Peggy W. Wu, M.D.
Rheumatology Physician · Worcester, MA
Peggy W. Wu, M.D. is a rheumatology physician with a practice address in Worcester, Massachusetts, and NPI 1366608259, issued on Jul 31, 2008. Check the license (Massachusetts 253058, as entered in NPPES) on the Massachusetts Board of Registration in Medicine; the Medicare figures below come from public CMS files.
- Name
- Peggy W. Wu
- Credential
- M.D.
- Primary taxonomy
- Rheumatology Physician 207RR0500X
- License number
- 253058 MA
Self-reported in NPPES; status is on the state search - Practice location
- 119 Belmont St, Worcester, MA 01605
- Phone
- (508) 334-5224
- Enumerated
- Jul 31, 2008
- Record last updated
- Jan 12, 2023
- Fax
- (508) 334-1053
- Medicaid ID
- 110093096A MA
- Medicare enrollment
- Enrolled (PECOS I20120910000728); accepts Medicare assignment
- Medical or professional school
- Rush Medical College Of Rush University, 2003
- Telehealth
- Offers telehealth (CMS)
- 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.
- Elisa Abdulhayoglu, MDNeonatal-Perinatal Medicine Physician1053346007
- Edward Adams, MDInternal Medicine Physician1881157444
- Redwan Ahmed, MDFamily Medicine Physician1356830103
- Hashim Al-Ani, MDInternal Medicine Physician1235863358
- Muhammad Albanna, MDInternal Medicine Physician1194404681
- Yury Aleksandrovich, MDInternal Medicine Physician1912469388
Verify Peggy W. Wu in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMassachusetts Board of Registration in Medicine
Search for license 253058Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
30% fewer Medicare Part D claims than the average rheumatology physician in 2024
1,378 Medicare Part D claims for 236 beneficiaries, against an average of 1,978 among the 6,301 providers of this specialty who prescribed in Part D. 63 claims were for opioids.
Most prescribed
- Prednisone230 claims
- Methotrexate141 claims
- Hydroxychloroquine Sulfate109 claims
- Enbrel Sureclick107 claims
- Humira(Cf) Pen90 claims
- Allopurinol79 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).
Peggy W. Wu among 343 rheumatology physician records in Massachusetts
Peggy W. Wu, 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 2008, is newer than 62% of them.
- NPI issued2008 · 62% of these records are older, 31% newer
- In a Medicare fileYes · 73% of these records are
- In the CMS Doctors and Clinicians fileYes · 62% of these records are
- Graduated2003 · median 2004 among the 212 with a school on file
- Record last updated2023 · 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
- Nancy Liu, M.D.Worcester, MA 016051265416531
- Evelyn Love, M.D.Worcester, MA 016051164538922
- Timothy McAlindon, MD, MPHWorcester, MA 016051518931625
Common questions
What is Peggy W. Wu, M.D.'s NPI number?
Peggy W. Wu, M.D.'s National Provider Identifier (NPI) is 1366608259, issued on Jul 31, 2008. An NPI identifies a provider in billing; it is not a license.
Where is Peggy W. Wu, 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 Peggy W. Wu, M.D.'s license?
NPPES lists Massachusetts license number 253058, 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 Peggy W. Wu, M.D. prescribe under Medicare Part D?
In 2024, Peggy W. Wu, M.D. had 1,378 Medicare Part D claims for 236 beneficiaries; the average among rheumatology physician prescribers was 1,978. Part D covers Medicare prescriptions only.
What is Peggy W. Wu, 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.