Sarah Mueller Kadzielski, M.D.
Pediatrics Physician · Boston, MA
Sarah Mueller Kadzielski, M.D. is a pediatrics physician with a practice address in Boston, Massachusetts, and NPI 1558482323, issued on Apr 2, 2007. Check the license (Massachusetts 228762, as entered in NPPES) on the Massachusetts Board of Registration in Medicine; the Medicare figures below come from public CMS files.
- Name
- Sarah Mueller Kadzielski
- Credential
- M.D.
- Primary taxonomy
- Pediatrics Physician 208000000X
- License numbers
- 228762 MA
239043 MA
Self-reported in NPPES; status is on the state search - Practice location
- 55 Fruit St, Boston, MA 02114
- Phone
- (617) 726-8706
- Enumerated
- Apr 2, 2007
- Record last updated
- Apr 16, 2019 (not updated in 7 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20090612000312); accepts Medicare assignment
- Medical or professional school
- Tufts University School Of Medicine, 2006
- Entity
- Type 1 · individual
8 nearest pediatrics physician records → All 2,628 in Massachusetts → Look up another NPI →
Also registered at 55 Fruit St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Megan Abbott, MDAnesthesiology Physician1730839333
- Moustafa AbdallaStudent in an Organized Health Care Education/Training Program1952046062
- Shadi Abdar Esfahani, MD, MPHDiagnostic Radiology Physician1497137590
Verify Sarah Mueller Kadzielski in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMassachusetts Board of Registration in Medicine
Search for license 228762Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
72% fewer Medicare Part D claims than the average pediatrics physician in 2024
105 Medicare Part D claims, against an average of 375 among the 5,609 providers of this specialty who prescribed in Part D. Brand-name drugs were 32% of claims.
Most prescribed
- Omeprazole24 claims
- Linzess22 claims
- Lansoprazole15 claims
- Lubiprostone15 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 one group practice
- Massachusetts General Physicians Organization IncLexington, MA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Sarah Mueller Kadzielski among 2,628 pediatrics physician records in Massachusetts
Sarah Mueller Kadzielski, M.D. is one of 2,628 pediatrics physician records with a practice address in Massachusetts. 25% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2007, is newer than 52% of them.
- NPI issued2007 · 52% of these records are older, 38% newer
- In a Medicare fileYes · 25% of these records are
- In the CMS Doctors and Clinicians fileYes · 12% of these records are
- Graduated2006 · median 2010 among the 319 with a school on file
- Record last updated2019 · 63% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 208000000X and a Massachusetts practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
822 pediatrics physician records list a practice address in Boston
They are 822 of the 41,865 NPPES records with a practice address in Boston, and 2,628 pediatrics physician records in Massachusetts.
All 2,628 in Massachusetts → Every provider in Boston → Pediatrics Physician nationwide →
The 8 pediatrics physician records with the nearest ZIP codes
- Ronald Benz, MDBoston, MA 021141851381107
- Lawrence Cohan, MDBoston, MA 021141083604508
- Charles Cote, MDBoston, MA 021141134110265
- Mitchell Feldman, MDBoston, MA 021141598755688
- Alison Friedmann, MDBoston, MA 021141619967346
- Mark Goldstein, MDBoston, MA 021141588654602
- Marc Grella, MDBoston, MA 021141699765750
- Maryetta King, M.D.Boston, MA 021141962492603
Common questions
What is Sarah Mueller Kadzielski, M.D.'s NPI number?
Sarah Mueller Kadzielski, M.D.'s National Provider Identifier (NPI) is 1558482323, issued on Apr 2, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Sarah Mueller Kadzielski, M.D. located?
The NPPES record lists a practice address at 55 Fruit St, Boston, MA, 02114. Phone: (617) 726-8706. Providers update this record themselves, so call before visiting.
How can I verify Sarah Mueller Kadzielski, M.D.'s license?
NPPES lists Massachusetts license number 228762, 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 Sarah Mueller Kadzielski, M.D. prescribe under Medicare Part D?
In 2024, Sarah Mueller Kadzielski, M.D. had 105 Medicare Part D claims; the average among pediatrics physician prescribers was 375. 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.