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

Mr. John J Grandner, CRNP

Individual provider Nurse Practitioner · NPI 1699843094

Mr. John J Grandner, CRNP is a Nurse Practitioner in Rockville, Maryland. Licensed in District of Columbia. Registered with an NPI since 2006.

Licensed in
DC
In the registry since
2006
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

2101 E Jefferson St
Rockville, MD 20852-4908
Phone: (202) 898-5104
Fax: (202) 898-5474
Show map & directions

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

Specialties & licences

Nurse Practitioner (primary) Taxonomy 363L00000X · Licence RN47957 (DC)

Record details

NPI number1699843094
Entity typeIndividual (Type 1)
GenderMale
Credentials CRNP
Sole proprietorNo
NPI enumeratedDecember 1, 2006
Last updated in NPPESJanuary 5, 2012

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