DAVID JOSEPH STOY MD
NPI 1922397686
Internal Medicine - Nephrology in Saint Paul, MN
About David Joseph Stoy Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DAVID JOSEPH STOY MD (NPI 1922397686) is an individual nephrology provider in Saint Paul, Minnesota, licensed in Minnesota (56432) and active in the NPI registry since April 2011. He is enrolled in Medicare PECOS, is affiliated with Cambridge Medical Center, and is a graduate of Loyola University Of Chicago, Stritch School Of Medicine (2010).
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
David Joseph Stoy 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
5Medicare enrollment records show David Stoy reassigns Medicare billing to 5 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
St Paul, MN 55102
- Reassigned Medicare billing, Minnesota and Wisconsin enrollments
- Also billed through NPI 1447550702 (Wisconsin), NPI 1407395247 (Wisconsin)
- 2,609 clinicians in this Medicare group
Hudson, WI 54016
- Reassigned Medicare billing, Wisconsin enrollment
- 158 clinicians in this Medicare group
New Richmond, WI 54017
- Reassigned Medicare billing, Wisconsin enrollment
- 357 clinicians in this Medicare group
Amery, WI 54001
- Reassigned Medicare billing, Wisconsin enrollment
- 348 clinicians in this Medicare group
Bloomer, WI 54724
- Reassigned Medicare billing, Wisconsin enrollment
- Also billed through NPI 1912958026 (Wisconsin)
- 427 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 5
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Cambridge Medical Center
Acute Care Hospitals · Cambridge, MNAllina United Hospital
Acute Care Hospitals · Saint Paul, MNAbbott Northwestern Hospital
Acute Care Hospitals · Minneapolis, MNAllina Health Faribault Medical Center
Acute Care Hospitals · Faribault, MNMercy Hospital
Acute Care Hospitals · Coon Rapids, MNPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 55102 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Referred Medical Equipment & Supplies CMS DME claims 4
Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.
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.
SAINT PAUL, MN 55102
SAINT PAUL, MN 55102
SAINT PAUL, MN 55102
SAINT PAUL, MN 55102
SAINT PAUL, MN 55102
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 David Stoy's NPI number?
The NPI number for David Stoy is 1922397686. It was assigned to this individual provider in the NPPES registry on April 4, 2011.
Where is David Stoy located?
David Stoy practices at 225 Smith Ave N Ste 300, Saint Paul, MN 55102. The listed phone number is (651) 241-5000.
What is David Stoy's specialty?
The primary specialty registered for this NPI is Internal Medicine, specializing in Nephrology, with taxonomy code 207RN0300X.
Is David Stoy enrolled in Medicare?
Yes. David Stoy 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 David Stoy's services?
According to the CMS Revalidation Reassignment List (October 2026 release), David Stoy reassigns Medicare benefits to 5 organizations: Allina Health System (St Paul, MN), Hudson Hospital, Inc. (Hudson, WI), Westfields Hospital, Inc. (New Richmond, WI), Amery Regional Medical Center, Inc. (Amery, WI) and Mayo Clinic Health System-Northwest Wisconsin Region, Inc. (Bloomer, WI). 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 David Stoy's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does David Stoy accept?
Health plans from HealthPartners list David Stoy 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 David Stoy affiliated with any hospitals?
According to CMS data, David Stoy is affiliated with Cambridge Medical Center, Allina United Hospital, Abbott Northwestern Hospital, Allina Health Faribault Medical Center and Mercy Hospital.
When was this NPI record last updated?
The NPPES record for David Stoy was last updated on August 11, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 months 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.
# David Joseph Stoy, MD · NPI 1922397686
Nephrology physician in Saint Paul, Minnesota. Individual provider, active in the CMS NPPES registry since April 4, 2011.
## Identity
- **NPI:** 1922397686 (Entity type: Individual)
- **Enumerated:** April 4, 2011
- **Primary specialty:** Internal Medicine - Nephrology · taxonomy 207RN0300X
- **State license:** 56432 (Minnesota)
- **Sole proprietor:** No
## Practice location
- **Address:** 225 SMITH AVE N STE 300, Saint Paul, MN 55102-2592
- **Phone:** (651) 241-5000
## 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:** 5 organizations under Medicare reassignment (form CMS-855R): Allina Health System (NPI 1053617795, St Paul, MN); Hudson Hospital, Inc. (NPI 1255532875, Hudson, WI); Westfields Hospital, Inc. (NPI 1881640183, New Richmond, WI); Amery Regional Medical Center, Inc. (NPI 1093763518, Amery, WI); Mayo Clinic Health System-Northwest Wisconsin Region, Inc. (NPI 1700837812, Bloomer, WI) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Loyola University Of Chicago, Stritch School Of Medicine, class of 2010
## Record status
- **NPPES last updated:** August 11, 2026
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Source: [NPI Profile](https://npiprofile.com/npi/1922397686) · Data from the CMS NPPES public registry.