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Healthcare Workforce Development Division

Maps, GIS and Data

HWDD reviews California's counties Medical Service Study Areas (MSSAs) to assess population density, provider-to-population ratios, poverty levels, and public health indicators for eligibility to receive federal assistance for health care through federally designated Health Professional Shortage Areas (HPSA). The federally designated Medical Service Study Areas (MSSAs) are utilized by HWDD programs to determine funding through analysis of sites in underserved areas.

County Information

Medical Service Study Areas
2013 GIS Shapefile Zipped
GIS Shapefile Zipped – (Census Tracts)
Excel – MSSA
Excel – Census Tracts
2000 GIS Shapefile Zipped PDF Map Excel - Census Tracts
MSSA Definition    
Rural, Urban and Frontier Definition GIS Shapefile PDF Map
MSSA Data Dictionary     Excel
MSSA to Zip Code Crosswalk     Excel
Health Professional Shortage Areas
Primary Care Designation GIS Shapefile Zipped PDF Map
Mental Health Designation GIS Shapefile Zipped PDF Map
Dental Designation GIS Shapefile Zipped PDF Map
Medically Underserved Areas/ Medically Underserved Population
Designation GIS Shapefile Zipped - MUA
GIS Shapefile Zipped - MUP
PDF Map
Other Data
Primary Care Shortage Areas GIS Shapefile Zipped PDF Map Report
Registered Nurse Shortage Areas GIS Shapefile Zipped PDF Map Report
Rural Clinics GIS Shapefile Zipped
Healthcare Facilities GIS Shapefile Zipped
Zip Code GIS Shapefile Zipped – Zip Code
GIS Shapefile Zipped – ZCTA
GIS Contacts
Debra Gonzalez, Research Specialist, GISP

Telephone: (916) 326-3720
Email: Debra.Gonzalez@oshpd.ca.gov