ALLISON R. THORN FNP
NPI 1952340317
Nurse Practitioner in Grant City, MO
About Allison R. Thorn Fnp NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
ALLISON R. THORN FNP (NPI 1952340317) is an individual nurse practitioner in Grant City, Missouri, licensed in Missouri (2001017678) and active in the NPI registry since June 2006. She is enrolled in Medicare PECOS, is affiliated with Mercy Hospital Lincoln, and maintains a secondary practice location in Wentzville.
NPPES Registry Identity
Specialties & Licenses 2
Secondary Practice Location 1
Other Identifiers 5
Accepted Insurance
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare and accepts Medicare assignment
Allison R. Thorn Fnp 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.
Medicare Billing Reassignments
7Medicare enrollment records show Allison Thorn reassigns Medicare billing to 7 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Troy, MO 63379
- Reassigned Medicare billing, Missouri enrollment
- Also billed through NPI 1962808733 (Missouri)
- 229 clinicians in this Medicare group
Wentzville, MO 63385
- Reassigned Medicare billing, Missouri enrollment
- 741 clinicians in this Medicare group
O Fallon, MO 63366
- Reassigned Medicare billing, Missouri enrollment
- 697 clinicians in this Medicare group
Madison, WI 53715
- Reassigned Medicare billing, Wisconsin enrollment
- 1,377 clinicians in this Medicare group
Mount Vernon, IL 62864
- Reassigned Medicare billing, Illinois enrollment
- 296 clinicians in this Medicare group
Beaver Dam, WI 53916
- Reassigned Medicare billing, Wisconsin enrollment
- 606 clinicians in this Medicare group
Oklahoma City, OK 73116
- Reassigned Medicare billing, Oklahoma enrollment
- 507 clinicians in this Medicare group
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
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 3
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Mercy Hospital Lincoln
Critical Access Hospitals · Troy, MOSsm Health St Mary's Hospital - Madison
Acute Care Hospitals · Madison, WISsm Health St Mary's Hospital - Janesville
Acute Care Hospitals · Janesville, WIPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 64456 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
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 Allison Thorn's NPI number?
The NPI number for Allison Thorn is 1952340317. It was assigned to this individual provider in the NPPES registry on June 4, 2006.
Where is Allison Thorn located?
Allison Thorn practices at 16 W. 4th St.,, Grant City, MO 64456. The listed phone number is (660) 564-3322.
What is Allison Thorn's specialty?
The primary specialty registered for this NPI is Nurse Practitioner with taxonomy code 363L00000X.
Is Allison Thorn enrolled in Medicare?
Yes. Allison Thorn 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.
Which organizations bill Medicare for Allison Thorn's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Allison Thorn reassigns Medicare benefits to 7 organizations: Mercy Hospital Lincoln (Troy, MO), Ssm Health Care St. Louis (Wentzville, MO), Ssm Medical Group, Inc. (O Fallon, MO), Dean Health Systems, Inc (Madison, WI), Physician Services Corporation Of Southern Illinois Inc. (Mount Vernon, IL) and 2 more organizations, listed in the Medicare section above. Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Allison Thorn's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Allison Thorn accept?
Health plans from Anthem Blue Cross and Blue Shield, Blue Cross and Blue Shield of Montana, Blue Cross and Blue Shield of Oklahoma, Medica and Oscar Insurance Company and 1 other insurer list Allison Thorn 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 Allison Thorn affiliated with any hospitals?
According to CMS data, Allison Thorn is affiliated with Mercy Hospital Lincoln, Ssm Health St Mary's Hospital - Madison and Ssm Health St Mary's Hospital - Janesville.
When was this NPI record last updated?
The NPPES record for Allison Thorn was last updated on November 10, 2020. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 6 years 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.
# Allison R. Thorn, FNP · NPI 1952340317
Nurse Practitioner physician in Grant City, Missouri. Individual provider, active in the CMS NPPES registry since June 4, 2006.
## Identity
- **NPI:** 1952340317 (Entity type: Individual)
- **Enumerated:** June 4, 2006
- **Primary specialty:** Nurse Practitioner · taxonomy 363L00000X
- **State license:** 2001017678 (Missouri)
- **Sole proprietor:** No
## Practice location
- **Address:** 16 W. 4TH ST.,, Grant City, MO 64456
- **Phone:** (660) 564-3322 · **Fax:** (660) 564-3324
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** 7 organizations under Medicare reassignment (form CMS-855R): Mercy Hospital Lincoln (NPI 1639575996, Troy, MO); Ssm Health Care St. Louis (NPI 1588618755, Wentzville, MO); Ssm Medical Group, Inc. (NPI 1851896146, O Fallon, MO); Dean Health Systems, Inc (NPI 1053358846, Madison, WI); Physician Services Corporation Of Southern Illinois Inc. (NPI 1831101807, Mount Vernon, IL); and 2 more · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2005
## Record status
- **NPPES last updated:** November 10, 2020
- **Other identifiers:** Medicaid 427378807 (MO); Other L280000 (MO); Medicaid 0599373 (IA); and 2 more
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Source: [NPI Profile](https://npiprofile.com/npi/1952340317) · Data from the CMS NPPES public registry.