KATHRYN GANTMAN N.P.
NPI 1285984542
Nurse Practitioner in Boston, MA
About Kathryn Gantman N.p. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
KATHRYN GANTMAN N.P. (NPI 1285984542) is an individual nurse practitioner in Boston, Massachusetts, licensed in Massachusetts (RN2269737) and active in the NPI registry since September 2012. She is enrolled in Medicare PECOS, maintains a secondary practice location in Boston, and is a graduate of Other (2012).
NPPES Registry Identity
Specialties & Licenses
Secondary Practice Location 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
Kathryn Gantman N.p. 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 Kathryn Gantman reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Boston, MA 02109
- Reassigned Medicare billing, Massachusetts enrollment
- 1,317 clinicians in this Medicare group
Boston, MA 02114
- Reassigned Medicare billing, Massachusetts enrollment
- 6,234 clinicians in this Medicare group
Boston, MA 02114
- Reassigned Medicare billing, Massachusetts enrollment
- 6,360 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 12
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 02109 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
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 Kathryn Gantman's NPI number?
The NPI number for Kathryn Gantman is 1285984542. It was assigned to this individual provider in the NPPES registry on September 14, 2012.
Where is Kathryn Gantman located?
Kathryn Gantman practices at 147 Milk St, Boston, MA 02109. The listed phone number is (617) 654-7000.
What is Kathryn Gantman's specialty?
The primary specialty registered for this NPI is Nurse Practitioner with taxonomy code 363L00000X.
Is Kathryn Gantman enrolled in Medicare?
Yes. Kathryn Gantman 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 Kathryn Gantman's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Kathryn Gantman reassigns Medicare benefits to 3 organizations: Atrius Health, Inc. (Boston, MA), The General Hospital Corporation (Boston, MA) and Massachusetts General Physicians Organization Inc (Boston, 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 Kathryn Gantman's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Kathryn Gantman accept?
Health plans from Anthem Blue Cross and Blue Shield list Kathryn Gantman 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 Kathryn Gantman was last updated on December 14, 2018. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 7 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.
# Kathryn Gantman, N.P. · NPI 1285984542
Nurse Practitioner physician in Boston, Massachusetts. Individual provider, active in the CMS NPPES registry since September 14, 2012.
## Identity
- **NPI:** 1285984542 (Entity type: Individual)
- **Enumerated:** September 14, 2012
- **Primary specialty:** Nurse Practitioner · taxonomy 363L00000X
- **State license:** RN2269737 (Massachusetts)
- **Sole proprietor:** No
## Practice location
- **Address:** 147 MILK ST, Boston, MA 02109-4806
- **Phone:** (617) 654-7000
## 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): Atrius Health, Inc. (NPI 1265646921, Boston, MA); The General Hospital Corporation (NPI 1023049236, Boston, MA); Massachusetts General Physicians Organization Inc (NPI 1801874573, Boston, MA) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2012
## Record status
- **NPPES last updated:** December 14, 2018
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Source: [NPI Profile](https://npiprofile.com/npi/1285984542) · Data from the CMS NPPES public registry.