Marc St Cyr, MD
NPI 1356907414 · Emergency Medicine Physician · Paoli, PA
Enrolled with Medicare as Practitioner - Emergency Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Marc St Cyr, MD is a Emergency Medicine Physician provider in Paoli, PA (NPI 1356907414).
Provider details
- NPI number
- 1356907414
- Entity type
- Individual
- Primary specialty
- Emergency Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- MD485187 (PA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
7 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
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
Registry dates
- Enumerated
- 2019-05-14
- Last updated
- 2025-11-10
- Certified
- 2025-11-10
Frequently asked questions
- What is Marc St Cyr's NPI number?
- Marc St Cyr's National Provider Identifier (NPI) is 1356907414, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Marc St Cyr's specialty?
- Marc St Cyr is listed in the NPPES registry with a primary specialty of Emergency Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Marc St Cyr located?
- Marc St Cyr's practice location on file with NPPES is 255 W Lancaster Ave, Paoli, PA 19301-1763.
- What is Marc St Cyr's phone number?
- The practice phone number listed in the NPPES registry for Marc St Cyr is (484) 565-1000.
- Does Marc St Cyr accept Medicare?
- Marc St Cyr is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Marc St Cyr's NPI active?
- Yes — Marc St Cyr's NPI (1356907414) is active in the NPPES registry as of the last update on 2025-11-10.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.