RUTH MADELINE MATEO FNP-BC
NPI 1851857338
Nurse Practitioner - Family in Boston, MA
About Ruth Madeline Mateo Fnp-bc NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
RUTH MADELINE MATEO FNP-BC (NPI 1851857338) is an individual family provider in Boston, Massachusetts, licensed in Massachusetts (RN232554) and active in the NPI registry since February 2019. She is enrolled in Medicare PECOS, is affiliated with North Shore Medical Center -, and is a graduate of Other (2018).
NPPES Registry Identity
Specialties & Licenses 2
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
Ruth Madeline Mateo Fnp-bc 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 Ruth Mateo reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Boston, MA 02215
- Reassigned Medicare billing, Massachusetts enrollment
- 1,477 clinicians in this Medicare group
Boston, MA 02215
- Reassigned Medicare billing, Massachusetts enrollment
- 2,579 clinicians in this Medicare group
Salem, MA 01970
- Reassigned Medicare billing, Massachusetts enrollment
- 994 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 10
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 2
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
North Shore Medical Center -
Acute Care Hospitals · Salem, MAMassachusetts General Hospital
Acute Care Hospitals · Boston, MAPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 02215 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.
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 Ruth Mateo's NPI number?
The NPI number for Ruth Mateo is 1851857338. It was assigned to this individual provider in the NPPES registry on February 20, 2019.
Where is Ruth Mateo located?
Ruth Mateo practices at 330 Brookline Ave # Shapiro6, Boston, MA 02215. The listed phone number is (617) 754-9600.
What is Ruth Mateo's specialty?
The primary specialty registered for this NPI is Nurse Practitioner, specializing in Family, with taxonomy code 363LF0000X.
Is Ruth Mateo enrolled in Medicare?
Yes. Ruth Mateo 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 Ruth Mateo's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Ruth Mateo reassigns Medicare benefits to 3 organizations: Beth Israel Deaconess Medical Center, Inc. (Boston, MA), Harvard Medical Faculty Phys At Beth Israel Deaconess Med Ctr Inc (Boston, MA) and Mass General Brigham Medical Group Northern Massachusetts Inc (Salem, 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 Ruth Mateo's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Ruth Mateo accept?
Health plans from Taro Health list Ruth Mateo 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 Ruth Mateo affiliated with any hospitals?
According to CMS data, Ruth Mateo is affiliated with North Shore Medical Center - and Massachusetts General Hospital.
When was this NPI record last updated?
The NPPES record for Ruth Mateo was last updated on March 24, 2020. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 6 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.
# Ruth Madeline Mateo, FNP-BC · NPI 1851857338
Family physician in Boston, Massachusetts. Individual provider, active in the CMS NPPES registry since February 20, 2019.
## Identity
- **NPI:** 1851857338 (Entity type: Individual)
- **Enumerated:** February 20, 2019
- **Primary specialty:** Nurse Practitioner - Family · taxonomy 363LF0000X
- **State license:** RN232554 (Massachusetts)
- **Sole proprietor:** Yes
## Practice location
- **Address:** 330 BROOKLINE AVE # SHAPIRO6, Boston, MA 02215-5400
- **Phone:** (617) 754-9600 · **Fax:** (617) 667-8665
## 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): Beth Israel Deaconess Medical Center, Inc. (NPI 1548202641, Boston, MA); Harvard Medical Faculty Phys At Beth Israel Deaconess Med Ctr Inc (NPI 1194765438, Boston, MA); Mass General Brigham Medical Group Northern Massachusetts Inc (NPI 1588606123, Salem, MA) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2018
## Record status
- **NPPES last updated:** March 24, 2020
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Source: [NPI Profile](https://npiprofile.com/npi/1851857338) · Data from the CMS NPPES public registry.