KELSEY MARIE LEMMEN M.D.
NPI 1124689120
Internal Medicine - Rheumatology in Detroit, MI
About Kelsey Marie Lemmen M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
KELSEY MARIE LEMMEN M.D. (NPI 1124689120) is an individual rheumatology provider in Detroit, Michigan, licensed in Michigan (4301507251) and active in the NPI registry since June 2019. She is enrolled in Medicare PECOS, maintains a secondary practice location in Pittsburgh, and is a graduate of University Of Michigan Medical School (2019).
NPPES Registry Identity
Specialties & Licenses 2
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
Kelsey Marie Lemmen M.d. 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 Kelsey Lemmen reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Detroit, MI 48236
- Reassigned Medicare billing, Michigan enrollment
- 520 clinicians in this Medicare group
Detroit, MI 48202
- Reassigned Medicare billing, Michigan enrollment
- 1,886 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.
Areas of Expertise CMS Part B claims 4
Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 48236 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.
DETROIT, MI 48236
DETROIT, MI 48236
DETROIT, MI 48236
DETROIT, MI 48236
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 Kelsey Lemmen's NPI number?
The NPI number for Kelsey Lemmen is 1124689120. It was assigned to this individual provider in the NPPES registry on June 21, 2019.
Where is Kelsey Lemmen located?
Kelsey Lemmen practices at 22151 Moross Rd, Detroit, MI 48236. The listed phone number is (313) 343-4850.
What is Kelsey Lemmen's specialty?
The primary specialty registered for this NPI is Internal Medicine, specializing in Rheumatology, with taxonomy code 207RR0500X.
Is Kelsey Lemmen enrolled in Medicare?
Yes. Kelsey Lemmen 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 Kelsey Lemmen's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Kelsey Lemmen reassigns Medicare benefits to 2 organizations: Henry Ford Health St. John Hospital (Detroit, MI) and Henry Ford Health System (Detroit, 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 Kelsey Lemmen's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Kelsey Lemmen accept?
Health plans from Blue Care Network of Michigan and Blue Cross Blue Shield of Michigan Mutual Insurance Company list Kelsey Lemmen 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.
When was this NPI record last updated?
The NPPES record for Kelsey Lemmen was last updated on June 12, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 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.
# Kelsey Marie Lemmen, M.D. · NPI 1124689120
Rheumatology physician in Detroit, Michigan. Individual provider, active in the CMS NPPES registry since June 21, 2019.
## Identity
- **NPI:** 1124689120 (Entity type: Individual)
- **Enumerated:** June 21, 2019
- **Primary specialty:** Internal Medicine - Rheumatology · taxonomy 207RR0500X
- **State license:** 4301507251 (Michigan)
- **Sole proprietor:** No
## Practice location
- **Address:** 22151 MOROSS RD, Detroit, MI 48236-2167
- **Phone:** (313) 343-4850
## 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): Henry Ford Health St. John Hospital (NPI 1114366333, Detroit, MI); Henry Ford Health System (NPI 1528142858, Detroit, MI) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** University Of Michigan Medical School, class of 2019
## Record status
- **NPPES last updated:** June 12, 2026
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Source: [NPI Profile](https://npiprofile.com/npi/1124689120) · Data from the CMS NPPES public registry.