CHRISTINE ELIZABETH GUILLEN DNP
NPI 1497531636
Nurse Practitioner - Adult Health in Boston, MA
About Christine Elizabeth Guillen Dnp NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
CHRISTINE ELIZABETH GUILLEN DNP (NPI 1497531636) is an individual adult health provider in Boston, Massachusetts, licensed in Massachusetts (RN2303779) and active in the NPI registry since September 2023. She is enrolled in Medicare PECOS and maintains a secondary practice location in Winchester.
NPPES Registry Identity
Specialties & Licenses 2
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 (PECOS)
Christine Elizabeth Guillen Dnp is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignments
2Medicare enrollment records show Christine Guillen reassigns Medicare billing to 2 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
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
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 Christine Guillen's NPI number?
The NPI number for Christine Guillen is 1497531636. It was assigned to this individual provider in the NPPES registry on September 5, 2023.
Where is Christine Guillen located?
Christine Guillen practices at 55 Fruit St, Boston, MA 02114. The listed phone number is (617) 724-8636.
What is Christine Guillen's specialty?
The primary specialty registered for this NPI is Nurse Practitioner, specializing in Adult Health, with taxonomy code 363LA2200X.
Is Christine Guillen enrolled in Medicare?
Yes. Christine Guillen is registered in the Medicare PECOS enrollment system.
Which organizations bill Medicare for Christine Guillen's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Christine Guillen reassigns Medicare benefits to 2 organizations: Massachusetts General Physicians Organization Inc (Boston, MA) and The General Hospital Corporation (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 Christine Guillen's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Christine Guillen accept?
Health plans from Taro Health list Christine Guillen 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 Christine Guillen was last updated on June 4, 2024. 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.
# Christine Elizabeth Guillen, DNP · NPI 1497531636
Adult Health physician in Boston, Massachusetts. Individual provider, active in the CMS NPPES registry since September 5, 2023.
## Identity
- **NPI:** 1497531636 (Entity type: Individual)
- **Enumerated:** September 5, 2023
- **Primary specialty:** Nurse Practitioner - Adult Health · taxonomy 363LA2200X
- **State license:** RN2303779 (Massachusetts)
- **Sole proprietor:** Yes
## Practice location
- **Address:** 55 FRUIT ST, Boston, MA 02114-2621
- **Phone:** (617) 724-8636
## 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:** 2 organizations under Medicare reassignment (form CMS-855R): Massachusetts General Physicians Organization Inc (NPI 1801874573, Boston, MA); The General Hospital Corporation (NPI 1023049236, Boston, MA) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** June 4, 2024
---
Source: [NPI Profile](https://npiprofile.com/npi/1497531636) · Data from the CMS NPPES public registry.