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

MS. Elena Keller, CRNP

Individual provider Family Nurse Practitioner · NPI 1215947015

MS. Elena Keller, CRNP is a Nurse Practitioner in Baltimore, Maryland. Qualified in 1998, 28 years ago. Practices with Shock Trauma Associates PA, a 262-clinician group and accepts Medicare assignment. Licensed in Maryland.

Years since qualifying
28
Licensed in
MD
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

22 S Greene St
Baltimore, MD 21201-1544 Not confirmed with CMS for 18 years — call before visiting
Phone: (410) 328-6704
Fax: (410) 328-4124
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 R118324 (MD)

Record details

NPI number1215947015
Entity typeIndividual (Type 1)
GenderFemale
Credentials CRNP
Sole proprietorNo
NPI enumeratedAugust 8, 2006
Last updated in NPPESMarch 21, 2008

Medicare enrollment

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

Medicare specialtyNURSE PRACTITIONER
Medical schoolOTHER
Graduated 1998 (28 years in practice)
Group practice Shock Trauma Associates Pa — 262 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations2 on file with Medicare

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients57
Services billed 265 a service is one billed item, such as a visit, a test or a procedure
Average patient age72

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician. Those with a page here are linked.

Colleagues at Shock Trauma Associates PA

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 262 clinicians in the practice; 12 are shown here.

Other providers in Baltimore