Mary Ann Guillermo Barker, LVN
Licensed Vocational Nurse · Grass Valley, CA
Mary Ann Guillermo Barker, LVN is a licensed vocational nurse with a practice address in Grass Valley, California, and NPI 1831812346, issued on Sep 20, 2022. Check the license (California VN147889, as entered in NPPES) with the California board that licenses this profession; the federal record below is the public data PlainDoctor holds for this provider.
- Name
- Mary Ann Guillermo Barker
- Credential
- LVN
- Primary taxonomy
- Licensed Vocational Nurse 164X00000X
- License number
- VN147889 CA
Self-reported in NPPES; status is on the state search - Practice location
- 500 Crown Point Cir, Grass Valley, CA 95945
- Phone
- (530) 265-1437
- Enumerated
- Sep 20, 2022
- Record last updated
- Sep 20, 2022
- Entity
- Type 1 · individual
Also registered at 500 Crown Point Cir
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Kim AlbaneseMental Health Counselor1720453004
- Kathleen Anderson, MS, PSYCHOLOGYStudent in an Organized Health Care Education/Training Program1447746235
- Gabriel BarberMarriage & Family Therapist1114797990
- Amanda BeckBehavior Technician1376274068
- Adrienne BergLicensed Vocational Nurse1063960318
- Nicole BernasconiCounselor1851717342
Verify Mary Ann Guillermo Barker in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this profession
Search for license VN147889Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
32 licensed vocational nurse records list a practice address in Grass Valley
They are 32 of the 1,540 NPPES records with a practice address in Grass Valley, and 10,699 licensed vocational nurse records in California. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.
All 32 in Grass Valley → All 10,699 in California → Every provider in Grass Valley →
Other licensed vocational nurse records in California
- Aubra AaronLos Angeles, CA1285330431
- Rolhando Aaron, LVNSan Jose, CA1740784867
- Adrienne Nisha AbadSacramento, CA1366109647
- Carolyn Ann Abalon, LVNOrange, CA1487167987
- Ashlee Abalos, LVNFresno, CA1467176214
- Jauda AbalosFresno, CA1780886226
- Benjamin Abarca, LVNOrange, CA1992539779
- Judith AbarcaHuntington Park, CA1851746689
- Marie Eugene Abarientos, MDPort Hueneme, CA1891310926
- Alvin AbasCompton, CA1992557748
Common questions
What is Mary Ann Guillermo Barker, LVN's NPI number?
Mary Ann Guillermo Barker, LVN's National Provider Identifier (NPI) is 1831812346, issued on Sep 20, 2022. An NPI identifies a provider in billing; it is not a license.
Where is Mary Ann Guillermo Barker, LVN located?
The NPPES record lists a practice address at 500 Crown Point Cir, Grass Valley, CA, 95945. Phone: (530) 265-1437. Providers update this record themselves, so call before visiting.
How can I verify Mary Ann Guillermo Barker, LVN's license?
NPPES lists California license number VN147889, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.