CYNTHIA JEAN FIELD FNP-C
NPI 1003500315
Nurse Practitioner - Family in Boston, MA
About Cynthia Jean Field Fnp-c NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
CYNTHIA JEAN FIELD FNP-C (NPI 1003500315) is an individual family provider in Boston, Massachusetts, licensed in Massachusetts (RN2312017) and active in the NPI registry since June 2023. She is enrolled in Medicare PECOS.
NPPES Registry Identity
Specialties & Licenses
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)
Cynthia Jean Field Fnp-c is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignment
Medicare enrollment records show Cynthia Field reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Boston, MA 02115
- Reassigned Medicare billing, Massachusetts enrollment
- 1,358 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 02115 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 02115
BOSTON, MA 02115
BOSTON, MA 02115
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 Cynthia Field's NPI number?
The NPI number for Cynthia Field is 1003500315. It was assigned to this individual provider in the NPPES registry on June 8, 2023.
Where is Cynthia Field located?
Cynthia Field practices at 300 Longwood Ave, Boston, MA 02115. The listed phone number is (617) 355-6129.
What is Cynthia Field's specialty?
The primary specialty registered for this NPI is Nurse Practitioner, specializing in Family, with taxonomy code 363LF0000X.
Is Cynthia Field enrolled in Medicare?
Yes. Cynthia Field is registered in the Medicare PECOS enrollment system.
Which organization bills Medicare for Cynthia Field's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Cynthia Field reassigns Medicare benefits to Children's Hospital Pediatric Associates, Inc (Boston, MA). The 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 Cynthia Field's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Cynthia Field accept?
Health plans from Anthem Blue Cross and Blue Shield and Taro Health list Cynthia Field 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 Cynthia Field was last updated on January 2, 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.
# Cynthia Jean Field, FNP-C · NPI 1003500315
Family physician in Boston, Massachusetts. Individual provider, active in the CMS NPPES registry since June 8, 2023.
## Identity
- **NPI:** 1003500315 (Entity type: Individual)
- **Enumerated:** June 8, 2023
- **Primary specialty:** Nurse Practitioner - Family · taxonomy 363LF0000X
- **State license:** RN2312017 (Massachusetts)
- **Sole proprietor:** No
## Practice location
- **Address:** 300 LONGWOOD AVE, Boston, MA 02115-5724
- **Phone:** (617) 355-6129
## 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:** Children's Hospital Pediatric Associates, Inc (NPI 1457306664, Boston, MA), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** January 2, 2024
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Source: [NPI Profile](https://npiprofile.com/npi/1003500315) · Data from the CMS NPPES public registry.