Natalie Semenyuk, M.D.
Obstetrics & Gynecology Physician · East Setauket, NY
Natalie Semenyuk, M.D. is an obstetrics & gynecology physician with a practice address in East Setauket, New York, and NPI 1841232642, issued on Jun 13, 2006. Check the license (New York 230610, as entered in NPPES) on the NYS Education Department, Office of the Professions; the Medicare figures below come from public CMS files.
- Name
- Natalie Semenyuk
- Credential
- M.D.
- Primary taxonomy
- Obstetrics & Gynecology Physician 207V00000X
- License number
- 230610 NY
Self-reported in NPPES; status is on the state search - Practice location
- 6 Technology Dr, East Setauket, NY 11733
- Phone
- (631) 444-4686
- Enumerated
- Jun 13, 2006
- Record last updated
- Jul 13, 2026
- Medicaid ID
- 02510272 NY
- Medicare enrollment
- Enrolled (PECOS I20040429001578); may accept Medicare assignment
- Entity
- Type 1 · individual
8 nearest obstetrics & gynecology physician records → All 3,174 in New York → Look up another NPI →
Also registered at 6 Technology Dr
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Kristen Alarcon, F.N,P.Family Nurse Practitioner1033365028
- Susan Altman, CNMAdvanced Practice Midwife1063448041
- Lauren Antonelli, PA-CPhysician Assistant1609201565
- Christina Arcieri, CNMAdvanced Practice Midwife1013380419
- Cecilia Avila, M.D.Maternal & Fetal Medicine Physician1053353888
- David Baker, M.D.Maternal & Fetal Medicine Physician1346276276
Verify Natalie Semenyuk in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersNYS Education Department, Office of the Professions
Search for license 230610Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
21% more Medicare Part D claims than the average obstetrics & gynecology physician in 2024
200 Medicare Part D claims for 44 beneficiaries, against an average of 165 among the 28,733 providers of this specialty who prescribed in Part D. Brand-name drugs were 12% of claims.
Most prescribed
- Norethindrone Acetate71 claims
- Fluconazole27 claims
- Sertraline Hcl24 claims
- Apri14 claims
- Estradiol13 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): 100 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).
One hospital affiliation
- Montefiore Medical CenterBronx, NY · Acute Care Hospitals3 of 5 stars
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through); hospitals matched to CMS Hospital General Information (Care Compare) (data.cms.gov). Star ratings are CMS hospital ratings, not ratings of this provider.
Natalie Semenyuk among 3,174 obstetrics & gynecology physician records in New York
Natalie Semenyuk, M.D. is one of 3,174 obstetrics & gynecology physician records with a practice address in New York. 76% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 9% of them.
- NPI issued2006 · 9% of these records are older, 49% newer
- In a Medicare fileYes · 76% of these records are
- In the CMS Doctors and Clinicians fileYes · 59% of these records are
- Graduated1988 · median 2002 among the 1,870 with a school on file
- Record last updated2026 · 63% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207V00000X and a New York practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
17 obstetrics & gynecology physician records list a practice address in East Setauket
They are 17 of the 972 NPPES records with a practice address in East Setauket, and 3,174 obstetrics & gynecology physician records in New York.
All 3,174 in New York → Every provider in East Setauket → Obstetrics & Gynecology Physician nationwide →
The 8 obstetrics & gynecology physician records with the nearest ZIP codes
- Christine Conway, M.D.East Setauket, NY 117331689601445
- Deborah Davenport, M.D.East Setauket, NY 117331679659346
- Susan Fish, N.P.Setauket, NY 117331649480047
- Elizabeth Garduno, M.D.East Setauket, NY 117331306017173
- Todd Griffin, M.D.East Setauket, NY 117331013943919
- Megan Lochner, M.D.Setauket, NY 117331235337478
- Robert O'Keefe, M.D.Setauket, NY 117331710108527
- Jeffrey Porte, M.D.Setauket, NY 117331659591808
Common questions
What is Natalie Semenyuk, M.D.'s NPI number?
Natalie Semenyuk, M.D.'s National Provider Identifier (NPI) is 1841232642, issued on Jun 13, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Natalie Semenyuk, M.D. located?
The NPPES record lists a practice address at 6 Technology Dr, East Setauket, NY, 11733. Phone: (631) 444-4686. Providers update this record themselves, so call before visiting.
How can I verify Natalie Semenyuk, M.D.'s license?
NPPES lists New York license number 230610, as entered by the provider. Search the NYS Education Department, Office of the Professions at https://www.op.nysed.gov/services/verifications/online-verification-searches. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Natalie Semenyuk, M.D. prescribe under Medicare Part D?
In 2024, Natalie Semenyuk, M.D. had 200 Medicare Part D claims for 44 beneficiaries; the average among obstetrics & gynecology physician prescribers was 165. Part D covers Medicare prescriptions only.
What is Natalie Semenyuk, M.D.'s MIPS final score?
The 2023 MIPS final score is 100 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.