Chelsea Marks, D.O.
NPI 1023371754 · Obstetrics & Gynecology Physician · Hanover, PA
Enrolled with Medicare as Practitioner - Obstetrics/Gynecology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Chelsea Marks, D.O. is a Obstetrics & Gynecology Physician provider in Hanover, PA (NPI 1023371754).
Provider details
- NPI number
- 1023371754
- Entity type
- Individual
- Primary specialty
- Obstetrics & Gynecology PhysicianAllopathic & Osteopathic Physicians
- Credential
- D.O.
- Sex
- Female
- Sole proprietor
- No
- License
- OS018285 (PA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Student, Health Care
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
14 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
3 documented practice locations
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
Practice location
Mailing address
Additional practice locations (2)
- 450 S Washington StSuite BGettysburg, PA 17325-2500Phone: (717) 337-4487Fax: (717) 337-4324
- 20 Expedition Trl Ste 203Gettysburg, PA 17325-8599Phone: (717) 334-4455Fax: (717) 334-4456
Registry dates
- Enumerated
- 2012-06-18
- Last updated
- 2025-12-31
- Certified
- 2025-12-31
Frequently asked questions
- What is Chelsea Marks's NPI number?
- Chelsea Marks's National Provider Identifier (NPI) is 1023371754, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Chelsea Marks's specialty?
- Chelsea Marks is listed in the NPPES registry with a primary specialty of Obstetrics & Gynecology Physician (Allopathic & Osteopathic Physicians).
- Where is Chelsea Marks located?
- Chelsea Marks's practice location on file with NPPES is 20 North St, Hanover, PA 17331-2275.
- What is Chelsea Marks's phone number?
- The practice phone number listed in the NPPES registry for Chelsea Marks is (717) 637-7755.
- Does Chelsea Marks accept Medicare?
- Chelsea Marks is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Chelsea Marks's NPI active?
- Yes — Chelsea Marks's NPI (1023371754) is active in the NPPES registry as of the last update on 2025-12-31.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.