Cynthia Anne Korzelius, M.D.
Nephrology Physician · Newton, MA
Cynthia Anne Korzelius, M.D. is a nephrology physician with a practice address in Newton, Massachusetts, and NPI 1932175379, issued on Feb 26, 2006. Check the license (Massachusetts 156597, as entered in NPPES) on the Massachusetts Board of Registration in Medicine; the Medicare figures below come from public CMS files.
- Name
- Cynthia Anne Korzelius
- Credential
- M.D.
- Primary taxonomy
- Nephrology Physician 207RN0300X
- License number
- 156597 MA
Self-reported in NPPES; status is on the state search - Practice location
- 2014 Washington St, Newton, MA 02462
- Phone
- (617) 243-6433
- Enumerated
- Feb 26, 2006
- Record last updated
- Sep 11, 2025
- Fax
- (617) 243-5148
- Medicaid ID
- 3191214 MA
- Medicare enrollment
- Enrolled (PECOS I20040527001346); accepts Medicare assignment
- Medical or professional school
- Johns Hopkins University School Of Medicine, 1996
- Entity
- Type 1 · individual
Also registered at 2014 Washington St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Nooshin Abbasi, MD MPHInternal Medicine Physician1831888353
- Todd Abbott, M.D.Anatomic Pathology & Clinical Pathology Physician1013057454
- Tatiana Abrantes, MDStudent in an Organized Health Care Education/Training Program1962107250
- Maura Adrian, LICSWSocial Worker1083106918
- Davies Agyekum, M.D., PHDAnesthesiology Physician1134651425
- Tarik Alkasab, M.D., PH.D.Diagnostic Radiology Physician1154305803
Verify Cynthia Anne Korzelius in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMassachusetts Board of Registration in Medicine
Search for license 156597Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
97% fewer Medicare Part D claims than the average nephrology physician in 2024
44 Medicare Part D claims for 21 beneficiaries, against an average of 1,465 among the 10,986 providers of this specialty who prescribed in Part D.
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 one group practice
- Mass General Brigham Medical Group Suburban Massachusetts IncNewton, MA
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.
Other nephrology physician records in Massachusetts
- Amtul Aala, MDBoston, MA1174946347
- Reza Abdi, MDBoston, MA1356359368
- Marat Abdullin, M.D.Springfield, MA1619159712
- Vivian AbernethyBoston, MA1710960232
- Rekha Abichandani, M.D.Cambridge, MA1912033598
- Konstantin Abramov, M.D.Worcester, MA1992854707
- Krishna Agarwal, M.B.B.S.Springfield, MA1477916120
- Nikhil AgrawalBoston, MA1467722579
- Ayman Al Jurdi, M.D.Boston, MA1043690332
- Laith Al Rabadi, M.D.Boston, MA1821309188
Common questions
What is Cynthia Anne Korzelius, M.D.'s NPI number?
Cynthia Anne Korzelius, M.D.'s National Provider Identifier (NPI) is 1932175379, issued on Feb 26, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Cynthia Anne Korzelius, M.D. located?
The NPPES record lists a practice address at 2014 Washington St, Newton, MA, 02462. Phone: (617) 243-6433. Providers update this record themselves, so call before visiting.
How can I verify Cynthia Anne Korzelius, M.D.'s license?
NPPES lists Massachusetts license number 156597, 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 Cynthia Anne Korzelius, M.D. prescribe under Medicare Part D?
In 2024, Cynthia Anne Korzelius, M.D. had 44 Medicare Part D claims for 21 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.
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.