs to process eligibility checks, claims, remits, and more.
Contact us