DR. SIVA VENU NATARAJAN M.D.
NPI 1003127234
Anesthesiology in Visalia, CA
About Dr. Siva Venu Natarajan M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. SIVA VENU NATARAJAN M.D. (NPI 1003127234) is an individual anesthesiology provider in Visalia, California, licensed in California (A107471) and active in the NPI registry since June 2010. He is enrolled in Medicare PECOS and is a graduate of Other (2004).
NPPES Registry Identity
Specialties & Licenses
Other Identifiers 2
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. Siva Venu Natarajan M.d. 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
10Medicare enrollment records show Siva Natarajan reassigns Medicare billing to 10 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Manteca, CA 95336
- Reassigned Medicare billing, California enrollment
- 534 clinicians in this Medicare group
French Camp, CA 95231
- Reassigned Medicare billing, California enrollment
- 512 clinicians in this Medicare group
Los Alamitos, CA 90720
- Reassigned Medicare billing, California enrollment
- 63 clinicians in this Medicare group
Anaheim, CA 92801
- Reassigned Medicare billing, California enrollment
- 73 clinicians in this Medicare group
San Bernardino, CA 92404
- Reassigned Medicare billing, California enrollment
- 270 clinicians in this Medicare group
Huntington Beach, CA 92647
- Reassigned Medicare billing, California enrollment
- 9 clinicians in this Medicare group
Corona, CA 92882
- Reassigned Medicare billing, California enrollment
- 70 clinicians in this Medicare group
Riverside, CA 92506
- Reassigned Medicare billing, California enrollment
- 27 clinicians in this Medicare group
Redlands, CA 92373
- Reassigned Medicare billing, California enrollment
- 241 clinicians in this Medicare group
- Reassigned Medicare billing, California enrollment
- 420 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.
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 Siva Natarajan's NPI number?
The NPI number for Siva Natarajan is 1003127234. It was assigned to this individual provider in the NPPES registry on June 22, 2010.
Where is Siva Natarajan located?
Siva Natarajan practices at 3105 W Perez Ave, Visalia, CA 93291. The listed phone number is (310) 422-6851.
What is Siva Natarajan's specialty?
The primary specialty registered for this NPI is Anesthesiology with taxonomy code 207L00000X.
Is Siva Natarajan enrolled in Medicare?
Yes. Siva Natarajan 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 Siva Natarajan's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Siva Natarajan reassigns Medicare benefits to 10 organizations: County Of San Joaquin (Manteca, CA), San Joaquin Faculty Medical Group (French Camp, CA), Talbert Anesthesia Group Incorporated (Los Alamitos, CA), Anesthesia Specialists Of Orange County, Inc. (Anaheim, CA), Palm Springs Anesthesia Services, PC (San Bernardino, CA) and 5 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 Siva Natarajan'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 Siva Natarajan was last updated on April 3, 2013. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 13 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.
# Dr. Siva Venu Natarajan, M.D. · NPI 1003127234
Anesthesiology physician in Visalia, California. Individual provider, active in the CMS NPPES registry since June 22, 2010.
## Identity
- **NPI:** 1003127234 (Entity type: Individual)
- **Enumerated:** June 22, 2010
- **Primary specialty:** Anesthesiology · taxonomy 207L00000X
- **State license:** A107471 (California)
- **Sole proprietor:** Yes
## Practice location
- **Address:** 3105 W PEREZ AVE, Visalia, CA 93291-8543
- **Phone:** (310) 422-6851
## 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:** 10 organizations under Medicare reassignment (form CMS-855R): County Of San Joaquin (NPI 1417407636, Manteca, CA); San Joaquin Faculty Medical Group (NPI 1225063761, French Camp, CA); Talbert Anesthesia Group Incorporated (NPI 1144626714, Los Alamitos, CA); Anesthesia Specialists Of Orange County, Inc. (NPI 1134311319, Anaheim, CA); Palm Springs Anesthesia Services, PC (NPI 1083928501, San Bernardino, CA); and 5 more · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2004
## Record status
- **NPPES last updated:** April 3, 2013
- **Other identifiers:** Other ZZZ16448Z (CA); Other FQ210Z (CA)
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Source: [NPI Profile](https://npiprofile.com/npi/1003127234) · Data from the CMS NPPES public registry.