DR. AMY RILEY SPENCER MD
NPI 1043489842
Surgery - Surgical Critical Care in Grand Rapids, MI
About Dr. Amy Riley Spencer Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. AMY RILEY SPENCER MD (NPI 1043489842) is an individual surgical critical care provider in Grand Rapids, Michigan, licensed in Michigan (4301088136) and active in the NPI registry since February 2008. She is enrolled in Medicare PECOS, is affiliated with Spectrum Health, and is a graduate of Other (2006).
NPPES Registry Identity
Specialties & Licenses 2
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. Amy Riley Spencer 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
3Medicare enrollment records show Amy Spencer reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Grand Rapids, MI 49503
- Reassigned Medicare billing, Michigan enrollment
- 2,446 clinicians in this Medicare group
Grand Rapids, MI 49503
- Reassigned Medicare billing, Michigan enrollment
- 405 clinicians in this Medicare group
Jackson, MI 49201
- Reassigned Medicare billing, Michigan enrollment
- 474 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.
Spectrum Health
Acute Care Hospitals · Grand Rapids, MIOther Providers at the Same Location NPPES 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
GRAND RAPIDS, MI 49503
GRAND RAPIDS, MI 49503
GRAND RAPIDS, MI 49503
GRAND RAPIDS, MI 49503
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 Amy Spencer's NPI number?
The NPI number for Amy Spencer is 1043489842. It was assigned to this individual provider in the NPPES registry on February 26, 2008.
Where is Amy Spencer located?
Amy Spencer practices at 221 Michigan St NE Ste 400, Grand Rapids, MI 49503. The listed phone number is (616) 486-9600.
What is Amy Spencer's specialty?
The primary specialty registered for this NPI is Surgery, specializing in Surgical Critical Care, with taxonomy code 2086S0102X.
Is Amy Spencer enrolled in Medicare?
Yes. Amy Spencer 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 Amy Spencer's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Amy Spencer reassigns Medicare benefits to 3 organizations: Spectrum Health Primary Care Partners (Grand Rapids, MI), Spectrum Health Hospitals (Grand Rapids, MI) and W.A. Foote Memorial Hospital, Inc (Jackson, 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 Amy Spencer's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Amy Spencer accept?
Health plans from Ambetter Health, Ambetter from Buckeye Health Plan, Ambetter from Meridian and Priority Health list Amy Spencer 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 Amy Spencer affiliated with any hospitals?
According to CMS data, Amy Spencer is affiliated with Spectrum Health.
When was this NPI record last updated?
The NPPES record for Amy Spencer was last updated on March 2, 2021. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 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.
# Dr. Amy Riley Spencer, MD · NPI 1043489842
Surgical Critical Care physician in Grand Rapids, Michigan. Individual provider, active in the CMS NPPES registry since February 26, 2008.
## Identity
- **NPI:** 1043489842 (Entity type: Individual)
- **Enumerated:** February 26, 2008
- **Primary specialty:** Surgery - Surgical Critical Care · taxonomy 2086S0102X
- **State license:** 4301088136 (Michigan)
- **Sole proprietor:** No
## Practice location
- **Address:** 221 MICHIGAN ST NE STE 400, Grand Rapids, MI 49503-2543
- **Phone:** (616) 486-9600
## 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:** 3 organizations under Medicare reassignment (form CMS-855R): Spectrum Health Primary Care Partners (NPI 1689499667, Grand Rapids, MI); Spectrum Health Hospitals (NPI 1558407189, Grand Rapids, MI); W.A. Foote Memorial Hospital, Inc (NPI 1073051199, Jackson, MI) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2006
## Record status
- **NPPES last updated:** March 2, 2021
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Source: [NPI Profile](https://npiprofile.com/npi/1043489842) · Data from the CMS NPPES public registry.