MRS. DIANE L GEISEN M.S.W., L.C.S.W.
NPI 1619062049
Social Worker in Great Falls, MT
About Mrs. Diane L Geisen M.s.w., L.c.s.w. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MRS. DIANE L GEISEN M.S.W., L.C.S.W. (NPI 1619062049) is an individual social worker in Great Falls, Montana, licensed in Montana (639 LCSW) and active in the NPI registry since October 2006. She is enrolled in Medicare PECOS and is a graduate of Other (1984).
NPPES Registry Identity
Specialties & Licenses
Other Names 1
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
Mrs. Diane L Geisen M.s.w., L.c.s.w. 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 Reassignment
Medicare enrollment records show Diane Geisen reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Salina, KS 67401
- Reassigned Medicare billing, Kansas enrollment
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 2
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.
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 Diane Geisen's NPI number?
The NPI number for Diane Geisen is 1619062049. It was assigned to this individual provider in the NPPES registry on October 3, 2006. The provider is also known as Miss Diane L Dreese M.S.W., L.C.S.W..
Where is Diane Geisen located?
Diane Geisen practices at 2211 5th Ave N, Great Falls, MT 59401. The listed phone number is (406) 452-6655.
What is Diane Geisen's specialty?
The primary specialty registered for this NPI is Social Worker with taxonomy code 104100000X.
Is Diane Geisen enrolled in Medicare?
Yes. Diane Geisen 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 organization bills Medicare for Diane Geisen's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Diane Geisen reassigns Medicare benefits to Diane L Geisen, Lscsw, LLC (Salina, KS). The 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 Diane Geisen's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Diane Geisen accept?
Health plans from Ambetter Health, Ambetter Health of Delaware, Ambetter from Sunflower Health Plan, Ambetter of Oklahoma and Blue Cross and Blue Shield of Kansas, Inc. and 2 other insurers list Diane Geisen 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 Diane Geisen was last updated on March 24, 2008. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 18 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.
# Mrs. Diane L Geisen, M.S.W., L.C.S.W. · NPI 1619062049
Social Worker provider in Great Falls, Montana. Individual provider, active in the CMS NPPES registry since October 3, 2006.
## Identity
- **NPI:** 1619062049 (Entity type: Individual)
- **Enumerated:** October 3, 2006
- **Primary specialty:** Social Worker · taxonomy 104100000X
- **State license:** 639 LCSW (Montana)
- **Sole proprietor:** No
## Practice location
- **Address:** 2211 5TH AVE N, Great Falls, MT 59401
- **Phone:** (406) 452-6655 · **Fax:** (406) 452-6561
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment
- **Bills Medicare through:** Diane L Geisen, Lscsw, LLC (NPI 1962961540, Salina, KS), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 1984
## Record status
- **NPPES last updated:** March 24, 2008
- **Other identifiers:** Medicaid 0503642 (MT)
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Source: [NPI Profile](https://npiprofile.com/npi/1619062049) · Data from the CMS NPPES public registry.