KATHRYN STIFF NP
NPI 1134490188
Nurse Practitioner - Family in Boston, MA
About Kathryn Stiff Np NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
KATHRYN STIFF NP (NPI 1134490188) is an individual family provider in Boston, Massachusetts, licensed in Massachusetts (RN2336622) and active in the NPI registry since January 2012. She is enrolled in Medicare PECOS.
NPPES Registry Identity
Specialties & Licenses
Other Names 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 (PECOS)
Kathryn Stiff Np is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignments
3Medicare enrollment records show Kathryn Stiff reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Boston, MA 02114
- Reassigned Medicare billing, Massachusetts enrollment
- 6,360 clinicians in this Medicare group
Boston, MA 02114
- Reassigned Medicare billing, Massachusetts enrollment
- 6,234 clinicians in this Medicare group
Boston, MA 02115
- Reassigned Medicare billing, Massachusetts enrollment
- 4,574 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.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 02114 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.
BOSTON, MA 02114
BOSTON, MA 02114
BOSTON, MA 02114
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 Stiff's NPI number?
The NPI number for Kathryn Stiff is 1134490188. It was assigned to this individual provider in the NPPES registry on January 23, 2012. The provider is also known as Kathryn Holland Arnp.
Where is Kathryn Stiff located?
Kathryn Stiff practices at 55 Fruit St, Boston, MA 02114. The listed phone number is (617) 726-2000.
What is Kathryn Stiff's specialty?
The primary specialty registered for this NPI is Nurse Practitioner, specializing in Family, with taxonomy code 363LF0000X.
Is Kathryn Stiff enrolled in Medicare?
Yes. Kathryn Stiff is registered in the Medicare PECOS enrollment system.
Which organizations bill Medicare for Kathryn Stiff's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Kathryn Stiff reassigns Medicare benefits to 3 organizations: Massachusetts General Physicians Organization Inc (Boston, MA), The General Hospital Corporation (Boston, MA) and Brigham & Womens 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 Stiff's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Kathryn Stiff accept?
Health plans from Providence Health Plan and Taro Health list Kathryn Stiff 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 Stiff was last updated on May 6, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 18 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.
# Kathryn Stiff, NP · NPI 1134490188
Family physician in Boston, Massachusetts. Individual provider, active in the CMS NPPES registry since January 23, 2012.
## Identity
- **NPI:** 1134490188 (Entity type: Individual)
- **Enumerated:** January 23, 2012
- **Primary specialty:** Nurse Practitioner - Family · taxonomy 363LF0000X
- **State license:** RN2336622 (Massachusetts)
- **Sole proprietor:** Yes
## Practice location
- **Address:** 55 FRUIT ST, Boston, MA 02114-2621
- **Phone:** (617) 726-2000
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **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): Massachusetts General Physicians Organization Inc (NPI 1801874573, Boston, MA); The General Hospital Corporation (NPI 1023049236, Boston, MA); Brigham & Womens Physicians Organization Inc (NPI 1033535497, Boston, MA) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** May 6, 2025
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Source: [NPI Profile](https://npiprofile.com/npi/1134490188) · Data from the CMS NPPES public registry.