Giulia Sara Louissaint, MD
Surgery Physician · Newburyport, MA
Giulia Sara Louissaint, MD is a surgery physician with a practice address in Newburyport, Massachusetts, and NPI 1164983847, issued on Mar 26, 2019. Check the license (Massachusetts 1019630, as entered in NPPES) on the Massachusetts Board of Registration in Medicine; the Medicare figures below come from public CMS files.
- Name
- Giulia Sara Louissaint
- Credential
- MD
- Primary taxonomy
- Surgery Physician 208600000X
- License number
- 1019630 MA
Self-reported in NPPES; status is on the state search - Practice location
- 21 Highland Ave Ste 3, Newburyport, MA 01950
- Phone
- (978) 572-1149
- Enumerated
- Mar 26, 2019
- Record last updated
- Dec 2, 2025
- Medicare enrollment
- Enrolled (PECOS I20240709003615); accepts Medicare assignment
- Medical or professional school
- Tufts University School Of Medicine, 2019
- Entity
- Type 1 · individual
8 nearest surgery physician records → All 1,003 in Massachusetts → Look up another NPI →
Also registered at 21 Highland Ave Ste 3
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Brynn Carley, PA-CPhysician Assistant1285472910
- Brett Matthews, D.O.Surgery Physician1710298195
- Jeffrey Thurlow, MDSurgery Physician1760480693
- Kyla Thurlow, PA-CPhysician Assistant1205327640
Verify Giulia Sara Louissaint in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMassachusetts Board of Registration in Medicine
Search for license 1019630Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
88% fewer Medicare Part D claims than the average surgery physician in 2024
17 Medicare Part D claims for 17 beneficiaries, against an average of 147 among the 20,115 providers of this specialty who prescribed in Part D. 16 claims were for opioids.
Most prescribed
- Oxycodone Hcl14 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.
Bills Medicare through 2 group practices
- Baystate Medical Practices IncSpringfield, MA
- Seacoast Affiliated Group Practice IncNewburyport, MA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Giulia Sara Louissaint among 1,003 surgery physician records in Massachusetts
Giulia Sara Louissaint, MD is one of 1,003 surgery physician records with a practice address in Massachusetts. 66% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2019, is newer than 82% of them.
- NPI issued2019 · 82% of these records are older, 15% newer
- In a Medicare fileYes · 66% of these records are
- In the CMS Doctors and Clinicians fileYes · 50% of these records are
- Graduated2019 · median 2003 among the 503 with a school on file
- Record last updated2025 · 60% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 208600000X and a Massachusetts practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
7 surgery physician records list a practice address in Newburyport
They are 7 of the 558 NPPES records with a practice address in Newburyport, and 1,003 surgery physician records in Massachusetts.
All 1,003 in Massachusetts → Every provider in Newburyport → Surgery Physician nationwide →
The 8 surgery physician records with the nearest ZIP codes
- Jeffrey Bentley, M.D.Newburyport, MA 019501336188135
- Ryan Hall, MDNewburyport, MA 019501639732605
- Peter Hartmann, M.D.Newburyport, MA 019501518006360
- Brett Matthews, D.O.Newburyport, MA 019501710298195
- David Swierzewski, MDNewburyport, MA 019501508862046
- Jeffrey Thurlow, MDNewburyport, MA 019501760480693
- William Moore, MDPeabody, MA 019601548374416
- Heather Parry, PAPeabody, MA 019601629298658
Common questions
What is Giulia Sara Louissaint, MD's NPI number?
Giulia Sara Louissaint, MD's National Provider Identifier (NPI) is 1164983847, issued on Mar 26, 2019. An NPI identifies a provider in billing; it is not a license.
Where is Giulia Sara Louissaint, MD located?
The NPPES record lists a practice address at 21 Highland Ave Ste 3, Newburyport, MA, 01950. Phone: (978) 572-1149. Providers update this record themselves, so call before visiting.
How can I verify Giulia Sara Louissaint, MD's license?
NPPES lists Massachusetts license number 1019630, 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 Giulia Sara Louissaint, MD prescribe under Medicare Part D?
In 2024, Giulia Sara Louissaint, MD had 17 Medicare Part D claims for 17 beneficiaries; the average among surgery physician prescribers was 147. Part D covers Medicare prescriptions only.
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.