JIMMY O. SIO MD
NPI 1659448470
Internal Medicine in Bakersfield, CA
About Jimmy O. Sio Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
JIMMY O. SIO MD (NPI 1659448470) is an individual internal medicine provider in Bakersfield, California, licensed in California (G73168) and active in the NPI registry since November 2006. He is enrolled in Medicare PECOS and is a graduate of Emory University School Of Medicine (1985).
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
Jimmy O. Sio 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 Jimmy Sio reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Bakersfield, CA 93301
- Reassigned Medicare billing, California enrollment
- 5,228 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 93301 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.
BAKERSFIELD, CA 93301
BAKERSFIELD, CA 93301
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 Jimmy Sio's NPI number?
The NPI number for Jimmy Sio is 1659448470. It was assigned to this individual provider in the NPPES registry on November 29, 2006.
Where is Jimmy Sio located?
Jimmy Sio practices at 3733 San Dimas St, Bakersfield, CA 93301. The listed phone number is (800) 353-5400.
What is Jimmy Sio's specialty?
The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.
Is Jimmy Sio enrolled in Medicare?
Yes. Jimmy Sio 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 Jimmy Sio's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Jimmy Sio reassigns Medicare benefits to Southern California Permanente Medical Group (Bakersfield, 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 Jimmy Sio'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 Jimmy Sio was last updated on November 29, 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.
# Jimmy O. Sio, MD · NPI 1659448470
Internal Medicine physician in Bakersfield, California. Individual provider, active in the CMS NPPES registry since November 29, 2006.
## Identity
- **NPI:** 1659448470 (Entity type: Individual)
- **Enumerated:** November 29, 2006
- **Primary specialty:** Internal Medicine · taxonomy 207R00000X
- **State license:** G73168 (California)
- **Sole proprietor:** No
## Practice location
- **Address:** 3733 SAN DIMAS ST, Bakersfield, CA 93301-1407
- **Phone:** (800) 353-5400
## 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:** Southern California Permanente Medical Group (NPI 1861424376, Bakersfield, CA), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Emory University School Of Medicine, class of 1985
## Record status
- **NPPES last updated:** November 29, 2021
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Source: [NPI Profile](https://npiprofile.com/npi/1659448470) · Data from the CMS NPPES public registry.