Our Staff & Physicians

Our professional staff is a most valued asset of the Yuma Surgery Center.

We foster an atmosphere that encourages them to pursue continuing education and professional development.

They take pride in the fact that they are known by our patients for their warmth and compassion and they are instilled with the knowledge that medicine is an art as well as a science — and the well-being of our patients is at the heart of their focus.

Our skilled and knowledgeable nurses and technicians provide excellent care and assistance to ensure successful surgical outcomes for our patients. Our courteous and experienced office staff is in touch with our patients to ensure that our patient’s surgical procedure is optimally coordinated. We also offer a bilingual staff at our reception desk as well as our pre-op and post-op areas.


Patrick D. Aiello, M.D.

Patrick Aiello Bio

Dr. Aiello is a Senior Examiner for the American Board of Ophthalmology, the certification authority for ophthalmologists in the United States and Canada. He is an active member of the American Medical Association, the American Academy of Ophthalmology and the American Society of Cataract and Refractive Surgery.


Dr. Aiello performs several different types of eye surgery; his primary focus is cataract surgery. He has performed more than 30,000 surgeries, making him one of the countries most experienced eye surgeons.

Board Certifications

  • American Board of Ophthalmology, 1994
  • American Board of Internal Medicine, 1989

Education & Training

Medical School
  • University of Michigan, Ann Arbor
    Graduated in 1986
Residency Programs
  • Mayo Clinic, Rochester, MN.
    Ophthalmology 1989-1992
  • University of North Carolina, Chapel Hill
    Internal Medicine 1987-1989

David Goldenberg, M.D.

David Goldenberg Bio

Dr. Goldenberg is an Ophthalmologist with a subspecialty in diseases and surgery of the retina and vitreous body of the eye.

Special Interests

Dr. Goldenberg has a particular interest in the surgical repair of macular holes, macular puckers, retinal detachments, and diabetic-related eye problems.

He has published multiple peer-reviewed articles and book chapters on various topics and has lectured at several national ophthalmology meetings. Additionally, Dr. Goldenberg has received numerous honors and awards for his work.

Board Certifications

  • American Board of Ophthalmology

Education & Training

Medical School
  • UCLA School of Medicine, CA
    Graduated in 2003
Residency & Fellowship Programs
  • Residency in ophthalmology at the UCLA Jules Stein Eye Institute
  • Two-year fellowship in medical retina and Vitreoretinal surgery at Associated Retinal Consultants at William Beaumont Hospital in Royal Oak, Michigan.

Gregory Peare, M.D.

Gregory Peare Bio

Dr. Gregory Peare’s personal philosophy of care is to take extra time to make sure patients have a really good understanding of their care.


  • Hip/Knee/Shoulder Replacement
  • Elbow/Ankle/Knee/Shoulder Arthroscopy
  • Sports Medicine

Board Certifications

  • American Board of Orthopedic Surgery, 2007

Education & Training

Medical School
  • University of Arizona College of Medicine
    Graduated in 1989
Internship & Residency Programs
  • University of Texas Medical Branch Hospitals – Orthopedic Surgery

Robert A Miller, M.D.

Robert Miller Bio

Dr. Miller is Board Certified by the Academy of Otolaryngology and is a former assistant professor at Robert Wood Johnson University Hospital. He also served as a director of ENT Cigna Health Plan of Arizona. Dr. Miller has extensive experience with pediatric and adult medical and surgical otolaryngology. Prior to his relocating to Yuma, he was an active member of the medical staff at Banner Good Samaritan and Phoenix Children's Hospital.


Pediatric and adult medical and surgical otolaryngology

Board Certifications

  • American Board of Otolaryngology, 1986

Education & Training

Medical School
  • Temple University School Of Medicine, Philadelphia, PA
    Graduated in 1981
Residency Programs
  • Albert Einstein Medical Center, Northern Division, Philadelphia, PA
    General Surgery 1981-1983
  • Thomas Jefferson University Hospital, Philadelphia, PA
    Otolaryngology 1983-1986

Shawn Hermenau, M.D.

Shawn Hermenau Bio

Care Philosophy

Dr. Shawn Hermenau specializes in the comprehensive treatment of numerous conditions affecting the cervical, thoracic, and lumbosacral spine including degenerative disc disease, scoliosis, trauma, infections, and tumors.

Special Interests

Orthopedic Surgery

Board Certifications

Orthopedic Surgery, 2008

Education & Training

Medical School
  • George Washington University School of Medicine
    Graduated in 2000
Fellowship Hospital
  • Yale-New Haven Hospital
    Complete in 2010
Undergraduate Schools
  • University Of Utah
    Graduated in 1996
  • Disc Replacement
  • Dural Repair or Other Spinal Spinal Cord Repair
  • Elbow Fracture & Dislocation Treatment
  • Epidural Block, Facet Blocks
  • Foot & Ankle Fracture & Dislocation Treatment
  • Herniated Disc Surgery
  • Hip Fracture & Dislocation Treatment
  • Joint Drainage
  • Lamina Procedures (incl. Laminectomy, Laminoplasty, Laminotomy)
  • Resection or Ablation of Bone Tumor, Partial or Complete Resection of Bone
  • Debridement of Bone
  • Shoulder Fracture & Dislocation Treatment
  • Spinal Compression Fracture Repair
  • Spinal Fusion
  • Spinal Nerve Block
  • Spinal Reconstructive Surgery for Deformities
  • Spine Surgery
  • Steroid Injections

Todd Runyan, M.D.

Todd Runyan Bio

Dr. Runyan is a board certified orthopedic surgeon in Yuma, Arizona. He is currently licensed to practice medicine in Arizona.

Clinical Specialties & Interests

Orthopedic Surgery: General Orthopedic Surgery, Hand Surgery

Board Certification

  • American Board of Orthopedic Surgery

Education & Training

Medical School
  • University of Texas Medical Branch Hospitals
  • Keck School of Medicine of USC

John W. Bass, M.D.

Dr. Bass is certified by both The American Board of Plastic Surgery and American Board of Surgery. He has been in private practice since 1989 and has been active in the Maricopa County Medical Society throughout that time, serving as its president in 2001. Past affiliations include Paradise Valley Hospital, John C. Lincoln Hospital and Medical Center, Scottsdale Healthcare Hospitals, and Good Samaritan Regional Medical Center. He has a broad range of experience in plastic surgery procedures, delivering beautiful and natural-looking results to patients for decades.

Learn more about Dr. Bass.


A full range of plastic surgery procedures, with additional involvement in surgical teaching for breast cancer reconstruction surgery.

Board Certifications

  • American Board of Plastic Surgery
  • American Board of Surgery

Education & Training

Medical School

  • University of Missouri at Kansas City, Kansas City, MO

Residency Programs

  • Phoenix Integrated Surgery Residency Program, Phoenix, AZ
    General Surgery
  • St. Louis University Medical Center, St. Louis, MO
    Plastic Surgery