DR. ARMINE NADIRYAN M.D.
NPI 1346477486
Internal Medicine in Chesterfield, MO
About Dr. Armine Nadiryan M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. ARMINE NADIRYAN M.D. (NPI 1346477486) is an individual internal medicine provider in Chesterfield, Missouri, licensed in Missouri (2012020298) and active in the NPI registry since June 2009. She is enrolled in Medicare PECOS, is affiliated with Mercy Hospital St Louis, and is a graduate of Other (1997).
NPPES Registry Identity
Specialties & Licenses
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. Armine Nadiryan 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
6Medicare enrollment records show Armine Nadiryan reassigns Medicare billing to 6 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Chesterfield, MO 63017
- Reassigned Medicare billing, Missouri enrollment
- 215 clinicians in this Medicare group
Saint Louis, MO 63141
- Reassigned Medicare billing, Missouri enrollment
- 435 clinicians in this Medicare group
Saint Louis, MO 63141
- Reassigned Medicare billing, Missouri enrollment
- 326 clinicians in this Medicare group
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
Washington, MO 63090
- Reassigned Medicare billing, Missouri enrollment
- 261 clinicians in this Medicare group
Festus, MO 63028
- Reassigned Medicare billing, Missouri enrollment
- 299 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 6
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 3
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, MOMercy Hospital South
Acute Care Hospitals · Saint Louis, MOSt Lukes Hospital
Acute Care Hospitals · Chesterfield, MOPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 63017 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Medicare Quality Performance CMS QPP · MIPS
Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.
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.
CHESTERFIELD, MO 63017
CHESTERFIELD, MO 63017
CHESTERFIELD, MO 63017
CHESTERFIELD, MO 63017
CHESTERFIELD, MO 63017
CHESTERFIELD, MO 63017
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 Armine Nadiryan's NPI number?
The NPI number for Armine Nadiryan is 1346477486. It was assigned to this individual provider in the NPPES registry on June 16, 2009.
Where is Armine Nadiryan located?
Armine Nadiryan practices at 222 S Woods Mill Rd Suite 530 North, Chesterfield, MO 63017. The listed phone number is (314) 205-6736.
What is Armine Nadiryan's specialty?
The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.
Is Armine Nadiryan enrolled in Medicare?
Yes. Armine Nadiryan 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 Armine Nadiryan's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Armine Nadiryan reassigns Medicare benefits to 6 organizations: Physician Specialists Of St Lukes LLC (Chesterfield, MO), Mercy Hospitals East Communities (Saint Louis, MO), Mercy Clinic Adult Hospitalists - St. Louis, LLC (Saint Louis, MO), St Anthonys Physician Organization Hospitalist Services, L.C. (Saint Louis, MO), Mercy Clinic Adult Hospitalists - Washington, LLC (Washington, MO) and 1 more organization, listed in the Medicare section above. 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 Armine Nadiryan's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Armine Nadiryan accept?
Health plans from Anthem Blue Cross and Blue Shield and Oscar Insurance Company list Armine Nadiryan 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 Armine Nadiryan affiliated with any hospitals?
According to CMS data, Armine Nadiryan is affiliated with Mercy Hospital St Louis, Mercy Hospital South and St Lukes Hospital.
When was this NPI record last updated?
The NPPES record for Armine Nadiryan was last updated on September 10, 2024. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 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. Armine Nadiryan, M.D. · NPI 1346477486
Internal Medicine physician in Chesterfield, Missouri. Individual provider, active in the CMS NPPES registry since June 16, 2009.
## Identity
- **NPI:** 1346477486 (Entity type: Individual)
- **Enumerated:** June 16, 2009
- **Primary specialty:** Internal Medicine · taxonomy 207R00000X
- **State license:** 2012020298 (Missouri)
- **Sole proprietor:** No
## Practice location
- **Address:** 222 S WOODS MILL RD, SUITE 530 NORTH, Chesterfield, MO 63017-3625
- **Phone:** (314) 205-6736
## 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:** 6 organizations under Medicare reassignment (form CMS-855R): Physician Specialists Of St Lukes LLC (NPI 1235168410, Chesterfield, MO); Mercy Hospitals East Communities (NPI 1851431738, Saint Louis, MO); Mercy Clinic Adult Hospitalists - St. Louis, LLC (NPI 1841235108, Saint Louis, MO); St Anthonys Physician Organization Hospitalist Services, L.C. (NPI 1407216336, Saint Louis, MO); Mercy Clinic Adult Hospitalists - Washington, LLC (NPI 1891943429, Washington, MO); and 1 more · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 1997
## Record status
- **NPPES last updated:** September 10, 2024
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Source: [NPI Profile](https://npiprofile.com/npi/1346477486) · Data from the CMS NPPES public registry.