Mary Elizabeth Callsen
Mary Callsen practices as part of a group internist practice in Bethesda, MD. A Ohio State University College of Medicine graduate since 1981, she brings 45+ years of experience.
Data updated 2023-01-27 on CMS NPPES
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Background & Specialty
Education, training, and specialty classification from CMS NPPES and Medicare records.
Education & Training
Ohio State University College of Medicine (Class of 1981)
Virtual Internal Medicine Care With Mary Callsen
NPPES records indicate this provider offers telehealth services. Contact the office to confirm availability and scheduling.
Schedule a virtual visit with Mary Callsen for follow-ups, medication reviews, and ongoing care — no travel to Bethesda required. The office sends a secure video link before your appointment. Most visits take 15–30 minutes.
Frequently Asked Questions
Common questions about Mary Callsen
NPI records show Dr. Callsen as active with telehealth listed in Bethesda, MD. Note: NPI status alone doesn't confirm open availability — always call ahead. Phone: (240) 235-9100.
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Medical Disclaimer: NPI Telehealth is a provider directory for informational purposes only. This page does not constitute medical advice, diagnosis, or treatment recommendations. Provider data is sourced from the CMS NPPES federal registry and public Medicare datasets. NPI Telehealth does not verify clinical qualifications beyond federal records. Data may not reflect real-time availability — always contact the provider's office directly to confirm details before seeking care.
Contact Mary Callsen
Practice Location
7315 Wisconsin Ave, Bethesda, MD 20814-3202
Mailing Address
6201 Greenleigh Ave, Baltimore, MD 21220-2004
This is a provider directory. Contact the office directly to schedule appointments.
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