NPPES file of Aug 9, 2026

Jeffrey Harrison William, M.D.

Nephrology Physician · Boston, MA

Jeffrey Harrison William, M.D. is a nephrology physician with a practice address in Boston, Massachusetts, and NPI 1033439716, issued on Jun 4, 2010. Check the license (Massachusetts 252503, 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
1033439716
Name
Jeffrey Harrison William
Credential
M.D.
Primary taxonomy
Nephrology Physician 207RN0300X
License numbers
252503 MA
244088 MA
Self-reported in NPPES; status is on the state search
Practice location
171 Pilgrim RD, Boston, MA 02215
Phone
(617) 632-9880
Enumerated
Jun 4, 2010
Record last updated
Sep 8, 2015 (not updated in 11 years: call before relying on the address or phone)
Fax
(617) 632-9890
Medicare enrollment
Enrolled (PECOS I20150811003893); accepts Medicare assignment
Medical or professional school
Tufts University School Of Medicine, 2010
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 171 Pilgrim RD

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

  1. Jaeine Lee, MDNephrology Physician1922688779
  2. Nang San Hti Lar Seng, MDNephrology Physician1619558533

Verify Jeffrey Harrison William 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 252503
    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

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8% fewer Medicare Part D claims than the average nephrology physician in 2024

1,344 Medicare Part D claims for 274 beneficiaries, against an average of 1,465 among the 10,986 providers of this specialty who prescribed in Part D. Brand-name drugs were 17% of claims.

  1. Jeffrey William1,344
  2. Specialty average1,465

Most prescribed

  1. Calcitriol217 claims
  2. Losartan Potassium131 claims
  3. Amlodipine Besylate101 claims
  4. Lisinopril98 claims
  5. Farxiga76 claims
  6. Jardiance73 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.

Industry payments in 2024: $127.31

1 payment: food and beverage; the largest payer was Novo Nordisk Inc. The 8,230 providers of this specialty with any payment received $3,091.37 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Jeffrey William$127.31
  2. Specialty average$3,091.37

Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.

Bills Medicare through 2 group practices

  1. Atrius Health IncDedham, MA
  2. Harvard Medical Faculty Phys AT Beth Israel Deaconess Med Ctr IncBoston, 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

  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 Jeffrey Harrison William, M.D.'s NPI number?

Jeffrey Harrison William, M.D.'s National Provider Identifier (NPI) is 1033439716, issued on Jun 4, 2010. An NPI identifies a provider in billing; it is not a license.

Where is Jeffrey Harrison William, M.D. located?

The NPPES record lists a practice address at 171 Pilgrim RD, Boston, MA, 02215. Phone: (617) 632-9880. Providers update this record themselves, so call before visiting.

How can I verify Jeffrey Harrison William, M.D.'s license?

NPPES lists Massachusetts license number 252503, 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 Jeffrey Harrison William, M.D. prescribe under Medicare Part D?

In 2024, Jeffrey Harrison William, M.D. had 1,344 Medicare Part D claims for 274 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.