Organization Active NPI

St John Kronstadt Home for Aged Russian Americans

  • Skilled Nursing Facility
  • Castro Valley, CA
National Provider Identifier
1861484982
Registry record updated Jun 23, 2011
On this page

Key facts

NPPES NPI Registry
Primary specialty
Skilled Nursing FacilityTaxonomy code 314000000X
License
020000104 Issued in CA
Legal business name
ST JOHN KRONSTADT HOME FOR AGED RUSSIAN AMERICANS
Practice address
4432 James Ave
Castro Valley, CA 94546-3533
Phone
(510) 889-7000
Fax
(510) 889-7622
NPI assigned
Aug 16, 2005
Last updated
Jun 23, 2011By the provider in NPPES
Organization subpart
No

NPPES NPI Registry

Updated by the provider on Jun 23, 2011

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

Authorized official

Name
Jeremy E Grimes
Title
Manager
Phone
(925) 855-0881

Specialties & licenses 4

Specialty (taxonomy)CodeLicenseStatePrimary
Skilled Nursing Facility 314000000X 020000104 CA Primary
Durable Medical Equipment & Medical Supplies 332B00000X 020000104 CA
Nursing Facility Supplies (DME) 332BN1400X 020000104 CA
Parenteral & Enteral Nutrition Supplies (DME) 332BP3500X 020000104 CA

Addresses

Primary practice location

4432 James Ave
Castro Valley, CA 94546-3533

Mailing address

5000 Executive Pkwy
Suite 150
San Ramon, CA 94583-4210
Phone (925) 855-0881

Other identifiers 1

IdentifierTypeStateIssuer
ZZR 55016GMedicaidCA

Medicare participation

Medicare enrollment files
Medicare fee-for-service enrollment
Enrolled in CA

Enrollment records 1

Enrollment IDStateProvider typePAC IDDetails
O20041118000495 CA Part A Provider - Skilled Nursing Facility 1355305384 Practice locations: Castro Valley, CA

NPI to CCN mapping 1

The Medicare certification numbers (CCNs) connected to NPI 1861484982. Details of each certification follow.

Skilled nursing facility certification: CCN 555016

Legal name
ST JOHN KRONSTADT HOME FOR AGED RUSSIAN AMERICANS
Doing business as
ST JOHN KRONSTADT CARE CENTER
Certification status
Active
Provider type (POS)
Nursing home – SNF/NF dual certification
Participating since
May 14, 1976
Last certification
Jun 7, 2024
Beds
49
Ownership / control type
Nonprofit Corporation
Organization structure
CorporationNon-profit
Enrollment address
4432 James Ave
Castro Valley, CA 94546-3533
Nursing home name
ST JOHN KRONSTADT CONVALESCENT CENTER

Care Compare: Nursing home

Medicare Care Compare
Listed as
St John Kronstadt Convalescent CenterCCN 555016 · All quality measures
Overall star rating
5 of 5
Health inspections
4 of 5
Staffing
5 of 5
Quality measures
5 of 5
Type
Medicare and Medicaid
Ownership
Non profit - Corporation
Certified
May 14, 1976
Medicare certification status
ActiveFrom the Provider of Services file
Certified beds
4942.6 residents per day on average

Processed by Care Compare on Aug 1, 2026.

Laboratory certificates & supplier records

Derived by NPIMap

These CMS records do not include an NPI. They are shown because their name and street address match this provider’s.

CLIA laboratory certificates

CLIA numberLaboratoryCertificateExpires
05D0725937St John Kronstadt Convalescent Center4432 James Avenue, Castro Valley, CA 94546Certificate of waiverAug 31, 2026

National Provider Directory

National Provider Directory

Ownership & related parties

All disclosed owners & managing parties 11

As disclosed on the Medicare enrollment (CMS All Owners files). Individuals include officers, directors and managing employees, who may not hold ownership.

NameRoleSinceShare
St John Kronstadt Home for Aged Russian Americans Organization, Castro Valley, CA Non-profit 5% Or Greater Direct Ownership Interest Oct 15, 1971 100%
Stefan Pavlenko Individual Corporate OfficerPresident Jan 1, 2000
Corporate DirectorPresident Nov 22, 2004 20%
Uyen-CHI Huynh Individual Adp of the SNF Jan 1, 2024
Fabiola Garcia Individual Operational/Managerial Control Jan 25, 2023
Adp of the SNF Jan 25, 2023
Edward Gonzalez Individual Operational/Managerial ControlDirector of Nursing Jan 1, 2014 100%
Constantine Koloboff Individual Corporate OfficerSecretary Jan 1, 2007
Corporate DirectorSecretary Jan 1, 2007 20%
Jeremy Grimes Individual Operational/Managerial Control Jan 1, 2014
Adp of the SNF Jan 1, 2011
Craig Danby Individual Operational/Managerial ControlAdministrator Apr 1, 2014 100%
Alexander Loukianoff Individual Corporate DirectorBoard Member Jan 1, 2007 20%
Andrew Maximow Individual Corporate DirectorBoard Member Jan 1, 2010 20%
Serenity 4 Management Services LLC Organization, San Ramon, CA Corporation, Management services company, Consulting firm Operational/Managerial Control Jan 1, 2024
Adp of the SNF Jan 1, 2024

Owners & managing parties with NPI records 1

Owners and managing parties disclosed on this facility’s Medicare enrollment that are themselves Medicare-enrolled.

Facilities with the same owner 1

Facilities that share an organizational owner with 5% or greater ownership or operational control.

NPI Registry JSON

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

{
    "created_epoch": "1124150400000",
    "enumeration_type": "NPI-2",
    "last_updated_epoch": "1308787200000",
    "number": "1861484982",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "5000 EXECUTIVE PKWY",
            "address_2": "SUITE 150",
            "city": "SAN RAMON",
            "state": "CA",
            "postal_code": "945834210",
            "telephone_number": "925-855-0881",
            "fax_number": "925-855-9297"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "4432 JAMES AVE",
            "city": "CASTRO VALLEY",
            "state": "CA",
            "postal_code": "945463533",
            "telephone_number": "510-889-7000",
            "fax_number": "510-889-7622"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "organization_name": "ST JOHN KRONSTADT HOME FOR AGED RUSSIAN AMERICANS",
        "organizational_subpart": "NO",
        "enumeration_date": "2005-08-16",
        "last_updated": "2011-06-23",
        "status": "A",
        "authorized_official_last_name": "GRIMES",
        "authorized_official_first_name": "JEREMY",
        "authorized_official_middle_name": "E",
        "authorized_official_title_or_position": "MANAGER",
        "authorized_official_telephone_number": "925-855-0881"
    },
    "taxonomies": [
        {
            "code": "314000000X",
            "taxonomy_group": "",
            "desc": "Skilled Nursing Facility",
            "state": "CA",
            "license": "020000104",
            "primary": true
        },
        {
            "code": "332B00000X",
            "taxonomy_group": "",
            "desc": "Durable Medical Equipment & Medical Supplies",
            "state": "CA",
            "license": "020000104",
            "primary": false
        },
        {
            "code": "332BN1400X",
            "taxonomy_group": "",
            "desc": "Durable Medical Equipment & Medical Supplies, Nursing Facility Supplies",
            "state": "CA",
            "license": "020000104",
            "primary": false
        },
        {
            "code": "332BP3500X",
            "taxonomy_group": "",
            "desc": "Durable Medical Equipment & Medical Supplies, Parenteral & Enteral Nutrition",
            "state": "CA",
            "license": "020000104",
            "primary": false
        }
    ],
    "identifiers": [
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "ZZR 55016G",
            "state": "CA"
        }
    ],
    "endpoints": [],
    "other_names": []
}

Other providers in Castro Valley, CA

Sources for this page

Verify at the official NPI Registry.