DR. DIANA OGANESYAN MD
NPI 1538797642
Emergency Medicine in Las Vegas, NV
About Dr. Diana Oganesyan Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. DIANA OGANESYAN MD (NPI 1538797642) is an individual emergency medicine provider in Las Vegas, Nevada, licensed in Nevada (24088) and active in the NPI registry since April 2020. She is enrolled in Medicare PECOS, is affiliated with Valley Hospital Medical Center, and is a graduate of Other (2019).
NPPES Registry Identity
Specialties & Licenses
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. Diana Oganesyan Md 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
5Medicare enrollment records show Diana Oganesyan reassigns Medicare billing to 5 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Las Vegas, NV 89109
- Reassigned Medicare billing, Nevada enrollment
- 304 clinicians in this Medicare group
Las Vegas, NV 89106
- Reassigned Medicare billing, Nevada enrollment
- 161 clinicians in this Medicare group
Henderson, NV 89052
- Reassigned Medicare billing, Nevada enrollment
- 43 clinicians in this Medicare group
Elko, NV 89801
- Reassigned Medicare billing, Nevada enrollment
- 59 clinicians in this Medicare group
Pleasanton, CA 94588
- Reassigned Medicare billing, Nevada enrollment
- Medicare enrollment name: Team Physicians Of Nevada-Scherr, PC
- 55 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.
Hospital Affiliations CMS Care Compare 5
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Valley Hospital Medical Center
Acute Care Hospitals · Las Vegas, NVMountainview Hospital
Acute Care Hospitals · Las Vegas, NVSummerlin Hospital Medical Center
Acute Care Hospitals · Las Vegas, NVSouthern Hills Hospital And Medical Center
Acute Care Hospitals · Las Vegas, NVCentennial Hills Hospital Medical Center
Acute Care Hospitals · Las Vegas, NVPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 89109 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Other Providers at the Same Location NPPES 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
LAS VEGAS, NV 89109
LAS VEGAS, NV 89109
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 Diana Oganesyan's NPI number?
The NPI number for Diana Oganesyan is 1538797642. It was assigned to this individual provider in the NPPES registry on April 1, 2020.
Where is Diana Oganesyan located?
Diana Oganesyan practices at 3186 S Maryland Pkwy, Las Vegas, NV 89109. The listed phone number is (702) 961-5000.
What is Diana Oganesyan's specialty?
The primary specialty registered for this NPI is Emergency Medicine with taxonomy code 207P00000X.
Is Diana Oganesyan enrolled in Medicare?
Yes. Diana Oganesyan 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 Diana Oganesyan's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Diana Oganesyan reassigns Medicare benefits to 5 organizations: Fremont Emergency Services Scherr Ltd (Las Vegas, NV), Shadow Emergency Physicians PLLC (Las Vegas, NV), Edwards MD PC (Henderson, NV), Crum,stefanko And Jones Ltd (Elko, NV) and Team Physicians Of Nevada-Scherr, P.C. (Pleasanton, CA). 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 Diana Oganesyan's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
Is Diana Oganesyan affiliated with any hospitals?
According to CMS data, Diana Oganesyan is affiliated with Valley Hospital Medical Center, Mountainview Hospital, Summerlin Hospital Medical Center, Southern Hills Hospital And Medical Center and Centennial Hills Hospital Medical Center.
When was this NPI record last updated?
The NPPES record for Diana Oganesyan was last updated on July 27, 2023. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 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.
# Dr. Diana Oganesyan, MD · NPI 1538797642
Emergency Medicine physician in Las Vegas, Nevada. Individual provider, active in the CMS NPPES registry since April 1, 2020.
## Identity
- **NPI:** 1538797642 (Entity type: Individual)
- **Enumerated:** April 1, 2020
- **Primary specialty:** Emergency Medicine · taxonomy 207P00000X
- **State license:** 24088 (Nevada)
- **Sole proprietor:** No
## Practice location
- **Address:** 3186 S MARYLAND PKWY, Las Vegas, NV 89109-2317
- **Phone:** (702) 961-5000
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** 5 organizations under Medicare reassignment (form CMS-855R): Fremont Emergency Services Scherr Ltd (NPI 1518120971, Las Vegas, NV); Shadow Emergency Physicians PLLC (NPI 1184795874, Las Vegas, NV); Edwards MD PC (NPI 1902642994, Henderson, NV); Crum,stefanko And Jones Ltd (NPI 1285645515, Elko, NV); Team Physicians Of Nevada-Scherr, P.C. (NPI 1073942116, Pleasanton, CA) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2019
## Record status
- **NPPES last updated:** July 27, 2023
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Source: [NPI Profile](https://npiprofile.com/npi/1538797642) · Data from the CMS NPPES public registry.