JOSEPH TRETTEL JR. MD PHD
NPI 1750542502
Psychiatry & Neurology - Psychiatry in Boston, MA
About Joseph Trettel Jr. Md Phd NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
JOSEPH TRETTEL JR. MD PHD (NPI 1750542502) is an individual psychiatry provider in Boston, Massachusetts, licensed in Connecticut (050160) and active in the NPI registry since June 2008. He is enrolled in Medicare PECOS and is a graduate of University Of Connecticut School Of Medicine (2008).
NPPES Registry Identity
Specialties & Licenses
Accepted Insurance
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare and accepts Medicare assignment
Joseph Trettel Jr. Md Phd is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.
Medicare Billing Reassignments
3Medicare enrollment records show Joseph Trettel reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Hartford, CT 06102
- Reassigned Medicare billing, Connecticut enrollment
- 1,333 clinicians in this Medicare group
Hartford, CT 06106
- Reassigned Medicare billing, Connecticut enrollment
- 1,921 clinicians in this Medicare group
Wethersfield, CT 06109
- Reassigned Medicare billing, Connecticut enrollment
- 747 clinicians in this Medicare group
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Areas of Expertise CMS Part B claims
Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 02115 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Medicare Quality Performance CMS QPP · MIPS
Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.
Other Providers at the Same Location NPPES 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
BOSTON, MA 02115
BOSTON, MA 02115
BOSTON, MA 02115
Frequently Asked Questions NPPES & CMS
Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.
What is Joseph Trettel's NPI number?
The NPI number for Joseph Trettel is 1750542502. It was assigned to this individual provider in the NPPES registry on June 24, 2008.
Where is Joseph Trettel located?
Joseph Trettel practices at 221 Longwood Ave, Boston, MA 02115. The listed phone number is (617) 732-6753.
What is Joseph Trettel's specialty?
The primary specialty registered for this NPI is Psychiatry & Neurology, specializing in Psychiatry, with taxonomy code 2084P0800X.
Is Joseph Trettel enrolled in Medicare?
Yes. Joseph Trettel is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.
Which organizations bill Medicare for Joseph Trettel's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Joseph Trettel reassigns Medicare benefits to 3 organizations: Hartford Hospital (Hartford, CT), Hartford Healthcare Medical Group Specialists, PLLC (Hartford, CT) and Hartford Healthcare Medical Group, Inc (Wethersfield, CT). Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Joseph Trettel's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Joseph Trettel accept?
Health plans from Anthem Blue Cross and Blue Shield list Joseph Trettel as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.
When was this NPI record last updated?
The NPPES record for Joseph Trettel was last updated on August 9, 2013. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 13 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.
# Joseph Trettel Jr., MD PHD · NPI 1750542502
Psychiatry physician in Boston, Massachusetts. Individual provider, active in the CMS NPPES registry since June 24, 2008.
## Identity
- **NPI:** 1750542502 (Entity type: Individual)
- **Enumerated:** June 24, 2008
- **Primary specialty:** Psychiatry & Neurology - Psychiatry · taxonomy 2084P0800X
- **State license:** 050160 (Connecticut)
- **Sole proprietor:** No
## Practice location
- **Address:** 221 LONGWOOD AVE, Boston, MA 02115-5804
- **Phone:** (617) 732-6753
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** 3 organizations under Medicare reassignment (form CMS-855R): Hartford Hospital (NPI 1770696643, Hartford, CT); Hartford Healthcare Medical Group Specialists, PLLC (NPI 1023584216, Hartford, CT); Hartford Healthcare Medical Group, Inc (NPI 1043561301, Wethersfield, CT) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** University Of Connecticut School Of Medicine, class of 2008
## Record status
- **NPPES last updated:** August 9, 2013
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Source: [NPI Profile](https://npiprofile.com/npi/1750542502) · Data from the CMS NPPES public registry.