Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
NPIDirectory

Mark Anthony Lopez, DO

Individual provider Internal Medicine Physician · NPI 1619147220

Mark Anthony Lopez, DO practises Internal Medicine in Las Vegas, Nevada. Qualified in 2004, 22 years ago. Practices with Clinicians Medical Group LLC, a 5-clinician group and accepts Medicare assignment. Licensed in Nevada.

Years since qualifying
22
Licensed in
NV
In the registry since
2008
What do these letters mean?
DO — Doctor of Osteopathic Medicine
A fully licensed physician, trained like an MD with additional musculoskeletal training. Equivalent practice rights in all 50 states.

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Practice location Address checks out

4700 Las Vegas Blvd N
Las Vegas, NV 89191-6600
Phone: (702) 653-3251
Fax: (702) 653-3253
Show map & directions

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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Internal Medicine Physician (primary) Taxonomy 207R00000X · Licence SL0514 (NV)

Record details

NPI number1619147220
Entity typeIndividual (Type 1)
GenderMale
Credentials DO
Sole proprietorYes
NPI enumeratedMarch 11, 2008
Last updated in NPPESOctober 28, 2020
Certification dateOctober 28, 2020

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyINTERNAL MEDICINE
Medical schoolOTHER
Graduated 2004 (22 years in practice)
Group practice Clinicians Medical Group Llc — 5 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations2 on file with Medicare

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients229
Services billed 462 a service is one billed item, such as a visit, a test or a procedure
Average patient age67

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician. Those with a page here are linked.

Colleagues at Clinicians Medical Group LLC

Clinicians the CMS Doctors & Clinicians file lists under the same group practice.

Other providers in Las Vegas