Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of October 4, 2026.

Joanna Klubo-Gwiezdzinska, MD, PHD

Individual provider Student in an Organized Health Care Education/Training Program · NPI 1912237058

Joanna Klubo-Gwiezdzinska, MD, PHD practises Endocrinology in Bethesda, Maryland. Qualified in 2001, 25 years ago. Practices with Johns Hopkins Community Physicians, Inc, a 765-clinician group and accepts Medicare assignment. Licensed in District of Columbia.

Years since qualifying
25
Licensed in
DC
In the registry since
2010
Specialties on file
2
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.
PHD — Doctor of Philosophy
A research doctorate. In healthcare it usually sits alongside a clinical licence.

See every abbreviation used in this directory →

Practice location Address checks out

Student / training record This NPI belongs to someone enrolled in a health care training programme. It carries no licence and no practice of its own, so no address or phone number is published for it.

Bethesda, MD

Specialties & licences

Endocrinology, Diabetes & Metabolism Physician (primary) Taxonomy 207RE0101X · Licence MD043529 (DC)
Student in an Organized Health Care Education/Training Program Taxonomy 390200000X

Record details

NPI number1912237058
Entity typeIndividual (Type 1)
GenderFemale
Credentials MD , PHD
Sole proprietorNo
NPI enumeratedJanuary 13, 2010
Last updated in NPPESMay 15, 2023
Certification dateMay 15, 2023

Medicare enrollment

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

Medicare specialtyENDOCRINOLOGY
Medical schoolOTHER
Graduated 2001 (25 years in practice)
Group practice Johns Hopkins Community Physicians, Inc — 765 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 patients86
Services billed 189 a service is one billed item, such as a visit, a test or a procedure
Average patient age74

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.

Colleagues at Johns Hopkins Community Physicians, Inc

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 765 clinicians in the practice; 12 are shown here.

Other providers in Bethesda