Male 72 years


Dr. Ronald K Willenborg, MD



Internal Medicine   -  New Jersey,  Upper Montclair

 Overview

Dr. Ronald K Willenborg, MD works in Upper Montclair, New Jersey is a specialist in Internal Medicine and graduated UMDNJ-- New Jersey Medical School in 1977. Dr. Willenborg is affiliated with Mountainside Hospital and practicing for 46 years

 Specialties

  • Internal Medicine

 Board Certifications

  • Board Certified by the American Board of Internal Medicine

 Years Since Graduation

  • 46

 State License

  • New Jersey

 Education & Training

Medical School

UMDNJ-- New Jersey Medical School

Newark, NJ, United States

Graduated: 1977

Residency Hospital

Umdnj-University Hospital

Newark, NJ, USA

Year completed: 1980

 Awards

Awards for Dr. Ronald K Willenborg, MD are not present.

 Dr. Willenborg Reviews

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 Office Locations


Primary location

 Ronald K Willenborg MD
543 Valley Road
New Jersey (NJ)
Upper Montclair
7043
 Phone:(973) 746-6466
Additional data:
Free Standing Surgery Center?    No
Office Volume:    25 patients per day
Performs Procedures On Site?    No

Other Office Locations

 Ronald K Willenborg MD
543 Valley Road Suite 4
New Jersey (NJ)
Upper Montclair
7043
 Phone:(973) 746-6466

Accepting New Patients

  • No
* Please verify this information when scheduling an appointment.

 Map & Directions



Ronald K Willenborg MD, 543 Valley Road, Upper Montclair, New Jersey (NJ), 7043




 Insurances Accepted (check insurance plans)

  • Advance EPO
  • Aetna
  • Blue Card PPO
  • Blue Cross Blue Shield
  • Choice Care PPO
  • Choice Plus POS
  • Choice Plus POS II
  • Cigna
  • Cigna PPO
  • Commercial Insurance Company
  • Direct Access
  • First Health (Coventry Health Care)
  • First Health (Coventry Health Care) PPO
  • Freedom Plan
  • Great West Healthcare-Cigna PPO
  • Horizon Blue Cross Blue Shield HMO
  • Horizon Blue Cross Blue Shield of New Jersey
  • Horizon Blue Cross Blue Shield POS
  • Horizon Blue Cross Blue Shield PPO
  • Humana
  • Medicare
  • Medicare MCR
  • MultiPlan
  • MultiPlan PPO
  • Navigate HMO
  • Navigate POS
  • Options PPO
  • Oxford Health Plans
  • PHCS Network PPO
  • United Healthcare
  • UnitedHealthCare

* Please verify this information when scheduling an appointment.

 Blog Posts

Blog Posts for Dr. Ronald K Willenborg, MD are not present.

 Patients Questions

Patients questions for Dr. Ronald K Willenborg, MD are not present.

 Affiliated Hospitals


Mountainside Hospital photo


Mountainside Hospital

1 Bay Avenue New Jersey NJ, Montclair, 7042

Mountainside Hospital is a hospital located in Montclair, NJ. Procedures/Diagnosis costs are above the state average in 4 of 11 procedures. Length of Stay is at the state average in 9 of 11 procedures.



  •  Latest reviews for Internal Medicine specialists

  • Dr. C. is a pleasant, professional caring and fun doctor. Answered all my questions on a keep it simple level and explained everything. He took his time. I will refer them when needed. What a great group!
    07 February 2024
    (6)
  • He is the best if you need help with panic attacks. He fixed up my medication and I feel better.
    31 January 2024
    (40)
  • Dr. Jungblut and staff are all professional, fun, conscientious. Been going here for a long time. My children and grandchildren now see Dr. Jungblut too.
    24 January 2024
    (7)
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