Active NPI
Sierra Nevada Primary Care
Doing business as Sierra Care Physicians
- Pediatrics Physician
- Grass Valley, CA
National Provider Identifier
1235145608
On this page
Key facts
NPPES NPI Registry- Primary specialty
- Pediatrics Physician
- License
- G61414
- Legal business name
- SIERRA NEVADA PRIMARY CARE
- Doing business as
- Sierra Care Physicians
- Practice address
- 140 Litton Dr Ste 120
Grass Valley, CA 95945-5080 - Phone
- (530) 272-9770
- Fax
- (530) 272-9796
- NPI assigned
- Jul 31, 2006
- Last updated
- Oct 24, 2025
- Organization subpart
- No
NPPES NPI Registry
Registry information is reported by the provider to CMS and is not verified. About this source
Authorized official
- Name
- Mara Berezniak, DO
- Title
- DO
- Phone
- (530) 432-7023
Authorized official NPPES reports the official by name only. The link goes to the one practitioner with that name whose NPPES practice address or phone number is this organization’s.
Specialties & licenses 6
| Specialty (taxonomy) | Code | License | State | Primary |
|---|---|---|---|---|
| Pediatrics Physician | 208000000X | G35403 | CA | |
| Pediatrics Physician | 208000000X | G237680 | CA | |
| Pediatrics Physician | 208000000X | A26753 | CA | |
| Pediatrics Physician | 208000000X | G61414 | CA | Primary |
| Pediatrics Physician | 208000000X | A71856 | CA | |
| Pediatrics Physician | 208000000X | G34453 | CA |
Addresses
Primary practice location
140 Litton Dr Ste 120
Grass Valley, CA 95945-5080
Mailing address
PO Box 459001
Grass Valley, CA 95945-9101
Phone (530) 272-9770
Other names 1
- SIERRA CARE PHYSICIANS
National Provider Directory
National Provider Directory- Tax ID family
- Sierra Nevada Primary Care
Other organizations with this tax ID 4
Organizations that report the same tax identification number in the National Provider Directory.
-
dba Sierra Care Physicians
- Pediatrics Physician
- Grass Valley, CA
- NPI 1548458839
-
dba Sierra Care Physicians
- Family Medicine Physician
- Grass Valley, CA
- NPI 1699719419
-
- Nurse Practitioner
- Penn Valley, CA
- NPI 1952621328
-
dba Sierra Care Physicians, AMC
- Family Medicine Physician
- Grass Valley, CA
- NPI 1427072008
Practitioners & affiliated clinicians
Practitioners 1
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.
-
- Family Medicine Physician
- Penn Valley, CA
- NPI 1770535585
NPI Registry JSON
The complete NPPES record for this NPI in the NPI Registry API format.
{
"created_epoch": "1154304000000",
"enumeration_type": "NPI-2",
"last_updated_epoch": "1761264000000",
"number": "1235145608",
"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 120",
"city": "GRASS VALLEY",
"state": "CA",
"postal_code": "959455080",
"telephone_number": "530-272-9770",
"fax_number": "530-272-9796"
}
],
"practiceLocations": [],
"basic": {
"organization_name": "SIERRA NEVADA PRIMARY CARE",
"organizational_subpart": "NO",
"enumeration_date": "2006-07-31",
"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": "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": "G237680",
"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": "G61414",
"primary": true
},
{
"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": "G34453",
"primary": false
}
],
"identifiers": [],
"endpoints": [],
"other_names": [
{
"organization_name": "SIERRA CARE PHYSICIANS",
"code": "3",
"type": "Doing Business As"
}
]
}Other providers in Grass Valley, CA
- Sierra Nevada Memorial-Miners Hospital (Sierra Nevada Maternal Health Center)
- Sierra Nevada Memorial-Miners Hospital (Sierra Nevada Home Care)
- 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
Sources for this page
- 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.