Individual provider Active NPI

Karolina Grekov, MD

  • Pediatric Critical Care Medicine Physician
  • Palo Alto, CA
National Provider Identifier
1841786274
Registry record updated Aug 7, 2025
On this page

Key facts

NPPES NPI Registry
Primary specialty
Pediatric Critical Care Medicine PhysicianTaxonomy code 2080P0203X
License
A160100 Issued in CA
Practice address
725 Welch Rd
Palo Alto, CA 94304-1601
Phone
(650) 497-8000
NPI assigned
Jul 9, 2018
Sex
Female
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on Aug 7, 2025

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

Specialties & licenses 3

Specialty (taxonomy)CodeLicenseStatePrimary
Hospice and Palliative Medicine (Internal Medicine) Physician 207RH0002X A160100 CA
Pediatrics Physician 208000000X A160100 CA
Pediatric Critical Care Medicine Physician 2080P0203X A160100 CA Primary

Addresses

Primary practice location

725 Welch Rd
Palo Alto, CA 94304-1601

Mailing address

300 Pasteur Dr
Stanford, CA 94305-2200
Phone (650) 723-4000

Other practice location 1

300 Pasteur Dr
Stanford, CA 94305-2200
Phone (650) 723-4000

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
I20200611001543 CA Practitioner - Pediatric Medicine 0648691030 Reassigns benefits to 3 organizations

Care Compare profile

Medicare Care Compare
Specialty
Pediatric Medicine
Education
Loma Linda University School of Medicine, 2017
Medicare assignment
Accepts the Medicare-approved amount as payment in full
Group practices
LPCH Medical Group Div of LucileGroup PAC ID 0840298543, 332 clinicians

Practice addresses (Care Compare)

725 Welch Rd
Palo Alto, CA 94304-1601
Phone (650) 498-7200

National Provider Directory

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

State licenses

LicenseStateTypeSpecialty
A160100CAMDPediatric Critical Care Medicine Physician

Practice roles

OrganizationSpecialtyStatusNew patients
Stanford Health Care CurrentSince Jun 12, 2025 Accepting new patients
Stanford Health Care Pediatrics Current Accepting new patients
Stanford Health Care Pediatrics CurrentSince Jun 12, 2025 Accepting new patients
LPCH Medical Group Div of Lucile Pediatrics CurrentSince Jun 12, 2025 Accepting new patients
Children'S Hospital Los Angeles Medical Group, Inc. Pediatrics CurrentSince Jun 8, 2020 Accepting new patients

Locations

4650 W Sunset Blvd
Los Angeles, CA 90027
Phone (323) 361-2122

725 Welch Rd
Palo Alto, CA 94304
Phone (650) 497-8979

300 Pasteur Dr
Stanford, CA 94305
Phone (650) 498-5710

Interoperability endpoints

  • Direct secure messaging: kgrekov70084@valleychildrens-prd.direct-ci.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.

NPI Registry JSON

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

{
    "created_epoch": "1531094400000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1754524800000",
    "number": "1841786274",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "300 PASTEUR DR",
            "city": "STANFORD",
            "state": "CA",
            "postal_code": "943052200",
            "telephone_number": "650-723-4000"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "725 WELCH RD",
            "city": "PALO ALTO",
            "state": "CA",
            "postal_code": "943041601",
            "telephone_number": "650-497-8000"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "300 Pasteur Dr",
            "address_purpose": "LOCATION",
            "city": "Stanford",
            "state": "CA",
            "postal_code": "943052200",
            "country_code": "US",
            "telephone_number": "650-723-4000",
            "fax_number": "650-723-4000",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "GREKOV",
        "first_name": "KAROLINA",
        "credential": "MD",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2018-07-09",
        "last_updated": "2025-08-07",
        "certification_date": "2025-08-07",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207RH0002X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Hospice and Palliative Medicine",
            "state": "CA",
            "license": "A160100",
            "primary": false
        },
        {
            "code": "208000000X",
            "taxonomy_group": "",
            "desc": "Pediatrics",
            "state": "CA",
            "license": "A160100",
            "primary": false
        },
        {
            "code": "2080P0203X",
            "taxonomy_group": "",
            "desc": "Pediatrics, Pediatric Critical Care Medicine",
            "state": "CA",
            "license": "A160100",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

Other providers in Palo Alto, CA

Sources for this page

Verify at the official NPI Registry.