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

Karen Patricia Seiter, MD

Individual provider Hematology (Internal Medicine) Physician · NPI 1265494124

Karen Patricia Seiter, MD is a Hematology/Oncology in Hawthorne, New York. Graduated from New York Medical College in 1985, 41 years ago. Practices with Nuvance Health Medical Practice CT Inc, a 741-clinician group, accepts Medicare assignment and offers telehealth. Licensed in Connecticut.

Years since qualifying
41
Trained at
New York Medical College
Licensed in
CT
In the registry since
2006
Specialties on file
3
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

19 Bradhurst Ave Ste 2100
Hawthorne, NY 10532-2140
Phone: (914) 493-8375
Fax: (914) 347-1832
Show map & directions

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Hematology & Oncology Physician (primary) Taxonomy 207RH0003X · Licence 83187 (CT)
Hematology (Internal Medicine) Physician Taxonomy 207RH0000X · Licence 83187 (CT)
Medical Oncology Physician Taxonomy 207RX0202X · Licence 83187 (CT)

Record details

NPI number1265494124
Entity typeIndividual (Type 1)
GenderFemale
Credentials MD
Sole proprietorNo
NPI enumeratedApril 5, 2006
Last updated in NPPESOctober 10, 2025
Certification dateOctober 10, 2025

Medicare enrollment

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

Medicare specialtyHEMATOLOGY/ONCOLOGY
Medical schoolNEW YORK MEDICAL COLLEGE
Graduated 1985 (41 years in practice)
Group practice Nuvance Health Medical Practice Ct Inc — 741 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services

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