GRETCHEN LYNN CHASE-REY CNM
NPI 1750789715
Advanced Practice Midwife in Great Barrington, MA
About Gretchen Lynn Chase-rey Cnm NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
GRETCHEN LYNN CHASE-REY CNM (NPI 1750789715) is an individual advanced practice midwife in Great Barrington, Massachusetts, licensed in Massachusetts (RN2339170) and active in the NPI registry since December 2014. She is enrolled in Medicare PECOS, is affiliated with Corewell Health Gerber Hospital, and is a graduate of Other (2014).
NPPES Registry Identity
Specialties & Licenses
Other Identifiers 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
Gretchen Lynn Chase-rey Cnm 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
8Medicare enrollment records show Gretchen Chase-rey reassigns Medicare billing to 8 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Lapeer, MI 48446
- Reassigned Medicare billing, Michigan enrollment
- 467 clinicians in this Medicare group
Greenville, MI 48838
- Reassigned Medicare billing, Michigan enrollment
- 242 clinicians in this Medicare group
Hastings, MI 49058
- Reassigned Medicare billing, Michigan enrollment
- Medicare enrollment name: Pennock Hospital
- 184 clinicians in this Medicare group
Big Rapids, MI 49307
- Reassigned Medicare billing, Michigan enrollment
- 151 clinicians in this Medicare group
Grand Rapids, MI 49546
- 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
Grant, MI 49327
- Reassigned Medicare billing, Michigan enrollment
- 180 clinicians in this Medicare group
Ludington, MI 49431
- Reassigned Medicare billing, Michigan enrollment
- 168 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.
Corewell Health Gerber Hospital
Critical Access Hospitals · Fremont, MIPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 01230 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Other Providers at the Same Location NPPES 3
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
GREAT BARRINGTON, MA 01230
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 Gretchen Chase-rey's NPI number?
The NPI number for Gretchen Chase-rey is 1750789715. It was assigned to this individual provider in the NPPES registry on December 8, 2014.
Where is Gretchen Chase-rey located?
Gretchen Chase-rey practices at 780 Main Street, Great Barrington, MA 01230. The listed phone number is (413) 528-1470.
What is Gretchen Chase-rey's specialty?
The primary specialty registered for this NPI is Advanced Practice Midwife with taxonomy code 367A00000X.
Is Gretchen Chase-rey enrolled in Medicare?
Yes. Gretchen Chase-rey 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 Gretchen Chase-rey's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Gretchen Chase-rey reassigns Medicare benefits to 8 organizations: Hurley Medical Center (Lapeer, MI), Spectrum Health United (Greenville, MI), Pennock Hospital Board Of Trustees (Hastings, MI), Mecosta County Medical Center (Big Rapids, MI), Spectrum Health Primary Care Partners (Grand Rapids, MI) and 3 more organizations, listed in the Medicare section above. 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 Gretchen Chase-rey's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Gretchen Chase-rey accept?
Health plans from Ambetter Health, Ambetter from Buckeye Health Plan, Ambetter from Meridian, McLaren Health Plan Community and Priority Health list Gretchen Chase-rey 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 Gretchen Chase-rey affiliated with any hospitals?
According to CMS data, Gretchen Chase-rey is affiliated with Corewell Health Gerber Hospital.
When was this NPI record last updated?
The NPPES record for Gretchen Chase-rey was last updated on September 14, 2020. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 6 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.
# Gretchen Lynn Chase-Rey, CNM · NPI 1750789715
Advanced Practice Midwife physician in Great Barrington, Massachusetts. Individual provider, active in the CMS NPPES registry since December 8, 2014.
## Identity
- **NPI:** 1750789715 (Entity type: Individual)
- **Enumerated:** December 8, 2014
- **Primary specialty:** Advanced Practice Midwife · taxonomy 367A00000X
- **State license:** RN2339170 (Massachusetts)
- **Sole proprietor:** No
## Practice location
- **Address:** 780 MAIN STREET, Great Barrington, MA 01230
- **Phone:** (413) 528-1470 · **Fax:** (413) 528-3167
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment
- **Bills Medicare through:** 8 organizations under Medicare reassignment (form CMS-855R): Hurley Medical Center (NPI 1003271792, Lapeer, MI); Spectrum Health United (NPI 1063781342, Greenville, MI); Pennock Hospital Board Of Trustees (NPI 1841488178, Hastings, MI); Mecosta County Medical Center (NPI 1275866006, Big Rapids, MI); Spectrum Health Primary Care Partners (NPI 1528374683, Grand Rapids, MI); and 3 more · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2014
## Record status
- **NPPES last updated:** September 14, 2020
- **Other identifiers:** Medicaid 110159437A (MA)
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Source: [NPI Profile](https://npiprofile.com/npi/1750789715) · Data from the CMS NPPES public registry.