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In Manhattan, Dr. Catherine Diefenbach works as a medical oncologist at New York University.
She graduated from Perelman School of Medicine at the University of Pennsylvania in 2001, which means 25 years have passed since medical school.
You'll find Dr. Diefenbach at 111 Broadway, New York, NY 10006. Call (212) 263-9700 to schedule. Other listed locations: 240 E 38th St, New York, NY 10016; 530 1st Ave, New York, NY 10016. Dr. Diefenbach accepts Medicare assignment, which means she takes the Medicare-approved amount as full payment for covered services. Video (telehealth) appointments are listed as an option.
Dr. Diefenbach is affiliated with NYU Langone Hospitals.
Have you been a patient of Dr. Diefenbach? A short, fair review — what went well, what didn't — helps the next person choosing a medical oncologist in Manhattan.
Dr. Diefenbach at a glance
- Specialty
- Medical oncologist
- Credentials
- MD
- Practice
- New York University
- Address
- 111 Broadway, New York, NY 10006
- Phone
- (212) 263-9700
- Other locations
- 240 E 38th St, New York, NY 10016; 530 1st Ave, New York, NY 10016
- Medical school
- Perelman School of Medicine at the University of Pennsylvania (2001)
- Hospital affiliations
- NYU Langone Hospitals
- Medicare assignment
- Accepts
- Telehealth
- Available
- NPI number
- 1982864039
- NY license no.
- 231212
Medicare, Medicaid and hospitals
- Medicare patients (2024)
- 152 people with traditional Medicare, average age 75
- Medicare quality score (MIPS 2024)
- 91 out of 100 — reported through the group practice
- New York Medicaid
- Enrolled fee-for-service provider since 2009. Medicaid managed-care plans keep their own networks, so check with your plan.
- Hospital pages
- NYU Langone Hospitals
Medicare figures cover people with traditional (fee-for-service) Medicare only; services billed for fewer than 11 patients are not published.
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Frequently Asked Questions
With New York University, at 111 Broadway, New York, NY 10006.
Call the office at (212) 263-9700.
Yes — Dr. Diefenbach accepts Medicare assignment, taking the Medicare-approved amount as full payment for covered services.
NYU Langone Hospitals.
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