Individual provider Active NPI

San Tat, MD MPH

  • Pediatrics Physician
  • San Francisco, CA
National Provider Identifier
1194959825
Registry record updated May 11, 2026
On this page

Key facts

NPPES NPI Registry
Primary specialty
Pediatrics PhysicianTaxonomy code 208000000X
License
A107257 Issued in CA
Practice address
Department of Pediatrics M691
505 Parnassus Ave
San Francisco, CA 94143-0001
Phone
(415) 476-5001
NPI assigned
May 9, 2009
Sex
Male
Sole proprietor
Yes

NPPES NPI Registry

Updated by the provider on May 11, 2026

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

Specialties & licenses 2

Specialty (taxonomy)CodeLicenseStatePrimary
Pediatrics Physician 208000000X A107257 CA Primary
Pediatric Emergency Medicine (Emergency Medicine) Physician 207PP0204X A107257 CA

Addresses

Primary practice location

Department of Pediatrics M691
505 Parnassus Ave
San Francisco, CA 94143-0001

Mailing address

505 Parnassus Ave RM M691
San Francisco, CA 94143-2204
Phone (415) 476-5001

Other practice location 1

1001 Potrero Ave
San Francisco, CA 94110-3518
Phone (628) 206-8000

Other names 1

  • Dr. Sonny Tat Other name

Medicare participation

Medicare enrollment files
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

Enrollment IDStateProvider typePAC IDDetails
I20100629000920 CA Practitioner - Pediatric Medicine 0446381875 Reassigns benefits to 4 organizations

Care Compare profile

Medicare Care Compare

Merit-based Incentive Payment System (MIPS)

Final score
84.89 of 100Reported as group
Quality
81.13
Improvement activities
40
Cost
71.5

National Provider Directory

National Provider Directory
Medicare enrollment (NPD)
Enrolled
Credentials
Doctor of Medicine

State licenses

LicenseStateTypeSpecialty
A107257CAMDPediatric Emergency Medicine (Emergency Medicine) Physician

Practice roles

OrganizationSpecialtyStatusNew patients
University of California San Francisco Pediatrics Current Accepting new patients
UCSF Medical Group Business Services CurrentSince Feb 12, 2020 Accepting new patients
UCSF Medical Group Business Services CurrentSince Feb 12, 2020 Accepting new patients
UCSF Pediatrics Associates Pediatrics CurrentSince Jun 15, 2010 Accepting new patients
University of California SFGH Medical Group Current Accepting new patients
University of California SFGH Medical Group CurrentSince Dec 15, 2015 Accepting new patients
University of California San Francisco Pediatrics CurrentSince Jun 15, 2010 Accepting new patients
University of California San Francisco CurrentSince Jun 15, 2010 Accepting new patients
Regents of the University of California Past Accepting new patients
University of California San Francisco Past Accepting new patients

Locations

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

505 Parnassus Ave
Rm M691
San Francisco, CA 94143
Phone (415) 476-5001

1001 Potrero Ave
Bldg 5
San Francisco, CA 94110
Phone (628) 206-5753

1001 Potrero Ave
San Francisco, CA 94110
Phone (415) 206-2305

1600 Divisadero St
Unit C136
San Francisco, CA 94143

1975 4th St
San Francisco, CA 94143
Phone (415) 353-3000

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

1975 4th St
Fl 1
San Francisco, CA 94143
Phone (303) 918-4827

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

1001 Potrero Ave
Rm 3A32
San Francisco, CA 94110
Phone (628) 206-8291

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.

NPI Registry JSON

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

{
    "created_epoch": "1241827200000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1778457600000",
    "number": "1194959825",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "505 PARNASSUS AVE RM M691",
            "city": "SAN FRANCISCO",
            "state": "CA",
            "postal_code": "941432204",
            "telephone_number": "415-476-5001"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "DEPARTMENT OF PEDIATRICS M691",
            "address_2": "505 PARNASSUS AVE",
            "city": "SAN FRANCISCO",
            "state": "CA",
            "postal_code": "941430001",
            "telephone_number": "415-476-5001"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "1001 Potrero Ave",
            "address_purpose": "LOCATION",
            "city": "San Francisco",
            "state": "CA",
            "postal_code": "941103518",
            "country_code": "US",
            "telephone_number": "628-206-8000",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "TAT",
        "first_name": "SAN",
        "name_prefix": "Dr.",
        "credential": "MD MPH",
        "sole_proprietor": "YES",
        "sex": "M",
        "enumeration_date": "2009-05-09",
        "last_updated": "2026-05-11",
        "certification_date": "2026-05-11",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "208000000X",
            "taxonomy_group": "",
            "desc": "Pediatrics",
            "state": "CA",
            "license": "A107257",
            "primary": true
        },
        {
            "code": "207PP0204X",
            "taxonomy_group": "",
            "desc": "Emergency Medicine, Pediatric Emergency Medicine",
            "state": "CA",
            "license": "A107257",
            "primary": false
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": [
        {
            "first_name": "SONNY",
            "last_name": "TAT",
            "prefix": "DR.",
            "credential": "MD MPH",
            "code": "5",
            "type": "Other Name"
        }
    ]
}

Other providers in San Francisco, CA

Sources for this page

Verify at the official NPI Registry.