Donny Li-Fan Chang, M.D., PH.D.
Endocrinology, Diabetes & Metabolism Physician · Leominster, MA
Donny Li-Fan Chang, M.D., PH.D. is an endocrinology, diabetes & metabolism physician with a practice address in Leominster, Massachusetts, and NPI 1114188265, issued on Jun 21, 2008. Check the license (Massachusetts 254814, as entered in NPPES) on the Massachusetts Board of Registration in Medicine; the Medicare figures below come from public CMS files.
- Name
- Donny Li-Fan Chang
- Credential
- M.D., PH.D.
- Primary taxonomy
- Endocrinology, Diabetes & Metabolism Physician 207RE0101X
- License number
- 254814 MA
Self-reported in NPPES; status is on the state search - Practice location
- 225 New Lancaster Road, Leominster, MA 01453
- Phone
- (508) 425-5880
- Enumerated
- Jun 21, 2008
- Record last updated
- Dec 13, 2018 (not updated in 8 years: call before relying on the address or phone)
- Fax
- (978) 466-3395
- Medicaid ID
- 110093633/A MA
- Medicare enrollment
- Enrolled (PECOS I20130726000267); accepts Medicare assignment
- Medical or professional school
- Boston University School Of Medicine, 2008
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest endocrinology, diabetes & metabolism physician records → All 522 in Massachusetts → Look up another NPI →
Also registered at 225 New Lancaster Road
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Renee Beaulieu, APRNPediatric Nurse Practitioner1689989667
- Robin Gay, PH.D.Clinical Psychologist1629215751
- Michelle Maramarco, LCSWClinical Social Worker1902389034
- Cynthia Royal, MSN, APRN, NP-CFamily Nurse Practitioner1851733802
- Michele Sinopoli, M.D.Obstetrics & Gynecology Physician1750423125
- Amanda Vitko, M.D.Family Medicine Physician1902193444
Verify Donny Li-Fan Chang in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMassachusetts Board of Registration in Medicine
Search for license 254814Check 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 endocrinology, diabetes & metabolism physician in 2024
1,854 Medicare Part D claims for 274 beneficiaries, against an average of 2,630 among the 8,223 providers of this specialty who prescribed in Part D. Brand-name drugs were 48% of claims.
Most prescribed
- Levothyroxine Sodium166 claims
- Alendronate Sodium143 claims
- Trulicity115 claims
- Metformin Hcl113 claims
- Glipizide111 claims
- Lantus Solostar82 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.
Industry payments in 2024: $23.05
1 payment: food and beverage; the largest payer was Medtronic, Inc. The 5,661 providers of this specialty with any payment received $5,742.15 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- Emerson Practice Associates, IncConcord, MA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Donny Li-Fan Chang among 522 endocrinology, diabetes & metabolism physician records in Massachusetts
Donny Li-Fan Chang, M.D., PH.D. is one of 522 endocrinology, diabetes & metabolism physician records with a practice address in Massachusetts. 82% 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 60% of them.
- NPI issued2008 · 60% of these records are older, 34% newer
- In a Medicare fileYes · 82% of these records are
- In the CMS Doctors and Clinicians fileYes · 72% of these records are
- Graduated2008 · median 2002 among the 378 with a school on file
- Record last updated2018 · 60% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RE0101X and a Massachusetts practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Endocrinology, Diabetes & Metabolism Physician providers in Massachusetts
There are 522 endocrinology, diabetes & metabolism physician records in Massachusetts.
All 522 in Massachusetts → Every provider in Leominster → Endocrinology, Diabetes & Metabolism Physician nationwide →
The 8 endocrinology, diabetes & metabolism physician records with the nearest ZIP codes
- David Erani, M.D.Sturbridge, MA 015661144326653
- Stephany Matta, M.DSturbridge, MA 015661518334515
- Madeleine Fay, MDWorcester, MA 016051164413860
- Margaret Ferry, MDGreenfield, MA 013011457454894
- Matthew Spitzer, MDGreenfield, MA 013011770743999
- Jerome Starr, M.D.Worcester, MA 016051619951910
- Catherine Waud, M.D.Worcester, MA 016051962486167
- Joseph Cohen, MDWorcester, MA 016061053334250
Common questions
What is Donny Li-Fan Chang, M.D., PH.D.'s NPI number?
Donny Li-Fan Chang, M.D., PH.D.'s National Provider Identifier (NPI) is 1114188265, issued on Jun 21, 2008. An NPI identifies a provider in billing; it is not a license.
Where is Donny Li-Fan Chang, M.D., PH.D. located?
The NPPES record lists a practice address at 225 New Lancaster Road, Leominster, MA, 01453. Phone: (508) 425-5880. Providers update this record themselves, so call before visiting.
How can I verify Donny Li-Fan Chang, M.D., PH.D.'s license?
NPPES lists Massachusetts license number 254814, 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 Donny Li-Fan Chang, M.D., PH.D. prescribe under Medicare Part D?
In 2024, Donny Li-Fan Chang, M.D., PH.D. had 1,854 Medicare Part D claims for 274 beneficiaries; the average among endocrinology, diabetes & metabolism physician prescribers was 2,630. 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.