KELLY M TREDER MD
NPI 1235558727
Obstetrics & Gynecology in Boston, MA

Active since April 10, 2014PECOS EnrolledAccepts Medicare Assignment
850 HARRISON AVE # YACC5, BOSTON, MA 02118(617) 414-2000(617) 414-5798 Get Directions Write a Review

NPPES record last updated: December 11, 2023. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: Dec 11, 2023, Aug 25, 2020 (2 updates tracked since 2020).

About Kelly M Treder Md NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

KELLY M TREDER MD (NPI 1235558727) is an individual obstetrics & gynecology provider in Boston, Massachusetts, licensed in Massachusetts (274105) and active in the NPI registry since April 2014. She is enrolled in Medicare PECOS, is affiliated with Boston Medical Center, and maintains a secondary practice location in Dorchester.

NPPES Registry Identity

NPI1235558727
Entity TypeIndividualFemale
Primary Taxonomy207V00000X
Provider Legal NameKELLY M TREDERCredential: MD
Location Address850 HARRISON AVE # YACC5Boston, MA 02118
Mailing Address637 Washington StDorchester, MA 02124-3510 · (617) 825-9660 · Fax (617) 288-7898
Fax(617) 414-5798
Sole ProprietorNo
Medical School CMSUniversity Of Washington School Of MedicineGraduated 2014
Enumeration DateApril 10, 2014
Last NPPES UpdateDecember 11, 20232 updates tracked since enumeration
NPPES CertifiedDecember 11, 2023
✔ NPI 1235558727 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyObstetrics & GynecologyAllopathic & Osteopathic Physicians
Taxonomy Code207V00000X
License✔ Licensed in MA · 274105
Definition
An obstetrician/gynecologist possesses special knowledge, skills and professional capability in the medical and surgical care of the female reproductive system and associated disorders. This physician serves as a consultant to other physicians and as a primary physician for women.
850 HARRISON AVE # YACC5, Boston, MA 02118

Secondary Practice Location 1

Location 1637 Washington StDorchester, MA 02124-3510 · Phone (617) 825-9660 · Fax (617) 288-7898

Other Identifiers 1

Medicaid110134663AMA

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

Kelly M Treder Md 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.

PECOS PAC ID7719277565
PECOS Enrollment IDI20180628002053
Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Medicare Billing Reassignments

2

Medicare enrollment records show Kelly Treder reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Obstetrics & Gynecology
1 BOSTON MEDICAL CTR PL
Boston, MA 02118
  • Reassigned Medicare billing, Massachusetts enrollment
  • 158 clinicians in this Medicare group
Community Health
637 WASHINGTON ST
Dorchester Center, MA 02124
  • Reassigned Medicare billing, Massachusetts enrollment
  • 91 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.

Hospital Affiliations CMS Care Compare

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

Boston Medical Center

Acute Care Hospitals · Boston, MA
3/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number220031
Location1 Boston Medical Center PlaceBoston, MA 02118 · Suffolk County
Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 02118 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$144.11 typical visit price
range $63.72 – $189.86
Typical copayment $36.02 (range $15.93 – $47.46)
Most-billed visit code 99204
Established Patient
$78.84 typical visit price
range $21.07 – $155.29
Typical copayment $19.71 (range $5.26 – $38.82)
Most-billed visit code 99213
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Other Providers at the Same Location NPPES 13

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

Advanced Practice Midwife
850 HARRISON AVE # YACC5
BOSTON, MA 02118
Nurse Practitioner (Women's Health)
850 HARRISON AVE # YACC5
BOSTON, MA 02118
Obstetrics & Gynecology
850 HARRISON AVE # YACC5
BOSTON, MA 02118
Advanced Practice Midwife
850 HARRISON AVE # YACC5
BOSTON, MA 02118
Family Medicine
850 HARRISON AVE # YACC5
BOSTON, MA 02118
Obstetrics & Gynecology
850 HARRISON AVE # YACC5
BOSTON, MA 02118
Obstetrics & Gynecology
850 HARRISON AVE # YACC5
BOSTON, MA 02118
Advanced Practice Midwife
850 HARRISON AVE # YACC5
BOSTON, MA 02118

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 Kelly Treder's NPI number?

The NPI number for Kelly Treder is 1235558727. It was assigned to this individual provider in the NPPES registry on April 10, 2014.

Where is Kelly Treder located?

Kelly Treder practices at 850 Harrison Ave # Yacc5, Boston, MA 02118. The listed phone number is (617) 414-2000.

What is Kelly Treder's specialty?

The primary specialty registered for this NPI is Obstetrics & Gynecology with taxonomy code 207V00000X.

Is Kelly Treder enrolled in Medicare?

Yes. Kelly Treder 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 Kelly Treder's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Kelly Treder reassigns Medicare benefits to 2 organizations: Boston University Obstetrics And Gynecology Foundation, Inc. (Boston, MA) and Codman Square Health Center Inc (Dorchester Center, MA). 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 Kelly Treder's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Kelly Treder accept?

Health plans from Taro Health and WellSense Health Plan list Kelly Treder 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.

Is Kelly Treder affiliated with any hospitals?

According to CMS data, Kelly Treder is affiliated with Boston Medical Center.

When was this NPI record last updated?

The NPPES record for Kelly Treder was last updated on December 11, 2023. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 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.