HMS Medical Services

“Primary care providers work within a Patient Centered Medical Home (PCMH) model that works to improve health outcomes through care coordination and optimizing health outcomes”

Led by Darrick Nelson, MD, Chief Medical Officer (CMO), HMS medical doctors, nurse practitioners and physician assistants work in a team-based approach to deliver comprehensive and integrated services with the support of highly qualified nurses and medical assistants. HMS medical services are provided to all age groups, which also includes prenatal care and obstetrics, and many of our providers offer services at Gila Regional Medical Center.

Available Medical Services

Available Family Medical Services
  • Acute Medical Care
  • Advanced Access Scheduling
  • Care For All Ages (prenatal and newborns to elder care)
  • Nutrition / Dietetic Services
  • Radiologic Technology / X-Rays
Available Primary Care Services
  • Bone Density Scanning Services (DXA)
  • Chronic Medical Diagnosis and Treatment (asthma, diabetes, heart disease, etc.)
    • Management of chronic medical conditions in the elderly population
  • Commercial Driver’s License (CDL) Exams
  • Immunization Services
  • In-House X-Rays
  • Minor Surgical Procedures (circumcisions, toenail removals, mole removals, etc.)
  • Newborn Hearing Screenings
  • Preventative Care / Annual Check-Ups
    • Preventative medicine assessments for vaccines, advanced directives, dexa scans, colorectal cancer screening, mammogram, vision exams, hearing exams, cognitive assessments, gait and stability evaluations
  • Specialist Referrals
    • Coordinating care for any additional needs, home health/physical therapy or specialist referrals
  • Sports-Related Physicals
Available OB/GYN Care Services
  • Family Planning Services
  • Labor and Delivery Services (at Gila Regional Medical Center)
  • Pregnancy Testing
  • Reproductive Counseling
  • Well-Woman Exams
Available Specialty Services
  • Chiropractic Services
  • Home assessments
    • Home safety evaluations and education with handouts for homebound patients
  • Medication Assisted Treatment (MAT)
  • Senior Center Education
    • Topics including but not limited to geriatric safety, colorectal cancer screening, postural hypotension, advanced directives, osteoporosis, dementia, home safety checklist
Medical Provider Profiles

Darrick Nelson, MD

Family Medicine
Chief Medical Officer
Family Medicine Residency Program Director
Doctor of Medicine

Pedro Armendariz, MD

Family Medicine
Doctor of Medicine

Marlene Baska, PA-C

Family Medicine
Physician Assistant-Certified

Brian Etheridge, MD, FAAP

Pediatric Residency
Doctor of Medicine
Fellow of the American Academy of Pediatrics

Brandon Ferguson, MD

Family Medicine Residency
Doctor of Medicine

Dara Foster, MSN, APRN, FNP-C

Family Medicine
Master of Science in Nursing
Advanced Practice Registered Nurse
Certified Family Nurse Practitioner

Tanvir Hafiz, PA-C

Family Medicine
Physician Assistant-Certified

Forrest Eugene Henry, DO

Osteopathic Medicine
Doctor of Osteopathic Medicine

Virginia Hernandez, MD

Family Medicine
Doctor of Medicine

Mason Heywood, MD

Family Medicine Resident
Doctor of Medicine

Donald Johnson, MD, FAAP

Pediatrician
Doctor of Medicine
Fellow of the American Academy of Pediatrics

Annie Lee, MD, JD

Family Medicine
Doctor of Medicine
Juris Doctor

Sam W. Lew, MD

Pediatrics
Doctor of Medicine

Jennica Lines, MSN, APRN, FNP-C

Family Nurse Practitioner
Master of Science in Nursing
Advanced Practice Registered Nurse
Certified Family Nurse Practitioner

Philip Manzano, MD

Family Medicine Resident
Doctor of Medicine

Tiffany Maxey, PA-C

Family Medicine
Physician Assistant-Certified

Randi Murphy, DNP, FNP-C

Family Nurse Practitioner
Doctor of Nursing Practice
Certified Family Nurse Practitioner

Megan Novikoff, PA-C

Family Medicine
Physician Assistant-Certified

Erica Palin, MD

Family Medicine Family Medicine Resident
Doctor of Medicine

Clifton Rogers, PA-C

Family Medicine
Physician Assistant-Certified

James T. Shen, MD

Family Medicine Resident
Doctor of Medicine

Isaac Saucedo, PA

Family Practice Clinician
Physician Assistant

Sanne van Swol, PA-C

Physician Assistant
Physician Assistant-Certified

Janie Vargas, PA-C

Family Medicine
Physician Assistant-Certified

Hannah Lochner, RD

Dietician/Diabetes Educator
Registered Dietician

Joseph Santarsieri, DC

Chiropractor
Doctor of Chiropractic

Patient Feedback

“Dr Hernandez is the best! Always helps me!”

“Dr.Lee who was professional, courteous and really listened to my symptoms and pains.”

“Dr. Amendariez was great! He addressed all my concerns.”

“My son would be afraid to go but because Dr Etheridge hands out books my son is excited to go to the Dr. These gifts really help the visit be less stressful. I love that it’s not candy or a toy, it's a book that can teach him!”