DR. ARMEN SANOSYAN MD
NPI 1538721295
Internal Medicine - Allergy & Immunology in Saint Louis, MO
About Dr. Armen Sanosyan Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. ARMEN SANOSYAN MD (NPI 1538721295) is an individual allergy & immunology provider in Saint Louis, Missouri, licensed in Missouri (2022020606) and active in the NPI registry since July 2019. He is enrolled in Medicare PECOS, is affiliated with Barnes Jewish Hospital, and is a graduate of Other (2009).
NPPES Registry Identity
Specialties & Licenses 3
Other Identifiers 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. Armen Sanosyan 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 Reassignment
Medicare enrollment records show Armen Sanosyan reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Saint Louis, MO 63110
- Reassigned Medicare billing, Missouri enrollment
- 1,133 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.
Hospital Affiliations CMS Care Compare 2
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Barnes Jewish Hospital
Acute Care Hospitals · Saint Louis, MOChristian Hospital Northeast
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
SAINT LOUIS, MO 63141
SAINT LOUIS, MO 63141
SAINT LOUIS, MO 63141
SAINT LOUIS, MO 63141
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 Armen Sanosyan's NPI number?
The NPI number for Armen Sanosyan is 1538721295. It was assigned to this individual provider in the NPPES registry on July 2, 2019.
Where is Armen Sanosyan located?
Armen Sanosyan practices at 10 Barnes West Dr Div Im Allergy And Immunology, Ste 200, Saint Louis, MO 63141. The listed phone number is (314) 996-8670.
What is Armen Sanosyan's specialty?
The primary specialty registered for this NPI is Internal Medicine, specializing in Allergy & Immunology, with taxonomy code 207RA0201X.
Is Armen Sanosyan enrolled in Medicare?
Yes. Armen Sanosyan 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 organization bills Medicare for Armen Sanosyan's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Armen Sanosyan reassigns Medicare benefits to Washington University (Saint Louis, MO). The 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 Armen Sanosyan's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Armen Sanosyan accept?
Health plans from Cox HealthPlans and UnitedHealthcare list Armen Sanosyan 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 Armen Sanosyan affiliated with any hospitals?
According to CMS data, Armen Sanosyan is affiliated with Barnes Jewish Hospital and Christian Hospital Northeast.
When was this NPI record last updated?
The NPPES record for Armen Sanosyan was last updated on November 3, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 11 months 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. Armen Sanosyan, MD · NPI 1538721295
Allergy & Immunology physician in Saint Louis, Missouri. Individual provider, active in the CMS NPPES registry since July 2, 2019.
## Identity
- **NPI:** 1538721295 (Entity type: Individual)
- **Enumerated:** July 2, 2019
- **Primary specialty:** Internal Medicine - Allergy & Immunology · taxonomy 207RA0201X
- **State license:** 2022020606 (Missouri)
- **Sole proprietor:** No
## Practice location
- **Address:** 10 BARNES WEST DR, DIV IM ALLERGY AND IMMUNOLOGY, STE 200, Saint Louis, MO 63141-6287
- **Phone:** (314) 996-8670 · **Fax:** (866) 362-4984
## 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:** Washington University (NPI 1992746903, Saint Louis, MO), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2009
## Record status
- **NPPES last updated:** November 3, 2025
- **Other identifiers:** Medicaid 200112358 (MO)
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Source: [NPI Profile](https://npiprofile.com/npi/1538721295) · Data from the CMS NPPES public registry.