Individual provider Active NPI

Tarannum Guller, MD

  • Internal Medicine Physician
  • Walnut Creek, CA
National Provider Identifier
1972532083
Registry record updated Jan 7, 2025
On this page

Key facts

NPPES NPI Registry
Primary specialty
Internal Medicine PhysicianTaxonomy code 207R00000X
License
A89244 Issued in CA
Practice address
2637 Shadelands Dr
Walnut Creek, CA 94598-2512
Phone
(925) 932-6330
Fax
(925) 932-0139
NPI assigned
Jul 1, 2006
Sex
Female
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on Jan 7, 2025

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

Specialties & licenses 2

Specialty (taxonomy)CodeLicenseStatePrimary
Hospitalist Physician 208M00000X A89244 CA
Internal Medicine Physician 207R00000X A89244 CA Primary

Addresses

Primary practice location

2637 Shadelands Dr
Walnut Creek, CA 94598-2512

Mailing address

2637 Shadelands Dr
Walnut Creek, CA 94598-2512

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
I20050516000909 CA Practitioner - Internal Medicine 3971583220 Reassigns benefits to 8 organizations

Care Compare profile

Medicare Care Compare
Specialty
Internal Medicine
Education
Other, 1999
Medicare assignment
Accepts the Medicare-approved amount as payment in full
Telehealth
Offers telehealth services
Group practices
Bass Medical GroupGroup PAC ID 9032111281, 292 clinicians

Practice addresses (Care Compare)

2637 Shadelands Dr
Walnut Creek, CA 94598-2512
Phone (925) 378-4512

Hospital & facility affiliations

National Provider Directory

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

State licenses

LicenseStateTypeSpecialty
220570MAMDClinical Social Worker
89244CAMDPharmacist
A89244CAMDHospitalist Physician

Practice roles

OrganizationSpecialtyStatusNew patients
County of Santa Clara CurrentSince Apr 9, 2019 Accepting new patients
Advanced Sleep Diagnostics, Inc. CurrentSince Jun 24, 2024 Accepting new patients
Bay Area Community Health CurrentSince Aug 25, 2025 Accepting new patients
County of Santa Clara Internal Medicine Current Accepting new patients
County of Santa Clara Current Accepting new patients
County of Santa Clara CurrentSince Apr 9, 2019 Accepting new patients
Bass Medical Group CurrentSince Jun 24, 2024 Accepting new patients
County of Santa Clara CurrentSince Apr 9, 2019 Accepting new patients
Quantum Bay Area Hospitalist Medical Group Inc Internal Medicine CurrentSince May 1, 2024 Accepting new patients
Hospitalist Medicine Physicians of California, Inc Internal Medicine CurrentSince Dec 20, 2015 Accepting new patients
Merced Hospitalist Medical Group, Inc. Internal Medicine CurrentSince Jan 21, 2017 Accepting new patients
County of Santa Clara CurrentSince Apr 9, 2019 Accepting new patients
Bass Medical Group Current Accepting new patients
Avant Inpatient Services Medical Group, Inc Internal Medicine Past Accepting new patients
Bass Medical Group Past Accepting new patients
Bay Area Community Health Past Accepting new patients
Bass Medical Group Past Accepting new patients

Locations

1505 Saint Alphonsus Way
Alamo, CA 94507
Phone (925) 837-4225

18300 US Highway 18
Apple Valley, CA 92307
Phone (760) 424-2311

40910 Fremont Blvd
Fremont, CA 94538
Phone (510) 770-8133

1860 Mowry Ave
Fremont, CA 94538
Phone (510) 608-6065

7475 Camino Arroyo
Gilroy, CA 95020
Phone (408) 852-2400

1300 N Vermont Ave
Los Angeles, CA 90027
Phone (213) 413-3000

15891 Los Gatos Almaden Rd
Los Gatos, CA 95032
Phone (408) 358-5633

333 Mercy Ave
Merced, CA 95340
Phone (209) 385-1280

2500 Grant Rd
Mountain View, CA 94040
Phone (650) 903-9500

2101 Alexian Dr
San Jose, CA 95116
Phone (408) 272-6050

1996 Lundy Ave
San Jose, CA 95131
Phone (408) 299-5846

500 Tully Rd
San Jose, CA 95111
Phone (408) 817-1433

750 S Bascom Ave
San Jose, CA 95128
Phone (408) 885-2320

225 N Jackson Ave
San Jose, CA 95116
Phone (408) 347-4051

751 S Bascom Ave
San Jose, CA 95128
Phone (408) 885-5110

1993 McKee Rd
San Jose, CA 95116
Phone (408) 254-6320

12677 Alcosta Blvd
Ste 180
San Ramon, CA 94583
Phone (925) 464-1982

660 S Fair Oaks Ave
Sunnyvale, CA 94086
Phone (408) 885-7366

2637 Shadelands Dr
Walnut Creek, CA 94598
Phone (925) 627-3424

Interoperability endpoints

  • Direct secure messaging: tguller189463@ehr.johnmuirhealth.com
  • Direct secure messaging: tguller711707@direct.ochin.org
  • Direct secure messaging: tguller86409@santaclaravalley.direct-ci.net
  • Direct secure messaging: tguller14209@alamedahs.direct-ci.com

Organizations & group practices 17

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.

View all 17

Hospital & facility affiliations 2

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": "1151712000000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1736208000000",
    "number": "1972532083",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "2637 SHADELANDS DR",
            "city": "WALNUT CREEK",
            "state": "CA",
            "postal_code": "945982512"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "2637 SHADELANDS DR",
            "city": "WALNUT CREEK",
            "state": "CA",
            "postal_code": "945982512",
            "telephone_number": "925-932-6330",
            "fax_number": "925-932-0139"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "GULLER",
        "first_name": "TARANNUM",
        "credential": "MD",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2006-07-01",
        "last_updated": "2025-01-07",
        "certification_date": "2025-01-07",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "208M00000X",
            "taxonomy_group": "",
            "desc": "Hospitalist",
            "state": "CA",
            "license": "A89244",
            "primary": false
        },
        {
            "code": "207R00000X",
            "taxonomy_group": "",
            "desc": "Internal Medicine",
            "state": "CA",
            "license": "A89244",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

Other providers in Walnut Creek, CA

Sources for this page

Verify at the official NPI Registry.