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Endocrinologist (diabetes, hormones), Obstetrician & Gynecologist (OB/GYN)
34 years of experience
Accepting new patients
Video profile
License & Identifications

A medical license is required for a doctor to practice medicine in a particular state. Requirements vary by state but most require, at a minimum, post-graduate training in the doctor’s specific specialty. An NPI number is a national identifier unique to an individual health care provider and is managed by the Center for Medicare & Medicaid Services (CMS).

Learn more about Dr. Ralf Zimmermann:

View the full profile to get information on:

  1. Qualifications
  2. What's important to you

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Patient Reviews

Patient comments (2)

The overall average patient rating of Dr. Ralf Zimmermann is Excellent. Dr. Zimmermann has been reviewed by 4 patients who have provided 2 comments. The rating is 4.5 out of 5 stars.

Patient Ratings
Ease of Appointment 3.7
Promptness 3.9
Courteous Staff 3.7
Accurate Diagnosis 4.5
Bedside Manner 4.3
Spends Time with Me 4.5
Follows Up After Visit 4.0

Specialties & Research

  • He has special expertise in 15 areas:
  • Adolescent Medicine
  • Amenorrhea
  • Artificial Insemination
  • Assisted Reproductive Techniques
  • Diabetes
  • Endometriosis
  • Female Infertility
  • Fertility
  • Hormone Replacement Therapy (HRT)
  • In Vitro Fertilization (IVF)
  • Laproscopic Surgery (Laparoscopy)
  • Male Infertility
  • Menopause
  • Ovulation Induction
  • Reproductive Medicine

Education & Awards

Dr. Zimmermann graduated from Universitaet Hamburg.


Dr. Zimmermann has 11 hospital affiliations:

  • NewYork-Presbyterian / Weill Cornell 
  • New York Presbyterian Hospital / Columbia 


  • Chinese
  • French
  • German
  • Hebrew
  • Korean
  • Spanish

> > > > Dr. Ralf Zimmermann, MD

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Additional Information
Dr. Ralf Zimmermann MD is a male Reproductive Endorinologist, has 34 years of experience and practices in Reproductive Endocrinology.
Where does Dr. Ralf Zimmermann practice?
Dr. Ralf Zimmermann has 1 office location.
Dr. Ralf Zimmermann practices Reproductive Endocrinology near New York, NY.
See New York Endocrinologists.