Chelsea Erin Marks, DO - Medicare Obstetrics & Gynecology in Hanover, PA

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Chelsea Erin Marks, DO is a medicare enrolled "Obstetrics & Gynecology" physician in Hanover, Pennsylvania. Her current practice location is 20 North St, Hanover, Pennsylvania. You can reach out to her office (for appointments etc.) via phone at (717) 637-7755.

Chelsea Erin Marks is licensed to practice in Pennsylvania (license number OS018285) and she also participates in the medicare program. She does not accept medicare assignments directly but she may accept medicare through third-party (refer to Reassignment section below) and may also prescribe medicare part D drugs. Her NPI Number is 1023371754.

Contact Information

Chelsea Erin Marks, DO
20 North St,
Hanover, PA 17331-2275
(717) 637-7755
(717) 637-7142

Map and Direction




Physician's Profile

Full NameChelsea Erin Marks
GenderFemale
SpecialityObstetrics & Gynecology
Location20 North St, Hanover, Pennsylvania
Accepts Medicare AssignmentsMedicare enrolled and may accept medicare through third-party reassignment. May prescribe medicare part D drugs.
  NPI Data:
  • NPI Number: 1023371754
  • Provider Enumeration Date: 06/18/2012
  • Last Update Date: 12/31/2025
  Medicare PECOS Information:
  • PECOS PAC ID: 7618264136
  • Enrollment ID: I20160928000149

Medical Identifiers

Medical identifiers for Chelsea Erin Marks such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1023371754NPI-NPPES
PO1727515OtherPARAILROAD

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207V00000XObstetrics & Gynecology OS018285 (Pennsylvania)Primary
390200000XStudent In An Organized Health Care Education/training Program (* (Not Available))Secondary

Medicare Reassignments

Some practitioners may not bill the customers directly but medicare billing happens through clinics / group practice / hospitals where the provider works. Medicare reassignment of benefits is a mechanism by which practitioners allow third parties to bill and receive payment for medicare services performed by them. Chelsea Erin Marks allows following entities to bill medicare on her behalf.
Entity NameWellspan Medical Group
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1669770004
PECOS PAC ID: 1951213115
Enrollment ID: O20040220000815
Entity NameBerks Community Health Center
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1649525569
PECOS PAC ID: 2860643582
Enrollment ID: O20130716000431

Medicare Part D Prescriber Enrollment

Any physician or other eligible professional who prescribes Part D drugs must either enroll in the Medicare program or opt out in order to prescribe drugs to their patients with Part D prescription drug benefit plans. Chelsea Erin Marks is enrolled with medicare and thus, if eligible, can prescribe medicare part D drugs to patients with medicare part D benefits.

Mailing Address and Practice Location

Mailing AddressPractice Location Address
Chelsea Erin Marks, DO
20 North St,
Hanover, PA 17331-2275

Ph: (717) 637-7755		Chelsea Erin Marks, DO
20 North St,
Hanover, PA 17331-2275

Ph: (717) 637-7755

Reviews and Comments


Obstetrics & Gynecology Doctors in Hanover, PA

Daniel F P Victoria, M.D.
Obstetrics & Gynecology
Medicare: Accepting Medicare Assignments
Practice Location: 20 North St, Hanover, PA 17331
Phone: 717-637-7755    
Claudia P Twum, M.D.
Obstetrics & Gynecology
Medicare: Accepting Medicare Assignments
Practice Location: 1227 Baltimore St, Hanover, PA 17331
Phone: 717-633-1433    Fax: 717-633-1838
Cynthia Bischoff,
Obstetrics & Gynecology
Medicare: Not Enrolled in Medicare
Practice Location: 200 E Walnut St, Hanover, PA 17331
Phone: 717-630-9330    
Dr. Jessica Lauren Wirth Tocks, D.O.
Obstetrics & Gynecology
Medicare: Accepting Medicare Assignments
Practice Location: 1227 Baltimore St, Hanover, PA 17331
Phone: 717-633-1433    
Dr. Susan D Peck, D.O.
Obstetrics & Gynecology
Medicare: Accepting Medicare Assignments
Practice Location: 300 Frederick St, Hanover, PA 17331
Phone: 717-316-2255    
Dr. Erika L Nichelson, DO
Obstetrics & Gynecology
Medicare: Accepting Medicare Assignments
Practice Location: 20 North St, Hanover, PA 17331
Phone: 717-637-7755    Fax: 717-637-7142

Medicare Program: Medicare is a federal government program which provides health insurance to people who are 65 or older. This program also covers certain younger people with disabilities (who receive Social Security Disability Insurance - SSDI), and people with End-Stage Renal Disease (permanent kidney failure requiring dialysis or a transplant, sometimes called ESRD.

Medicare Assignment: Assignment means that your doctor, provider, or supplier agrees (or is required by law) to accept the Medicare-approved amount as full payment for covered services. Most doctors, providers, and suppliers accept assignment, but you should always check to make sure. Participating providers have signed an agreement to accept assignment for all Medicare-covered services.

NPI Number: The National Provider Identifier (NPI) is a unique identification number for covered health care providers. The NPI must be used in lieu of legacy provider identifiers in the HIPAA standards transactions. Covered health care providers and all health plans and health care clearinghouses must use the NPIs in the administrative and financial transactions adopted under HIPAA (Health Insurance Portability and Accountability Act).

Our Data: Information on www.medicarelist.com is built using data sources published by Centers for Medicare & Medicaid Services (CMS) under Freedom of Information Act (FOIA). The information disclosed on the NPI Registry are FOIA-disclosable and are required to be disclosed under the FOIA and the eFOIA amendments to the FOIA. There is no way to 'opt out' or 'suppress' the NPPES record data for health care providers with active NPIs.