Sierra Nevada Primary Care

Primary specialty

Family Medicine PhysicianTaxonomy code 207Q00000X

License

20A79401 Issued in CA

Legal business name

SIERRA NEVADA PRIMARY CARE

Doing business as

Sierra Care Physicians

Practice address

140 Litton Dr Ste 110
Grass Valley, CA 95945-5078

Phone

(530) 272-9770

Fax

(530) 272-9796

NPI assigned

Jun 15, 2006

Last updated

Oct 24, 2025By the provider in NPPES

Organization subpart

No

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

Authorized official

Name

Mara Berezniak, DONPI 1770535585

Title

DO

Phone

(530) 432-7023

Specialties & licenses 10

Addresses

Other names 1

• Sierra Care Physicians Doing business as

Tax ID family

Sierra Nevada Primary Care5 organizations share this tax ID, including this one

Other organizations with this tax ID 4

Organizations that report the same tax identification number in the National Provider Directory.

• Sierra Nevada Primary Care

  dba Sierra Care Physicians

  • Pediatrics Physician
  • Grass Valley, CA
  • NPI 1235145608
  NPD tax ID
• Sierra Nevada Primary Care

  dba Sierra Care Physicians

  • Pediatrics Physician
  • Grass Valley, CA
  • NPI 1548458839
  NPD tax ID
• Sierra Nevada Primary Care

  • Nurse Practitioner
  • Penn Valley, CA
  • NPI 1952621328
  NPD tax ID
• Sierra Nevada Primary Care Physicians a Medical Corporation

  dba Sierra Care Physicians, AMC

  • Family Medicine Physician
  • Grass Valley, CA
  • NPI 1427072008
  NPD tax ID

Locations

Practitioners 5

Individual providers connected to this organization through Medicare benefit reassignment, Care Compare group membership or National Provider Directory roles, and the practitioner matching its NPPES authorized official.

• Mara Berezniak, D.O.

  • Family Medicine Physician
  • Penn Valley, CA
  • NPI 1770535585
  NPD (past) Authorized official
• Andrew G Burt, MD

  • Family Medicine Physician
  • Penn Valley, CA
  • NPI 1902911845
  NPD (past)
• Linda Marie McIntosh, NP

  • Community Health Registered Nurse
  • Grass Valley, CA
  • NPI 1497977219
  NPD (past)
• Huy Anh Nguyen, D.O.

  • Family Medicine Physician
  • Grass Valley, CA
  • NPI 1467400853
  NPD (past)
• Walter Glen Speirs, PA-C

  • Physician Assistant
  • Mesa, AZ
  • NPI 1326004094
  NPD (past)

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

{
    "created_epoch": "1150329600000",
    "enumeration_type": "NPI-2",
    "last_updated_epoch": "1761264000000",
    "number": "1699719419",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "PO BOX 459001",
            "city": "GRASS VALLEY",
            "state": "CA",
            "postal_code": "959459101",
            "telephone_number": "530-272-9770",
            "fax_number": "530-272-9796"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "140 LITTON DR STE 110",
            "city": "GRASS VALLEY",
            "state": "CA",
            "postal_code": "959455078",
            "telephone_number": "530-272-9770",
            "fax_number": "530-272-9796"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "organization_name": "SIERRA NEVADA PRIMARY CARE",
        "organizational_subpart": "NO",
        "enumeration_date": "2006-06-15",
        "last_updated": "2025-10-24",
        "certification_date": "2025-10-24",
        "status": "A",
        "authorized_official_last_name": "BEREZNIAK",
        "authorized_official_first_name": "MARA",
        "authorized_official_title_or_position": "DO",
        "authorized_official_telephone_number": "530-432-7023",
        "authorized_official_credential": "DO"
    },
    "taxonomies": [
        {
            "code": "207Q00000X",
            "taxonomy_group": "193200000X MULTI-SPECIALTY GROUP",
            "desc": "Family Medicine",
            "state": "CA",
            "license": "20A79401",
            "primary": true
        },
        {
            "code": "207Q00000X",
            "taxonomy_group": "193200000X MULTI-SPECIALTY GROUP",
            "desc": "Family Medicine",
            "state": "CA",
            "license": "20A7977",
            "primary": false
        },
        {
            "code": "207Q00000X",
            "taxonomy_group": "193200000X MULTI-SPECIALTY GROUP",
            "desc": "Family Medicine",
            "state": "CA",
            "license": "G55765",
            "primary": false
        },
        {
            "code": "207Q00000X",
            "taxonomy_group": "193200000X MULTI-SPECIALTY GROUP",
            "desc": "Family Medicine",
            "state": "CA",
            "license": "G13927",
            "primary": false
        },
        {
            "code": "208000000X",
            "taxonomy_group": "193200000X MULTI-SPECIALTY GROUP",
            "desc": "Pediatrics",
            "state": "CA",
            "license": "G61414",
            "primary": false
        },
        {
            "code": "208000000X",
            "taxonomy_group": "193200000X MULTI-SPECIALTY GROUP",
            "desc": "Pediatrics",
            "state": "CA",
            "license": "A71856",
            "primary": false
        },
        {
            "code": "208000000X",
            "taxonomy_group": "193200000X MULTI-SPECIALTY GROUP",
            "desc": "Pediatrics",
            "state": "CA",
            "license": "G23768",
            "primary": false
        },
        {
            "code": "208000000X",
            "taxonomy_group": "193200000X MULTI-SPECIALTY GROUP",
            "desc": "Pediatrics",
            "state": "CA",
            "license": "G35403",
            "primary": false
        },
        {
            "code": "208000000X",
            "taxonomy_group": "193200000X MULTI-SPECIALTY GROUP",
            "desc": "Pediatrics",
            "state": "CA",
            "license": "A26753",
            "primary": false
        },
        {
            "code": "208000000X",
            "taxonomy_group": "193200000X MULTI-SPECIALTY GROUP",
            "desc": "Pediatrics",
            "state": "CA",
            "license": "G34453",
            "primary": false
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": [
        {
            "organization_name": "Sierra Care Physicians",
            "code": "3",
            "type": "Doing Business As"
        }
    ]
}

• Sierra Nevada Neuropsychology
• Sierra Nevada Neuropsychology Inc.
• Sierra Nevada Pathology Medical Group
• Sierra Nevada Primary Care (Sierra Care Physicians)
• Sierra Nevada Primary Care (Sierra Care Physicians)
• Sierra Nevada Primary Care Physicians a Medical Corporation (Sierra Care Physicians, AMC)
• Sierra Nevada Urology Medical Associates, Inc.
• Sierra Oral & Maxillofacial Surgery, Inc
• Sierra Outpatient Anesthesia Inc
• Sierra Physical Therapy & Rehab Inc

• Family Medicine Physician in Grass Valley, CA
• Providers in Grass Valley, CA by specialty
• Family Medicine Physician in California

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Oct 24, 2025; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
• National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.