Summary

John Gregory Mears specializes in oncology and hematology, bringing over five decades of medical expertise to cancer and blood disorder care. They graduated from Columbia University College of Physicians & Surgeons and have dedicated 53 years to helping patients navigate complex blood conditions and cancer treatments. They are fluent in English.

Mears practices at NewYork Presbyterian Hudson Valley Hospital and other locations throughout Cortlandt Manor and New York. They focus on treating conditions such as iron deficiency anemia, chronic lymphocytic leukemia, and anemia from heavy bleeding. Their procedural expertise includes blood tests, complete blood counts, and white blood cell differentials to help diagnose and monitor patient health. Patients have given them an average rating of 4.2 out of 5 stars.

Overview based on verified provider data

Quick Facts

  • 4.2
  • 53 years of experience
  • speaks English
  • Columbia University College Of Physicians & Surgeons
  • 4 written reviews
  • 2 specialties
  • 18 areas of expertise
  • 2 board certifications
  • 1 hospital affiliation
  • 5 office locations

Patients’ Perspective

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

Office Locations

Dr. John Gregory Mears has 5 locations

The New York and Presbyterian Hospital

161 Fort Washington AveNew York, NY 10032
Mon8:00 am - 5:00 pm
Tue8:00 am - 5:00 pm
Wed8:00 am - 5:00 pm
Thu8:00 am - 5:00 pm
Fri8:00 am - 5:00 pm
SatClosed
SunClosed

Columbia University Medical Center Hematology Oncology

161 Fort Washington Ave Fl 9New York, NY 10032
Mon9:00 am - 5:00 pm
Tue9:00 am - 5:00 pm
Wed9:00 am - 5:00 pm
Thu9:00 am - 5:00 pm
Fri9:00 am - 5:00 pm
SatClosed
SunClosed

Nyp Hudson Valley Comprehensive Cancer Center

1978 Crompond Rd Ste G1Cortlandt Manor, NY 10567
Mon8:30 am - 5:00 pm
Tue8:30 am - 5:00 pm
Wed8:30 am - 5:00 pm
Thu8:30 am - 5:00 pm
Fri8:30 am - 5:00 pm
SatClosed
SunClosed

Compare with Similar Doctors

Dr. John Gregory Mears
Dr. Nancy Mills, MD
Dr. Andrew H Lipsky, MD
Nell Daly Timmer, FNP
Dr. John Gregory MearsDr. Nancy Mills, MDDr. Andrew H Lipsky, MDNell Daly Timmer, FNP
OncologyOncologyOncologyOncology
Accepts New Patients Accepts New Patients
4.2 
3.8 
53 Years of Experience 39 Years of Experience 13 Years of Experience
No Virtual Visit Option Virtual Visit Available Virtual Visit Available Virtual Visit Available
Speaks English Speaks English Speaks English, Spanish
Cortlandt Manor , NYBronxville , NYNew York , NYCortlandt Manor , NY
Med School: Columbia University College Of Physicians & Surgeons Med School: Icahn School Of Medicine At Mount Sinai Med School: Rutgers Robert Wood Johnson Medical School
Current Profile
View Profile View Profile View Profile

Insurance Plans Accepted by Dr. John Gregory Mears

Be sure to verify insurance information directly with your doctor's office, as it may undergo frequent changes.

Medical Specialties

Dr. John Gregory Mears has the following 2 specialties

Specialty Expertise

Dr. John Gregory Mears has the following 18 areas of expertise

  • Acute Myeloid Leukemia
  • Blood Cancer
  • Bone Marrow Transplant
  • Breast Cancer
  • Chemotherapy
  • Chronic B-Cell Lymphocytic Leukemia
  • Chronic Myeloid Leukemia
  • Chronic Myelomonocytic Leukemia
  • Deep Vein Thrombosis
  • Hematology
  • Hepatitis C
  • Iron-Deficiency Anemia
  • Leukemia
  • Lymphoma
  • Multiple Myeloma (Cancer of Plasma Cells)
  • Myelofibrosis
  • Myeloma
  • Sickle Cell Anemia

Certifications, License, & Education

53 Years Experience

Dr. John Gregory Mears 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 2025.

Education & Training

Medical School

Graduated from Columbia University College Of Physicians & Surgeons in 1973.

NPI Number

Dr. Mears' NPI number is 1619057247.

Similar Doctors

Frequently Asked Questions

Where is Dr. John Gregory Mears's office located?
Dr. John Gregory Mears's office is located at 1980 Crompond Rd, Cortlandt Manor, NY, 10567.
Is Dr. John Gregory Mears accepting new patients?
Dr. John Gregory Mears has not indicated that they accept new patients. Contact their office through their Vitals profile to check for availability.
Which hospitals is Dr. John Gregory Mears affiliated with?
Dr. John Gregory Mears is affiliated with Newyork Presbyterian Hudson Valley Hospital.
What languages does Dr. John Gregory Mears speak?
Dr. John Gregory Mears speaks English.
How can I make an appointment with Dr. John Gregory Mears?
You can find contact information for Dr. John Gregory Mears here on Vitals.

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.