WEI SONG MD
NPI 1083879001
Family Medicine in Mason City, IA
About Wei Song Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
WEI SONG MD (NPI 1083879001) is an individual family medicine provider in Mason City, Iowa, licensed in Iowa (R8331) and active in the NPI registry since July 2008. He is enrolled in Medicare PECOS and is a graduate of Other (1994).
NPPES Registry Identity
Specialties & Licenses
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
Wei Song 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 Reassignment
Medicare enrollment records show Wei Song reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Stockton, CA 95210
- Reassigned Medicare billing, California enrollment
- 20,078 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 50401 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 4
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
MASON CITY, IA 50401
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 Wei Song's NPI number?
The NPI number for Wei Song is 1083879001. It was assigned to this individual provider in the NPPES registry on July 21, 2008.
Where is Wei Song located?
Wei Song practices at 101 S Taylor Ave, Mason City, IA 50401. The listed phone number is (641) 422-7779.
What is Wei Song's specialty?
The primary specialty registered for this NPI is Family Medicine with taxonomy code 207Q00000X.
Is Wei Song enrolled in Medicare?
Yes. Wei Song 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 Wei Song's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Wei Song reassigns Medicare benefits to Permanente Medical Group Inc (Stockton, CA). 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 Wei Song's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
When was this NPI record last updated?
The NPPES record for Wei Song was last updated on December 20, 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.
# Wei Song, MD · NPI 1083879001
Family Medicine physician in Mason City, Iowa. Individual provider, active in the CMS NPPES registry since July 21, 2008.
## Identity
- **NPI:** 1083879001 (Entity type: Individual)
- **Enumerated:** July 21, 2008
- **Primary specialty:** Family Medicine · taxonomy 207Q00000X
- **State license:** R8331 (Iowa)
- **Sole proprietor:** No
## Practice location
- **Address:** 101 S TAYLOR AVE, Mason City, IA 50401-2849
- **Phone:** (641) 422-7779
## 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:** Permanente Medical Group Inc (NPI 1548343510, Stockton, CA), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 1994
## Record status
- **NPPES last updated:** December 20, 2021
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Source: [NPI Profile](https://npiprofile.com/npi/1083879001) · Data from the CMS NPPES public registry.