Siddharth Singh, D.O.

Primary specialty

Anesthesiology PhysicianTaxonomy code 207L00000X

License

20A15374 Issued in CA

Practice address

1000 Fivepoint
Irvine, CA 92618-2621

Phone

(888) 333-4673

NPI assigned

May 1, 2012

Sex

Male

Sole proprietor

No

Registry information is reported by the provider to CMS and is not verified. About this source

Specialties & licenses 1

Addresses

Electronic endpoints 1

Medicare fee-for-service enrollment

Enrolled in CA

Eligible to order & refer

• Part B services: Yes
• Medical equipment: Yes
• Home health: Yes
• Power mobility devices: Yes
• Hospice: Yes

Green means eligible to order or refer.

Enrollment records 1

Specialty

Anesthesiology

Education

Other, 2012

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Group practices

City of Hope Medical FoundationGroup PAC ID 3779751656, 964 clinicians

Socal Anesthesia Solutions IncGroup PAC ID 0042607426, 46 clinicians

Orange Coast Anesthesia IncGroup PAC ID 2466613591, 85 clinicians

Cep America - Anesthesia PCGroup PAC ID 3678897915, 849 clinicians

Sound Physicians Anesthesiology of California PCGroup PAC ID 4385027770, 35 clinicians

Darin Rentz DO PCGroup PAC ID 7315333853, 131 clinicians

Practice addresses (Care Compare)

Hospital & facility affiliations

• City of Hope Helford Clinical Research Hospital Hospital, Duarte, CA, CCN 050146
• Memorialcare Saddleback Medical Center Hospital, Laguna Hills, CA, CCN 050603
• Riverside Community Hospital Hospital, Riverside, CA, CCN 050022

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Osteopathy, Doctor of Medicine

State licenses

Practice roles

Locations

Interoperability endpoints

• Direct secure messaging: ssingh273780@cityofhope.direct-ci.com
• Direct secure messaging: ssingh853584@direct.memorialcare.org
• Direct secure messaging: ssingh1198948@direct.llu.edu
• Direct secure messaging: direct@cityofhope.direct-ci.com

Organizations this provider is connected to: Medicare benefit reassignments (the organization bills Medicare for this provider’s services), Care Compare group memberships and National Provider Directory roles.

• Cep America - Anesthesia, PC

  • Anesthesiology Physician
  • Walnut Creek, CA
  • NPI 1790401438
  Medicare reassignment Care Compare group NPD
• City of Hope Medical Foundation

  • Hematology & Oncology Physician
  • Duarte, CA
  • NPI 1871886366

  Anesthesiology

  Medicare reassignment Care Compare group NPD
• Darin Rentz DO PC

  • Anesthesiology Physician
  • Redlands, CA
  • NPI 1689321747
  Medicare reassignment Care Compare group NPD
• Orange Coast Anesthesia Inc

  • Anesthesiology Physician
  • Orange, CA
  • NPI 1508138256
  Medicare reassignment Care Compare group NPD
• Socal Anesthesia Solutions, Inc

  • Anesthesiology Physician
  • Los Angeles, CA
  • NPI 1407596901
  Medicare reassignment Care Compare group NPD
• Sound Physicians Anesthesiology of California PC

  • Anesthesiology Physician
  • Murrieta, CA
  • NPI 1699408229
  Medicare reassignment Care Compare group NPD
• Inland Anesthesia Partners, Inc

  • Anesthesiology Physician
  • Covina, CA
  • NPI 1962148882
  Medicare reassignment NPD
• Turiya Anesthesia of Citrus Valley

  • Anesthesiology Physician
  • Covina, CA
  • NPI 1659105815
  Medicare reassignment
• Cep America - Anesthesia PC

  • Anesthesiology Physician
  • Valencia, CA
  • NPI 1396423067
  NPD
• Cep America - Anesthesia PC

  • Anesthesiology Physician
  • Langhorne, PA
  • NPI 1093678229
  NPD

Hospitals and other facilities this clinician is affiliated with according to Medicare Care Compare.

• City of Hope National Medical Center

  • General Acute Care Hospital
  • Duarte, CA
  • NPI 1750358297
  Care Compare affiliation
• Riverside Healthcare System, L.P.

  • General Acute Care Hospital
  • Riverside, CA
  • NPI 1114971660
  Care Compare affiliation
• Saddleback Memorial Medical Center

  • General Acute Care Hospital
  • Laguna Hills, CA
  • NPI 1275576381
  Care Compare affiliation

The complete NPPES record for this NPI in the NPI Registry API format.

{
    "created_epoch": "1335830400000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1768435200000",
    "number": "1609134261",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "PO BOX 31309",
            "city": "LOS ANGELES",
            "state": "CA",
            "postal_code": "900310309",
            "telephone_number": "323-442-7400"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "1000 FIVEPOINT",
            "city": "IRVINE",
            "state": "CA",
            "postal_code": "926182621",
            "telephone_number": "888-333-4673"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "SINGH",
        "first_name": "SIDDHARTH",
        "credential": "D.O.",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2012-05-01",
        "last_updated": "2026-01-15",
        "certification_date": "2026-01-15",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207L00000X",
            "taxonomy_group": "",
            "desc": "Anesthesiology",
            "state": "CA",
            "license": "20A15374",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [
        {
            "endpointType": "DIRECT",
            "endpointTypeDescription": "Direct Messaging Address",
            "endpoint": "direct@cityofhope.direct-ci.com",
            "affiliation": "Y",
            "affiliationName": "CITY OF HOPE MEDICAL FOUNDATION",
            "use": "DIRECT",
            "useDescription": "Direct",
            "address_1": "1000 Fivepoint",
            "city": "Irvine",
            "state": "CA",
            "country_code": "US",
            "postal_code": "926182377",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "other_names": []
}

• Lilly Singh, M.D.
• Mandeep Kaur Singh, MD
• Rajan Singh
• Ramnik Singh, M.D.
• Samar Kaur Singh, MD
• Single Poke LLC
• Jonathan Singleton
• Whitney Ann Sippl, DPT, WCS, IBCLC
• Jericho Dylan Yasi Siquig
• Sirona Psychotherapy Licensed Clinical Social Worker Inc.

• Anesthesiology Physician in Irvine, CA
• Providers in Irvine, CA by specialty
• Anesthesiology Physician in California

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jan 15, 2026; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
• Medicare enrollment (CMS PECOS): enrollments, PAC IDs and benefit reassignments; Order and Referring.
• Medicare Care Compare (CMS): clinician profile, group practices, facility affiliations, MIPS scores and star ratings.
• National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.