Dr. Maressa M. Alejandro, MD
Board-Certified Internal Medicine Physician

Specialty: Internal Medicine & Geriatrics
Education: Ponce School of Medicine, Ponce, Puerto Rico
Board Certification: American Board of Internal Medicine
Fellowship: Geriatrics & Primary Care — Saint Vincent’s Hospital, NYC
Experience: 20+ years
Languages: English, Spanish
Insurance: Medicare, Medicaid, Aetna, Blue Cross, United Healthcare, Cigna, and others
Accepting New Patients: Yes
Book an Appointment with Dr. Alejandro
About Dr. Alejandro
Dr. Maressa Alejandro is an internal medicine physician specializing in preventative and medical care for adults and seniors. With more than 20 years of practice experience, she brings deep expertise in managing complex medical conditions with kindness, respect, and compassion.
She completed her internal medicine internship, residency, and fellowship, as well as additional fellowship training in geriatrics and primary care at Saint Vincent’s Hospital in New York City. Dr. Alejandro is board-certified by the American Board of Internal Medicine, licensed in multiple states including Arizona, and is a member of the American Medical Association.
Conditions & Specialties
Dr. Alejandro has expertise in treating a wide range of conditions, including:
- Coronary artery disease and heart health
- Hypertension (high blood pressure)
- Diabetes management
- Underactive and overactive thyroid disease
- Asthma and bronchitis
- Autoimmune diseases
- Geriatric care — chronic diseases, nutritional problems, cognitive loss, memory impairment, medication management, balance issues, and immobility
- Annual wellness visits and preventive care
- Medicare Annual Wellness Visits (AWV)
Whether it’s a complex medical issue with multiple comorbidities or a simple well-check exam, Dr. Alejandro provides thorough, personalized care for each patient.
Insurance Accepted
Dr. Alejandro participates with Medicare, Medicaid, Aetna, Blue Cross, United Healthcare, Cigna, and other major insurance plans. Contact our office at 480-482-7077 to verify your specific coverage.
Frequently Asked Questions
Does Dr. Alejandro accept Medicare?
Yes. Dr. Alejandro accepts Medicare, Medicaid, Aetna, Blue Cross, United Healthcare, Cigna, and other major insurance plans at Fusion Medical Care in Scottsdale.
Does Dr. Alejandro speak Spanish?
Yes. Dr. Alejandro is fluent in Spanish and provides care to Spanish-speaking patients.
What is Dr. Alejandro’s specialty?
Dr. Alejandro is a board-certified internal medicine physician with additional fellowship training in geriatrics. She specializes in adult and senior care, managing conditions like diabetes, hypertension, thyroid disease, autoimmune disorders, and age-related health concerns.
Is Dr. Alejandro accepting new patients?
Yes. Dr. Alejandro is currently accepting new patients at Fusion Medical Care in Scottsdale, AZ. Call 480-482-7077 or book online.
Can I see Dr. Alejandro for a Medicare Annual Wellness Visit?
Yes. Dr. Alejandro provides Medicare Annual Wellness Visits (AWV) including a comprehensive review of your medical history, medication review, health risk assessment, and personalized preventive care plan.
Ready to schedule?
Call 480-482-7077 or book online
Fusion Medical Care
5900 N Granite Reef Rd., Ste. 102, Scottsdale, AZ 85250




