NPPES file of Aug 9, 2026

Sonia Kamath, M.D.

Nephrology Physician · Worcester, MA

Sonia Kamath, M.D. is a nephrology physician with a practice address in Worcester, Massachusetts, and NPI 1851347736, issued on May 25, 2006. Check the license (Massachusetts 226219, as entered in NPPES) on the Massachusetts Board of Registration in Medicine; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1851347736
Name
Sonia Kamath
Credential
M.D.
Primary taxonomy
Nephrology Physician 207RN0300X
License numbers
226219 MA
A103545 CA
Self-reported in NPPES; status is on the state search
Practice location
123 Summer St, Worcester, MA 01608
Phone
(508) 363-5000
Enumerated
May 25, 2006
Record last updated
Jun 17, 2025
Medicare enrollment
Enrolled (PECOS I20090110000017); accepts Medicare assignment
Telehealth
Offers telehealth (CMS)
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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Also registered at 123 Summer St

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Annie Abraham, M.D.Internal Medicine Physician1962437061
  2. Yem AbulhamayelInternal Medicine Physician1730496381
  3. Freda Agyemang, NURSE PRACTITIONERFamily Nurse Practitioner1134733280
  4. Hajrah AhsanHospitalist Physician1497367395
  5. Padmastuti Akella, MDCritical Care Medicine (Internal Medicine) Physician1467988873
  6. Ibragim Al-Seykal, M.D.Student in an Organized Health Care Education/Training Program1730615261

Verify Sonia Kamath in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMassachusetts Board of Registration in Medicine
    Search for license 226219    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Open the Massachusetts license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

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24% fewer Medicare Part D claims than the average nephrology physician in 2024

1,114 Medicare Part D claims for 331 beneficiaries, against an average of 1,465 among the 10,986 providers of this specialty who prescribed in Part D.

  1. Sonia Kamath1,114
  2. Specialty average1,465

Most prescribed

  1. Lisinopril96 claims
  2. Furosemide72 claims
  3. Potassium Chloride68 claims
  4. Terazosin Hcl67 claims
  5. Amlodipine Besylate66 claims
  6. Hydralazine Hcl61 claims

Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.

Bills Medicare through 2 group practices

  1. Clinica Sierra VistaBakersfield, CA
  2. Southern California Permanente Medical GroupTehachapi, CA

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

Nephrology Physician providers in Massachusetts

There are 417 nephrology physician records in Massachusetts.

All 417 in Massachusetts → Every provider in Worcester →

Other nephrology physician records in Massachusetts

  1. Amtul Aala, MDBoston, MA1174946347
  2. Reza Abdi, MDBoston, MA1356359368
  3. Marat Abdullin, M.D.Springfield, MA1619159712
  4. Vivian AbernethyBoston, MA1710960232
  5. Rekha Abichandani, M.D.Cambridge, MA1912033598
  6. Konstantin Abramov, M.D.Worcester, MA1992854707
  7. Krishna Agarwal, M.B.B.S.Springfield, MA1477916120
  8. Nikhil AgrawalBoston, MA1467722579
  9. Ayman Al Jurdi, M.D.Boston, MA1043690332
  10. Laith Al Rabadi, M.D.Boston, MA1821309188

Common questions

What is Sonia Kamath, M.D.'s NPI number?

Sonia Kamath, M.D.'s National Provider Identifier (NPI) is 1851347736, issued on May 25, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Sonia Kamath, M.D. located?

The NPPES record lists a practice address at 123 Summer St, Worcester, MA, 01608. Phone: (508) 363-5000. Providers update this record themselves, so call before visiting.

How can I verify Sonia Kamath, M.D.'s license?

NPPES lists Massachusetts license number 226219, as entered by the provider. Search the Massachusetts Board of Registration in Medicine at https://findmydoctor.mass.gov/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.

How much does Sonia Kamath, M.D. prescribe under Medicare Part D?

In 2024, Sonia Kamath, M.D. had 1,114 Medicare Part D claims for 331 beneficiaries; the average among nephrology physician prescribers was 1,465. Part D covers Medicare prescriptions only.

Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.

Written with AI tools from the named public files; every figure is computed from those files (how it is made).

Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.