Jennifer Lynn Marshalek, D.O.
Obstetrics & Gynecology Physician · Williamsport, PA
Jennifer Lynn Marshalek, D.O. is an obstetrics & gynecology physician with a practice address in Williamsport, Pennsylvania, and NPI 1619289618, issued on Jul 7, 2010. Check the license (Pennsylvania OS016850, as entered in NPPES) on the Pennsylvania Department of State (PALS); the Medicare figures below come from public CMS files.
- Name
- Jennifer Lynn Marshalek
- Credential
- D.O.
- Primary taxonomy
- Obstetrics & Gynecology Physician 207V00000X
- License number
- OS016850 PA
Self-reported in NPPES; status is on the state search - Practice location
- 740 High St Ste 1004, Williamsport, PA 17701
- Phone
- (570) 321-3300
- Enumerated
- Jul 7, 2010
- Record last updated
- Jul 23, 2026
- Medicare enrollment
- Enrolled (PECOS I20141001001534); accepts Medicare assignment
- Medical or professional school
- At Still University Of Health Sciences, College Of Osteo Med, Kirksville, 2010
- Entity
- Type 1 · individual
8 nearest obstetrics & gynecology physician records → All 1,974 in Pennsylvania → Look up another NPI →
Also registered at 740 High St Ste 1004
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Cassandra Brodginski, CNMAdvanced Practice Midwife1295621001
- Heather Brooks, CNMAdvanced Practice Midwife1437979499
- Jessica Callahan Wait, CNMAdvanced Practice Midwife1750996138
- Mary Alice Decoursey, CNMAdvanced Practice Midwife1952439507
- Autumn Hill, CNMAdvanced Practice Midwife1174162465
- Sarah Kozlowski, PA-CPhysician Assistant1598499246
Verify Jennifer Lynn Marshalek in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersPennsylvania Department of State (PALS)
Search for license OS016850Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
27% fewer Medicare Part D claims than the average obstetrics & gynecology physician in 2024
120 Medicare Part D claims for 49 beneficiaries, against an average of 165 among the 28,733 providers of this specialty who prescribed in Part D. Brand-name drugs were 9% of claims.
Most prescribed
- Estradiol27 claims
- Megestrol Acetate13 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 one group practice
- Susquehanna Physician ServicesWilliamsport, PA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Jennifer Lynn Marshalek among 1,974 obstetrics & gynecology physician records in Pennsylvania
Jennifer Lynn Marshalek, D.O. is one of 1,974 obstetrics & gynecology physician records with a practice address in Pennsylvania. 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 2010, is newer than 58% of them.
- NPI issued2010 · 58% of these records are older, 39% newer
- In a Medicare fileYes · 75% of these records are
- In the CMS Doctors and Clinicians fileYes · 60% of these records are
- Graduated2010 · median 2007 among the 1,176 with a school on file
- Record last updated2026 · 58% 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 Pennsylvania 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 Pennsylvania
There are 1,974 obstetrics & gynecology physician records in Pennsylvania.
All 1,974 in Pennsylvania → Every provider in Williamsport → Obstetrics & Gynecology Physician nationwide →
The 8 obstetrics & gynecology physician records with the nearest ZIP codes
- Natasha Alligood-Percoco, M.D.Williamsport, PA 177011881951762
- Leonard Collins, M.D.Williamsport, PA 177011962499301
- Angela HugglerWilliamsport, PA 177011700097227
- Charles LamadeWilliamsport, PA 177011023005816
- Pankaj Mehta, M.D.Williamsport, PA 177011447248570
- Farag SalamaWilliamsport, PA 177011952482382
- Joshua Stutzman, D.O.Williamsport, PA 177011467610832
- Jennifer Vasinda, DOWilliamsport, PA 177011558327460
Common questions
What is Jennifer Lynn Marshalek, D.O.'s NPI number?
Jennifer Lynn Marshalek, D.O.'s National Provider Identifier (NPI) is 1619289618, issued on Jul 7, 2010. An NPI identifies a provider in billing; it is not a license.
Where is Jennifer Lynn Marshalek, D.O. located?
The NPPES record lists a practice address at 740 High St Ste 1004, Williamsport, PA, 17701. Phone: (570) 321-3300. Providers update this record themselves, so call before visiting.
How can I verify Jennifer Lynn Marshalek, D.O.'s license?
NPPES lists Pennsylvania license number OS016850, as entered by the provider. Search the Pennsylvania Department of State (PALS) at https://www.pals.pa.gov/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Jennifer Lynn Marshalek, D.O. prescribe under Medicare Part D?
In 2024, Jennifer Lynn Marshalek, D.O. had 120 Medicare Part D claims for 49 beneficiaries; the average among obstetrics & gynecology physician prescribers was 165. 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.