Majonel Ontanillas, MD
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- NPI Number
- 1235105313
- Provider Type
- Individual Practitioner
- Credential
- MD
- Primary Specialty
- Allopathic & Osteopathic Physicians - Internal Medicine Physician
- License Number
- 12413
- Practice Address
- 2704 N Tenaya WAY
- City, State ZIP
- Las Vegas, NV 89128
- Phone
- (702) 243-8500
- Last Updated
- June 8, 2026
- Source
- Publicly available data
Majonel Ontanillas, MD is a internal medicine physician provider located in Las Vegas, NV. They offer internal medicine physician services to patients in the Las Vegas area.
As a internal medicine physician provider in Las Vegas, this clinician evaluates and treats patients for a range of common conditions seen in Las Vegas and throughout NV.
The practice is located at 2704 N Tenaya WAY, Las Vegas, NV 89128. Patients can call 7022438500 to schedule an appointment or use the directions link above to find the office from anywhere in the area.
Patients typically visit this provider for patients see internists for annual physicals, management of chronic conditions such as diabetes, hypertension, and heart disease, second opinions, and coordination of care between specialists.
If you plan to see this provider, it is a good idea to confirm that the practice accepts your insurance and is in-network before scheduling. Coverage details vary by plan, and our quote tool can help you compare options in NV.
This profile was last verified on June 8, 2026. Provider information is sourced from publicly available data and may not reflect recent changes. Please confirm details directly with the practice before scheduling.
Call for hours and appointments. Hours may vary by provider and location.
A patient’s guide to internal medicine physician care in Las Vegas, NV.
What a Internal Medicine Physician provider does
Internal medicine providers, also called internists, specialize in the prevention, diagnosis, and treatment of diseases in adults. They are trained to handle both common and complex illnesses and often manage patients with multiple chronic conditions.
Common conditions treated
Internists commonly treat hypertension, type 2 diabetes, coronary artery disease, chronic obstructive pulmonary disease (COPD), thyroid disorders, kidney disease, and arthritis. They also coordinate cancer screenings and geriatric assessments.
Common reasons to schedule a visit
Patients see internists for annual physicals, management of chronic conditions such as diabetes, hypertension, and heart disease, second opinions, and coordination of care between specialists.
What to expect during a visit
Expect a thorough review of your medical history, current medications, and lifestyle. Your internist may order blood work, imaging, or other diagnostic tests to support an accurate diagnosis and treatment plan.
Insurance coverage considerations
Medicare and most commercial insurance plans cover adult preventive visits and chronic care management. Verify network status before scheduling by using our quote tool.
How to choose the right internal medicine physician provider in Las Vegas
Choose an internist with experience managing your specific conditions, convenient hospital affiliations, and a willingness to coordinate with any specialists you may need. Board certification in internal medicine signals additional training and commitment to ongoing education.
Looking for in-network coverage that includes this internal medicine physician provider? Compare health plans in NV →
Insurance acceptance not listed
The public NPI registry does not include insurance acceptance data. Contact the office directly to ask if they accept your insurance plan. You can also use our quote tool to find health plans in NV.
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Common questions about Majonel Ontanillas, MD in Las Vegas, NV.
How do I make an appointment with Majonel Ontanillas, MD?
Call Majonel Ontanillas, MD directly at their Las Vegas office to schedule a visit. You can also use the contact form on this page to send a message and the practice will respond.
Does Majonel Ontanillas, MD accept insurance?
Provider insurance information is not included in the public NPI registry data that powers this directory. Contact the office directly to ask whether they accept your specific insurance plan. You can also use our quote tool to find health plans in NV.
What are the office hours for Majonel Ontanillas, MD in Las Vegas?
Office hours for Majonel Ontanillas, MD in Las Vegas are not currently published. Call the practice directly to confirm hours before your visit.
Is parking available at Majonel Ontanillas, MD's Las Vegas location?
Most provider offices in Las Vegas offer on-site or nearby street parking. Call Majonel Ontanillas, MD in Las Vegas ahead of time to confirm parking options and accessibility accommodations.
Does Majonel Ontanillas, MD offer telehealth?
Many internal medicine physician providers in NV now offer telehealth visits for follow-ups, medication management, and routine consultations. Call Majonel Ontanillas, MD to ask whether a telehealth visit is appropriate for your needs.
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Claim ProfileData is sourced from publicly available records. Public records do not confirm active license status, quality of care, insurance acceptance, or network participation. Please verify details directly with the provider before scheduling. Last updated June 8, 2026.