DR. NATALIE SINCLAIR
NPI 1740315654
Internal Medicine - Hematology & Oncology in Milford, MA
About Dr. Natalie Sinclair NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. NATALIE SINCLAIR (NPI 1740315654) is an individual hematology & oncology provider in Milford, Massachusetts, licensed in Massachusetts (254223) and active in the NPI registry since February 2007. She is enrolled in Medicare PECOS, is affiliated with Milford Regional Medical Center, and is a graduate of University Of Vermont College Of Medicine (2005).
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
Dr. Natalie Sinclair 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 Natalie Sinclair 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
- Also billed through NPI 1851333686 (Massachusetts)
- 531 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 4
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 4
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Milford Regional Medical Center
Acute Care Hospitals · Milford, MANewton-Wellesley Hospital
Acute Care Hospitals · Newton, MABrigham And Women's Hospital
Acute Care Hospitals · Boston, MAFaulkner Hospital-Brigham And Women's
Acute Care Hospitals · Boston, MAPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 01757 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.
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.
Other Providers at the Same Location NPPES 17
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
MILFORD, MA 01757
MILFORD, MA 01757
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 Natalie Sinclair's NPI number?
The NPI number for Natalie Sinclair is 1740315654. It was assigned to this individual provider in the NPPES registry on February 22, 2007.
Where is Natalie Sinclair located?
Natalie Sinclair practices at 20 Prospect St, Milford, MA 01757. The listed phone number is (508) 488-3708.
What is Natalie Sinclair's specialty?
The primary specialty registered for this NPI is Internal Medicine, specializing in Hematology & Oncology, with taxonomy code 207RH0003X.
Is Natalie Sinclair enrolled in Medicare?
Yes. Natalie Sinclair 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 Natalie Sinclair's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Natalie Sinclair reassigns Medicare benefits to Dana-Farber Cancer Institute, 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 Natalie Sinclair's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Natalie Sinclair accept?
Health plans from Taro Health list Natalie Sinclair 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 Natalie Sinclair affiliated with any hospitals?
According to CMS data, Natalie Sinclair is affiliated with Milford Regional Medical Center, Newton-Wellesley Hospital, Brigham And Women's Hospital and Faulkner Hospital-Brigham And Women's.
When was this NPI record last updated?
The NPPES record for Natalie Sinclair was last updated on September 11, 2013. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 13 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.
# Dr. Natalie Sinclair · NPI 1740315654
Hematology & Oncology physician in Milford, Massachusetts. Individual provider, active in the CMS NPPES registry since February 22, 2007.
## Identity
- **NPI:** 1740315654 (Entity type: Individual)
- **Enumerated:** February 22, 2007
- **Primary specialty:** Internal Medicine - Hematology & Oncology · taxonomy 207RH0003X
- **State license:** 254223 (Massachusetts)
- **Sole proprietor:** Yes
## Practice location
- **Address:** 20 PROSPECT ST, Milford, MA 01757-3026
- **Phone:** (508) 488-3708
## 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:** Dana-Farber Cancer Institute, Inc. (NPI 1346433257, Boston, MA), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** University Of Vermont College Of Medicine, class of 2005
## Record status
- **NPPES last updated:** September 11, 2013
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Source: [NPI Profile](https://npiprofile.com/npi/1740315654) · Data from the CMS NPPES public registry.