DR. NEZAR ALI EL-RUWIE M.D.
NPI 1649408659
Psychiatry & Neurology - Psychiatry in Saint Louis, MO
About Dr. Nezar Ali El-ruwie M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. NEZAR ALI EL-RUWIE M.D. (NPI 1649408659) is an individual psychiatry provider in Saint Louis, Missouri, licensed in Missouri (2013002774) and active in the NPI registry since June 2009. He is enrolled in Medicare PECOS, is affiliated with Mercy Hospital South, and maintains a secondary practice location in Farmington.
NPPES Registry Identity
Specialties & Licenses 2
Secondary Practice Location 1
Accepted Insurance
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. Nezar Ali El-ruwie 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
5Medicare enrollment records show Nezar El-ruwie reassigns Medicare billing to 5 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Saint Louis, MO 63128
- Reassigned Medicare billing, Missouri enrollment
- Medicare enrollment name: St Anthonys Physician Organization Hospitalist Services Lc
- 340 clinicians in this Medicare group
Saint Louis, MO 63141
- Reassigned Medicare billing, Missouri enrollment
- 326 clinicians in this Medicare group
Festus, MO 63028
- Reassigned Medicare billing, Missouri enrollment
- 299 clinicians in this Medicare group
Washington, MO 63090
- Reassigned Medicare billing, Missouri enrollment
- 261 clinicians in this Medicare group
Farmington, MO 63640
- Reassigned Medicare billing, Missouri enrollment
- 26 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
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Mercy Hospital South
Acute Care Hospitals · Saint Louis, MOPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 63128 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.
SAINT LOUIS, MO 63128
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 Nezar El-ruwie's NPI number?
The NPI number for Nezar El-ruwie is 1649408659. It was assigned to this individual provider in the NPPES registry on June 29, 2009.
Where is Nezar El-ruwie located?
Nezar El-ruwie practices at 10010 Kennerly Rd, Saint Louis, MO 63128. The listed phone number is (314) 525-1000.
What is Nezar El-ruwie's specialty?
The primary specialty registered for this NPI is Psychiatry & Neurology, specializing in Psychiatry, with taxonomy code 2084P0800X.
Is Nezar El-ruwie enrolled in Medicare?
Yes. Nezar El-ruwie 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 Nezar El-ruwie's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Nezar El-ruwie reassigns Medicare benefits to 5 organizations: St Anthonys Physician Organization Hospitalist Services, L.C. (Saint Louis, MO), Mercy Clinic Adult Hospitalists - St. Louis, LLC (Saint Louis, MO), Mercy Clinic Adult Hospitalists- Jefferson, LLC (Festus, MO), Mercy Clinic Adult Hospitalists - Washington, LLC (Washington, MO) and State Of Missouri (Farmington, MO). 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 Nezar El-ruwie's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Nezar El-ruwie accept?
Health plans from Anthem Blue Cross and Blue Shield, Medica, Oscar Insurance Company and UnitedHealthcare list Nezar El-ruwie as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.
Is Nezar El-ruwie affiliated with any hospitals?
According to CMS data, Nezar El-ruwie is affiliated with Mercy Hospital South.
When was this NPI record last updated?
The NPPES record for Nezar El-ruwie was last updated on February 9, 2022. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 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. Nezar Ali El-Ruwie, M.D. · NPI 1649408659
Psychiatry physician in Saint Louis, Missouri. Individual provider, active in the CMS NPPES registry since June 29, 2009.
## Identity
- **NPI:** 1649408659 (Entity type: Individual)
- **Enumerated:** June 29, 2009
- **Primary specialty:** Psychiatry & Neurology - Psychiatry · taxonomy 2084P0800X
- **State license:** 2013002774 (Missouri)
- **Sole proprietor:** No
## Practice location
- **Address:** 10010 KENNERLY RD, Saint Louis, MO 63128-2106
- **Phone:** (314) 525-1000
## 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): St Anthonys Physician Organization Hospitalist Services, L.C. (NPI 1407216336, Saint Louis, MO); Mercy Clinic Adult Hospitalists - St. Louis, LLC (NPI 1841235108, Saint Louis, MO); Mercy Clinic Adult Hospitalists- Jefferson, LLC (NPI 1083052492, Festus, MO); Mercy Clinic Adult Hospitalists - Washington, LLC (NPI 1891943429, Washington, MO); State Of Missouri (NPI 1437106705, Farmington, MO) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2001
## Record status
- **NPPES last updated:** February 9, 2022
---
Source: [NPI Profile](https://npiprofile.com/npi/1649408659) · Data from the CMS NPPES public registry.