Lisa S. Gussak, M.D.
Family Medicine Physician · Worcester, MA
Lisa S. Gussak, M.D. is a family medicine physician with a practice address in Worcester, Massachusetts, and NPI 1780667543, issued on Nov 25, 2005. Check the license (Massachusetts 155167, as entered in NPPES) on the Massachusetts Board of Registration in Medicine; the Medicare figures below come from public CMS files.
- Name
- Lisa S. Gussak
- Credential
- M.D.
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- 155167 MA
Self-reported in NPPES; status is on the state search - Practice location
- 26 Queen St, Worcester, MA 01610
- Phone
- (508) 860-7700
- Enumerated
- Nov 25, 2005
- Record last updated
- Oct 24, 2018 (not updated in 8 years: call before relying on the address or phone)
- Fax
- (508) 860-7929
- Medicaid ID
- 0109061 MA
- Medicare enrollment
- Enrolled (PECOS I20080313000551); accepts Medicare assignment
- Medical or professional school
- University Of Connecticut School Of Medicine, 1994
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 2,265 in Massachusetts → Look up another NPI →
Also registered at 26 Queen St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Kevin Abraham, M.D.Family Medicine Physician1689037673
- Albertha Adwetewa-Badu, FNP-BC, FNP-CFamily Nurse Practitioner1427238260
- Hiyam Ahmed, MBBSStudent in an Organized Health Care Education/Training Program1669266300
- Ime Akpan-MahoneyRegistered Nurse1952732547
- Benjamin Alfred, NPPrimary Care Nurse Practitioner1366778953
- Bronwyn Alfred, FNPFamily Nurse Practitioner1164843843
Verify Lisa S. Gussak in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMassachusetts Board of Registration in Medicine
Search for license 155167Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
95% fewer Medicare Part D claims than the average family medicine physician in 2024
168 Medicare Part D claims for 78 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. Brand-name drugs were 17% of claims.
Most prescribed
- Atorvastatin Calcium15 claims
- Eliquis12 claims
- Omeprazole11 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).
Lisa S. Gussak among 2,265 family medicine physician records in Massachusetts
Lisa S. Gussak, M.D. is one of 2,265 family medicine physician records with a practice address in Massachusetts. 80% 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, 86% newer
- In a Medicare fileYes · 80% of these records are
- In the CMS Doctors and Clinicians fileYes · 68% of these records are
- Graduated1994 · median 2006 among the 1,529 with a school on file
- Record last updated2018 · 59% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207Q00000X and a Massachusetts practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
168 family medicine physician records list a practice address in Worcester
They are 168 of the 13,166 NPPES records with a practice address in Worcester, and 2,265 family medicine physician records in Massachusetts.
All 2,265 in Massachusetts → Every provider in Worcester → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- Philip Bolduc, MDWorcester, MA 016101669460051
- Lucy Candib, MDWorcester, MA 016101093726382
- Lisa Carter, FAMILY PRACTICEWorcester, MA 016101972514180
- Penelope Dillon, FNP-C ,PSYCH NP-C, CWorcester, MA 016101558393330
- Warren Ferguson, M.D.Worcester, MA 016101447312798
- Quang Le, M.D.Worcester, MA 016101578665998
- Valerie Pietry, FAMILY PRACTICEWorcester, MA 016101356352439
- David Rosenfield, MDWorcester, MA 016101467562256
Common questions
What is Lisa S. Gussak, M.D.'s NPI number?
Lisa S. Gussak, M.D.'s National Provider Identifier (NPI) is 1780667543, issued on Nov 25, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Lisa S. Gussak, M.D. located?
The NPPES record lists a practice address at 26 Queen St, Worcester, MA, 01610. Phone: (508) 860-7700. Providers update this record themselves, so call before visiting.
How can I verify Lisa S. Gussak, M.D.'s license?
NPPES lists Massachusetts license number 155167, 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 Lisa S. Gussak, M.D. prescribe under Medicare Part D?
In 2024, Lisa S. Gussak, M.D. had 168 Medicare Part D claims for 78 beneficiaries; the average among family medicine physician prescribers was 3,544. Part D covers Medicare prescriptions only.
What is Lisa S. Gussak, 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.