Active NPI
Sara L Koster, FNP-BC
- Family Nurse Practitioner
- Grand Rapids, MI
On this page
Key facts
NPPES NPI Registry- Primary specialty
- Family Nurse Practitioner
- License
- 4704169831
- Practice address
- 100 Michigan St NE
Grand Rapids, MI 49503-2560 - Phone
- (616) 391-1680
- NPI assigned
- Jun 16, 2011
- Sex
- Female
- Sole proprietor
- No
NPPES NPI Registry
Registry information is reported by the provider to CMS and is not verified. About this source
Specialties & licenses 2
| Specialty (taxonomy) | Code | License | State | Primary |
|---|---|---|---|---|
| Family Nurse Practitioner | 363LF0000X | 4704169831 | MI | Primary |
| Nurse Practitioner | 363L00000X | 4704169831 | MI |
Addresses
Primary practice location
100 Michigan St NE
Grand Rapids, MI 49503-2560
Mailing address
2537 Momentum PL
Chicago, IL 60689-5325
Phone (616) 975-1845
Other practice location 1
300 68th St SE
Grand Rapids, MI 49548-6927
Phone (616) 455-5000
Electronic endpoints 1
| Type | Endpoint | Use | Affiliation |
|---|---|---|---|
| Direct Messaging Address | pinerestCMHS@directaddress.pinerest.org | Direct |
Medicare participation
Medicare enrollment files- Medicare fee-for-service enrollment
- Enrolled in MI
- Eligible to order & refer
- Part B services: Yes
- Medical equipment: Yes
- Home health: Yes
- Power mobility devices: Yes
- Hospice: No
Enrollment records 1
Care Compare profile
Medicare Care Compare- Specialty
- Nurse Practitioner
- Education
- Other, 2010
- Medicare assignment
- Accepts the Medicare-approved amount as payment in full
- Group practices
Practice addresses (Care Compare)
300 68TH St SE
Grand Rapids, MI 49548-6927
Phone (616) 455-5000
4055 Cascade Rd SE
Suite 100
Grand Rapids, MI 49546-2149
Phone (616) 252-4010
Hospital & facility affiliations
- University of Michigan Health - West
National Provider Directory
National Provider Directory- Medicare enrollment (NPD)
- Enrolled
State licenses
| License | State | Type | Specialty |
|---|---|---|---|
| 4704169831 | MI | MD | Nurse Practitioner |
Practice roles
| Organization | Specialty | Status | New patients |
|---|---|---|---|
| Metropolitan Hospital | Current | Accepting new patients |
Locations
4055 Cascade Rd SE
Ste 100
Grand Rapids, MI 49546
Phone (616) 252-4010
5900 Byron Center Ave SW
Wyoming, MI 49519
Phone (616) 252-3243
5950 Metro Way SW
Wyoming, MI 49519
Phone (616) 252-8100
Ownership & related parties
All facility ownership & control disclosures 1
Facilities whose Medicare enrollment lists this provider’s PECOS associate ID as an owner or managing party.
| Facility | Type | Role | Since |
|---|---|---|---|
| Emmanuel Hospice | Hospice | Corporate Director | Feb 8, 2022 |
Owned or controlled facilities with NPI records 1
Facilities whose Medicare enrollment lists this provider as an owner, officer, director or managing party.
-
- Community Based Hospice Care Agency
- Grand Rapids, MI
- NPI 1740548577
Corporate Director
Organizations & group practices 3
Organizations this provider is connected to: Medicare benefit reassignments (the organization bills Medicare for this provider’s services), Care Compare group memberships and National Provider Directory roles.
-
- Internal Medicine Physician
- Wyoming, MI
- NPI 1811937519
-
- Nurse Practitioner
- Grand Rapids, MI
- NPI 1467463604
-
- Emergency Medical Services (Emergency Medicine) Physician
- Wyoming, MI
- NPI 1104985001
Hospital & facility affiliations 1
Hospitals and other facilities this clinician is affiliated with according to Medicare Care Compare.
-
- General Acute Care Hospital
- Wyoming, MI
- NPI 1619923919
NPI Registry JSON
The complete NPPES record for this NPI in the NPI Registry API format.
{
"created_epoch": "1308182400000",
"enumeration_type": "NPI-1",
"last_updated_epoch": "1774483200000",
"number": "1740575877",
"addresses": [
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "MAILING",
"address_type": "DOM",
"address_1": "2537 MOMENTUM PL",
"city": "CHICAGO",
"state": "IL",
"postal_code": "606895325",
"telephone_number": "616-975-1845",
"fax_number": "616-285-0846"
},
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "LOCATION",
"address_type": "DOM",
"address_1": "100 MICHIGAN ST NE",
"city": "GRAND RAPIDS",
"state": "MI",
"postal_code": "495032560",
"telephone_number": "616-391-1680"
}
],
"practiceLocations": [
{
"address_1": "300 68th St SE",
"address_purpose": "LOCATION",
"city": "Grand Rapids",
"state": "MI",
"postal_code": "495486927",
"country_code": "US",
"telephone_number": "616-455-5000",
"fax_number": "616-455-5960",
"country_name": "United States",
"address_type": "DOM"
}
],
"basic": {
"last_name": "KOSTER",
"first_name": "SARA",
"middle_name": "L",
"credential": "FNP-BC",
"sole_proprietor": "NO",
"sex": "F",
"enumeration_date": "2011-06-16",
"last_updated": "2026-03-26",
"certification_date": "2026-03-26",
"status": "A"
},
"taxonomies": [
{
"code": "363LF0000X",
"taxonomy_group": "",
"desc": "Nurse Practitioner, Family",
"state": "MI",
"license": "4704169831",
"primary": true
},
{
"code": "363L00000X",
"taxonomy_group": "",
"desc": "Nurse Practitioner",
"state": "MI",
"license": "4704169831",
"primary": false
}
],
"identifiers": [],
"endpoints": [
{
"endpointType": "DIRECT",
"endpointTypeDescription": "Direct Messaging Address",
"endpoint": "pinerestCMHS@directaddress.pinerest.org",
"affiliation": "N",
"use": "DIRECT",
"useDescription": "Direct",
"address_1": "300 68th St SE",
"city": "Grand Rapids",
"state": "MI",
"country_code": "US",
"postal_code": "495486927",
"country_name": "United States",
"address_type": "DOM"
}
],
"other_names": []
}
Other providers in Grand Rapids, MI
Sources for this page
- NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Mar 26, 2026; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
- Medicare enrollment (CMS PECOS): enrollments, PAC IDs and benefit reassignments; facility enrollments, owners and changes of ownership; Provider of Services certification data; Order and Referring.
- Medicare Care Compare (CMS): clinician profile, group practices, facility affiliations, MIPS scores and star ratings.
- National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.