Joseph Trettel, MD PHD
Psychiatry Physician · Boston, MA
Joseph Trettel, MD PHD is a psychiatry physician with a practice address in Boston, Massachusetts, and NPI 1750542502, issued on Jun 24, 2008. Check the license on the Massachusetts Board of Registration in Medicine; the Medicare figures below come from public CMS files.
- Name
- Joseph Trettel
- Credential
- MD PHD
- Primary taxonomy
- Psychiatry Physician 2084P0800X
- License number
- 050160 CT
Self-reported in NPPES; status is on the state search - Practice location
- 221 Longwood Ave, Boston, MA 02115
- Phone
- (617) 732-6753
- Enumerated
- Jun 24, 2008
- Record last updated
- Aug 9, 2013 (not updated in 13 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20111004000463); accepts Medicare assignment
- Medical or professional school
- University Of Connecticut School Of Medicine, 2008
- Entity
- Type 1 · individual
8 nearest psychiatry physician records → All 2,736 in Massachusetts → Look up another NPI →
Also registered at 221 Longwood Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Joseph Trettel in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMassachusetts Board of Registration in MedicineCheck the board
- 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
98% fewer Medicare Part D claims than the average psychiatry physician in 2024
17 Medicare Part D claims, against an average of 1,000 among the 35,054 providers of this specialty who prescribed in Part D. Brand-name drugs were 0% of claims.
Most prescribed
- Norethindron-Ethinyl Estradiol13 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 practice group's MIPS final score for 2023 (Medicare payment program): 86.4 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. 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, group reporting; category weights for 2023 (qpp.cms.gov).
One hospital affiliation
- Hartford HospitalHartford, CT · Acute Care Hospitals4 of 5 stars
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through); hospitals matched to CMS Hospital General Information (Care Compare) (data.cms.gov). Star ratings are CMS hospital ratings, not ratings of this provider.
Joseph Trettel among 2,736 psychiatry physician records in Massachusetts
Joseph Trettel, MD PHD is one of 2,736 psychiatry physician records with a practice address in Massachusetts. 65% 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 63% of them.
- NPI issued2008 · 63% of these records are older, 34% newer
- In a Medicare fileYes · 65% of these records are
- In the CMS Doctors and Clinicians fileYes · 45% of these records are
- Graduated2008 · median 2005 among the 1,219 with a school on file
- Record last updated2013 · 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 2084P0800X and a Massachusetts practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
845 psychiatry physician records list a practice address in Boston
They are 845 of the 41,865 NPPES records with a practice address in Boston, and 2,736 psychiatry physician records in Massachusetts.
All 2,736 in Massachusetts → Every provider in Boston → Psychiatry Physician nationwide →
The 8 psychiatry physician records with the nearest ZIP codes
- Jay Baer, MDBoston, MA 021151427014323
- Susan Block, MDBoston, MA 021151083681563
- Ilana Braun, M.D.Boston, MA 021151760443006
- Alison Fife, MDBoston, MA 021151477545143
- Melissa Frumin, MD MSBoston, MA 021151659337871
- David Gitlin, MDBoston, MA 021151720078967
- Randy Glassman, MDBoston, MA 021151316937543
- Christine Kim, MDBoston, MA 021151942266283
Common questions
What is Joseph Trettel, MD PHD's NPI number?
Joseph Trettel, MD PHD's National Provider Identifier (NPI) is 1750542502, issued on Jun 24, 2008. An NPI identifies a provider in billing; it is not a license.
Where is Joseph Trettel, MD PHD located?
The NPPES record lists a practice address at 221 Longwood Ave, Boston, MA, 02115. Phone: (617) 732-6753. Providers update this record themselves, so call before visiting.
How can I verify Joseph Trettel, MD PHD's license?
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 Joseph Trettel, MD PHD prescribe under Medicare Part D?
In 2024, Joseph Trettel, MD PHD had 17 Medicare Part D claims; the average among psychiatry physician prescribers was 1,000. Part D covers Medicare prescriptions only.
What is Joseph Trettel, MD PHD's MIPS final score?
The 2023 MIPS final score is 86.4 of 100, reported for the practice group. 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.