Erin Friesen
NPI 1255028122 · Physician Assistant · O Fallon, MO
Enrolled with Medicare as Practitioner - Physician Assistant · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Erin Friesen is a Physician Assistant provider in O Fallon, MO (NPI 1255028122).
Provider details
- NPI number
- 1255028122
- Entity type
- Individual
- Primary specialty
- Physician AssistantPhysician Assistants & Advanced Practice Nursing Providers
- Sex
- Female
- Sole proprietor
- No
- License
- 2024037659 (MO)
Specialties & taxonomies
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
3 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
- 2023-04-20
- Last updated
- 2026-05-05
- Certified
- 2026-05-05
Frequently asked questions
- What is Erin Friesen's NPI number?
- Erin Friesen's National Provider Identifier (NPI) is 1255028122, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Erin Friesen's specialty?
- Erin Friesen is listed in the NPPES registry with a primary specialty of Physician Assistant (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Erin Friesen located?
- Erin Friesen's practice location on file with NPPES is 2299 Technology Dr Ste 130, O Fallon, MO 63368-7342.
- What is Erin Friesen's phone number?
- The practice phone number listed in the NPPES registry for Erin Friesen is (636) 695-0400.
- Does Erin Friesen accept Medicare?
- Erin Friesen is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Erin Friesen's NPI active?
- Yes — Erin Friesen's NPI (1255028122) is active in the NPPES registry as of the last update on 2026-05-05.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.