DR. SONIA KAMATH M.D.
NPI 1851347736
Internal Medicine - Nephrology in Worcester, MA
About Dr. Sonia Kamath M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. SONIA KAMATH M.D. (NPI 1851347736) is an individual nephrology provider in Worcester, Massachusetts, licensed in California (A103545) and active in the NPI registry since May 2006. She is enrolled in Medicare PECOS and is a graduate of Other (2001).
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. Sonia Kamath 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
2Medicare enrollment records show Sonia Kamath reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Hemet, CA 92545
- Reassigned Medicare billing, California enrollment
- 5,228 clinicians in this Medicare group
Wofford Heights, CA 93285
- Reassigned Medicare billing, California enrollment
- 264 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.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 01608 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.
WORCESTER, MA 01608
WORCESTER, MA 01608
WORCESTER, MA 01608
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 Sonia Kamath's NPI number?
The NPI number for Sonia Kamath is 1851347736. It was assigned to this individual provider in the NPPES registry on May 25, 2006.
Where is Sonia Kamath located?
Sonia Kamath practices at 123 Summer St, Worcester, MA 01608. The listed phone number is (508) 363-5000.
What is Sonia Kamath's specialty?
The primary specialty registered for this NPI is Internal Medicine, specializing in Nephrology, with taxonomy code 207RN0300X.
Is Sonia Kamath enrolled in Medicare?
Yes. Sonia Kamath 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 Sonia Kamath's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Sonia Kamath reassigns Medicare benefits to 2 organizations: Southern California Permanente Medical Group (Hemet, CA) and Clinica Sierra Vista (Wofford Heights, CA). 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 Sonia Kamath's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
When was this NPI record last updated?
The NPPES record for Sonia Kamath was last updated on June 17, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 16 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. Sonia Kamath, M.D. · NPI 1851347736
Nephrology physician in Worcester, Massachusetts. Individual provider, active in the CMS NPPES registry since May 25, 2006.
## Identity
- **NPI:** 1851347736 (Entity type: Individual)
- **Enumerated:** May 25, 2006
- **Primary specialty:** Internal Medicine - Nephrology · taxonomy 207RN0300X
- **State license:** A103545 (California)
- **Sole proprietor:** No
## Practice location
- **Address:** 123 SUMMER ST, Worcester, MA 01608-1216
- **Phone:** (508) 363-5000
## 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:** 2 organizations under Medicare reassignment (form CMS-855R): Southern California Permanente Medical Group (NPI 1013433465, Hemet, CA); Clinica Sierra Vista (NPI 1437151800, Wofford Heights, CA) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2001
## Record status
- **NPPES last updated:** June 17, 2025
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Source: [NPI Profile](https://npiprofile.com/npi/1851347736) · Data from the CMS NPPES public registry.