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

Rosemary Janssen Barnhart, NP

Individual provider Medical-Surgical Registered Nurse · NPI 1215820998

Rosemary Janssen Barnhart, NP is a Nurse Practitioner in Chula Vista, California. Qualified in 2025, 1 year ago. Practices with Joel J. Smith, MD Inc, a 4-clinician group and accepts Medicare assignment. Licensed in California.

Years since qualifying
1
Licensed in
CA
In the registry since
2025
Specialties on file
2
What do these letters mean?
NP — Nurse Practitioner
An advanced practice nurse who can diagnose, treat and in most states prescribe.

See every abbreviation used in this directory →

Practice location Address checks out

750 Medical Center Ct Ste 6
Chula Vista, CA 91911-6634
Phone: (858) 278-8110
Show map & directions

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

Specialties & licences

Acute Care Nurse Practitioner (primary) Taxonomy 363LA2100X · Licence 95035720 (CA)
Medical-Surgical Registered Nurse Taxonomy 163WM0705X · Licence 95337925 (CA)

Record details

NPI number1215820998
Entity typeIndividual (Type 1)
GenderFemale
Credentials NP
Sole proprietorNo
NPI enumeratedMay 31, 2025
Last updated in NPPESJuly 11, 2025
Certification dateJuly 11, 2025

Medicare enrollment

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

Medicare specialtyNURSE PRACTITIONER
Medical schoolOTHER
Graduated 2025 (1 years in practice)
Group practice Joel J. Smith, M.D. Inc. — 4 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount