MARGARET WHITE-GUTHRO N.P.
NPI 1497751200
Nurse Practitioner in Newburyport, MA
About Margaret White-guthro N.p. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MARGARET WHITE-GUTHRO N.P. (NPI 1497751200) is an individual nurse practitioner in Newburyport, Massachusetts, licensed in Massachusetts (172820) and active in the NPI registry since June 2005. She is enrolled in Medicare PECOS.
NPPES Registry Identity
Specialties & Licenses
Other Identifiers 3
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)
Margaret White-guthro N.p. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignments
4Medicare enrollment records show Margaret White-guthro reassigns Medicare billing to 4 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Newburyport, MA 01950
- Reassigned Medicare billing, Massachusetts enrollment
- 90 clinicians in this Medicare group
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.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 01950 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
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 Margaret White-guthro's NPI number?
The NPI number for Margaret White-guthro is 1497751200. It was assigned to this individual provider in the NPPES registry on June 27, 2005.
Where is Margaret White-guthro located?
Margaret White-guthro practices at 19A Congress St, Newburyport, MA 01950. The listed phone number is (978) 462-8774.
What is Margaret White-guthro's specialty?
The primary specialty registered for this NPI is Nurse Practitioner with taxonomy code 363L00000X.
Is Margaret White-guthro enrolled in Medicare?
Yes. Margaret White-guthro is registered in the Medicare PECOS enrollment system.
Which organizations bill Medicare for Margaret White-guthro's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Margaret White-guthro reassigns Medicare benefits to 4 organizations: Seacoast Affiliated Group Practice, Inc. (Newburyport, MA), 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 Margaret White-guthro's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Margaret White-guthro accept?
Health plans from Taro Health list Margaret White-guthro 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 Margaret White-guthro was last updated on August 11, 2008. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 18 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.
# Margaret White-Guthro, N.P. · NPI 1497751200
Nurse Practitioner physician in Newburyport, Massachusetts. Individual provider, active in the CMS NPPES registry since June 27, 2005.
## Identity
- **NPI:** 1497751200 (Entity type: Individual)
- **Enumerated:** June 27, 2005
- **Primary specialty:** Nurse Practitioner · taxonomy 363L00000X
- **State license:** 172820 (Massachusetts)
- **Sole proprietor:** No
## Practice location
- **Address:** 19A CONGRESS ST, Newburyport, MA 01950-2344
- **Phone:** (978) 462-8774
## 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:** 4 organizations under Medicare reassignment (form CMS-855R): Seacoast Affiliated Group Practice, Inc. (NPI 1801892344, Newburyport, MA); 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:** August 11, 2008
- **Other identifiers:** Medicare UPIN Q07941 (MA); Other NP4429 (MA); Medicare ID-Type Unspecified NP4429 (MA)
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Source: [NPI Profile](https://npiprofile.com/npi/1497751200) · Data from the CMS NPPES public registry.