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

Sharon Greiner, MSN, CNM, FNP-BC

Individual provider Family Nurse Practitioner · NPI 1477218444

Sharon Greiner, MSN, CNM, FNP-BC is a Nurse Practitioner in Merrillville, Indiana. Qualified in 2021, 5 years ago. Practices with Midwest Express Care 4 LLC, a 63-clinician group, works from 2 locations and accepts Medicare assignment. Licensed in Indiana.

Years since qualifying
5
Licensed in
IN
In the registry since
2021
Specialties on file
2
What do these letters mean?
MSN — Master of Science in Nursing
A graduate nursing degree, usually held alongside an advanced practice licence.
CNM — Certified Nurse-Midwife
An advanced practice nurse who provides prenatal care and delivers babies.
FNP-BC — Family Nurse Practitioner, Board Certified
A family nurse practitioner certified by the ANCC.

See every abbreviation used in this directory →

Claim this listing Report a problem Suggest an edit

Practice location Address checks out

6901 Broadway
Merrillville, IN 46410-3535
Phone: (219) 763-8112
Show map & directions

Directions in Google Maps · Apple Maps · OpenStreetMap

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

Additional practice locations (1)

  • 1923 W Glen Park Ave, Griffith, IN 46319-3703 — (219) 922-2535

Specialties & licences

Advanced Practice Midwife (primary) Taxonomy 367A00000X · Licence 09000477A (IN)
Family Nurse Practitioner Taxonomy 363LF0000X · Licence 71012214A (IN)

Record details

NPI number1477218444
Entity typeIndividual (Type 1)
GenderFemale
Credentials MSN , CNM , FNP-BC
Sole proprietorNo
NPI enumeratedNovember 4, 2021
Last updated in NPPESSeptember 12, 2024
Certification dateSeptember 12, 2024

Medicare enrollment

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

Medicare specialtyNURSE PRACTITIONER
Medical schoolOTHER
Graduated 2021 (5 years in practice)
Group practice Midwest Express Care 4 Llc — 63 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations3 on file with Medicare

Other providers in Merrillville