Cathy Si, PA-C
NPI 1609613413 · Medical Physician Assistant · Wynnewood, PA
Enrolled with Medicare as Practitioner - Physician Assistant · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Cathy Si, PA-C is a Medical Physician Assistant provider in Wynnewood, PA (NPI 1609613413).
Provider details
- NPI number
- 1609613413
- Entity type
- Individual
- Primary specialty
- Medical Physician AssistantPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- PA-C
- Sex
- Female
- Sole proprietor
- No
- License
- MA065526 (PA)
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
Physician Assistants & Advanced Practice Nursing Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
1 yr 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
- 2024-07-09
- Last updated
- 2024-10-16
- Certified
- 2024-10-16
Frequently asked questions
- What is Cathy Si's NPI number?
- Cathy Si's National Provider Identifier (NPI) is 1609613413, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Cathy Si's specialty?
- Cathy Si is listed in the NPPES registry with a primary specialty of Medical Physician Assistant (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Cathy Si located?
- Cathy Si's practice location on file with NPPES is 100 E Lancaster Ave, Wynnewood, PA 19096-3450.
- What is Cathy Si's phone number?
- The practice phone number listed in the NPPES registry for Cathy Si is (484) 476-2000.
- Does Cathy Si accept Medicare?
- Cathy Si is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Cathy Si's NPI active?
- Yes — Cathy Si's NPI (1609613413) is active in the NPPES registry as of the last update on 2024-10-16.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.