KATHERINE A GERGEN BARNETT MD
NPI 1023209129
Family Medicine in Boston, MA
About Katherine A Gergen Barnett Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
KATHERINE A GERGEN BARNETT MD (NPI 1023209129) is an individual family medicine provider in Boston, Massachusetts, licensed in Massachusetts (233674) and active in the NPI registry since August 2007. She is enrolled in Medicare PECOS, is affiliated with Boston Medical Center, and maintains 2 additional practice locations.
NPPES Registry Identity
Specialties & Licenses
Secondary Practice Locations 2
Other Identifiers 1
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
Katherine A Gergen Barnett 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.
Medicare Billing Reassignments
4Medicare enrollment records show Katherine Gergen Barnett reassigns Medicare billing to 4 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Boston, MA 02118
- Reassigned Medicare billing, Massachusetts enrollment
- 716 clinicians in this Medicare group
Boston, MA 02118
- Reassigned Medicare billing, Massachusetts enrollment
- 113 clinicians in this Medicare group
South Boston, MA 02127
- Reassigned Medicare billing, Massachusetts enrollment
- 136 clinicians in this Medicare group
Dorchester, MA 02122
- Reassigned Medicare billing, Massachusetts enrollment
- 41 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 3
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.
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, MAPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 02119 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Referred Medical Equipment & Supplies CMS DME claims
Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.
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.
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 Katherine Gergen Barnett's NPI number?
The NPI number for Katherine Gergen Barnett is 1023209129. It was assigned to this individual provider in the NPPES registry on August 5, 2007.
Where is Katherine Gergen Barnett located?
Katherine Gergen Barnett practices at 11 Melnea Cass Blvd, Boston, MA 02119. The listed phone number is (617) 414-2080.
What is Katherine Gergen Barnett's specialty?
The primary specialty registered for this NPI is Family Medicine with taxonomy code 207Q00000X.
Is Katherine Gergen Barnett enrolled in Medicare?
Yes. Katherine Gergen Barnett 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 Katherine Gergen Barnett's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Katherine Gergen Barnett reassigns Medicare benefits to 4 organizations: Bmc Affiliated Physicians, Inc. (Boston, MA), Boston University Family Medicine, Inc. (Boston, MA), South Boston Community Health Center (South Boston, MA) and Boston Medical Center Corporation (Dorchester, 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 Katherine Gergen Barnett's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Katherine Gergen Barnett accept?
Health plans from Anthem Blue Cross and Blue Shield and Taro Health list Katherine Gergen Barnett 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 Katherine Gergen Barnett affiliated with any hospitals?
According to CMS data, Katherine Gergen Barnett is affiliated with Boston Medical Center.
When was this NPI record last updated?
The NPPES record for Katherine Gergen Barnett was last updated on September 18, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 13 months 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.
# Katherine A Gergen Barnett, MD · NPI 1023209129
Family Medicine physician in Boston, Massachusetts. Individual provider, active in the CMS NPPES registry since August 5, 2007.
## Identity
- **NPI:** 1023209129 (Entity type: Individual)
- **Enumerated:** August 5, 2007
- **Primary specialty:** Family Medicine · taxonomy 207Q00000X
- **State license:** 233674 (Massachusetts)
- **Sole proprietor:** No
## Practice location
- **Address:** 11 MELNEA CASS BLVD, Boston, MA 02119-4401
- **Phone:** (617) 414-2080
## 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:** 4 organizations under Medicare reassignment (form CMS-855R): Bmc Affiliated Physicians, Inc. (NPI 1245320910, Boston, MA); Boston University Family Medicine, Inc. (NPI 1134166390, Boston, MA); South Boston Community Health Center (NPI 1669447413, South Boston, MA); Boston Medical Center Corporation (NPI 1780874677, Dorchester, MA) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Yale University School Of Medicine, class of 2005
## Record status
- **NPPES last updated:** September 18, 2025
- **Other identifiers:** Medicaid 110080981A (MA)
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Source: [NPI Profile](https://npiprofile.com/npi/1023209129) · Data from the CMS NPPES public registry.