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

Mary Holmes, BSN, RN

Individual provider Addiction (Substance Use Disorder) Registered Nurse · NPI 1922741735

Mary Holmes, BSN, RN is an Addiction (Substance Use Disorder) Registered Nurse in Alton, Illinois. Licensed in Illinois. Registered with an NPI since 2022.

Licensed in
IL
In the registry since
2022
What do these letters mean?
BSN — Bachelor of Science in Nursing
A four-year nursing degree.
RN — Registered Nurse
A licensed nurse who completed a nursing degree and passed the NCLEX-RN examination.

See every abbreviation used in this directory →

Practice location Address checks out

2615 Edwards St
Alton, IL 62002-3915
Phone: (618) 462-2331
Fax: (618) 462-2504
Show map & directions

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

Specialties & licences

Addiction (Substance Use Disorder) Registered Nurse (primary) Taxonomy 163WA0400X · Licence 041.169895 (IL)

Record details

NPI number1922741735
Entity typeIndividual (Type 1)
GenderFemale
Credentials BSN , RN
Sole proprietorNo
NPI enumeratedApril 19, 2022
Last updated in NPPESApril 19, 2022
Certification dateApril 19, 2022
Mailing address902 W Main St, West Frankfort, IL 62896-2210

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