Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
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Marissa Guerrero, MSN, FNP-BC

Individual provider Family Nurse Practitioner · NPI 1548746548

Marissa Guerrero, MSN, FNP-BC is a Nurse Practitioner in Oak Lawn, Illinois. Qualified in 2018, 8 years ago. Practices with Lockport Express Medical Group Inc, a 6-clinician group and accepts Medicare assignment. Licensed in Illinois.

Years since qualifying
8
Licensed in
IL
In the registry since
2018
What do these letters mean?
MSN — Master of Science in Nursing
A graduate nursing degree, usually held alongside an advanced practice licence.
FNP-BC — Family Nurse Practitioner, Board Certified
A family nurse practitioner certified by the ANCC.

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Practice location Address checks out

10837 S Cicero Ave Ste 320
Oak Lawn, IL 60453-6459
Phone: (708) 636-1601
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Family Nurse Practitioner (primary) Taxonomy 363LF0000X · Licence 209017789 (IL)

Record details

NPI number1548746548
Entity typeIndividual (Type 1)
GenderFemale
Credentials MSN , FNP-BC
Sole proprietorNo
NPI enumeratedJuly 13, 2018
Last updated in NPPESJuly 13, 2018

Medicare enrollment

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

Medicare specialtyNURSE PRACTITIONER
Medical schoolOTHER
Graduated 2018 (8 years in practice)
Group practice Lockport Express Medical Group Inc — 6 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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