New patients · Start here
$120
Initial Medical Consultation
Comprehensive new patient visit with Dr. Moasis and his team.
Oasis Medical Group
Your Health.
Our Mission.
Physician-Led Primary Care & Behavioral Health Medicine in Vista, North County San Diego, led by Dr. Kareem Moasis, MD
Same-Day Appointments Available
Vista, CA
Mon–Fri 8:30am–5pm
Accepting All Insurances
Except Medi-CalCash-pay options also available
Aetna Anthem Blue Cross Blue Shield Cigna United Healthcare Tricare Medicare PPO Plans
What we offer
Comprehensive care, one trusted clinic
Cash-pay primary care
Quality care without the insurance hassle
No insurance? No problem. Transparent flat-rate visits — no surprise bills and no paperwork maze.
- Flat-rate pricing — know your cost upfront
- Walk-ins and same-day visits welcome
- In-office labs available
- CareCredit financing for eligible patients
Flexible payments through CareCredit for eligible visits.Apply for CareCredit
Packages are for patients without insurance or those who prefer to pay directly. Call 760-691-1901 to confirm what is included before your visit.
Meet your physician
Dr. Kareem Moasis, MD
Dr. Kareem Moasis is an Internal Medicine/Primary Care Physician with advanced specialty training in Internal Medicine, Addiction Medicine, Pain Medicine, Longevity Medicine, and Behavioral Health. He is the founder and Medical Director at Oasis Medical Group — and the reason patients drive from across Encinitas, Fallbrook, and North County San Diego to receive his medical care.
Dr. Moasis completed his medical training and residency with a focus on comprehensive, relationship-based internal medicine at Brooklyn Hospital Center in Brooklyn, New York. He was drawn to internal medicine because of its breadth — the ability to care for the whole patient across every system of the body — and to addiction medicine because of the profound impact that effective treatment can have on a patient's entire life trajectory.
What sets Dr. Moasis apart is not just his clinical knowledge — it is his approach. He practices medicine the way it was meant to be practiced. He sits down. He listens. He asks the questions that other doctors skip. He explains things in plain language. And when you leave his office, you leave with a plan you understand and a physician you can trust.
Dr. Moasis and his team have particular expertise in:
- Internal Medicine & Chronic Disease ManagementDiabetes, hypertension, thyroid disorders, cardiovascular risk, and complex multi-system conditionsLearn more →
- Addiction Medicine & MATPhysician-led Suboxone treatment, opioid use disorder, medication-assisted recovery with integrated behavioral supportLearn more →
- Wellness & Longevity MedicineTestosterone replacement therapy, hormone optimization, peptide therapy, PRP, and evidence-based anti-aging medicineLearn more →
- PsychiatryBehavioral & Mental HealthDepression, anxiety, mood disorders, ADHD, and co-occurring mental health conditions in the context of primary careLearn more →
- Pain ManagementDecadron injections, PRP for chronic pain, ketamine therapy, and comprehensive non-opioid pain strategiesLearn more →
- Advanced TherapiesTMS (Transcranial Magnetic Stimulation), Ketamine therapy, and regenerative medicineLearn more →
Telehealth
Physician-led care from wherever you are
Book a telehealth consultation when an in-person visit is not required — follow-ups, medication check-ins, and select consultations with the same Oasis Medical Group providers.
- Physician-led video or phone consultations
- Primary care, psychiatry, psychotherapy, and more
- Select your service and schedule online in minutes
- Same providers you would see in our Vista office
Telehealth consultation
$50
10–20 minutes physician-led call. Cash-pay fee shown at checkout when you book online.
$50 · 10–20 minutes
Select your consultation type, confirm insurance, then schedule your call online.
Learn about telehealthMemberships
Monthly Memberships & Care Plans
Predictable monthly pricing for wellness, recovery, and longevity — physician-supervised with transparent costs and no surprise bills.
Starter Plan
$399/month
2 visits per month plus monitoring
Core Plan
$499/month
Weekly visits in month one, monthly thereafter
Premium Plan
$599/month
Weekly therapy integration, priority scheduling, and medication management
Pain Management TPI Injection Membership
$79.99/injection
Physician-supervised trigger point injection (TPI) program — one in-office injection per week for 6 weeks at $79.99 per injection.
Wellness Energy Membership
$99.99/month
Regular value: $149.99/month
Recovery & Longevity Membership
$149.99/month
Regular value: $199.99/month
Supports healthy recovery, tissue repair, active lifestyles, and longevity.
View all memberships
Primary care cash-pay packages are also available for patients without insurance. Most medically necessary services accept major insurance plans.
FAQ
Frequently asked questions
Answers to what patients ask us most.
Dr. Kareem Moasis, MD is the founder of Oasis Medical Group in Vista, CA. He and his team provide primary care, internal medicine, and family medicine. Patients often search for us as Oasis Medical, Oasis MD, or Oasis Medical Center — we are the same Vista clinic. Read our Google reviews on this site and on Google.
Yes — we offer same-day appointments for primary care, sick visits, and addiction medicine intakes whenever our schedule allows. Walk-ins are also welcome. Call 760-691-1901 to confirm availability.
We accept all major insurance plans — including Aetna, Anthem Blue Cross, Blue Shield, Cigna, United Healthcare, Tricare, Medicare and most PPO plans. The only exception is Medi-Cal, which we do not accept. Affordable cash-pay options are also available.
Absolutely. All addiction medicine care at Oasis Medical Group is private, discreet, and judgment-free. Your medical information is protected under HIPAA, and we treat every patient with dignity.
Most patients can be evaluated and started on Suboxone the same day they call. Dr. Moasis and his team include board-certified addiction medicine physicians and can prescribe immediately when appropriate.
No referral is needed. Call 760-691-1901 or book online at our scheduling page — choose a time that works for you.
We're located at 906 Sycamore Ave, Suite 201, Vista, CA 92081 — conveniently serving Vista, Oceanside, Carlsbad, San Marcos, Encinitas, Fallbrook, and all of North County San Diego.
Internal & primary care, preventive care, MAT/Suboxone, mental & behavioral health, TMS and ketamine therapy, TRT/HRT, peptide therapy, PRP, red light therapy, and pain management — all under one roof.
Still have questions?
Call 760-691-1901