Marielle Gross, M.D.
NPI 1023420486 · Obstetrics & Gynecology Physician · Chambersburg, PA
Enrolled with Medicare as Practitioner - Obstetrics/Gynecology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Marielle Gross, M.D. is a Obstetrics & Gynecology Physician provider in Chambersburg, PA (NPI 1023420486).
Provider details
- NPI number
- 1023420486
- Entity type
- Individual
- Primary specialty
- Obstetrics & Gynecology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Female
- Sole proprietor
- Yes
- License
- MD470686 (PA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
12 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)
- 600 N Wolfe StBaltimore, MD 21287-0005Phone: (813) 541-6103
- 120 N 7th St Ste 200Chambersburg, PA 17201-1795Phone: (717) 217-6882Fax: (717) 255-0157
Registry dates
- Enumerated
- 2014-05-20
- Last updated
- 2026-03-18
- Certified
- 2026-03-18
Frequently asked questions
- What is Marielle Gross's NPI number?
- Marielle Gross's National Provider Identifier (NPI) is 1023420486, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Marielle Gross's specialty?
- Marielle Gross is listed in the NPPES registry with a primary specialty of Obstetrics & Gynecology Physician (Allopathic & Osteopathic Physicians).
- Where is Marielle Gross located?
- Marielle Gross's practice location on file with NPPES is 12 St Paul Dr, Chambersburg, PA 17201-1035.
- What is Marielle Gross's phone number?
- The practice phone number listed in the NPPES registry for Marielle Gross is (717) 217-6882.
- Does Marielle Gross accept Medicare?
- Marielle Gross is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Marielle Gross's NPI active?
- Yes — Marielle Gross's NPI (1023420486) is active in the NPPES registry as of the last update on 2026-03-18.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.