Jennifer E. Marshall, MD
Obstetrics & Gynecology Physician · Groton, CT
Jennifer E. Marshall, MD is an obstetrics & gynecology physician with a practice address in Groton, Connecticut, and NPI 1720512981, issued on Apr 14, 2017. Check the license (Connecticut 69156, as entered in NPPES) on the Connecticut Medical Examining Board; the Medicare figures below come from public CMS files.
- Name
- Jennifer E. Marshall
- Credential
- MD
- Primary taxonomy
- Obstetrics & Gynecology Physician 207V00000X
- License number
- 69156 CT
Self-reported in NPPES; status is on the state search - Practice location
- 491 Gold Star Hwy Ste 100, Groton, CT 06340
- Phone
- (860) 445-5107
- Enumerated
- Apr 14, 2017
- Record last updated
- Sep 14, 2021 (not updated in 5 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20211019002469); accepts Medicare assignment
- Medical or professional school
- Drexel University College Of Medicine, 2017
- Entity
- Type 1 · individual
8 nearest obstetrics & gynecology physician records → All 707 in Connecticut → Look up another NPI →
Also registered at 491 Gold Star Hwy Ste 100
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Chelsey Russ, M.D.Obstetrics & Gynecology Physician1699207118
Verify Jennifer E. Marshall in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersConnecticut Medical Examining Board
Search for license 69156Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
47% fewer Medicare Part D claims than the average obstetrics & gynecology physician in 2024
88 Medicare Part D claims for 25 beneficiaries, against an average of 165 among the 28,733 providers of this specialty who prescribed in Part D.
Most prescribed
- Estradiol19 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): 89.9 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: $127.69
4 payments; by number, the most common kind was food and beverage; the largest payer was Astellas Pharma US 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
- Physicians For Women's Health, LLCDanbury, CT
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Jennifer E. Marshall among 707 obstetrics & gynecology physician records in Connecticut
Jennifer E. Marshall, MD is one of 707 obstetrics & gynecology physician records with a practice address in Connecticut. 81% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2017, is newer than 82% of them.
- NPI issued2017 · 82% of these records are older, 15% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileYes · 69% of these records are
- Graduated2017 · median 2003 among the 488 with a school on file
- Record last updated2021 · 65% 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 Connecticut 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 Connecticut
There are 707 obstetrics & gynecology physician records in Connecticut.
All 707 in Connecticut → Every provider in Groton → Obstetrics & Gynecology Physician nationwide →
The 8 obstetrics & gynecology physician records with the nearest ZIP codes
- Peter Auerbach, MDGroton, CT 063401154412674
- Anthony Dilullo, MDGroton, CT 063401477667392
- Elisa Girard, MDGroton, CT 063401700861689
- Chelsey Russ, M.D.Groton, CT 063401699207118
- Michael Schrempf, MDGroton, CT 063401972694495
- Gerald Shaw, M.D.East Lyme, CT 063331477783413
- Richard Jones, MDNiantic, CT 063571841454485
- Henry Amdur, M.D.New London, CT 063201700920022
Common questions
What is Jennifer E. Marshall, MD's NPI number?
Jennifer E. Marshall, MD's National Provider Identifier (NPI) is 1720512981, issued on Apr 14, 2017. An NPI identifies a provider in billing; it is not a license.
Where is Jennifer E. Marshall, MD located?
The NPPES record lists a practice address at 491 Gold Star Hwy Ste 100, Groton, CT, 06340. Phone: (860) 445-5107. Providers update this record themselves, so call before visiting.
How can I verify Jennifer E. Marshall, MD's license?
NPPES lists Connecticut license number 69156, as entered by the provider. Search the Connecticut Medical Examining Board at https://www.elicense.ct.gov/Lookup/LicenseLookup.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Jennifer E. Marshall, MD prescribe under Medicare Part D?
In 2024, Jennifer E. Marshall, MD had 88 Medicare Part D claims for 25 beneficiaries; the average among obstetrics & gynecology physician prescribers was 165. Part D covers Medicare prescriptions only.
What is Jennifer E. Marshall, MD's MIPS final score?
The 2023 MIPS final score is 89.9 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.