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
- Acute Medical Care
- Advanced Access Scheduling
- Care For All Ages (prenatal and newborns to elder care)
- Nutrition / Dietetic Services
- Radiologic Technology / X-Rays
- 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
- Family Planning Services
- Labor and Delivery Services (at Gila Regional Medical Center)
- Pregnancy Testing
- Reproductive Counseling
- Well-Woman Exams
- 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

888-271-3596
If you believe you have a life-threatening emergency, please dial 911

Call4Health 24/7 Nurse Advice Line
Call (855) 742-3400
After Hours-Non-HMS Resource
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
Mason Heywood, MD

Family Medicine Resident
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
Hannah Lochner, RD

Dietician/Diabetes Educator
Registered Dietician
Joseph Santarsieri, DC

Chiropractor
Doctor of Chiropractic
Patient Feedback
“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!”