Active NPI
Guidestar Eldercare Corp - KS
Doing business as GuideStar Eldercare Corp - MO
- Internal Medicine Physician
- Columbia, MO
National Provider Identifier
1275484099
On this page
Key facts
NPPES NPI Registry- Primary specialty
- Internal Medicine Physician
- Legal business name
- GUIDESTAR ELDERCARE CORP - KS
- Doing business as
- GuideStar Eldercare Corp - MO
- Practice address
- 303 N Stadium Blvd FL 2
Columbia, MO 65203-1493 - Phone
- (574) 546-1900
- Fax
- (574) 546-1999
- NPI assigned
- Feb 6, 2026
- Last updated
- Mar 31, 2026
- Organization subpart
- Yes
- Parent organization
- GUIDESTAR ELDERCARE CORP - KS
NPPES NPI Registry
Registry information is reported by the provider to CMS and is not verified. About this source
Authorized official
- Name
- Steven L Posar, MD
- Title
- Exec. Chairman & Chief Med. Officer
- Phone
- (574) 546-1900
Authorized official NPPES reports the official by name only. The link goes to the one practitioner connected to this organization with that name.
Specialties & licenses 11
| Specialty (taxonomy) | Code | License | State | Primary |
|---|---|---|---|---|
| Nurse Practitioner | 363L00000X | |||
| Adult Health Nurse Practitioner | 363LA2200X | |||
| Family Nurse Practitioner | 363LF0000X | |||
| Gerontology Nurse Practitioner | 363LG0600X | |||
| Psychiatric/Mental Health Nurse Practitioner | 363LP0808X | |||
| Mental Health Counselor | 101YM0800X | |||
| Clinical Psychologist | 103TC0700X | |||
| Clinical Social Worker | 1041C0700X | |||
| Internal Medicine Physician | 207R00000X | Primary | ||
| Neurology Physician | 2084N0400X | |||
| Psychiatry Physician | 2084P0800X |
Addresses
Primary practice location
303 N Stadium Blvd FL 2
Columbia, MO 65203-1493
Mailing address
PO Box 11522
Fort Wayne, IN 46859-1522
Phone (574) 546-1900
Other practice location 1
10000 Wornall Rd
Kansas City, MO 64114-4359
Phone (574) 546-1900
Other practice location 2
1500 W Foxwood Dr
Raymore, MO 64083-9347
Phone (574) 546-1900
Other names 2
- GuideStar Eldercare Corp - MO
- GuideStar Eldercare Corp - KS, PC dba Guidestar Eldercare - MO
Medicare participation
Medicare enrollment files- Medicare fee-for-service enrollment
- Enrolled in MO
Enrollment records 1
| Enrollment ID | State | Provider type | PAC ID | Details |
|---|---|---|---|---|
| O20260310003241 | MO | Part B Supplier - Clinic/Group Practice | 9638665904 |
Receives reassigned benefits from 11 practitioners Practice locations: Columbia, MO; Raymore, MO |
Other NPIs with the same Medicare PAC ID 1
NPIs whose Medicare enrollments share a PECOS associate control ID (the same enrolled entity).
-
- Internal Medicine Physician
- Overland Park, KS
- NPI 1356203806
9638665904
National Provider Directory
National Provider Directory- Tax ID family
- Guidestar Eldercare Corp-KS
- Part of
- Guidestar Eldercare Corp-KS
Other organizations with this tax ID 1
Organizations that report the same tax identification number in the National Provider Directory.
-
- Internal Medicine Physician
- Overland Park, KS
- NPI 1356203806
Locations
21250 W 151st St
Olathe, KS 66061
Phone (201) 654-3130
Practitioners & affiliated clinicians
Practitioners 17
Individual providers connected to this organization through Medicare benefit reassignment, Care Compare group membership or National Provider Directory roles, and the practitioner matching its NPPES authorized official.
-
- Psychiatric/Mental Health Nurse Practitioner
- Independence, MO
- NPI 1275750309
-
- Family Nurse Practitioner
- Crown Point, IN
- NPI 1841768322
NPI Registry JSON
The complete NPPES record for this NPI in the NPI Registry API format.
{
"created_epoch": "1770336000000",
"enumeration_type": "NPI-2",
"last_updated_epoch": "1774915200000",
"number": "1275484099",
"addresses": [
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "MAILING",
"address_type": "DOM",
"address_1": "PO BOX 11522",
"city": "FORT WAYNE",
"state": "IN",
"postal_code": "468591522",
"telephone_number": "574-546-1900",
"fax_number": "574-546-1999"
},
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "LOCATION",
"address_type": "DOM",
"address_1": "303 N STADIUM BLVD FL 2",
"city": "COLUMBIA",
"state": "MO",
"postal_code": "652031493",
"telephone_number": "574-546-1900",
"fax_number": "574-546-1999"
}
],
"practiceLocations": [
{
"address_1": "10000 Wornall Rd",
"address_purpose": "LOCATION",
"city": "Kansas City",
"state": "MO",
"postal_code": "641144359",
"country_code": "US",
"telephone_number": "574-546-1900",
"fax_number": "574-546-1999",
"country_name": "United States",
"address_type": "DOM"
},
{
"address_1": "1500 W Foxwood Dr",
"address_purpose": "LOCATION",
"city": "Raymore",
"state": "MO",
"postal_code": "640839347",
"country_code": "US",
"telephone_number": "574-546-1900",
"fax_number": "574-546-1999",
"country_name": "United States",
"address_type": "DOM"
}
],
"basic": {
"organization_name": "GUIDESTAR ELDERCARE CORP - KS",
"organizational_subpart": "YES",
"parent_organization_legal_business_name": "GUIDESTAR ELDERCARE CORP - KS",
"enumeration_date": "2026-02-06",
"last_updated": "2026-03-31",
"certification_date": "2026-03-31",
"status": "A",
"authorized_official_last_name": "POSAR",
"authorized_official_first_name": "STEVEN",
"authorized_official_middle_name": "L",
"authorized_official_title_or_position": "EXEC. CHAIRMAN & CHIEF MED. OFFICER",
"authorized_official_telephone_number": "574-546-1900",
"authorized_official_credential": "MD"
},
"taxonomies": [
{
"code": "363L00000X",
"taxonomy_group": "",
"desc": "Nurse Practitioner",
"state": null,
"license": null,
"primary": false
},
{
"code": "363LA2200X",
"taxonomy_group": "",
"desc": "Nurse Practitioner, Adult Health",
"state": null,
"license": null,
"primary": false
},
{
"code": "363LF0000X",
"taxonomy_group": "",
"desc": "Nurse Practitioner, Family",
"state": null,
"license": null,
"primary": false
},
{
"code": "363LG0600X",
"taxonomy_group": "",
"desc": "Nurse Practitioner, Gerontology",
"state": null,
"license": null,
"primary": false
},
{
"code": "363LP0808X",
"taxonomy_group": "",
"desc": "Nurse Practitioner, Psychiatric/Mental Health",
"state": null,
"license": null,
"primary": false
},
{
"code": "101YM0800X",
"taxonomy_group": "",
"desc": "Counselor, Mental Health",
"state": null,
"license": null,
"primary": false
},
{
"code": "103TC0700X",
"taxonomy_group": "",
"desc": "Psychologist, Clinical",
"state": null,
"license": null,
"primary": false
},
{
"code": "1041C0700X",
"taxonomy_group": "",
"desc": "Social Worker, Clinical",
"state": null,
"license": null,
"primary": false
},
{
"code": "207R00000X",
"taxonomy_group": "",
"desc": "Internal Medicine",
"state": null,
"license": null,
"primary": true
},
{
"code": "2084N0400X",
"taxonomy_group": "",
"desc": "Psychiatry & Neurology, Neurology",
"state": null,
"license": null,
"primary": false
},
{
"code": "2084P0800X",
"taxonomy_group": "",
"desc": "Psychiatry & Neurology, Psychiatry",
"state": null,
"license": null,
"primary": false
}
],
"identifiers": [],
"endpoints": [],
"other_names": [
{
"organization_name": "GuideStar Eldercare Corp - MO",
"code": "3",
"type": "Doing Business As"
},
{
"organization_name": "GuideStar Eldercare Corp - KS, PC dba Guidestar Eldercare - MO",
"code": "5",
"type": "Other Name"
}
]
}Other providers in Columbia, MO
Sources for this page
- NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Mar 31, 2026; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
- Medicare enrollment (CMS PECOS): enrollments, PAC IDs and benefit reassignments.
- National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.