John Danziger, M.D.
Nephrology Physician · Boston, MA
John Danziger, M.D. is a nephrology physician with a practice address in Boston, Massachusetts, and NPI 1730161142, issued on Nov 20, 2005. Check the license (Massachusetts 213443, as entered in NPPES) on the Massachusetts Board of Registration in Medicine; the Medicare figures below come from public CMS files.
- Name
- John Danziger
- Credential
- M.D.
- Primary taxonomy
- Nephrology Physician 207RN0300X
- License number
- 213443 MA
Self-reported in NPPES; status is on the state search - Practice location
- 185 Pilgrim RD, Boston, MA 02215
- Phone
- (617) 632-9880
- Enumerated
- Nov 20, 2005
- Entity
- Type 1 · individual
Also registered at 185 Pilgrim RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Saleh AlazemiStudent in an Organized Health Care Education/Training Program1477719904
- Annemarie Anagnostopoulos, MDInternal Medicine Physician1487717005
- Mary Badaracco, M.D.Psychiatry Physician1932147220
- Begona Benito Villabriga, MDClinical Cardiac Electrophysiology Physician1528376464
- Evan Berg, M.D.Student in an Organized Health Care Education/Training Program1821261512
- Laurie BergeronNurse Practitioner1932073707
Verify John Danziger in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMassachusetts Board of Registration in Medicine
Search for license 213443Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS, AOA, NCCPA, AANPNot checked
46% fewer Medicare Part D claims than the average nephrology physician in 2024
822 Medicare Part D claims for 171 beneficiaries, against an average of 1,511 among the 8,473 providers of this specialty who prescribed in Part D. Brand-name drugs were 22% of claims.
Most prescribed
- Calcitriol124 claims
- Farxiga83 claims
- Lisinopril64 claims
- Amlodipine Besylate61 claims
- Torsemide54 claims
- Clonidine Hcl47 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.
4 hospital and facility affiliations
- 360 Healthcare LLCBurlington, MA
- Atrius Health IncDedham, MA
- Harvard Medical Faculty Phys AT Beth Israel Deaconess Med Ctr IncBoston, MA
- Malik MD Health Services, LLCBurlington, MA
Source: CMS Doctors and Clinicians affiliations; Hospital General Information (Care Compare) (data.cms.gov). Star ratings are CMS hospital ratings, not ratings of this provider.
Nephrology Physician providers in Massachusetts
There are 314 nephrology physician records in Massachusetts.
Other nephrology physician records in Massachusetts
- Amtul Aala, MDBoston, MA1174946347
- Reza Abdi, MDBoston, MA1356359368
- Vivian AbernethyBoston, MA1710960232
- Rekha Abichandani, M.D.Cambridge, MA1912033598
- Konstantin Abramov, M.D.Worcester, MA1992854707
- Krishna Agarwal, M.B.B.S.Springfield, MA1477916120
- Ahsan Alam, M.D.Boston, MA1598885980
- David Albert, M.D.Pittsfield, MA1386692531
- Saif Alenizi, M.D., M.P.H.Boston, MA1255680997
- Howard Alfred, M.D.Worcester, MA1942283627
Common questions
What is John Danziger, M.D.'s NPI number?
John Danziger, M.D.'s National Provider Identifier (NPI) is 1730161142, issued on Nov 20, 2005. An NPI identifies a provider in billing; it is not a license.
Where is John Danziger, M.D. located?
The NPPES record lists a practice address at 185 Pilgrim RD, Boston, MA, 02215. Phone: (617) 632-9880. Providers update this record themselves, so call before visiting.
How can I verify John Danziger, M.D.'s license?
NPPES lists Massachusetts license number 213443, as entered by the provider. Search the Massachusetts Board of Registration in Medicine at https://www.mass.gov/orgs/board-of-registration-in-medicine. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does John Danziger, M.D. prescribe under Medicare Part D?
In 2024, John Danziger, M.D. had 822 Medicare Part D claims for 171 beneficiaries; the average among nephrology physician prescribers was 1,511. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), loaded Aug 27, 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.
Every figure on PlainDoctor is rendered directly from the federal CMS NPPES registry, Medicare Part D, MIPS, and Open Payments records, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 27, 2026.