SIDDHARTH SINGH D.O.
NPI 1609134261
Anesthesiology in Irvine, CA
About Siddharth Singh D.o. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
SIDDHARTH SINGH D.O. (NPI 1609134261) is an individual anesthesiology provider in Irvine, California, licensed in California (20A15374) and active in the NPI registry since May 2012. He is enrolled in Medicare PECOS and is a graduate of Other (2012).
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
Siddharth Singh D.o. 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
8Medicare enrollment records show Siddharth Singh reassigns Medicare billing to 8 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Laguna Hills, CA 92653
- Reassigned Medicare billing, California enrollment
- 833 clinicians in this Medicare group
Orange, CA 92869
- Reassigned Medicare billing, California enrollment
- 168 clinicians in this Medicare group
Covina, CA 91723
- Reassigned Medicare billing, California enrollment
- 25 clinicians in this Medicare group
Covina, CA 91723
- Reassigned Medicare billing, California enrollment
- 26 clinicians in this Medicare group
Murrieta, CA 92563
- Reassigned Medicare billing, California enrollment
- 137 clinicians in this Medicare group
Duarte, CA 91010
- Reassigned Medicare billing, California enrollment
- 1,335 clinicians in this Medicare group
Redlands, CA 92373
- Reassigned Medicare billing, California enrollment
- 241 clinicians in this Medicare group
Los Angeles, CA 90015
- Reassigned Medicare billing, California enrollment
- 76 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
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.
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.
IRVINE, CA 92618
IRVINE, CA 92618
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 Siddharth Singh's NPI number?
The NPI number for Siddharth Singh is 1609134261. It was assigned to this individual provider in the NPPES registry on May 1, 2012.
Where is Siddharth Singh located?
Siddharth Singh practices at 1000 Fivepoint, Irvine, CA 92618. The listed phone number is (888) 333-4673.
What is Siddharth Singh's specialty?
The primary specialty registered for this NPI is Anesthesiology with taxonomy code 207L00000X.
Is Siddharth Singh enrolled in Medicare?
Yes. Siddharth Singh 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 Siddharth Singh's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Siddharth Singh reassigns Medicare benefits to 8 organizations: Cep America - Anesthesia PC (Laguna Hills, CA), Orange Coast Anesthesia Inc (Orange, CA), Turiya Anesthesia Of Citrus Valley (Covina, CA), Inland Anesthesia Partners, Inc (Covina, CA), Sound Physicians Anesthesiology Of California PC (Murrieta, CA) and 3 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 Siddharth Singh'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 Siddharth Singh was last updated on January 15, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 9 months 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.
# Siddharth Singh, D.O. · NPI 1609134261
Anesthesiology physician in Irvine, California. Individual provider, active in the CMS NPPES registry since May 1, 2012.
## Identity
- **NPI:** 1609134261 (Entity type: Individual)
- **Enumerated:** May 1, 2012
- **Primary specialty:** Anesthesiology · taxonomy 207L00000X
- **State license:** 20A15374 (California)
- **Sole proprietor:** No
## Practice location
- **Address:** 1000 FIVEPOINT, Irvine, CA 92618-2621
- **Phone:** (888) 333-4673
## 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:** 8 organizations under Medicare reassignment (form CMS-855R): Cep America - Anesthesia PC (NPI 1861373631, Laguna Hills, CA); Orange Coast Anesthesia Inc (NPI 1508138256, Orange, CA); Turiya Anesthesia Of Citrus Valley (NPI 1659105815, Covina, CA); Inland Anesthesia Partners, Inc (NPI 1962148882, Covina, CA); Sound Physicians Anesthesiology Of California PC (NPI 1699408229, Murrieta, CA); and 3 more · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2012
## Record status
- **NPPES last updated:** January 15, 2026
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Source: [NPI Profile](https://npiprofile.com/npi/1609134261) · Data from the CMS NPPES public registry.