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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).

Patient Reviews

Patient comments (17)

The overall average patient rating of Dr. Gregory Rosen, Reproductive Endocrinologist is Good. Dr. Rosen has been reviewed by 36 patients who have provided 17 comments. The rating is 4 out of 5 stars.

Patient Ratings
Ease of Appointment 4.3
Promptness 4.3
Courteous Staff 4.4
Accurate Diagnosis 4.4
Bedside Manner 4.4
Spends Time with Me 4.4
Follows Up After Visit 4.3

Specialties & Research

Dr. Gregory Rosen, MD is board certified in Obstetrics & Gynecology and Reproductive Endocrinology.

  • He has special expertise in 7 areas:
  • AIDS/HIV (Acquired Immunodeficiency Syndrome)
  • Diabetes
  • HIV Infections
  • Hepatitis C
  • Hot Flashes
  • Infertility
  • Menopause

Education & Awards

Dr. Rosen graduated from University of Colorado, Denver. He has 7 awards.

Patients' Choice 5th Anniversary Award (2012 - 2015)
Patients' Choice Award (2008 - 2015)
Compassionate Doctor Award - 5 Year Honoree (2013)
Compassionate Doctor Recognition (2009 - 2013, 2015)
Top 10 Doctor - Metro Area (2014)
Los Angeles Metro Area
Reproductive Endocrinologist
Top 10 Doctor - State (2014)
Reproductive Endocrinologist
On-Time Doctor Award (2009, 2014 - 2015)


Dr. Rosen has 6 hospital affiliations:

  • Long Beach Memorial Medical Center 
  • Anaheim Memorial Medical Center 


  • Spanish

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Additional Information
Dr. Gregory F Rosen MD is a male Infectious Disease Specialist, has 31 years of experience and practices in Obstetrics & Gynecology, Reproductive Endocrinology, and Infectious Disease.
Where does Dr. Gregory F. Rosen practice?
Dr. Gregory Rosen has 3 office locations.
Dr. Gregory Rosen practices Obstetrics & Gynecology, Reproductive Endocrinology, and Infectious Disease near Westminster, CA.
Additional practice locations include: Redondo Beach, CA and Los Angeles, CA.
See Westminster Obstetricians & Gynecologists, Westminster Endocrinologists, and Westminster Infectious Disease Doctors.