Natalie Sinclair
Hematology & Oncology Physician · Milford, MA
Natalie Sinclair is a hematology & oncology physician with a practice address in Milford, Massachusetts, and NPI 1740315654, issued on Feb 22, 2007. Check the license (Massachusetts 254223, as entered in NPPES) on the Massachusetts Board of Registration in Medicine; the Medicare figures below come from public CMS files.
- Name
- Natalie Sinclair
- Primary taxonomy
- Hematology & Oncology Physician 207RH0003X
- License numbers
- 254223 MA
060-000-3432 VT
Self-reported in NPPES; status is on the state search - Practice location
- 20 Prospect St, Milford, MA 01757
- Phone
- (508) 488-3708
- Enumerated
- Feb 22, 2007
- Record last updated
- Sep 11, 2013 (not updated in 13 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20130821000310); accepts Medicare assignment
- Medical or professional school
- University Of Vermont College Of Medicine, 2005
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest hematology & oncology physician records → All 461 in Massachusetts → Look up another NPI →
Also registered at 20 Prospect St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Zahra Amiji, PA-CPhysician Assistant1477277135
- Stacey Coyle, P.A.Medical Physician Assistant1467477679
- Daniel Fein, M.D.Medical Oncology Physician1053791707
- Emily Joyal, PA-CMedical Physician Assistant1356779631
- Anita Koshy, MDInternal Medicine Physician1033572060
- Stephanie Macausland, M.DRadiation Oncology Physician1740245505
Verify Natalie Sinclair in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMassachusetts Board of Registration in Medicine
Search for license 254223Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
9% more Medicare Part D claims than the average hematology & oncology physician in 2024
952 Medicare Part D claims for 246 beneficiaries, against an average of 877 among the 10,784 providers of this specialty who prescribed in Part D. Brand-name drugs were 12% of claims. 41 claims were for opioids.
Most prescribed
- Letrozole268 claims
- Anastrozole95 claims
- Duloxetine Hcl34 claims
- Tamoxifen Citrate33 claims
- Exemestane32 claims
- Ondansetron Odt25 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
The practice group's MIPS final score for 2023 (Medicare payment program): 86.3 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Bills Medicare through one group practice
- Dana-Farber Cancer Institute, Inc.Milford, MA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Natalie Sinclair among 461 hematology & oncology physician records in Massachusetts
Natalie Sinclair is one of 461 hematology & oncology physician records with a practice address in Massachusetts. 75% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2007, is newer than 50% of them.
- NPI issued2007 · 50% of these records are older, 39% newer
- In a Medicare fileYes · 75% of these records are
- In the CMS Doctors and Clinicians fileYes · 66% of these records are
- Graduated2005 · median 2004 among the 303 with a school on file
- Record last updated2013 · 62% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RH0003X and a Massachusetts practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Hematology & Oncology Physician providers in Massachusetts
There are 461 hematology & oncology physician records in Massachusetts.
All 461 in Massachusetts → Every provider in Milford → Hematology & Oncology Physician nationwide →
The 8 hematology & oncology physician records with the nearest ZIP codes
- Mona Kaddis, M.D.Milford, MA 017571003853680
- Daniel Roberts, M.D.Milford, MA 017571710240171
- Humberto Rossi, M.D.Milford, MA 017571245213347
- Hande Tuncer, MDMilford, MA 017571265446603
- Susan Donohue, M.D.Marlborough, MA 017521063493302
- Eddy Chen, M.D.Concord, MA 017421730376898
- Jon Dubois, M.D.Concord, MA 017421922080241
- Ewa Niemierko, M.D.Concord, MA 017421447233549
Common questions
What is Natalie Sinclair's NPI number?
Natalie Sinclair's National Provider Identifier (NPI) is 1740315654, issued on Feb 22, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Natalie Sinclair located?
The NPPES record lists a practice address at 20 Prospect St, Milford, MA, 01757. Phone: (508) 488-3708. Providers update this record themselves, so call before visiting.
How can I verify Natalie Sinclair's license?
NPPES lists Massachusetts license number 254223, as entered by the provider. Search the Massachusetts Board of Registration in Medicine at https://findmydoctor.mass.gov/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Natalie Sinclair prescribe under Medicare Part D?
In 2024, Natalie Sinclair had 952 Medicare Part D claims for 246 beneficiaries; the average among hematology & oncology physician prescribers was 877. Part D covers Medicare prescriptions only.
What is Natalie Sinclair's MIPS final score?
The 2023 MIPS final score is 86.3 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.