Individual provider Active NPI

Ramin Khashayar, MD

  • Critical Care Medicine (Internal Medicine) Physician
  • Walnut Creek, CA
National Provider Identifier
1003801358
Registry record updated Jul 8, 2013
On this page

Key facts

NPPES NPI Registry
Primary specialty
Critical Care Medicine (Internal Medicine) PhysicianTaxonomy code 207RC0200X
License
G077458 Issued in CA
Practice address
1399 Ygnacio Valley Rd
Ste 14
Walnut Creek, CA 94598-2884
Phone
(925) 939-3050
Fax
(925) 939-3057
NPI assigned
Sep 13, 2005
Sex
Male
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on Jul 8, 2013

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

Specialties & licenses 2

Specialty (taxonomy)CodeLicenseStatePrimary
Critical Care Medicine (Internal Medicine) Physician 207RC0200X G077458 CA Primary
Pulmonary Disease Physician 207RP1001X G077458 CA

Addresses

Primary practice location

1399 Ygnacio Valley Rd
Ste 14
Walnut Creek, CA 94598-2884

Mailing address

1399 Ygnacio Valley Rd
Suite 14
Walnut Creek, CA 94598-2884
Phone (925) 939-3050

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
I20040709001288 CA Practitioner - Pulmonary DiseasePractitioner - Critical Care (Intensivists) 2466348933 Reassigns benefits to 3 organizations

Care Compare profile

Medicare Care Compare
Specialty
Pulmonary DiseaseAlso: Critical Care (Intensivists)
Education
University of California, San Francisco School of Medicine, 1992
Medicare assignment
May accept Medicare assignment
Telehealth
Offers telehealth services
Group practices
John Muir Trauma Physicians Billing ServiceGroup PAC ID 3476542515, 111 clinicians
Muir Pulmonary Critical CareGroup PAC ID 3476449943, 13 clinicians
John Muir Physician NetworkGroup PAC ID 6608789813, 488 clinicians

Practice addresses (Care Compare)

1601 Ygnacio Vly Rd
Walnut Creek, CA 94596-0921
Phone (925) 939-3000

2700 Ygnacio Valley Rd
Suite 100
Walnut Creek, CA 94598-3462
Phone (925) 939-3050

3100 San Pablo Ave
Berkeley, CA 94702-2498
Phone (510) 985-5200

Hospital & facility affiliations

  • John Muir Medical Center - Walnut Creek Campus Hospital, Walnut Creek, CA, CCN 050180
  • John Muir Medical Center - Concord Campus Hospital, Concord, CA, CCN 050496
  • Alta Bates Summit Medical Center - Alta Bates Camp Hospital, Berkeley, CA, CCN 050305

Merit-based Incentive Payment System (MIPS)

Final score
98.62 of 100Reported as group
Quality
100
Promoting interoperability
100
Improvement activities
40
Cost
70.52

National Provider Directory

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

State licenses

LicenseStateTypeSpecialty
G077458CAMDCritical Care Medicine (Internal Medicine) Physician

Practice roles

OrganizationSpecialtyStatusNew patients
John Muir Physician Network CurrentSince Sep 1, 2025 Accepting new patients
John Muir Trauma Physicians Billing Service CurrentSince Apr 27, 2017 Accepting new patients
Muir Pulmonary Critical Care Critical Care Medicine CurrentSince Aug 25, 1993 Accepting new patients
John Muir Trauma Physicians Billing Service Current Accepting new patients
Bass Medical Group Past Accepting new patients

Locations

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

3100 San Pablo Ave
Ste 430
Berkeley, CA 94702
Phone (415) 476-3360

3100 San Pablo Ave
#430
Berkeley, CA 94702
Phone (510) 985-5200

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

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

1399 Ygnacio Valley Rd
Ste 14
Walnut Creek, CA 94598
Phone (925) 934-4123

2700 Ygnacio Valley Rd
Ste 100
Walnut Creek, CA 94598
Phone (925) 939-3050

Interoperability endpoints

  • Direct secure messaging: rkhashayar16835@ehr.johnmuirhealth.com

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 and National Provider Directory roles.

Hospital & facility affiliations 3

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": "1126569600000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1373241600000",
    "number": "1003801358",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "1399 YGNACIO VALLEY RD",
            "address_2": "SUITE 14",
            "city": "WALNUT CREEK",
            "state": "CA",
            "postal_code": "945982884",
            "telephone_number": "925-939-3050"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "1399 YGNACIO VALLEY RD",
            "address_2": "STE 14",
            "city": "WALNUT CREEK",
            "state": "CA",
            "postal_code": "945982884",
            "telephone_number": "925-939-3050",
            "fax_number": "925-939-3057"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "KHASHAYAR",
        "first_name": "RAMIN",
        "name_prefix": "Mr.",
        "credential": "MD",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2005-09-13",
        "last_updated": "2013-07-08",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207RC0200X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Critical Care Medicine",
            "state": "CA",
            "license": "G077458",
            "primary": true
        },
        {
            "code": "207RP1001X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Pulmonary Disease",
            "state": "CA",
            "license": "G077458",
            "primary": false
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

Other providers in Walnut Creek, CA

Sources for this page

Verify at the official NPI Registry.