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

Karolyn Teufel, MD

Individual provider Internal Medicine Physician · NPI 1790759264

Karolyn Teufel, MD practises Internal Medicine in Washington, District of Columbia. Qualified in 2003, 23 years ago. Practices with Medical Faculty Associates, Inc, a 684-clinician group and accepts Medicare assignment. Licensed in District of Columbia.

Years since qualifying
23
Licensed in
DC
In the registry since
2006
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

900 23rd St NW
Washington, DC 20037-2342
Phone: (202) 715-5109
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Internal Medicine Physician (primary) Taxonomy 207R00000X · Licence MD040414 (DC)

Record details

NPI number1790759264
Entity typeIndividual (Type 1)
GenderFemale
Credentials MD
Sole proprietorYes
NPI enumeratedFebruary 13, 2006
Last updated in NPPESJanuary 17, 2026
Certification dateJanuary 17, 2026

Medicare enrollment

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

Medicare specialtyINTERNAL MEDICINE
Medical schoolOTHER
Graduated 2003 (23 years in practice)
Group practice Medical Faculty Associates, Inc — 684 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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 patients109
Services billed 344 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.

Colleagues at Medical Faculty Associates, Inc

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 684 clinicians in the practice; 12 are shown here.

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