MARGARET HARTMANN LMSW
NPI 1831554740
Social Worker in Kalkaska, MI
About Margaret Hartmann Lmsw NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MARGARET HARTMANN LMSW (NPI 1831554740) is an individual social worker in Kalkaska, Michigan, licensed in Michigan (6801098412) and active in the NPI registry since December 2015. She is enrolled in Medicare PECOS and is a graduate of Other (2015).
NPPES Registry Identity
Specialties & Licenses
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
Margaret Hartmann Lmsw 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 Margaret Hartmann reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Kalkaska, MI 49646
- Reassigned Medicare billing, Michigan enrollment
Traverse City, MI 49686
- Reassigned Medicare billing, Michigan enrollment
- Also billed through NPI 1386672665 (Michigan)
- 492 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.
Other Providers at the Same Location NPPES
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
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 Margaret Hartmann's NPI number?
The NPI number for Margaret Hartmann is 1831554740. It was assigned to this individual provider in the NPPES registry on December 18, 2015.
Where is Margaret Hartmann located?
Margaret Hartmann practices at 2469 Beebe Rd, Kalkaska, MI 49646. The listed phone number is (231) 676-7913.
What is Margaret Hartmann's specialty?
The primary specialty registered for this NPI is Social Worker with taxonomy code 104100000X.
Is Margaret Hartmann enrolled in Medicare?
Yes. Margaret Hartmann 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 Margaret Hartmann's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Margaret Hartmann reassigns Medicare benefits to 2 organizations: Begin Again Counseling, PLLC (Kalkaska, MI) and Munson Medical Center (Traverse City, 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 Margaret Hartmann's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Margaret Hartmann accept?
Health plans from Ambetter Health, Ambetter from Buckeye Health Plan, Ambetter from Meridian, Blue Care Network of Michigan and Blue Cross Blue Shield of Michigan Mutual Insurance Company and 1 other insurer list Margaret Hartmann 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 Margaret Hartmann was last updated on December 13, 2022. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 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.
# Margaret Hartmann, LMSW · NPI 1831554740
Social Worker provider in Kalkaska, Michigan. Individual provider, active in the CMS NPPES registry since December 18, 2015.
## Identity
- **NPI:** 1831554740 (Entity type: Individual)
- **Enumerated:** December 18, 2015
- **Primary specialty:** Social Worker · taxonomy 104100000X
- **State license:** 6801098412 (Michigan)
- **Sole proprietor:** Yes
## Practice location
- **Address:** 2469 BEEBE RD, Kalkaska, MI 49646-8919
- **Phone:** (231) 676-7913
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment
- **Bills Medicare through:** 2 organizations under Medicare reassignment (form CMS-855R): Begin Again Counseling, PLLC (NPI 1902545635, Kalkaska, MI); Munson Medical Center (NPI 1306277553, Traverse City, MI) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2015
## Record status
- **NPPES last updated:** December 13, 2022
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Source: [NPI Profile](https://npiprofile.com/npi/1831554740) · Data from the CMS NPPES public registry.