Mary Elizabeth Patti, M.D.
Endocrinology, Diabetes & Metabolism Physician · Boston, MA
Mary Elizabeth Patti, M.D. is an endocrinology, diabetes & metabolism physician with a practice address in Boston, Massachusetts, and NPI 1386681070, issued on Jun 1, 2006. Check the license (Massachusetts 75892, as entered in NPPES) on the Massachusetts Board of Registration in Medicine; the Medicare figures below come from public CMS files.
- Name
- Mary Elizabeth Patti
- Credential
- M.D.
- Primary taxonomy
- Endocrinology, Diabetes & Metabolism Physician 207RE0101X
- License number
- 75892 MA
Self-reported in NPPES; status is on the state search - Practice location
- 1 Joslin Place, Boston, MA 02215
- Phone
- (617) 735-1966
- Enumerated
- Jun 1, 2006
- Record last updated
- Sep 7, 2007 (not updated in 19 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20110204000541); accepts Medicare assignment
- Medical or professional school
- Jefferson Medical College Of Thomas Jefferson University, 1985
- 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 1 Joslin Place
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Marion Mansfield, MDPediatric Endocrinology Physician1023054251
Verify Mary Elizabeth Patti in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMassachusetts Board of Registration in Medicine
Search for license 75892Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
70% fewer Medicare Part D claims than the average endocrinology, diabetes & metabolism physician in 2024
787 Medicare Part D claims for 109 beneficiaries, against an average of 2,630 among the 8,223 providers of this specialty who prescribed in Part D. Brand-name drugs were 46% of claims.
Most prescribed
- Ozempic81 claims
- Acarbose51 claims
- Diazoxide50 claims
- Gvoke Hypopen 2-Pack42 claims
- Trulicity40 claims
- Levothyroxine Sodium33 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 one group practice
- Joslin Clinic IncBoston, MA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Mary Elizabeth Patti among 522 endocrinology, diabetes & metabolism physician records in Massachusetts
Mary Elizabeth Patti, M.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 2006, is newer than 14% of them.
- NPI issued2006 · 14% of these records are older, 52% newer
- In a Medicare fileYes · 82% of these records are
- In the CMS Doctors and Clinicians fileYes · 72% of these records are
- Graduated1985 · median 2002 among the 378 with a school on file
- Record last updated2007 · 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 Boston → Endocrinology, Diabetes & Metabolism Physician nationwide →
The 8 endocrinology, diabetes & metabolism physician records with the nearest ZIP codes
- Richard Beaser, MDBoston, MA 022151447204540
- Ramachandiran Cooppan, M.D.Boston, MA 022151366499097
- Aaron Cypess, M.D., PH.D.Boston, MA 022151598730749
- Rachael Fawcett, M.D.Boston, MA 022151801879945
- Robert Gabbay, M.D.Boston, MA 022151720036627
- Jason Gaglia, M.D.Boston, MA 022151023098605
- Mark Herman, M.D.Boston, MA 022151043261795
- George King, M.D.Boston, MA 022151669458816
Common questions
What is Mary Elizabeth Patti, M.D.'s NPI number?
Mary Elizabeth Patti, M.D.'s National Provider Identifier (NPI) is 1386681070, issued on Jun 1, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Mary Elizabeth Patti, M.D. located?
The NPPES record lists a practice address at 1 Joslin Place, Boston, MA, 02215. Phone: (617) 735-1966. Providers update this record themselves, so call before visiting.
How can I verify Mary Elizabeth Patti, M.D.'s license?
NPPES lists Massachusetts license number 75892, 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 Elizabeth Patti, M.D. prescribe under Medicare Part D?
In 2024, Mary Elizabeth Patti, M.D. had 787 Medicare Part D claims for 109 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.