Initial Medical Consultation
$120
Comprehensive new patient visit with Dr. Moasis and his team.
Internal Medicine
Internal Medicine
Chronic disease management, annual exams, bloodwork, and preventive care from an Internal Medicine - Primary Care Physician.
What Is Internal Medicine?
Internal medicine is the branch of medicine focused on the prevention, diagnosis, and treatment of adult diseases. Unlike urgent care or emergency medicine, internal medicine is about building a long-term relationship with a physician who truly knows your health history, your risk factors, and your goals.
At Oasis Medical Group in Vista, California, Dr. Kareem Moasis, MD, and his team brings board-certified internal medicine expertise to every appointment. Whether you are managing a chronic condition, due for an annual physical, or simply want a physician who will actually listen — this is the kind of care you have been looking for.
Internal medicine physicians are sometimes called “the doctor's doctor” because of the depth and breadth of their training. Dr. Moasis and his team uses that expertise to connect the dots between your symptoms, your labs, and your lifestyle — giving you a complete picture of your health, not just a quick fix.
Cash-pay packages
Primary Care Cash-Pay Packages
Patients without insurance or those who prefer to pay directly can use our affordable cash-pay visit packages for internal medicine and primary care.
Two-Week Follow-Up
$99.99
Review bloodwork results and adjust your care plan.
Subsequent Follow-Up Visits
$99.99
Ongoing primary care at an affordable flat rate.
Conditions We Treat
At Oasis Medical Group we manage a wide range of adult health conditions including:
- Diabetes — Blood sugar monitoring, medication management, lifestyle counseling
- Hypertension (High Blood Pressure) — Diagnosis, treatment, and long-term control
- High Cholesterol — Lipid panels, dietary guidance, statin management
- Thyroid Disorders — Hypothyroidism, hyperthyroidism, TSH monitoring
- Asthma & COPD — Breathing evaluations, inhaler management, pulmonary care
- Arthritis & Joint Pain — Diagnosis and ongoing pain management
- Obesity & Weight Management — Physician-guided plans, GLP-1 options
- Anemia & Blood Disorders — CBC evaluation and treatment
- Kidney & Liver Monitoring — Routine labs and function tracking
- Preventive Screenings — Cancer screenings, vaccinations, wellness checks
If you are living with a chronic condition and feel like your current care is just not cutting it — we want to help.
Signs You Should See an Internist
Many patients come to us after years of bouncing between specialists with no clear answers. You may benefit from internal medicine care if:
- ✓You have a chronic condition that feels out of control
- ✓You take multiple medications and no one is coordinating your care
- ✓You have not had a physical exam or bloodwork in over a year
- ✓You are experiencing fatigue, unexplained weight changes, or brain fog
- ✓You want a physician who will spend real time with you — not rush you out in seven minutes
- ✓You need bloodwork, lab results explained, or a second opinion
- ✓You are a new patient looking for a long-term primary physician in Vista or Encinitas, Fallbrook, and North County San Diego
How Internal Medicine Works at Oasis
At Oasis we keep it simple and patient-centered. Here is what your care looks like:
Step 1 — Initial Evaluation
Dr. Moasis and his team review your full medical history, current medications, and any recent labs. He listens. He asks questions most doctors skip. This appointment sets the foundation for everything that follows.
Step 2 — Bloodwork & Diagnostics
We offer in-office lab work so you get results fast. No extra trips to a separate lab. Dr. Moasis and his team review your results personally and explains what they mean in plain language.
Step 3 — Personalized Treatment Plan
Every patient gets a plan built around their specific needs — not a one-size-fits-all protocol. Whether that means medication adjustments, lifestyle changes, referrals, or specialist coordination, Dr. Moasis and his team handle it all.
Step 4 — Ongoing Follow-Up
Chronic disease management is not a one-time visit. We schedule regular follow-ups to track your progress, adjust your plan, and make sure you are moving in the right direction.
Why Choose Oasis Medical Group for Internal Medicine in North County San Diego
There is no shortage of clinics in Encinitas, Fallbrook, and North County San Diego. Here is why patients choose Oasis:
Physician-Led Every Visit
Your care is always led by Dr. Moasis and his trusted medical team — delivering the same high standard every single visit.
Same-Day Appointments Available
We know life does not wait. Call in the morning, get seen that day when our schedule allows.
Walk-Ins Welcome
No appointment? No problem. We accept walk-ins during office hours.
In-Office Lab Work
Bloodwork done on-site. Results reviewed and explained by Dr. Moasis and his team personally.
Accepting Most Insurance + Cash-Pay Options
We accept Aetna, Anthem Blue Cross, Blue Shield, Cigna, United Healthcare, Tricare, Medicare, and most PPO plans. Affordable cash-pay packages are also available for patients without insurance.
Private, Unhurried Care
We are a private physician-owned practice. That means no corporate quotas, no rushed appointments, and a doctor who actually knows your name.
What to Expect at Your First Internal Medicine Visit
Your first visit with Dr. Moasis and his team typically runs 45–60 minutes. Come prepared with:
- A list of your current medications and dosages
- Any recent lab results or medical records if you have them
- Your insurance card and photo ID
- A list of questions or concerns — no matter how small
Dr. Moasis and his team will walk through your health history, perform a physical exam, and order any necessary labs or screenings. By the end of the appointment you will have a clear picture of where your health stands and a concrete plan moving forward.
There is no pressure, no rushing, and no judgment. Just real medicine from a physician who cares.
FAQ
Frequently Asked Questions
Internal medicine focuses exclusively on adult patients and involves deeper training in complex, multi-system diseases. Primary care is broader and includes all ages. At Oasis, Dr. Moasis and his team provide both — giving adults the benefit of internist-level expertise with the continuity of a primary care relationship.
No referral needed. You can call 760-691-1901 or use our online contact form to schedule directly.
We accept most major insurance plans including Aetna, Anthem Blue Cross, Blue Shield, Cigna, United Healthcare, Tricare, Medicare, and most PPO plans. We do not accept Medi-Cal. Cash-pay options are available.
For most healthy adults, once a year for an annual physical and wellness exam. If you are managing a chronic condition, more frequent visits — every 3–6 months — are typically recommended.
Absolutely. One of the most valuable things an internist does is coordinate care across specialists to make sure your treatment plan is cohesive and nothing falls through the cracks.
Ready to Get the Care You Deserve?
Same-day appointments available. Walk-ins welcome. Dr. Moasis and his team are accepting new patients now.
- 906 Sycamore Ave, Suite 201, Vista, CA 92081
- Monday–Friday 8:30 AM–5:00 PM