MS. OLIVIA FAETH HASSELFELD PA
NPI 1194334094
Physician Assistant in O Fallon, MO
About Ms. Olivia Faeth Hasselfeld Pa NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MS. OLIVIA FAETH HASSELFELD PA (NPI 1194334094) is an individual physician assistant in O Fallon, Missouri, licensed in Missouri (2020026369) and active in the NPI registry since July 2020. She is enrolled in Medicare PECOS, is affiliated with Barnes Jewish Hospital, and is a graduate of Other (2020).
NPPES Registry Identity
Specialties & Licenses
Other Identifiers 1
Accepted Insurance
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.
Medicare Enrollment Status
Enrolled in Medicare and accepts Medicare assignment
Ms. Olivia Faeth Hasselfeld Pa is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.
Areas of Expertise CMS Part B claims 2
Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.
Hospital Affiliations CMS Care Compare 4
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Barnes Jewish Hospital
Acute Care Hospitals · Saint Louis, MOChristian Hospital Northeast
Acute Care Hospitals · Saint Louis, MOBarnes-Jewish St Peters Hospital
Acute Care Hospitals · Saint Peters, MOProgress West Hospital
Acute Care Hospitals · O Fallon, MOPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 63368 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Medicare Quality Performance CMS QPP · MIPS
Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.
Other Providers at the Same Location NPPES 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
O FALLON, MO 63368
O FALLON, MO 63368
O FALLON, MO 63368
O FALLON, MO 63368
O FALLON, MO 63368
O FALLON, MO 63368
Frequently Asked Questions NPPES & CMS
Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.
What is Olivia Hasselfeld's NPI number?
The NPI number for Olivia Hasselfeld is 1194334094. It was assigned to this individual provider in the NPPES registry on July 27, 2020.
Where is Olivia Hasselfeld located?
Olivia Hasselfeld practices at 2 Progress Point Pkwy Div Im Medical Oncology, O Fallon, MO 63368. The listed phone number is (800) 647-2098.
What is Olivia Hasselfeld's specialty?
The primary specialty registered for this NPI is Physician Assistant with taxonomy code 363A00000X.
Is Olivia Hasselfeld enrolled in Medicare?
Yes. Olivia Hasselfeld is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.
What insurance does Olivia Hasselfeld accept?
Health plans from Cox HealthPlans list Olivia Hasselfeld as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.
Is Olivia Hasselfeld affiliated with any hospitals?
According to CMS data, Olivia Hasselfeld is affiliated with Barnes Jewish Hospital, Christian Hospital Northeast, Barnes-Jewish St Peters Hospital and Progress West Hospital.
When was this NPI record last updated?
The NPPES record for Olivia Hasselfeld was last updated on April 17, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 15 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.
# Ms. Olivia Faeth Hasselfeld, PA · NPI 1194334094
Physician Assistant physician in O Fallon, Missouri. Individual provider, active in the CMS NPPES registry since July 27, 2020.
## Identity
- **NPI:** 1194334094 (Entity type: Individual)
- **Enumerated:** July 27, 2020
- **Primary specialty:** Physician Assistant · taxonomy 363A00000X
- **State license:** 2020026369 (Missouri)
- **Sole proprietor:** No
## Practice location
- **Address:** 2 PROGRESS POINT PKWY, DIV IM MEDICAL ONCOLOGY, O Fallon, MO 63368-2205
- **Phone:** (800) 647-2098 · **Fax:** (314) 362-3192
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Medical school:** Other, class of 2020
## Record status
- **NPPES last updated:** April 17, 2025
- **Other identifiers:** Medicaid 220117552 (MO)
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Source: [NPI Profile](https://npiprofile.com/npi/1194334094) · Data from the CMS NPPES public registry.