NPIMap

Individual provider Active NPI

Ronak Patel, M.D.

  • Hematology & Oncology Physician
  • Walnut Creek, CA
National Provider Identifier
1255872602
Registry record updated Nov 25, 2025
On this page

Key facts

NPPES NPI Registry
Primary specialty
Hematology & Oncology PhysicianTaxonomy code 207RH0003X
License
A157379 Issued in CA
Practice address
177 La Casa Via Ste 390
Walnut Creek, CA 94598-6101
Phone
(925) 692-5610
NPI assigned
Mar 18, 2017
Last updated
Nov 25, 2025By the provider in NPPES
Sex
Male
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on Nov 25, 2025

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 A157379 CA Primary

Addresses

Primary practice location

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

Mailing address

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

Medicare participation

Medicare enrollment files
Medicare fee-for-service enrollment
Enrolled in CA
Eligible to order & refer
  • Part B services
  • Medical equipment
  • Home health
  • Power mobility devices
  • Hospice
Green means eligible to order or refer.

Enrollment records 1

Enrollment IDStateProvider typePAC IDDetails
I20191215000017 CA Practitioner - Hematology/OncologyPractitioner - Internal Medicine 7315297637 Reassigns benefits to 2 organizations

Care Compare profile

Medicare Care Compare
Specialty
Hematology/Oncology
Education
University of Miami, LM Miller School of Medicine, 2017
Medicare assignment
Accepts the Medicare-approved amount as payment in full
Telehealth
Offers telehealth services
Group practices
John Muir Physician NetworkGroup PAC ID 6608789813, 488 clinicians

Practice addresses (Care Compare)

400 Taylor Blvd
Suite 202
Pleasant Hill, CA 94523-2163
Phone (925) 677-5041

Hospital & facility affiliations

National Provider Directory

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

State licenses

LicenseStateTypeSpecialty
157379CAMDMental Health Counselor
A157379CAMDHematology & Oncology Physician

Practice roles

OrganizationSpecialtyStatusNew patients
Healthcare Partners Affiliates Medical Group CurrentSince Oct 5, 2019 Accepting new patients
Healthcare Partners Affiliates Medical Group CurrentSince Oct 5, 2019 Accepting new patients
John Muir Physician Network CurrentSince Jul 31, 2023 Accepting new patients
John Muir Health Past Accepting new patients
John Muir Health Past Accepting new patients

Locations

1236 N Magnolia Ave
Anaheim, CA 92801
Phone (714) 995-1000

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

2400 Balfour Rd
Ste 230
Brentwood, CA 94513
Phone (925) 324-7404

824 E Carson St
Ste 104
Carson, CA 90745
Phone (310) 830-9706

797 S Fair Oaks Ave
Pasadena, CA 91105
Phone (626) 535-2434

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

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

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

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

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

177 La Casa Via
Ste 300
Walnut Creek, CA 94598
Phone (925) 692-5647

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

Interoperability endpoints

  • Direct secure messaging: rpatel163892@ehr.johnmuirhealth.com
  • Direct secure messaging: rpatel668151@hisp.ehr.sutterhealth.org

Organizations & group practices 5

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

Hospital & facility affiliations 9

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": "1489795200000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1764028800000",
    "number": "1255872602",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "1450 TREAT BLVD # 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": "PATEL",
        "first_name": "RONAK",
        "credential": "M.D.",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2017-03-18",
        "last_updated": "2025-11-25",
        "certification_date": "2025-11-25",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207RH0003X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Hematology & Oncology",
            "state": "CA",
            "license": "A157379",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

Other providers in Walnut Creek, CA

Sources for this page

Verify at the official NPI Registry.