Jennifer Dale Marshak, MD
Obstetrics & Gynecology Physician · Port Jefferson, NY
Jennifer Dale Marshak, MD is an obstetrics & gynecology physician with a practice address in Port Jefferson, New York, and NPI 1750365912, issued on Dec 1, 2005. Check the license (New York 211465, as entered in NPPES) on the NYS Education Department, Office of the Professions; the Medicare figures below come from public CMS files.
- Name
- Jennifer Dale Marshak
- Credential
- MD
- Primary taxonomy
- Obstetrics & Gynecology Physician 207V00000X
- License number
- 211465 NY
Self-reported in NPPES; status is on the state search - Practice location
- 118 N Country RD, Port Jefferson, NY 11777
- Phone
- (631) 473-7171
- Enumerated
- Dec 1, 2005
- Record last updated
- Apr 24, 2008 (not updated in 18 years: call before relying on the address or phone)
- Fax
- (631) 473-4605
- Medicare enrollment
- Enrolled (PECOS I20060330000493); accepts Medicare assignment
- Medical or professional school
- Duke University School Of Medicine, 1996
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest obstetrics & gynecology physician records → All 3,174 in New York → Look up another NPI →
Also registered at 118 N Country RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Damiano Buffa, MDGynecology Physician1689658817
- Kim Decastro, CNP, CNMNurse Practitioner1700941382
- Lance Edwards, MDGynecology Physician1487638037
- Anthony Giammarino, MDGynecology Physician1427032010
- Sarah Karalitzky, D.OObstetrics & Gynecology Physician1629206156
- Dorothy Kozlowski, NPObstetrics & Gynecology Nurse Practitioner1184608473
Verify Jennifer Dale Marshak 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 211465Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
3.8 times the Medicare Part D claims of the average obstetrics & gynecology physician in 2024
622 Medicare Part D claims for 255 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
- Raloxifene Hcl100 claims
- Estradiol77 claims
- Clobetasol Propionate58 claims
- Clotrimazole-Betamethasone57 claims
- Risedronate Sodium52 claims
- Valacyclovir39 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): 99.2 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).
Industry payments in 2024: $483.17
14 payments; by number, the most common kind was food and beverage; the largest payer was Daiichi Sankyo Inc. The 21,429 providers of this specialty with any payment received $1,030.61 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- North Shore Hematology Oncology Associates PCPatchogue, NY
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Jennifer Dale Marshak among 3,174 obstetrics & gynecology physician records in New York
Jennifer Dale Marshak, MD 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 2005, is newer than 0% of them.
- NPI issued2005 · 0% of these records are older, 91% newer
- In a Medicare fileYes · 76% of these records are
- In the CMS Doctors and Clinicians fileYes · 59% of these records are
- Graduated1996 · median 2002 among the 1,870 with a school on file
- Record last updated2008 · 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).
Obstetrics & Gynecology Physician providers in New York
There are 3,174 obstetrics & gynecology physician records in New York.
All 3,174 in New York → Every provider in Port Jefferson → Obstetrics & Gynecology Physician nationwide →
The 8 obstetrics & gynecology physician records with the nearest ZIP codes
- Farzana Garcia, DOPort Jefferson Station, NY 117771891130902
- Sarah Karalitzky, D.OPort Jefferson, NY 117771629206156
- Douglas Lee, MDPort Jefferson, NY 117771720062375
- Paul LogranoPort Jefferson, NY 117771871577080
- John Petraco, MDPort Jefferson, NY 117771497739064
- Amy Richter, MDPort Jefferson, NY 117771255315461
- Gerardo Sanroman, MDPort Jefferson, NY 117771952387649
- Mindy ShaffranPort Jefferson, NY 117771922084383
Common questions
What is Jennifer Dale Marshak, MD's NPI number?
Jennifer Dale Marshak, MD's National Provider Identifier (NPI) is 1750365912, issued on Dec 1, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Jennifer Dale Marshak, MD located?
The NPPES record lists a practice address at 118 N Country RD, Port Jefferson, NY, 11777. Phone: (631) 473-7171. Providers update this record themselves, so call before visiting.
How can I verify Jennifer Dale Marshak, MD's license?
NPPES lists New York license number 211465, 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 Jennifer Dale Marshak, MD prescribe under Medicare Part D?
In 2024, Jennifer Dale Marshak, MD had 622 Medicare Part D claims for 255 beneficiaries; the average among obstetrics & gynecology physician prescribers was 165. Part D covers Medicare prescriptions only.
What is Jennifer Dale Marshak, MD's MIPS final score?
The 2023 MIPS final score is 99.2 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.