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

Catherine Eileen Demirel, PHD

Individual provider Audiologist · NPI 1396919338

Catherine Eileen Demirel, PHD is a Qualified Audiologist in Washington, District of Columbia. Qualified in 2004, 22 years ago. Practices with Mgmc LLC, a 318-clinician group and accepts Medicare assignment. Licensed in District of Columbia.

Years since qualifying
22
Licensed in
DC
In the registry since
2008
What do these letters mean?
PHD — Doctor of Philosophy
A research doctorate. In healthcare it usually sits alongside a clinical licence.

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Practice location Address checks out

2115 Wisconsin Ave NW Ste 202
Washington, DC 20007-2265 Not confirmed with CMS for 11 years — call before visiting
Phone: (202) 944-5300
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Audiologist (primary) Taxonomy 231H00000X · Licence AUD000119 (DC)

Record details

NPI number1396919338
Entity typeIndividual (Type 1)
GenderFemale
Credentials PHD
Sole proprietorNo
NPI enumeratedApril 22, 2008
Last updated in NPPESJanuary 27, 2015

Medicare enrollment

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

Medicare specialtyQUALIFIED AUDIOLOGIST
Medical schoolOTHER
Graduated 2004 (22 years in practice)
Group practice Mgmc Llc — 318 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 patients104
Services billed 211 a service is one billed item, such as a visit, a test or a procedure
Average patient age75

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.

Colleagues at Mgmc LLC

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 318 clinicians in the practice; 12 are shown here.

Other providers in Washington