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

Dr. Catherine Brittain Callahan, MD

Individual provider Internal Medicine Physician · NPI 1407870926

Dr. Catherine Brittain Callahan, MD practises Internal Medicine in Charlotte, North Carolina. Graduated from Medical College of Georgia School of Medicine in 2006, 20 years ago. Practices with Tryon Medical Partners, PLLC, a 137-clinician group, works from 2 locations and offers telehealth. Licensed in North Carolina and South Carolina.

Years since qualifying
20
Trained at
Medical College of Georgia School of Medicine
Licensed in
NC, SC
In the registry since
2006
Specialties on file
2
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

10635 Park Rd Ste I
Charlotte, NC 28210-8408
Phone: (704) 495-6334
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (1)

  • 200 South College Street, Charlotte, NC 28202-2067 — (704) 302-8700

Specialties & licences

Internal Medicine Physician (primary) Taxonomy 207R00000X · Licence 200101316 (NC)
Internal Medicine Physician Taxonomy 207R00000X · Licence 92028 (SC)

Record details

NPI number1407870926
Entity typeIndividual (Type 1)
GenderFemale
Credentials MD
Sole proprietorNo
NPI enumeratedJuly 27, 2006
Last updated in NPPESMay 6, 2026
Certification dateMay 6, 2026

Medicare enrollment

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

Medicare specialtyINTERNAL MEDICINE
Medical schoolMEDICAL COLLEGE OF GEORGIA SCHOOL OF MEDICINE
Graduated 2006 (20 years in practice)
Group practice Tryon Medical Partners, Pllc — 137 clinicians
Accepts Medicare assignment Not indicated
TelehealthOffers telehealth services
Practice locations6 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 patients426
Services billed 3,888 a service is one billed item, such as a visit, a test or a procedure
Average patient age76

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.

Payments from drug and device companies, 2025

Drug and device makers are required by federal law (the Physician Payments Sunshine Act) to report what they pay or give to clinicians, and CMS publishes the reports as Open Payments. This is the 2025 program year. A report is a record of a payment, not an allegation of anything, and many are small items such as meals. Only general payments are listed here; research payments and ownership or investment interests are reported separately by CMS and are not shown.

Food and Beverage $432 20 payments · a meal or drink at a meeting or visit, not a fee

Each amount is the sum of what companies reported for that kind of payment in 2025, rounded to the dollar. Not all of it is income to the clinician: a meal is not a fee, a charitable contribution goes to a charity, and a royalty or an acquisition payment is not a salary.

Check a report, or dispute one, at the source in CMS’s own tool, Open Payments. Corrections go through CMS’s dispute process. This site removes a home address on request and asks for no proof, because that is privacy; it will not remove an accurate payment report on request, because that is a statutory public disclosure.

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician.

Colleagues at Tryon Medical Partners, PLLC

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 137 clinicians in the practice; 12 are shown here.

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