Mary L. Delaney, MD
Endocrinology, Diabetes & Metabolism Physician · South Weymouth, MA
Mary L. Delaney, MD is an endocrinology, diabetes & metabolism physician with a practice address in South Weymouth, Massachusetts, and NPI 1336149228, issued on Jul 21, 2005. Check the license (Massachusetts 71454, as entered in NPPES) on the Massachusetts Board of Registration in Medicine; the Medicare figures below come from public CMS files.
- Name
- Mary L. Delaney
- Credential
- MD
- Primary taxonomy
- Endocrinology, Diabetes & Metabolism Physician 207RE0101X
- License number
- 71454 MA
Self-reported in NPPES; status is on the state search - Practice location
- 541 Main St, South Weymouth, MA 02190
- Phone
- (781) 952-1280
- Enumerated
- Jul 21, 2005
- Record last updated
- Mar 13, 2014 (not updated in 12 years: call before relying on the address or phone)
- Fax
- (781) 952-1570
- Medicaid ID
- 3094006 MA
- Medicare enrollment
- Enrolled (PECOS I20050419001391); accepts Medicare assignment
- Medical or professional school
- Boston University School Of Medicine, 1986
- 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 541 Main St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Dana AnstettMental Health Counselor1770857286
- Tara Armstrong, PA-CMedical Physician Assistant1811049414
- Richard Ashburn, MDPulmonary Disease Physician1861492746
- John Casey, D.C.Chiropractor1700805181
- Charles Chalko, D.O.Internal Medicine Physician1548218126
- Jeanne Colton, NPNurse Practitioner1992782072
Verify Mary L. Delaney in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMassachusetts Board of Registration in Medicine
Search for license 71454Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
2.9 times the Medicare Part D claims of the average endocrinology, diabetes & metabolism physician in 2024
7,527 Medicare Part D claims for 770 beneficiaries, against an average of 2,630 among the 8,223 providers of this specialty who prescribed in Part D. Brand-name drugs were 27% of claims. 98 claims were for opioids.
Most prescribed
- Levothyroxine Sodium1,045 claims
- Atorvastatin Calcium328 claims
- Ozempic248 claims
- Lisinopril195 claims
- Alendronate Sodium189 claims
- Synthroid189 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.
Bills Medicare through 2 group practices
- Harbor Medical Associates IncS Weymouth, MA
- Mass General Brigham Medical Group Suburban Massachusetts IncNewton, MA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Mary L. Delaney among 522 endocrinology, diabetes & metabolism physician records in Massachusetts
Mary L. Delaney, MD 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 2005, is newer than 0% of them.
- NPI issued2005 · 0% of these records are older, 86% newer
- In a Medicare fileYes · 82% of these records are
- In the CMS Doctors and Clinicians fileYes · 72% of these records are
- Graduated1986 · median 2002 among the 378 with a school on file
- Record last updated2014 · 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).
5 endocrinology, diabetes & metabolism physician records list a practice address in South Weymouth
They are 5 of the 445 NPPES records with a practice address in South Weymouth, and 522 endocrinology, diabetes & metabolism physician records in Massachusetts.
All 522 in Massachusetts → Every provider in South Weymouth → Endocrinology, Diabetes & Metabolism Physician nationwide →
The 8 endocrinology, diabetes & metabolism physician records with the nearest ZIP codes
- Kristin Helm, MDSouth Weymouth, MA 021901336357763
- Abby Landzberg, MDSouth Weymouth, MA 021901629055728
- Richard Mirel, M.D.Weymouth, MA 021901437150174
- Laura Selkirk, M.D.South Weymouth, MA 021901548478548
- Isabelle Zamfirescu, MDSouth Weymouth, MA 021901881802031
- Monika Konopka, MDMilton, MA 021861184691628
- Peter Roos, MDMilton, MA 021861619962255
- Rodrigo Valderrabano, M.D.Braintree, MA 021841184805186
Common questions
What is Mary L. Delaney, MD's NPI number?
Mary L. Delaney, MD's National Provider Identifier (NPI) is 1336149228, issued on Jul 21, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Mary L. Delaney, MD located?
The NPPES record lists a practice address at 541 Main St, South Weymouth, MA, 02190. Phone: (781) 952-1280. Providers update this record themselves, so call before visiting.
How can I verify Mary L. Delaney, MD's license?
NPPES lists Massachusetts license number 71454, 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 Mary L. Delaney, MD prescribe under Medicare Part D?
In 2024, Mary L. Delaney, MD had 7,527 Medicare Part D claims for 770 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.