Summary

Dr. Mathewson graduated from the Icahn School of Medicine At Mount Sinai in 2005. She works in Ossining, NY and 1 other location and specializes in Psychiatry. Dr. Mathewson is affiliated with Bellevue Hospital.

Quick Facts

  • accepting new patients
  • 5
  • 21 years of experience
  • Icahn School Of Medicine At Mount Sinai
  • 1 written review
  • 1 specialty
  • 12 areas of expertise
  • 1 hospital affiliation
  • 2 office locations
  • Female

Patients’ Perspective

  • Gave an accurate diagnosis
  • Had a good bedside manner
  • Spent time with me

Office Locations

Dr. Karen Ashby Mathewson has 2 locations

Open Door Family Medical Center

165 Main StOssining, NY 10562
Mon8:30 am - 7:00 pm
Tue9:00 am - 7:00 pm
Wed8:30 am - 7:00 pm
Thu8:30 am - 7:00 pm
Fri8:30 am - 5:00 pm
Sat8:30 am - 2:00 pm
SunClosed

Nyc Health And Hospitals Bellevue

462 1st AveNew York, NY 10016

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Dr. Karen Ashby Mathewson, MDDr. Jane Eisen, MDSamantha Blair, PMHNP-BC, NPChristella Medozile, NP, PMHNP-BC
PsychiatryPsychiatryPsychiatryPsychiatry
Accepts New Patients Accepts New Patients Accepts New Patients Accepts New Patients
21 Years of Experience 49 Years of Experience 6 Years of Experience 11 Years of Experience
No Virtual Visit Option Virtual Visit Available Virtual Visit Available Virtual Visit Available
Speaks English Speaks English Speaks French, English
Ossining , NYBoston , MANew York , NYNew York , NY
Med School: Icahn School Of Medicine At Mount Sinai Med School: New York University Med School: SUNY Downstate Medical School Med School: Long Island University Brooklyn
Current Profile
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Insurance Plans Accepted by Dr. Karen Ashby Mathewson

  • Accepts Medicare
  • Accepts Medicaid

Medical Specialties

Dr. Karen Ashby Mathewson has the following specialty

Specialty Expertise

Dr. Karen Ashby Mathewson has the following 12 areas of expertise

  • Attention Deficit Disorder (ADD) / Attention Deficit Hyperactivity Disorder (ADHD)
  • Attention-Deficit/Hyperactivity Disorder (ADHD)
  • Bipolar Disorder
  • Depression
  • Depressive Disorder
  • Insomnia
  • Manic Depressive Disorder
  • Mental Illness
  • Mood Disorders
  • Personality Disorder
  • Schizophrenia
  • Sleep Disorders

Certifications, License, & Education

21 Years Experience

Dr. Karen Ashby Mathewson holds an expired medical license in the state of New York.

Medical License

Medical Doctor with an expired medical license in the state of New York that expired in 2026.

Education & Training

Medical School

Graduated from Icahn School Of Medicine At Mount Sinai in 2005.

NPI Number

Dr. Mathewson's NPI number is 1407054562.

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Frequently Asked Questions

Where is Dr. Karen Mathewson's office located?
Dr. Karen Mathewson's office is located at 165 Main St, Ossining, NY, 10562.
Does Dr. Karen Mathewson accept my insurance?
You can see the insurance plans that Dr. Karen Mathewson accepts on their Vitals profile.
Which hospitals is Dr. Karen Mathewson affiliated with?
Dr. Karen Mathewson is affiliated with Bellevue Hospital.
Is Dr. Karen Mathewson accepting new patients?
Dr. Karen Mathewson is accepting new patients on Vitals. View Dr. Karen Mathewson's profile on Vitals to make an appointment.
Does Dr. Karen Mathewson accept virtual/telehealth appointments?
Dr. Karen Mathewson has not indicated that they accept virtual/teleheatlh appointments. Contact their office through their Vitals profile to check for availability.

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