Nancy Liu, M.D.
Rheumatology Physician · Worcester, MA
Nancy Liu, M.D. is a rheumatology physician with a practice address in Worcester, Massachusetts, and NPI 1265416531, issued on Dec 1, 2005. Check the license (Massachusetts 52835, as entered in NPPES) on the Massachusetts Board of Registration in Medicine; the Medicare figures below come from public CMS files.
- Name
- Nancy Liu
- Credential
- M.D.
- Primary taxonomy
- Rheumatology Physician 207RR0500X
- License number
- 52835 MA
Self-reported in NPPES; status is on the state search - Practice location
- 119 Belmont St, Worcester, MA 01605
- Phone
- (508) 334-5224
- Enumerated
- Dec 1, 2005
- Record last updated
- Oct 30, 2020 (not updated in 6 years: call before relying on the address or phone)
- Medicaid ID
- 110065178A MA
- Entity
- Type 1 · individual
8 nearest rheumatology physician records → All 343 in Massachusetts → Look up another NPI →
Also registered at 119 Belmont St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Nancy Liu in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMassachusetts Board of Registration in Medicine
Search for license 52835Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
37% fewer Medicare Part D claims than the average rheumatology physician in 2024
1,251 Medicare Part D claims for 182 beneficiaries, against an average of 1,978 among the 6,301 providers of this specialty who prescribed in Part D. Brand-name drugs were 24% of claims. 140 claims were for opioids.
Most prescribed
- Methotrexate129 claims
- Celecoxib126 claims
- Prednisone116 claims
- Hydroxychloroquine Sulfate97 claims
- Tramadol Hcl87 claims
- Xeljanz55 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).
Nancy Liu among 343 rheumatology physician records in Massachusetts
Nancy Liu, M.D. is one of 343 rheumatology physician records with a practice address in Massachusetts. 73% 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 · 73% of these records are
- In the CMS Doctors and Clinicians fileNo · 62% of these records are
- Record last updated2020 · 62% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RR0500X and a Massachusetts practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Rheumatology Physician providers in Massachusetts
There are 343 rheumatology physician records in Massachusetts.
All 343 in Massachusetts → Every provider in Worcester → Rheumatology Physician nationwide →
The 8 rheumatology physician records with the nearest ZIP codes
- Norman Bress, M.D.Worcester, MA 016051407828734
- Ratnesh Chopra, M.D.Worcester, MA 016051710944137
- Beata Cieslak-Skowronska, M.D.Worcester, MA 016051447226642
- Deborah Demarco, M.D.Worcester, MA 016051215910849
- Jonathan Kay, MDWorcester, MA 016051699766964
- Evelyn Love, M.D.Worcester, MA 016051164538922
- Timothy McAlindon, MD, MPHWorcester, MA 016051518931625
- Raymond Pertusi, DOWorcester, MA 016051679536312
Common questions
What is Nancy Liu, M.D.'s NPI number?
Nancy Liu, M.D.'s National Provider Identifier (NPI) is 1265416531, issued on Dec 1, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Nancy Liu, M.D. located?
The NPPES record lists a practice address at 119 Belmont St, Worcester, MA, 01605. Phone: (508) 334-5224. Providers update this record themselves, so call before visiting.
How can I verify Nancy Liu, M.D.'s license?
NPPES lists Massachusetts license number 52835, 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 Nancy Liu, M.D. prescribe under Medicare Part D?
In 2024, Nancy Liu, M.D. had 1,251 Medicare Part D claims for 182 beneficiaries; the average among rheumatology physician prescribers was 1,978. Part D covers Medicare prescriptions only.
What is Nancy Liu, 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.