Summary

Dr. Robert Heymann is an endocrinologist specializing in diabetes and metabolism, with additional expertise in internal medicine. He earned his medical degree from University of California Irvine College of Medicine and has been practicing for 27 years. Dr. Heymann communicates with patients in English.

Dr. Heymann practices at Kaiser Foundation Hospital in Fontana, California. He treats patients with various forms of diabetes, including Type 1 diabetes in children and teens as well as diabetes in older adults. His diagnostic capabilities include CT scans and specialized pancreas imaging. Patients have given him an average rating of 5.0 on Vitals.

Overview based on verified provider data

Quick Facts

  • 5
  • 27 years of experience
  • 3 insurance plans accepted
  • speaks English
  • University Of California Irvine College Of Medicine
  • 1 written review
  • 2 specialties
  • 16 areas of expertise
  • 2 board certifications
  • 1 hospital affiliation
  • 2 office locations
  • Male

Office Locations

Dr. Robert Sigmar Heymann has 2 locations

Kaiser Foundation Hospital

9961 Sierra AveFontana, CA 92335

Kaiser Permanente

9985 Sierra AveFontana, CA 92335

Compare with Similar Doctors

Dr. Robert Sigmar Heymann, MD
Dr. Karn Danpongchareon
Dr. Sherri Lynn Johnson
Dr. Donna Marie Lien
Dr. Robert Sigmar Heymann, MDDr. Karn DanpongchareonDr. Sherri Lynn JohnsonDr. Donna Marie Lien
Endocrinology, Diabetes & MetabolismAnesthesiologyPediatricsAnesthesiology
27 Years of Experience 32 Years of Experience 36 Years of Experience 12 Years of Experience
No Virtual Visit Option No Virtual Visit Option No Virtual Visit Option No Virtual Visit Option
Speaks English
Fontana , CAAlta Loma , CADIAMOND BAR , CAAnaheim , CA
Med School: University Of California Irvine College Of Medicine Med School: Siriraj Hospital Faculty Of Medicine Med School: David Geffen School Of Medicine At Ucla Med School: University Of California San Diego School Of Medicine
Current Profile
View Profile View Profile View Profile

Insurance Plans Accepted by Dr. Robert Sigmar Heymann

  • Kaiser Permanente
  • Kaiser Permanente - Medicaid (Managed)
  • L.A. Care Health Plan - HMO

Medical Specialties

Dr. Robert Sigmar Heymann has the following 2 specialties

Specialty Expertise

Dr. Robert Sigmar Heymann has the following 16 areas of expertise

  • Acromegaly
  • Addison Disease
  • Adrenal Gland Diseases
  • Cushing Disease
  • Diabetes
  • Diabetes (Types I & II)
  • Diabetes Complications
  • Diabetes, Type 2
  • Fatigue
  • Gland Issues
  • Hormones
  • Hyperthyroidism
  • Hypopituitarism
  • Hypothyroidism
  • Internal Medicine
  • Thyroid Diseases

Certifications, License, & Education

27 Years Experience

Education & Training

Medical School

Graduated from University Of California Irvine College Of Medicine in 1999.

NPI Number

Dr. Heymann's NPI number is 1114094026.

Similar doctors

Frequently Asked Questions

Is Dr. Robert Heymann accepting new patients?
Dr. Robert Heymann has not indicated that they accept new patients. Contact their office through their Vitals profile to check for availability.
Does Dr. Robert Heymann accept my insurance?
You can see the insurance plans that Dr. Robert Heymann accepts on their Vitals profile.
Which hospitals is Dr. Robert Heymann affiliated with?
Dr. Robert Heymann is affiliated with Kaiser Foundation Hospital.
Where is Dr. Robert Heymann's office located?
Dr. Robert Heymann's office is located at 9961 Sierra Ave, Fontana, CA, 92335.
Does Dr. Robert Heymann accept virtual/telehealth appointments?
Dr. Robert Heymann has not indicated that they accept virtual/teleheatlh appointments. Contact their office through their Vitals profile to check for availability.

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.