Individual provider Active NPI

Ajaypal Singh

  • Certified Registered Nurse Anesthetist
  • San Francisco, CA
National Provider Identifier
1982242228
Registry record updated Oct 15, 2025
On this page

Key facts

NPPES NPI Registry
Primary specialty
Certified Registered Nurse AnesthetistTaxonomy code 367500000X
License
NA95002428 Issued in CA
Practice address
521 Parnassus Ave
San Francisco, CA 94143-2206
Phone
(415) 514-3785
NPI assigned
Dec 17, 2019
Sex
Male
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on Oct 15, 2025

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

Specialties & licenses 3

Specialty (taxonomy)CodeLicenseStatePrimary
Certified Registered Nurse Anesthetist 367500000X NA95002428 CA Primary
Registered Nurse 163W00000X RN712350 PA
Certified Registered Nurse Anesthetist 367500000X 1033724 TX

Addresses

Primary practice location

521 Parnassus Ave
San Francisco, CA 94143-2206

Mailing address

PO Box 4439
Houston, TX 77210-4439
Phone (713) 792-2991

Other practice location 1

1515 Holcombe Blvd
Houston, TX 77030-4000
Phone (713) 792-6161

Other identifiers 3

IdentifierTypeStateIssuer
428409302OtherTXCSHCN MEDICAID
8PV117OtherTXBCBS
428409301MedicaidTX

Medicare participation

Medicare enrollment files
Medicare fee-for-service enrollment
Enrolled in CA

Enrollment records 1

Enrollment IDStateProvider typePAC IDDetails
I20250821001170 CA Practitioner - Certified Registered Nurse Anesthetist (Crna) 6103228457 Reassigns benefits to 5 organizations

Care Compare profile

Medicare Care Compare
Specialty
Certified Registered Nurse Anesthetist (Crna)
Education
Other, 2020
Medicare assignment
Accepts the Medicare-approved amount as payment in full
Group practices
University Anesthesia Medical GroupGroup PAC ID 2769370535, 402 clinicians

Practice addresses (Care Compare)

20998 Redwood Rd
Castro Valley, CA 94546-5918
Phone (510) 576-8500

505 Parnassus Ave
San Francisco, CA 94143-2204
Phone (415) 476-1000

Hospital & facility affiliations

Merit-based Incentive Payment System (MIPS)

Final score
84.29 of 100Reported as group
Quality
70.82
Promoting interoperability
100
Improvement activities
40
Cost
67.65

National Provider Directory

National Provider Directory
Medicare enrollment (NPD)
Enrolled
Credentials
Certified Registered Nurse

State licenses

LicenseStateTypeSpecialty
RN712350PAMDRegistered Nurse
NA95002428CAMDCertified Registered Nurse Anesthetist
1033724TXMDCertified Registered Nurse Anesthetist

Practice roles

OrganizationSpecialtyStatusNew patients
Sedaze Anesthesia Consultants a Professional Nursing Corporation Nurse Anesthetist, Certified Registered CurrentSince May 18, 2025 Accepting new patients
UCSF Medical Group Business Services CurrentSince Oct 13, 2025 Accepting new patients
University of California San Francisco Current Accepting new patients
University of California San Francisco CurrentSince Oct 13, 2025 Accepting new patients
University Anesthesia Medical Group CurrentSince Oct 13, 2025 Accepting new patients
University of California San Francisco CurrentSince Oct 13, 2025 Accepting new patients
Amsurg Oakland Anesthesia LP CurrentSince Jan 18, 2026 Accepting new patients
UCSF Medical Group Business Services CurrentSince Oct 13, 2025 Accepting new patients
University of California San Francisco Medical Center Past Accepting new patients
UCSF Medical Center Past Accepting new patients

Locations

20998 Redwood Rd
Castro Valley, CA 94546
Phone (510) 538-2828

300 Ogawa Plz
Ste 135
Oakland, CA 94612
Phone (510) 893-1600

2330 Post St
San Francisco, CA 94115
Phone (415) 502-4444

521 Parnassus Ave
San Francisco, CA 94143
Phone (415) 476-9035

505 Parnassus Ave
San Francisco, CA 94143
Phone (415) 476-9058

400 Parnassus Ave
#A632
San Francisco, CA 94143
Phone (415) 473-1000

Organizations & group practices 10

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.

Hospital & facility affiliations 1

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

NPI Registry JSON

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

{
    "created_epoch": "1576540800000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1760486400000",
    "number": "1982242228",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "PO BOX 4439",
            "city": "HOUSTON",
            "state": "TX",
            "postal_code": "772104439",
            "telephone_number": "713-792-2991"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "521 PARNASSUS AVE",
            "city": "SAN FRANCISCO",
            "state": "CA",
            "postal_code": "941432206",
            "telephone_number": "415-514-3785"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "1515 Holcombe Blvd",
            "address_purpose": "LOCATION",
            "city": "Houston",
            "state": "TX",
            "postal_code": "770304000",
            "country_code": "US",
            "telephone_number": "713-792-6161",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "SINGH",
        "first_name": "AJAYPAL",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2019-12-17",
        "last_updated": "2025-10-15",
        "certification_date": "2025-10-15",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "367500000X",
            "taxonomy_group": "",
            "desc": "Nurse Anesthetist, Certified Registered",
            "state": "CA",
            "license": "NA95002428",
            "primary": true
        },
        {
            "code": "163W00000X",
            "taxonomy_group": "",
            "desc": "Registered Nurse",
            "state": "PA",
            "license": "RN712350",
            "primary": false
        },
        {
            "code": "367500000X",
            "taxonomy_group": "",
            "desc": "Nurse Anesthetist, Certified Registered",
            "state": "TX",
            "license": "1033724",
            "primary": false
        }
    ],
    "identifiers": [
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "CSHCN MEDICAID",
            "identifier": "428409302",
            "state": "TX"
        },
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "BCBS",
            "identifier": "8PV117",
            "state": "TX"
        },
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "428409301",
            "state": "TX"
        }
    ],
    "endpoints": [],
    "other_names": []
}

Other providers in San Francisco, CA

Sources for this page

  • NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Oct 15, 2025; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
  • Medicare enrollment (CMS PECOS): enrollments, PAC IDs and benefit reassignments.
  • 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.