Individual provider Active NPI

Mara Berezniak, D.O.

  • Family Medicine Physician
  • Penn Valley, CA
National Provider Identifier
1770535585
Registry record updated Oct 24, 2025
On this page

Key facts

NPPES NPI Registry
Primary specialty
Family Medicine PhysicianTaxonomy code 207Q00000X
License
20A7940 Issued in CA
Practice address
11400 Pleasant Valley Rd
Penn Valley, CA 95946-9001
Phone
(530) 432-7023
Fax
(530) 432-7026
NPI assigned
May 17, 2006
Sex
Female
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on Oct 24, 2025

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

Specialties & licenses 1

Specialty (taxonomy)CodeLicenseStatePrimary
Family Medicine Physician 207Q00000X 20A7940 CA Primary

Addresses

Primary practice location

11400 Pleasant Valley Rd
Penn Valley, CA 95946-9001

Mailing address

13962 La Barr Pines Dr
Grass Valley, CA 95949-6317
Phone (530) 274-7125

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
I20050405001405 CA Practitioner - Family PracticePractitioner - Internal Medicine 0840247417 Reassigns benefits to 1 organization

Care Compare profile

Medicare Care Compare
Specialty
Family Practice
Education
Other, 2000
Medicare assignment
Accepts the Medicare-approved amount as payment in full
Group practices

Practice addresses (Care Compare)

140 Litton Dr
Suite 100
Grass Valley, CA 95945-5078
Phone 5302729788277

Hospital & facility affiliations

  • Progressive Home Care - Auburn Home health agency, Auburn, CA, CCN 557482
  • Sierra Nevada Home Care Home health agency, Grass Valley, CA, CCN 057755
  • Sierra Nevada Memorial Hospital Hospital, Grass Valley, CA, CCN 050150
  • Sutter Medical Center, Sacramento Hospital, Sacramento, CA, CCN 050108

Procedures performed for Medicare patients

ProcedureNumber of procedures
Removal of skin lesions1-10
Removal or shaving of skin growth1-10

National Provider Directory

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

State licenses

LicenseStateTypeSpecialty
7940CAMDOccupational Therapist

Practice roles

OrganizationSpecialtyStatusNew patients
Sierra Nevada Primary Care Family Medicine Past Accepting new patients
Hill Physicians Medical Group - PPO Program Past Accepting new patients

Networks

  • BSC 65 PLUS INDIVIDUAL MAPD

Interoperability endpoints

  • Direct secure messaging: mara.berezniak@snpcpa.eclinicaldirectplus.com

Organizations & group practices 3

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": "1147824000000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1761264000000",
    "number": "1770535585",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "13962 LA BARR PINES DR",
            "city": "GRASS VALLEY",
            "state": "CA",
            "postal_code": "959496317",
            "telephone_number": "530-274-7125"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "11400 PLEASANT VALLEY RD",
            "city": "PENN VALLEY",
            "state": "CA",
            "postal_code": "959469001",
            "telephone_number": "530-432-7023",
            "fax_number": "530-432-7026"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "BEREZNIAK",
        "first_name": "MARA",
        "name_prefix": "Dr.",
        "credential": "D.O.",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2006-05-17",
        "last_updated": "2025-10-24",
        "certification_date": "2025-10-24",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207Q00000X",
            "taxonomy_group": "",
            "desc": "Family Medicine",
            "state": "CA",
            "license": "20A7940",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

Other providers in Penn Valley, CA

Sources for this page

Verify at the official NPI Registry.