DR. KATHLEEN M LEWISON MD
NPI 1508981663
Obstetrics & Gynecology - Obstetrics in Whitefish, MT
About Dr. Kathleen M Lewison Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. KATHLEEN M LEWISON MD (NPI 1508981663) is an individual obstetrics provider in Whitefish, Montana, licensed in Montana (11793) and active in the NPI registry since March 2007. She is enrolled in Medicare PECOS, is affiliated with Logan Health Medical Center, and maintains 2 additional practice locations.
NPPES Registry Identity
Specialties & Licenses 2
Secondary Practice Locations 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
Dr. Kathleen M Lewison 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 Kathleen Lewison reassigns Medicare billing to 5 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Whitefish, MT 59937
- Reassigned Medicare billing, Montana enrollment
- 5 clinicians in this Medicare group
Whitefish, MT 59937
- Reassigned Medicare billing, Montana enrollment
- Also billed through NPI 1396710851 (Montana)
- 66 clinicians in this Medicare group
Whitefish, MT 59937
- Reassigned Medicare billing, Montana enrollment
- 483 clinicians in this Medicare group
Boulder, MT 59632
- Reassigned Medicare billing, Montana enrollment
- 278 clinicians in this Medicare group
Greenville, SC 29607
- Reassigned Medicare billing, California enrollment
- Medicare enrollment name: Obhg California Pc
- 711 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 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.
Hospital Affiliations CMS Care Compare 2
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Logan Health Medical Center
Acute Care Hospitals · Kalispell, MTLogan Health - Whitefish
Critical Access Hospitals · Whitefish, MTPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 59937 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 6
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 Kathleen Lewison's NPI number?
The NPI number for Kathleen Lewison is 1508981663. It was assigned to this individual provider in the NPPES registry on March 20, 2007.
Where is Kathleen Lewison located?
Kathleen Lewison practices at 2002 Hospital Way, Whitefish, MT 59937. The listed phone number is (406) 862-6436.
What is Kathleen Lewison's specialty?
The primary specialty registered for this NPI is Obstetrics & Gynecology, specializing in Obstetrics, with taxonomy code 207VX0000X.
Is Kathleen Lewison enrolled in Medicare?
Yes. Kathleen Lewison 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.
What insurance does Kathleen Lewison accept?
Health plans from Blue Cross and Blue Shield of Montana, Mountain Health CO-OP, PacificSource Health Plans and Providence Health Plan list Kathleen Lewison 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 Kathleen Lewison affiliated with any hospitals?
According to CMS data, Kathleen Lewison is affiliated with Logan Health Medical Center and Logan Health - Whitefish.
When was this NPI record last updated?
The NPPES record for Kathleen Lewison was last updated on January 14, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 9 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.
# Dr. Kathleen M Lewison, MD · NPI 1508981663
Obstetrics physician in Whitefish, Montana. Individual provider, active in the CMS NPPES registry since March 20, 2007.
## Identity
- **NPI:** 1508981663 (Entity type: Individual)
- **Enumerated:** March 20, 2007
- **Primary specialty:** Obstetrics & Gynecology - Obstetrics · taxonomy 207VX0000X
- **State license:** 11793 (Montana)
- **Sole proprietor:** No
## Practice location
- **Address:** 2002 HOSPITAL WAY, Whitefish, MT 59937-7858
- **Phone:** (406) 862-6436 · **Fax:** (406) 862-9978
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Medical school:** University Of Maryland School Of Medicine, class of 1993
## Record status
- **NPPES last updated:** January 14, 2026
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Source: [NPI Profile](https://npiprofile.com/npi/1508981663) · Data from the CMS NPPES public registry.