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

Catherine Tierney, CRNP

Individual provider Family Nurse Practitioner · NPI 1699127936

Catherine Tierney, CRNP is a Nurse Practitioner in Gaithersburg, Maryland. Qualified in 2016, 10 years ago. Practices with Medstar Medical Group II LLC, a 3,717-clinician group, accepts Medicare assignment and offers telehealth. Licensed in District of Columbia, Maryland and Virginia.

Years since qualifying
10
Licensed in
DC, MD, VA
In the registry since
2016
Specialties on file
3
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

12111 Darnestown Rd
Gaithersburg, MD 20878-3211
Phone: (301) 926-3020
Fax: (215) 829-5855
Show map & directions

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

Specialties & licences

Family Nurse Practitioner (primary) Taxonomy 363LF0000X · Licence R213930 (MD)
Family Nurse Practitioner Taxonomy 363LF0000X · Licence RN1023485 (DC)
Family Nurse Practitioner Taxonomy 363LF0000X · Licence 0024184998 (VA)

Record details

NPI number1699127936
Entity typeIndividual (Type 1)
GenderFemale
Credentials CRNP
Sole proprietorNo
NPI enumeratedJuly 11, 2016
Last updated in NPPESSeptember 16, 2022
Certification dateSeptember 16, 2022
Mailing address12111 Darnestown Rd, Gaithersburg, MD 20878-3211

Medicare enrollment

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

Medicare specialtyNURSE PRACTITIONER
Medical schoolOTHER
Graduated 2016 (10 years in practice)
Group practice Medstar Medical Group Ii Llc — 3717 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services
Practice locations5 on file with Medicare

Other providers in Gaithersburg