JOHN FREDERICK LEWISON MD
NPI 1497795678
Internal Medicine in South Lake Tahoe, CA
About John Frederick Lewison Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
JOHN FREDERICK LEWISON MD (NPI 1497795678) is an individual internal medicine provider in South Lake Tahoe, California, licensed in California (G146742) and active in the NPI registry since June 2006. He is enrolled in Medicare PECOS, is affiliated with St Peters Health, and maintains a secondary practice location in South Lake Tahoe.
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
John Frederick 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
9Medicare enrollment records show John Lewison reassigns Medicare billing to 9 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
South Lake Tahoe, CA 96150
- Reassigned Medicare billing, California enrollment
- 126 clinicians in this Medicare group
South Lake Tahoe, CA 96150
- Reassigned Medicare billing, California enrollment
- 100 clinicians in this Medicare group
San Jacinto, CA 92583
- Reassigned Medicare billing, California enrollment
- 93 clinicians in this Medicare group
Bullhead City, AZ 86442
- Reassigned Medicare billing, Arizona enrollment
- 117 clinicians in this Medicare group
Missoula, MT 59804
- Reassigned Medicare billing, Montana enrollment
- 155 clinicians in this Medicare group
Helena, MT 59601
- Reassigned Medicare billing, Montana enrollment
- 2 clinicians in this Medicare group
Helena, MT 59601
- Reassigned Medicare billing, Montana enrollment
- Medicare enrollment name: St Peters Health
- 304 clinicians in this Medicare group
Libby, MT 59923
- Reassigned Medicare billing, Montana enrollment
- Medicare enrollment name: St Johns Lutheran Hospital Inc
- 86 clinicians in this Medicare group
Columbia Falls, MT 59912
- Reassigned Medicare billing, Montana enrollment
- 3 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 6
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
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
St Peters Health
Acute Care Hospitals · Helena, MTPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 96150 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Medicare Quality Performance CMS QPP · MIPS
Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.
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.
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 John Lewison's NPI number?
The NPI number for John Lewison is 1497795678. It was assigned to this individual provider in the NPPES registry on June 7, 2006.
Where is John Lewison located?
John Lewison practices at 2170 South Ave, South Lake Tahoe, CA 96150. The listed phone number is (530) 541-3420.
What is John Lewison's specialty?
The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.
Is John Lewison enrolled in Medicare?
Yes. John 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.
Which organizations bill Medicare for John Lewison's services?
According to the CMS Revalidation Reassignment List (October 2026 release), John Lewison reassigns Medicare benefits to 9 organizations: Barton Healthcare System (South Lake Tahoe, CA), Tahoe Carson Valley Medical Group Inc (South Lake Tahoe, CA), Dap Health, Inc. (San Jacinto, CA), Comprehensive Hospitalist Services Of Arizona, LLC (Bullhead City, AZ), Cogent Healthcare Of Montana P C (Missoula, MT) and 4 more organizations, listed in the Medicare section above. 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 John Lewison's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does John Lewison accept?
Health plans from Blue Cross and Blue Shield of Montana, Mountain Health CO-OP, PacificSource Health Plans and Providence Health Plan list John 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 John Lewison affiliated with any hospitals?
According to CMS data, John Lewison is affiliated with St Peters Health.
When was this NPI record last updated?
The NPPES record for John Lewison was last updated on March 17, 2018. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 8 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.
# John Frederick Lewison, MD · NPI 1497795678
Internal Medicine physician in South Lake Tahoe, California. Individual provider, active in the CMS NPPES registry since June 7, 2006.
## Identity
- **NPI:** 1497795678 (Entity type: Individual)
- **Enumerated:** June 7, 2006
- **Primary specialty:** Internal Medicine · taxonomy 207R00000X
- **State license:** G146742 (California)
- **Sole proprietor:** No
## Practice location
- **Address:** 2170 SOUTH AVE, South Lake Tahoe, CA 96150-7026
- **Phone:** (530) 541-3420
## 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:** 9 organizations under Medicare reassignment (form CMS-855R): Barton Healthcare System (NPI 1003867565, South Lake Tahoe, CA); Tahoe Carson Valley Medical Group Inc (NPI 1508865528, South Lake Tahoe, CA); Dap Health, Inc. (NPI 1598180101, San Jacinto, CA); Comprehensive Hospitalist Services Of Arizona, LLC (NPI 1265823215, Bullhead City, AZ); Cogent Healthcare Of Montana P C (NPI 1053569525, Missoula, MT); and 4 more · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** University Of Maryland School Of Medicine, class of 1993
## Record status
- **NPPES last updated:** March 17, 2018
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Source: [NPI Profile](https://npiprofile.com/npi/1497795678) · Data from the CMS NPPES public registry.