JOHN M. WIESENFARTH MD
NPI 1659459360
Emergency Medicine in Sacramento, CA
About John M. Wiesenfarth Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
JOHN M. WIESENFARTH MD (NPI 1659459360) is an individual emergency medicine provider in Sacramento, California, licensed in California (A61978) and active in the NPI registry since November 2006. He is enrolled in Medicare PECOS and is a graduate of R Franklin University Of Med & Sci/chicago Medical School (1994).
NPPES Registry Identity
Specialties & Licenses
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
John M. Wiesenfarth 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
2Medicare enrollment records show John Wiesenfarth reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Stockton, CA 95210
- Reassigned Medicare billing, California enrollment
- 20,078 clinicians in this Medicare group
Honolulu, HI 96819
- Reassigned Medicare billing, Hawaii enrollment
- 1,187 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.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 95825 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.
SACRAMENTO, CA 95825
SACRAMENTO, CA 95825
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 Wiesenfarth's NPI number?
The NPI number for John Wiesenfarth is 1659459360. It was assigned to this individual provider in the NPPES registry on November 1, 2006.
Where is John Wiesenfarth located?
John Wiesenfarth practices at 2025 Morse Ave, Sacramento, CA 95825. The listed phone number is (916) 973-5000.
What is John Wiesenfarth's specialty?
The primary specialty registered for this NPI is Emergency Medicine with taxonomy code 207P00000X.
Is John Wiesenfarth enrolled in Medicare?
Yes. John Wiesenfarth 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 Wiesenfarth's services?
According to the CMS Revalidation Reassignment List (October 2026 release), John Wiesenfarth reassigns Medicare benefits to 2 organizations: Permanente Medical Group Inc (Stockton, CA) and Hawaii Permanente Medical Group Inc (Honolulu, HI). 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 Wiesenfarth's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does John Wiesenfarth accept?
Health plans from Kaiser Permanente list John Wiesenfarth 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 John Wiesenfarth was last updated on December 22, 2021. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 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 M. Wiesenfarth, MD · NPI 1659459360
Emergency Medicine physician in Sacramento, California. Individual provider, active in the CMS NPPES registry since November 1, 2006.
## Identity
- **NPI:** 1659459360 (Entity type: Individual)
- **Enumerated:** November 1, 2006
- **Primary specialty:** Emergency Medicine · taxonomy 207P00000X
- **State license:** A61978 (California)
- **Sole proprietor:** No
## Practice location
- **Address:** 2025 MORSE AVE, Sacramento, CA 95825-2115
- **Phone:** (916) 973-5000
## 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): Permanente Medical Group Inc (NPI 1548343510, Stockton, CA); Hawaii Permanente Medical Group Inc (NPI 1710945969, Honolulu, HI) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** R Franklin University Of Med & Sci/chicago Medical School, class of 1994
## Record status
- **NPPES last updated:** December 22, 2021
- **Other identifiers:** Medicaid 00A619780 (CA)
---
Source: [NPI Profile](https://npiprofile.com/npi/1659459360) · Data from the CMS NPPES public registry.