3
1 Rating
Summary
Dr. Katherine Seibert is an internal medicine physician and oncologist who brings five decades of medical experience to her practice. She earned her medical degree from Creighton University School of Medicine and has dedicated her career to providing comprehensive internal medicine care while specializing in cancer treatment. Dr. Seibert is fluent in both English and Spanish, allowing her to serve diverse patient communities.
Dr. Seibert practices at locations in Haverstraw and Peekskill, New York, with hospital privileges at Garnet Health Medical Center Catskills Harris. She focuses on managing conditions such as high cholesterol in young patients and obesity. Her expertise includes performing essential diagnostic tests like complete blood counts and diabetes monitoring through A1c testing and home glucose monitoring. Patients rate Dr. Seibert 3.0 out of 5 stars on average.
Dr. Seibert practices at locations in Haverstraw and Peekskill, New York, with hospital privileges at Garnet Health Medical Center Catskills Harris. She focuses on managing conditions such as high cholesterol in young patients and obesity. Her expertise includes performing essential diagnostic tests like complete blood counts and diabetes monitoring through A1c testing and home glucose monitoring. Patients rate Dr. Seibert 3.0 out of 5 stars on average.
Overview based on verified provider data
Quick Facts
- accepting new patients
- 50 years of experience
- speaks English, Spanish
- Creighton University School Of Medicine
- 2 specialties
- 8 areas of expertise
- 2 board certifications
- 1 hospital affiliation
- 2 office locations
- Female
Office Locations
Dr. Katherine Seibert has 2 locationsHaverstraw Health Center
31 W Broad St Fl 3Haverstraw, NY 10927Mon9:00 am - 5:00 pm
Tue8:30 am - 7:00 pm
Wed9:00 am - 5:00 pm
Thu8:30 am - 7:00 pm
Fri9:00 am - 5:00 pm
SatClosed
SunClosed
Sun River Health Jeannette J Phillips Urgent Care
1037 Main StPeekskill, NY 10566 Tel: (914) 402-7400
Mon8:00 am - 8:00 pm
Tue8:00 am - 8:00 pm
Wed8:00 am - 8:00 pm
Thu8:00 am - 8:00 pm
Fri8:00 am - 8:00 pm
Sat9:00 am - 5:00 pm
SunClosed
Compare with Similar Doctors
 |  |  |  |
| Dr. Katherine Seibert, MD | Eric Harker | Dr. Eric Yoon, MD | Natalie Howard, MSN, DNP |
| Internal Medicine | Internal Medicine | Internal Medicine | Internal Medicine |
| Accepts New Patients | Accepts New Patients | Accepts New Patients | Accepts New Patients |
| 50 Years of Experience | 25 Years of Experience | 6 Years of Experience | |
| No Virtual Visit Option | Virtual Visit Available | Virtual Visit Available | Virtual Visit Available |
| Speaks English, Spanish | Speaks English | Speaks English | Speaks English |
| Haverstraw , NY | Lyons , CO | New York , NY | New York City , NY |
| Med School: Creighton University School Of Medicine | Med School: Duke University School Of Medicine | Med School: State University of New York | |
Current Profile | View Profile | View Profile | View Profile |
Insurance Plans Accepted by Dr. Katherine Seibert
Medical Specialties
Dr. Katherine Seibert has the following 2 specialties
Specialty Expertise
Dr. Katherine Seibert has the following 8 areas of expertise
Certifications, License, & Education
50 Years Experience
Dr. Katherine Seibert 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 Creighton University School Of Medicine in 1976.
NPI Number
Dr. Seibert's NPI number is 1982616991.
Similar doctors
Frequently Asked Questions
- Is Dr. Katherine Seibert accepting new patients?
- Dr. Katherine Seibert is accepting new patients on Vitals. View Dr. Katherine Seibert's profile on Vitals to make an appointment.
- Does Dr. Katherine Seibert accept my insurance?
- You can see the insurance plans that Dr. Katherine Seibert accepts on their Vitals profile.
- Does Dr. Katherine Seibert accept virtual/telehealth appointments?
- Dr. Katherine Seibert has not indicated that they accept virtual/teleheatlh appointments. Contact their office through their Vitals profile to check for availability.
- Which hospitals is Dr. Katherine Seibert affiliated with?
- Dr. Katherine Seibert is affiliated with Garnet Health Medical Center Catskills Harris.
- Where is Dr. Katherine Seibert's office located?
- Dr. Katherine Seibert's office is located at 31 W Broad St Fl 3, Haverstraw, NY, 10927.
Ensuring Data Transparency and Trust: A Guide to Vitals Doctor Listings and Reviews
Our provider data is gathered directly from physicians and publicly available databases. Providers who verify their profiles gain the ability to update information, offering additional details about their specialties,education, treated conditions, performed procedures, and accepted insurances.
Reviews on Vitals are submitted by users only. Recognizing the valuable insights these reviews offer into a doctor's reputation, we maintain internal policies and protocols to ensure the quality and accuracy of all reviews. Importantly, providers cannot delete or alter reviews independently. Reviews can only be deleted or changed following an internal assessment by our customer service team.
Your feedback is highly valued and we encourage you to contact our support team should you encounter any issues.
