Susan L. Zweizig, M.D.
Gynecologic Oncology Physician · Worcester, MA
Susan L. Zweizig, M.D. is a gynecologic oncology physician with a practice address in Worcester, Massachusetts, and NPI 1992786925, issued on Nov 8, 2005. Check the license (Massachusetts 79624, as entered in NPPES) on the Massachusetts Board of Registration in Medicine; the Medicare figures below come from public CMS files.
- Name
- Susan L. Zweizig
- Credential
- M.D.
- Primary taxonomy
- Gynecologic Oncology Physician 207VX0201X
- License number
- 79624 MA
Self-reported in NPPES; status is on the state search - Practice location
- 33 Kendall St, Worcester, MA 01605
- Phone
- (508) 334-1160
- Enumerated
- Nov 8, 2005
- Record last updated
- Sep 2, 2021 (not updated in 5 years: call before relying on the address or phone)
- Fax
- (508) 334-1174
- Medicaid ID
- 110055114A MA
- Medicare enrollment
- Enrolled (PECOS I20050524001230); accepts Medicare assignment
- Medical or professional school
- Harvard Medical School, 1985
- Entity
- Type 1 · individual
8 nearest gynecologic oncology physician records → All 47 in Massachusetts → Look up another NPI →
Also registered at 33 Kendall St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Elizabeth Allocco, M.D.Obstetrics & Gynecology Physician1114313517
- Joshua Altschuler, MDUrology Physician1003471962
- Armando Arroyo, MDReproductive Endocrinology Physician1538188420
- Philip Ayvazian, MDUrology Physician1487654984
- Courtney Barry, ADN, RNDoula1891519526
- Erin Bednarek, N.P.Women's Health Nurse Practitioner1003114794
Verify Susan L. Zweizig in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMassachusetts Board of Registration in Medicine
Search for license 79624Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
2.1 times the Medicare Part D claims of the average gynecologic oncology physician in 2024
417 Medicare Part D claims for 84 beneficiaries, against an average of 195 among the 1,475 providers of this specialty who prescribed in Part D. Brand-name drugs were 22% of claims.
Most prescribed
- Dexamethasone48 claims
- Ondansetron Hcl41 claims
- Prochlorperazine Maleate38 claims
- Megestrol Acetate33 claims
- Eliquis19 claims
- Zejula17 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.
The MIPS final score for 2023 (Medicare payment program): 97 of 100
The Merit-based Incentive Payment System score is reported for this clinician. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023; category weights for 2023 (qpp.cms.gov).
Bills Medicare through one group practice
- Umass Memorial Medical Group IncWorcester, MA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Susan L. Zweizig among 47 gynecologic oncology physician records in Massachusetts
Susan L. Zweizig, M.D. is one of 47 gynecologic oncology physician records with a practice address in Massachusetts. 83% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2005, is newer than 0% of them.
- NPI issued2005 · 0% of these records are older, 81% newer
- In a Medicare fileYes · 83% of these records are
- In the CMS Doctors and Clinicians fileYes · 64% of these records are
- Graduated1985 · median 2008 among the 30 with a school on file
- Record last updated2021 · 57% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207VX0201X and a Massachusetts practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Gynecologic Oncology Physician providers in Massachusetts
There are 47 gynecologic oncology physician records in Massachusetts.
All 47 in Massachusetts → Every provider in Worcester → Gynecologic Oncology Physician nationwide →
The 8 gynecologic oncology physician records with the nearest ZIP codes
- Harrison Ball, M.D.Worcester, MA 016051336130509
- Joanna Cain, M.D.Worcester, MA 016051093859753
- Annette Chen, M.D.Worcester, MA 016051215928593
- Sarah Hughes, M.D.Worcester, MA 016051669663761
- Sharmilee Korets, MDWorcester, MA 016051669622619
- Larissa Mattei, MDWorcester, MA 016051942730817
- Caroline Nitschmann, MDBurlington, MA 018051538483003
- Valena Wright, MDBurlington, MA 018051144387432
Common questions
What is Susan L. Zweizig, M.D.'s NPI number?
Susan L. Zweizig, M.D.'s National Provider Identifier (NPI) is 1992786925, issued on Nov 8, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Susan L. Zweizig, M.D. located?
The NPPES record lists a practice address at 33 Kendall St, Worcester, MA, 01605. Phone: (508) 334-1160. Providers update this record themselves, so call before visiting.
How can I verify Susan L. Zweizig, M.D.'s license?
NPPES lists Massachusetts license number 79624, 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 Susan L. Zweizig, M.D. prescribe under Medicare Part D?
In 2024, Susan L. Zweizig, M.D. had 417 Medicare Part D claims for 84 beneficiaries; the average among gynecologic oncology physician prescribers was 195. Part D covers Medicare prescriptions only.
What is Susan L. Zweizig, M.D.'s MIPS final score?
The 2023 MIPS final score is 97 of 100. The average among 454,083 clinicians with a measured score was 83.5.
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.