Individual provider Active NPI

Aditi Choudhry, M.D.

  • Hematology & Oncology Physician
  • Walnut Creek, CA
National Provider Identifier
1427218908
Registry record updated Jul 7, 2026
On this page

Key facts

NPPES NPI Registry
Primary specialty
Hematology & Oncology PhysicianTaxonomy code 207RH0003X
License
A115151 Issued in CA
Practice address
177 La Casa Via Ste 390
Walnut Creek, CA 94598-6101
Phone
(925) 692-5610
NPI assigned
Jun 10, 2008
Sex
Female
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on Jul 7, 2026

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

Specialties & licenses 1

Specialty (taxonomy)CodeLicenseStatePrimary
Hematology & Oncology Physician 207RH0003X A115151 CA Primary

Addresses

Primary practice location

177 La Casa Via Ste 390
Walnut Creek, CA 94598-6101

Mailing address

1450 Treat Blvd Ste 300
Walnut Creek, CA 94597-2168
Phone (925) 952-2828

Other identifiers 1

IdentifierTypeStateIssuer
P01149802OtherCARAILROAD MEDICARE

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
I20120629000068 CA Practitioner - Hematology/OncologyPractitioner - Internal Medicine 9638338171 Reassigns benefits to 3 organizations

Care Compare profile

Medicare Care Compare
Specialty
Hematology/Oncology
Education
Other, 2005
Medicare assignment
Accepts the Medicare-approved amount as payment in full
Telehealth
Offers telehealth services
Group practices
Providence Medical FoundationGroup PAC ID 8921993205, 1,461 clinicians
John Muir Physician NetworkGroup PAC ID 6608789813, 488 clinicians

Practice addresses (Care Compare)

110 Lynch Creek Way
Suite a
Petaluma, CA 94954-2337
Phone (707) 763-0600

2700 Grant St
Suite 200
Concord, CA 94520-2270
Phone (925) 674-0500

Hospital & facility affiliations

Merit-based Incentive Payment System (MIPS)

Final score
90.32 of 100Reported as group
Quality
89.54
Promoting interoperability
100
Improvement activities
40
Cost
74.34

National Provider Directory

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

State licenses

LicenseStateTypeSpecialty
A115151CAMDInternal Medicine Physician

Practice roles

OrganizationSpecialtyStatusNew patients
John Muir Trauma Physicians Billing Service Current Accepting new patients
John Muir Physician Network CurrentSince May 20, 2012 Accepting new patients
Providence Medical Foundation CurrentSince Jan 2, 2026 Accepting new patients
Providence Medical Foundation CurrentSince Jan 2, 2026 Accepting new patients
John Muir Trauma Physicians Billing Service CurrentSince Jun 23, 2013 Accepting new patients
Providence Medical Foundation Past Accepting new patients
John Muir Health Past Accepting new patients
John Muir Health Past Accepting new patients
Sutter Valley Hospitals Past Accepting new patients
Legacy Emanuel Hospital & Health Center Past Accepting new patients
Legacy Good Samaritan Hospital and Medical Center Past Accepting new patients
Sutter Delta Medical Center Past Accepting new patients
San Ramon Regional Medical Center, LLC Past Accepting new patients

Locations

2400 Balfour Rd
Ste 120
Brentwood, CA 94513
Phone (925) 308-8112

2700 Grant St
Ste 200
Concord, CA 94520
Phone (925) 674-2609

110 Lynch Creek Way
#A
Petaluma, CA 94954
Phone (707) 763-0600

380 Civic Dr
Ste 100
Pleasant Hill, CA 94523
Phone (925) 284-3840

400 Taylor Blvd
Ste 202
Pleasant Hill, CA 94523
Phone (925) 932-4567

400 Taylor Blvd
Ste 105
Pleasant Hill, CA 94523
Phone (925) 687-2570

5201 Norris Canyon Rd
Ste 140
San Ramon, CA 94583
Phone (925) 277-7550

12677 Alcosta Blvd
Ste 210
San Ramon, CA 94583
Phone (925) 365-1019

500 Doyle Park Dr
Ste 100
Santa Rosa, CA 95405
Phone (714) 449-4842

1165 Montgomery Dr
#1112
Santa Rosa, CA 95405
Phone (707) 546-3210

3555 Round Barn Cir
Santa Rosa, CA 95403
Phone (707) 528-1050

1601 Ygnacio Valley Rd
Walnut Creek, CA 94598
Phone (925) 295-1545

1450 Treat Blvd
Ste 300
Walnut Creek, CA 94597

1220 Rossmoor Pkwy
Walnut Creek, CA 94595
Phone (925) 947-3393

177 La Casa Via
Ste 200AD
Walnut Creek, CA 94598

177 La Casa Via
Ste 390
Walnut Creek, CA 94598
Phone (925) 692-5610

Interoperability endpoints

  • Direct secure messaging: achoudhry293602@hisp.ehr.sutterhealth.org
  • Direct secure messaging: achoudhry9933@ehr.johnmuirhealth.com

Organizations & group practices 13

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 13

Hospital & facility affiliations 5

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": "1213056000000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1783382400000",
    "number": "1427218908",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "1450 TREAT BLVD STE 300",
            "city": "WALNUT CREEK",
            "state": "CA",
            "postal_code": "945972168",
            "telephone_number": "925-952-2828"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "177 LA CASA VIA STE 390",
            "city": "WALNUT CREEK",
            "state": "CA",
            "postal_code": "945986101",
            "telephone_number": "925-692-5610"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "CHOUDHRY",
        "first_name": "ADITI",
        "name_prefix": "Dr.",
        "credential": "M.D.",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2008-06-10",
        "last_updated": "2026-07-07",
        "certification_date": "2026-07-07",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207RH0003X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Hematology & Oncology",
            "state": "CA",
            "license": "A115151",
            "primary": true
        }
    ],
    "identifiers": [
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "RAILROAD MEDICARE",
            "identifier": "P01149802",
            "state": "CA"
        }
    ],
    "endpoints": [],
    "other_names": []
}

Other providers in Walnut Creek, CA

Sources for this page

Verify at the official NPI Registry.