DR. WILLIAM ROBERT MARANON M.D.
NPI 1669583233
Specialist in Las Vegas, NV
About Dr. William Robert Maranon M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. WILLIAM ROBERT MARANON M.D. (NPI 1669583233) is an individual specialist in Las Vegas, Nevada, licensed in Nevada (7873) and active in the NPI registry since August 2006. He is enrolled in Medicare PECOS and is a graduate of University Of California, San Diego School Of Medicine (1984).
NPPES Registry Identity
Specialties & Licenses
Other Identifiers 1
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare and accepts Medicare assignment
Dr. William Robert Maranon M.d. is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.
Medicare Billing Reassignments
2Medicare enrollment records show William Maranon reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Las Vegas, NV 89119
- Reassigned Medicare billing, Nevada enrollment
Las Vegas, NV 89119
- Reassigned Medicare billing, Nevada enrollment
- 2 clinicians in this Medicare group
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Areas of Expertise CMS Part B claims 4
Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.
Frequently Asked Questions NPPES & CMS
Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.
What is William Maranon's NPI number?
The NPI number for William Maranon is 1669583233. It was assigned to this individual provider in the NPPES registry on August 31, 2006.
Where is William Maranon located?
William Maranon practices at 1040 S. Rainbow Blvd Ste 101, Las Vegas, NV 89145. The listed phone number is (702) 889-9129.
What is William Maranon's specialty?
The primary specialty registered for this NPI is Specialist with taxonomy code 174400000X.
Is William Maranon enrolled in Medicare?
Yes. William Maranon is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.
Which organizations bill Medicare for William Maranon's services?
According to the CMS Revalidation Reassignment List (October 2026 release), William Maranon reassigns Medicare benefits to 2 organizations: All American Surgical LLC (Las Vegas, NV) and Biocell LLC (Las Vegas, NV). Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for William Maranon's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
When was this NPI record last updated?
The NPPES record for William Maranon was last updated on September 11, 2014. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 12 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.