Quick answers
- Which hospitals does Chelsea E. Marks work at?
- Medicare's official clinician data lists Chelsea E. Marks at 2 hospitals: UPMC Hanover and UPMC Williamsport. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Chelsea E. Marks see patients?
- Medicare's clinician data lists 2 practice locations, including Reading, PA and Hanover, PA. Call before your visit to confirm the address.
- What is Chelsea E. Marks's specialty?
- Medicare lists Obstetrics/Gynecology as the primary specialty.
- Does Chelsea E. Marks accept Medicare assignment?
- Yes. Medicare's clinician data says Chelsea E. Marks accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of 2026-10-02. Ask the office to confirm before your visit.
- What is the phone number for Chelsea E. Marks?
- (610) 988-4838, as listed in official Medicare / NPI Registry data.
- What is Chelsea E. Marks's NPI number?
- 1023371754. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Chelsea E. Marks works
Medicare's Facility Affiliation Data lists Chelsea E. Marks at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- UPMC HanoverHanover, PA · Acute Care Hospital · CCN 390233
- UPMC WilliamsportWilliamsport, PA · Acute Care Hospital · CCN 390045
Practice locations
Addresses where Chelsea E. Marks is enrolled with Medicare (CMS data updated 2026-10-02).
- 1110 Rockland StReading, PA 19604 (610) 988‑4838
- 20 N StHanover, PA 17331 (717) 316‑3939
Group practices
Medicare enrollment lists Chelsea E. Marks as a member of these groups (CMS data updated 2026-10-02).
- Pinnacle Health Medical Services1,019 clinicians in the group
- Berks Community Health Center16 clinicians in the group
Specialties
- Obstetrics/Gynecologyprimary
Other OB-GYNs in Reading
Clinicians with the same Medicare primary specialty in Reading, PA — not a recommendation.
Clinician information
| Credential | DO |
|---|---|
| Medical school | Philadelphia College Of Osteopathic Medicine |
| Graduation year | 2012 |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1023371754 |
| Corrections | Report an error or suggest an update → |
Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.
Sources
- Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated 2026-10-02, retrieved 2026-10-29
- National Downloadable File (Doctors and Clinicians) — CMS, data updated 2026-10-02, retrieved 2026-10-29
- NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
- Medicare Care Compare — official Medicare tool to look up clinicians