MRS. CYNTHIA CARROLL MACLACHLAN MSN, WHNP
NPI 1265432728
Nurse Practitioner - Obstetrics & Gynecology in Weymouth, MA
About Mrs. Cynthia Carroll Maclachlan Msn, Whnp NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MRS. CYNTHIA CARROLL MACLACHLAN MSN, WHNP (NPI 1265432728) is an individual obstetrics & gynecology provider in Weymouth, Massachusetts, licensed in Massachusetts (233849) and active in the NPI registry since July 2005. She is enrolled in Medicare PECOS, is affiliated with South Shore Hospital, and is a graduate of Other (2000).
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 and accepts Medicare assignment
Mrs. Cynthia Carroll Maclachlan Msn, Whnp 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 Reassignment
Medicare enrollment records show Cynthia Maclachlan reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Norwell, MA 02061
- Reassigned Medicare billing, Massachusetts enrollment
- 346 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.
Hospital Affiliations CMS Care Compare
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
South Shore Hospital
Acute Care Hospitals · South Weymouth, MAPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 02189 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Medicare Quality Performance CMS QPP · MIPS
Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.
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.
WEYMOUTH, MA 02189
WEYMOUTH, MA 02189
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 Maclachlan's NPI number?
The NPI number for Cynthia Maclachlan is 1265432728. It was assigned to this individual provider in the NPPES registry on July 27, 2005.
Where is Cynthia Maclachlan located?
Cynthia Maclachlan practices at 51 Performance Dr, Weymouth, MA 02189. The listed phone number is (781) 682-8000.
What is Cynthia Maclachlan's specialty?
The primary specialty registered for this NPI is Nurse Practitioner, specializing in Obstetrics & Gynecology, with taxonomy code 363LX0001X.
Is Cynthia Maclachlan enrolled in Medicare?
Yes. Cynthia Maclachlan 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 organization bills Medicare for Cynthia Maclachlan's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Cynthia Maclachlan reassigns Medicare benefits to South Shore Medical Center, Inc. (Norwell, 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 Maclachlan's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Cynthia Maclachlan accept?
Health plans from Anthem Blue Cross and Blue Shield and Taro Health list Cynthia Maclachlan 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 Cynthia Maclachlan affiliated with any hospitals?
According to CMS data, Cynthia Maclachlan is affiliated with South Shore Hospital.
When was this NPI record last updated?
The NPPES record for Cynthia Maclachlan was last updated on March 6, 2023. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 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.
# Mrs. Cynthia Carroll Maclachlan, MSN, WHNP · NPI 1265432728
Obstetrics & Gynecology physician in Weymouth, Massachusetts. Individual provider, active in the CMS NPPES registry since July 27, 2005.
## Identity
- **NPI:** 1265432728 (Entity type: Individual)
- **Enumerated:** July 27, 2005
- **Primary specialty:** Nurse Practitioner - Obstetrics & Gynecology · taxonomy 363LX0001X
- **State license:** 233849 (Massachusetts)
- **Sole proprietor:** No
## Practice location
- **Address:** 51 PERFORMANCE DR, Weymouth, MA 02189-3141
- **Phone:** (781) 682-8000
## 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:** South Shore Medical Center, Inc. (NPI 1669411856, Norwell, MA), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2000
## Record status
- **NPPES last updated:** March 6, 2023
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Source: [NPI Profile](https://npiprofile.com/npi/1265432728) · Data from the CMS NPPES public registry.