NPIMap

Individual provider Active NPI

Philip Edward Siefken, M.D.

  • Pediatrics Physician
  • Greenville, IL
National Provider Identifier
1689629107
Registry record updated Jan 7, 2026
On this page

Key facts

NPPES NPI Registry
Primary specialty
Pediatrics PhysicianTaxonomy code 208000000X
License
036088335 Issued in IL
Practice address
1000 Red Ball TRL
Greenville, IL 62246-2781
Phone
(618) 664-1240
Fax
(618) 690-2189
NPI assigned
May 23, 2006
Last updated
Jan 7, 2026By the provider in NPPES
Sex
Male
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on Jan 7, 2026

Registry information is reported by the provider to CMS and is not verified. About this source

Specialties & licenses 3

Specialty (taxonomy)CodeLicenseStatePrimary
Family Medicine Physician 207Q00000X 036088335 IL
Internal Medicine Physician 207R00000X 036088335 IL
Pediatrics Physician 208000000X 036088335 IL Primary

Addresses

Primary practice location

1000 Red Ball TRL
Greenville, IL 62246-2781

Mailing address

PO Box 372
Mattoon, IL 61938-0372

Other identifiers 1

IdentifierTypeStateIssuer
193400000XOtherILTAXONOMYNCODE

Medicare participation

Medicare enrollment files
Medicare fee-for-service enrollment
Enrolled in IL
Eligible to order & refer
  • Part B services
  • Medical equipment
  • Home health
  • Power mobility devices
  • Hospice
Green means eligible to order or refer.

Enrollment records 1

Enrollment IDStateProvider typePAC IDDetails
I20060809000182 IL Practitioner - Pediatric MedicinePractitioner - Internal Medicine 3870596034

Care Compare profile

Medicare Care Compare
Specialty
Pediatric MedicineAlso: Internal Medicine
Education
University of Illinois College of Med (CHI/Peor/Rock/CHM-Urb), 1990
Medicare assignment
Accepts the Medicare-approved amount as payment in full
Group practices
Greenville Family Medicine, LLCGroup PAC ID 0446665525, 6 clinicians
Sarah Bush Lincoln Health CenterGroup PAC ID 5092614867, shared by 11 NPIs, 411 clinicians

Practice addresses (Care Compare)

1000 Red Ball TRL
Greenville, IL 62246-2781

1442 N 8TH St
Vandalia, IL 62471-1031
Phone (618) 283-1617

1611 Veterans Ave
Suite T
Vandalia, IL 62471-3303
Phone (217) 238-4908

650 W Taylor St
Vandalia, IL 62471-1227
Phone (618) 283-5444

650 W Taylor St
Fayette Co. Hospital Specialty Clinic 2ND
Vandalia, IL 62471-1296
Phone (217) 342-3400

Hospital & facility affiliations

National Provider Directory

National Provider Directory
Medicare enrollment (NPD)
Enrolled
Credentials
Doctor of Medicine

Practice roles

OrganizationSpecialtyStatusNew patients
Greenville Family Medicine, LLC Family Medicine CurrentSince Jan 1, 2021 Accepting new patients
Greenville Family Medicine, LLC CurrentSince Jan 1, 2021 Accepting new patients
Major Hospital Past Accepting new patients
Sarah Bush Lincoln Health Center Past Accepting new patients

Locations

1000 Red Ball Trl
Greenville, IL 62246
Phone (618) 391-6495

Interoperability endpoints

  • FHIR API: https://fhir4.healow.com/fhir/r4/ECDGDD

Organizations & group practices 4

Organizations this provider is connected to: Medicare benefit reassignments (the organization bills Medicare for this provider’s services), Care Compare group memberships, National Provider Directory roles and organizations whose NPPES authorized official is this provider.

Hospital & facility affiliations 8

Hospitals and other facilities this clinician is affiliated with according to Medicare Care Compare.

NPI Registry JSON

The complete NPPES record for this NPI in the NPI Registry API format.

{
    "created_epoch": "1148342400000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1767744000000",
    "number": "1689629107",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "PO BOX 372",
            "city": "MATTOON",
            "state": "IL",
            "postal_code": "619380372"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "1000 RED BALL TRL",
            "city": "GREENVILLE",
            "state": "IL",
            "postal_code": "622462781",
            "telephone_number": "618-664-1240",
            "fax_number": "618-690-2189"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "SIEFKEN",
        "first_name": "PHILIP",
        "middle_name": "EDWARD",
        "name_prefix": "Dr.",
        "credential": "M.D.",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2006-05-23",
        "last_updated": "2026-01-07",
        "certification_date": "2026-01-07",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207Q00000X",
            "taxonomy_group": "",
            "desc": "Family Medicine",
            "state": "IL",
            "license": "036088335",
            "primary": false
        },
        {
            "code": "207R00000X",
            "taxonomy_group": "",
            "desc": "Internal Medicine",
            "state": "IL",
            "license": "036088335",
            "primary": false
        },
        {
            "code": "208000000X",
            "taxonomy_group": "",
            "desc": "Pediatrics",
            "state": "IL",
            "license": "036088335",
            "primary": true
        }
    ],
    "identifiers": [
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "TAXONOMYNCODE",
            "identifier": "193400000X",
            "state": "IL"
        }
    ],
    "endpoints": [],
    "other_names": []
}

Other providers in Greenville, IL

Sources for this page

Verify at the official NPI Registry.