DR. GREGORY DEWITT FOLKERT MD
NPI 1063538015
Emergency Medicine in Alton, IL
About Dr. Gregory Dewitt Folkert Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. GREGORY DEWITT FOLKERT MD (NPI 1063538015) is an individual emergency medicine provider in Alton, Illinois, licensed in Missouri (2008008950) and active in the NPI registry since March 2007. He is enrolled in Medicare PECOS, is affiliated with Osf Saint Anthony's Health Center, and maintains a secondary practice location in Saint Louis.
NPPES Registry Identity
Specialties & Licenses
Secondary Practice Location 1
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
Dr. Gregory Dewitt Folkert Md 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
9Medicare enrollment records show Gregory Folkert reassigns Medicare billing to 9 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Alton, IL 62002
- Reassigned Medicare billing, Illinois enrollment
- 42 clinicians in this Medicare group
Alton, IL 62002
- Reassigned Medicare billing, Illinois and Missouri enrollments
- 65 clinicians in this Medicare group
Bridgeton, MO 63044
- Reassigned Medicare billing, Missouri enrollment
- 269 clinicians in this Medicare group
Gillespie, IL 62033
- Reassigned Medicare billing, Illinois enrollment
- Also billed through NPI 1053425124 (Illinois)
- 78 clinicians in this Medicare group
Belleville, IL 62226
- Reassigned Medicare billing, Illinois enrollment
- 111 clinicians in this Medicare group
Saint Louis, MO 63128
- Reassigned Medicare billing, Missouri enrollment
- 186 clinicians in this Medicare group
Winfield, MO 63389
- Reassigned Medicare billing, Missouri enrollment
- Also billed through NPI 1962808733 (Missouri)
- 229 clinicians in this Medicare group
Hillsboro, IL 62049
- Reassigned Medicare billing, Illinois enrollment
- Also billed through NPI 1821078213 (Illinois)
- 59 clinicians in this Medicare group
Perryville, MO 63775
- Reassigned Medicare billing, Missouri enrollment
- Also billed through NPI 1063117158 (Missouri)
- 192 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 3
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 2
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Osf Saint Anthony's Health Center
Acute Care Hospitals · Alton, ILMercy Hospital Lincoln
Critical Access Hospitals · Troy, MOPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 62002 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
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.
ALTON, IL 62002
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 Gregory Folkert's NPI number?
The NPI number for Gregory Folkert is 1063538015. It was assigned to this individual provider in the NPPES registry on March 21, 2007.
Where is Gregory Folkert located?
Gregory Folkert practices at 1 Saint Anthonys Way, Alton, IL 62002. The listed phone number is (618) 465-2571.
What is Gregory Folkert's specialty?
The primary specialty registered for this NPI is Emergency Medicine with taxonomy code 207P00000X.
Is Gregory Folkert enrolled in Medicare?
Yes. Gregory Folkert 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 Gregory Folkert's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Gregory Folkert reassigns Medicare benefits to 9 organizations: Alton-Griffin Emergency Group PC (Alton, IL), Southeastern Emergency Physicians Of Memphis LLC (Alton, IL), Cep America LLC (Bridgeton, MO), Carlinville Area Hospital Association (Gillespie, IL), Emergency Services Midwest Sc (Belleville, IL) and 4 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 Gregory Folkert's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Gregory Folkert accept?
Health plans from Anthem Blue Cross and Blue Shield list Gregory Folkert 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 Gregory Folkert affiliated with any hospitals?
According to CMS data, Gregory Folkert is affiliated with Osf Saint Anthony's Health Center and Mercy Hospital Lincoln.
When was this NPI record last updated?
The NPPES record for Gregory Folkert was last updated on August 23, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 13 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.
# Dr. Gregory Dewitt Folkert, MD · NPI 1063538015
Emergency Medicine physician in Alton, Illinois. Individual provider, active in the CMS NPPES registry since March 21, 2007.
## Identity
- **NPI:** 1063538015 (Entity type: Individual)
- **Enumerated:** March 21, 2007
- **Primary specialty:** Emergency Medicine · taxonomy 207P00000X
- **State license:** 2008008950 (Missouri)
- **Sole proprietor:** No
## Practice location
- **Address:** 1 SAINT ANTHONYS WAY, Alton, IL 62002-4568
- **Phone:** (618) 465-2571
## 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:** 9 organizations under Medicare reassignment (form CMS-855R): Alton-Griffin Emergency Group PC (NPI 1891104824, Alton, IL); Southeastern Emergency Physicians Of Memphis LLC (NPI 1437105277, Alton, IL); Cep America LLC (NPI 1851946370, Bridgeton, MO); Carlinville Area Hospital Association (NPI 1295518769, Gillespie, IL); Emergency Services Midwest Sc (NPI 1174024806, Belleville, IL); and 4 more · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** University Of Michigan Medical School, class of 2005
## Record status
- **NPPES last updated:** August 23, 2025
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Source: [NPI Profile](https://npiprofile.com/npi/1063538015) · Data from the CMS NPPES public registry.