RYAN MUI DO
NPI 1447817911
Internal Medicine - Gastroenterology in Lansing, MI
About Ryan Mui Do NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
RYAN MUI DO (NPI 1447817911) is an individual gastroenterology provider in Lansing, Michigan, licensed in Michigan (5101028670) and active in the NPI registry since May 2019. He is enrolled in Medicare PECOS, is affiliated with Sparrow Carson Hospital, and is a graduate of Michigan State University College Of Osteopathic Medicine (2019).
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
Ryan Mui Do 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
4Medicare enrollment records show Ryan Mui reassigns Medicare billing to 4 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Lansing, MI 48915
- Reassigned Medicare billing, Michigan enrollment
- 84 clinicians in this Medicare group
Portland, MI 48875
- Reassigned Medicare billing, Michigan enrollment
- 317 clinicians in this Medicare group
Carson City, MI 48811
- Reassigned Medicare billing, Michigan enrollment
- 22 clinicians in this Medicare group
Petoskey, MI 49770
- Reassigned Medicare billing, Michigan enrollment
- 149 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 2
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Sparrow Carson Hospital
Acute Care Hospitals · Carson City, MIEdward W Sparrow Hospital
Acute Care Hospitals · Lansing, MIPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 48910 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 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
LANSING, MI 48910
LANSING, MI 48910
LANSING, MI 48910
LANSING, MI 48910
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 Ryan Mui's NPI number?
The NPI number for Ryan Mui is 1447817911. It was assigned to this individual provider in the NPPES registry on May 21, 2019.
Where is Ryan Mui located?
Ryan Mui practices at 401 W Greenlawn Ave, Lansing, MI 48910. The listed phone number is (517) 975-6000.
What is Ryan Mui's specialty?
The primary specialty registered for this NPI is Internal Medicine, specializing in Gastroenterology, with taxonomy code 207RG0100X.
Is Ryan Mui enrolled in Medicare?
Yes. Ryan Mui 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 Ryan Mui's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Ryan Mui reassigns Medicare benefits to 4 organizations: Edward W. Sparrow Hospital Association (Lansing, MI), Sparrow Ionia Hospital (Portland, MI), Sparrow Carson Hospital (Carson City, MI) and Mclaren Northern Michigan (Petoskey, 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 Ryan Mui's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Ryan Mui accept?
Health plans from Blue Care Network of Michigan, Blue Cross Blue Shield of Michigan Mutual Insurance Company and Priority Health list Ryan Mui 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 Ryan Mui affiliated with any hospitals?
According to CMS data, Ryan Mui is affiliated with Sparrow Carson Hospital and Edward W Sparrow Hospital.
When was this NPI record last updated?
The NPPES record for Ryan Mui was last updated on August 12, 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.
# Ryan Mui, DO · NPI 1447817911
Gastroenterology physician in Lansing, Michigan. Individual provider, active in the CMS NPPES registry since May 21, 2019.
## Identity
- **NPI:** 1447817911 (Entity type: Individual)
- **Enumerated:** May 21, 2019
- **Primary specialty:** Internal Medicine - Gastroenterology · taxonomy 207RG0100X
- **State license:** 5101028670 (Michigan)
- **Sole proprietor:** No
## Practice location
- **Address:** 401 W GREENLAWN AVE, Lansing, MI 48910-2819
- **Phone:** (517) 975-6000
## 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:** 4 organizations under Medicare reassignment (form CMS-855R): Edward W. Sparrow Hospital Association (NPI 1033165790, Lansing, MI); Sparrow Ionia Hospital (NPI 1295801108, Portland, MI); Sparrow Carson Hospital (NPI 1396789798, Carson City, MI); Mclaren Northern Michigan (NPI 1760736094, Petoskey, MI) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Michigan State University College Of Osteopathic Medicine, class of 2019
## Record status
- **NPPES last updated:** August 12, 2026
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Source: [NPI Profile](https://npiprofile.com/npi/1447817911) · Data from the CMS NPPES public registry.