SUSAN L MASTENBROOK NP
NPI 1205194248
Nurse Practitioner - Family in Kalamazoo, MI
About Susan L Mastenbrook Np NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
SUSAN L MASTENBROOK NP (NPI 1205194248) is an individual family provider in Kalamazoo, Michigan, licensed in Michigan (4704207644) and active in the NPI registry since April 2012. She is enrolled in Medicare PECOS, is affiliated with Borgess Medical Center, and maintains a secondary practice location in Kalamazoo.
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
Susan L Mastenbrook Np 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
2Medicare enrollment records show Susan Mastenbrook reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Kalamazoo, MI 49048
- Reassigned Medicare billing, Michigan enrollment
- Medicare enrollment name: Ascension Borgess Hospital
- 247 clinicians in this Medicare group
Kalamazoo, MI 49048
- Reassigned Medicare billing, Michigan enrollment
- Medicare enrollment name: Ascension Medical Group Promed
- 465 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.
Hospital Affiliations CMS Care Compare
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Borgess Medical Center
Acute Care Hospitals · Kalamazoo, MIPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 49048 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Medicare Quality Performance CMS QPP · MIPS
Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.
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.
KALAMAZOO, MI 49048
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 Susan Mastenbrook's NPI number?
The NPI number for Susan Mastenbrook is 1205194248. It was assigned to this individual provider in the NPPES registry on April 27, 2012.
Where is Susan Mastenbrook located?
Susan Mastenbrook practices at 1521 Gull Rd, Kalamazoo, MI 49048. The listed phone number is (269) 226-7000.
What is Susan Mastenbrook's specialty?
The primary specialty registered for this NPI is Nurse Practitioner, specializing in Family, with taxonomy code 363LF0000X.
Is Susan Mastenbrook enrolled in Medicare?
Yes. Susan Mastenbrook 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 Susan Mastenbrook's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Susan Mastenbrook reassigns Medicare benefits to 2 organizations: Beacon Kalamazoo Inc (Kalamazoo, MI) and Beacon Medical Group Michigan Inc (Kalamazoo, MI). 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 Susan Mastenbrook's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Susan Mastenbrook accept?
Health plans from Ambetter Health, Ambetter from Buckeye Health Plan, Ambetter from Meridian, Blue Care Network of Michigan and Blue Cross Blue Shield of Michigan Mutual Insurance Company and 1 other insurer list Susan Mastenbrook 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 Susan Mastenbrook affiliated with any hospitals?
According to CMS data, Susan Mastenbrook is affiliated with Borgess Medical Center.
When was this NPI record last updated?
The NPPES record for Susan Mastenbrook was last updated on December 27, 2022. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 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.
# Susan L Mastenbrook, NP · NPI 1205194248
Family physician in Kalamazoo, Michigan. Individual provider, active in the CMS NPPES registry since April 27, 2012.
## Identity
- **NPI:** 1205194248 (Entity type: Individual)
- **Enumerated:** April 27, 2012
- **Primary specialty:** Nurse Practitioner - Family · taxonomy 363LF0000X
- **State license:** 4704207644 (Michigan)
- **Sole proprietor:** Yes
## Practice location
- **Address:** 1521 GULL RD, Kalamazoo, MI 49048-1640
- **Phone:** (269) 226-7000
## 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:** 2 organizations under Medicare reassignment (form CMS-855R): Beacon Kalamazoo Inc (NPI 1093749848, Kalamazoo, MI); Beacon Medical Group Michigan Inc (NPI 1720009954, Kalamazoo, MI) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2012
## Record status
- **NPPES last updated:** December 27, 2022
---
Source: [NPI Profile](https://npiprofile.com/npi/1205194248) · Data from the CMS NPPES public registry.