DR. JAVAD CHRISTOPHER VAZIRI D.O.
NPI 1528354727
Internal Medicine - Critical Care Medicine in Saint Louis, MO
About Dr. Javad Christopher Vaziri D.o. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. JAVAD CHRISTOPHER VAZIRI D.O. (NPI 1528354727) is an individual critical care medicine provider in Saint Louis, Missouri, licensed in Missouri (2014007000) and active in the NPI registry since June 2011. He is enrolled in Medicare PECOS, is affiliated with Mercy Hospital St Louis, and is a graduate of Other (2011).
NPPES Registry Identity
Specialties & Licenses 2
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. Javad Christopher Vaziri D.o. 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
3Medicare enrollment records show Javad Vaziri reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Saint Louis, MO 63141
- Reassigned Medicare billing, Missouri enrollment
- 77 clinicians in this Medicare group
Chesterfield, MO 63017
- Reassigned Medicare billing, Missouri enrollment
- 263 clinicians in this Medicare group
Fort Smith, AR 72903
- Reassigned Medicare billing, Arkansas enrollment
- 658 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 5
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 St Louis
Acute Care Hospitals · Saint Louis, MOPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 63141 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 63141
SAINT LOUIS, MO 63141
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 Javad Vaziri's NPI number?
The NPI number for Javad Vaziri is 1528354727. It was assigned to this individual provider in the NPPES registry on June 26, 2011.
Where is Javad Vaziri located?
Javad Vaziri practices at 615 S New Ballas Rd, Saint Louis, MO 63141. The listed phone number is (314) 251-6486.
What is Javad Vaziri's specialty?
The primary specialty registered for this NPI is Internal Medicine, specializing in Critical Care Medicine, with taxonomy code 207RC0200X.
Is Javad Vaziri enrolled in Medicare?
Yes. Javad Vaziri 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 Javad Vaziri's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Javad Vaziri reassigns Medicare benefits to 3 organizations: Mercy Clinic Adult Critical Care, LLC (Saint Louis, MO), Mercy Aco Clinical Services Inc (Chesterfield, MO) and Mercy Clinic Fort Smith Communities (Fort Smith, AR). 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 Javad Vaziri's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
Is Javad Vaziri affiliated with any hospitals?
According to CMS data, Javad Vaziri is affiliated with Mercy Hospital St Louis.
When was this NPI record last updated?
The NPPES record for Javad Vaziri was last updated on June 8, 2016. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 10 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. Javad Christopher Vaziri, D.O. · NPI 1528354727
Critical Care Medicine physician in Saint Louis, Missouri. Individual provider, active in the CMS NPPES registry since June 26, 2011.
## Identity
- **NPI:** 1528354727 (Entity type: Individual)
- **Enumerated:** June 26, 2011
- **Primary specialty:** Internal Medicine - Critical Care Medicine · taxonomy 207RC0200X
- **State license:** 2014007000 (Missouri)
- **Sole proprietor:** No
## Practice location
- **Address:** 615 S NEW BALLAS RD, Saint Louis, MO 63141-8221
- **Phone:** (314) 251-6486
## 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:** 3 organizations under Medicare reassignment (form CMS-855R): Mercy Clinic Adult Critical Care, LLC (NPI 1730119421, Saint Louis, MO); Mercy Aco Clinical Services Inc (NPI 1063965093, Chesterfield, MO); Mercy Clinic Fort Smith Communities (NPI 1902073620, Fort Smith, AR) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2011
## Record status
- **NPPES last updated:** June 8, 2016
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Source: [NPI Profile](https://npiprofile.com/npi/1528354727) · Data from the CMS NPPES public registry.