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

Mr. William Leon Janik, CRNP

Individual provider Adult Health Nurse Practitioner · NPI 1497016166

Mr. William Leon Janik, CRNP is an Adult Health Nurse Practitioner in Bethesda, Maryland. Licensed in Maryland. Registered with an NPI since 2012.

Licensed in
MD
In the registry since
2012
What do these letters mean?
CRNP — Certified Registered Nurse Practitioner
The title Pennsylvania and some other states use for a nurse practitioner.

See every abbreviation used in this directory →

Practice location Address checks out

8600 Old Georgetown Rd Suburban Hospital Emergency Dept
Bethesda, MD 20814-1422
Phone: (301) 896-2578
Show map & directions

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

Specialties & licences

Adult Health Nurse Practitioner (primary) Taxonomy 363LA2200X · Licence R170988 (MD)

Record details

NPI number1497016166
Entity typeIndividual (Type 1)
GenderMale
Credentials CRNP
Sole proprietorNo
NPI enumeratedMay 30, 2012
Last updated in NPPESMay 30, 2012

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