SONYA CHALASANI RAYAN M.D.
NPI 1134331978
Internal Medicine - Infectious Disease in Carmel, IN
About Sonya Chalasani Rayan M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
SONYA CHALASANI RAYAN M.D. (NPI 1134331978) is an individual infectious disease provider in Carmel, Indiana, licensed in Indiana (01095706A) and active in the NPI registry since May 2007. She is enrolled in Medicare PECOS, is affiliated with Ascension St Vincent Hospital, and maintains a secondary practice location in Mequon.
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
Sonya Chalasani Rayan 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 Reassignment
Medicare enrollment records show Sonya Rayan reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Carmel, IN 46032
- Reassigned Medicare billing, Indiana enrollment
- 945 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.
Ascension St Vincent Hospital
Acute Care Hospitals · Indianapolis, INAscension St Vincent Fishers
Acute Care Hospitals · Fishers, INPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 46032 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 3
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
CARMEL, IN 46032
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 Sonya Rayan's NPI number?
The NPI number for Sonya Rayan is 1134331978. It was assigned to this individual provider in the NPPES registry on May 4, 2007.
Where is Sonya Rayan located?
Sonya Rayan practices at 11455 N Meridian St Ste 200, Carmel, IN 46032. The listed phone number is (317) 582-8180.
What is Sonya Rayan's specialty?
The primary specialty registered for this NPI is Internal Medicine, specializing in Infectious Disease, with taxonomy code 207RI0200X.
Is Sonya Rayan enrolled in Medicare?
Yes. Sonya Rayan 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 Sonya Rayan's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Sonya Rayan reassigns Medicare benefits to St. Vincent Medical Group, Inc. (Carmel, IN). 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 Sonya Rayan's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Sonya Rayan accept?
Health plans from Ambetter Health, Ambetter from Buckeye Health Plan, Ambetter from Meridian and CareSource list Sonya Rayan 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 Sonya Rayan affiliated with any hospitals?
According to CMS data, Sonya Rayan is affiliated with Ascension St Vincent Hospital and Ascension St Vincent Fishers.
When was this NPI record last updated?
The NPPES record for Sonya Rayan was last updated on March 18, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 19 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.
# Sonya Chalasani Rayan, M.D. · NPI 1134331978
Infectious Disease physician in Carmel, Indiana. Individual provider, active in the CMS NPPES registry since May 4, 2007.
## Identity
- **NPI:** 1134331978 (Entity type: Individual)
- **Enumerated:** May 4, 2007
- **Primary specialty:** Internal Medicine - Infectious Disease · taxonomy 207RI0200X
- **State license:** 01095706A (Indiana)
- **Sole proprietor:** No
## Practice location
- **Address:** 11455 N MERIDIAN ST STE 200, Carmel, IN 46032-1680
- **Phone:** (317) 582-8180
## 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:** St. Vincent Medical Group, Inc. (NPI 1811881527, Carmel, IN), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2003
## Record status
- **NPPES last updated:** March 18, 2025
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Source: [NPI Profile](https://npiprofile.com/npi/1134331978) · Data from the CMS NPPES public registry.