Medicare Administrative Contractor (MAC) State Locality Name 10112 AL ALABAMA 02102 AK ALASKA 03102 AZ ARIZONA 07102 AR ARKANSAS 01112 CA BAKERSFIELD 01112 CA CHICO 01182 CA EL CENTRO 01112 CA FRESNO 01112 CA HANFORD-CORCORAN 01182 CA LOS ANGELES-LONG BEACH-ANAHEIM (LOS ANGELES CNTY) 01182 CA LOS ANGELES-LONG BEACH-ANAHEIM (ORANGE CNTY) 01112 CA MADERA 01112 CA MERCED 01112 CA MODESTO 01112 CA NAPA 01112 CA SAN FRANCISCO-OAKLAND-HAYWARD (ALAMEDA/CONTRA COSTA CNTY) 01182 CA OXNARD-THOUSAND OAKS-VENTURA 01112 CA REDDING 01112 CA RIVERSIDE-SAN BERNARDINO-ONTARIO 01112 CA SACRAMENTO--ROSEVILLE--ARDEN-ARCADE 01112 CA SALINAS 01182 CA SAN DIEGO-CARLSBAD 01112 CA SAN FRANCISCO-OAKLAND-HAYWARD (SAN FRANCISCO CNTY) 01112 CA SAN FRANCISCO-OAKLAND-HAYWARD (MARIN CNTY) 01112 CA SAN JOSE-SUNNYVALE-SANTA CLARA (SAN BENITO CNTY) 01182 CA SAN LUIS OBISPO-PASO ROBLES-ARROYO GRANDE 01112 CA SAN FRANCISCO-OAKLAND-HAYWARD (SAN MATEO CNTY) 01112 CA SAN JOSE-SUNNYVALE-SANTA CLARA (SANTA CLARA CNTY) 01112 CA SANTA CRUZ-WATSONVILLE 01182 CA SANTA MARIA-SANTA BARBARA 01112 CA SANTA ROSA 01112 CA STOCKTON-LODI 01112 CA VALLEJO-FAIRFIELD 01112 CA VISALIA-PORTERVILLE 01112 CA YUBA CITY 01112 CA REST OF CALIFORNIA 04112 CO COLORADO 13102 CT CONNECTICUT 12202 DC DC + MD/VA SUBURBS 12102 DE DELAWARE 09102 FL FORT LAUDERDALE 09102 FL MIAMI 09102 FL REST OF FLORIDA 10212 GA ATLANTA 10212 GA REST OF GEORGIA 01212 HI "HAWAII, GUAM" 02202 ID IDAHO 06102 IL CHICAGO 06102 IL EAST ST. LOUIS 06102 IL SUBURBAN CHICAGO 06102 IL REST OF ILLINOIS 08102 IN INDIANA 05102 IA IOWA 05202 KS KANSAS 15102 KY KENTUCKY 07202 LA NEW ORLEANS 07202 LA REST OF LOUISIANA 14112 ME SOUTHERN MAINE 14112 ME REST OF MAINE 12302 MD BALTIMORE/SURR. CNTYS 12302 MD REST OF MARYLAND 14212 MA METROPOLITAN BOSTON 14212 MA REST OF MASSACHUSETTS 08202 MI DETROIT 08202 MI REST OF MICHIGAN 06202 MN MINNESOTA 07302 MS MISSISSIPPI 05302 MO METROPOLITAN KANSAS CITY 05302 MO METROPOLITAN ST. LOUIS 05302 MO REST OF MISSOURI 03202 MT MONTANA 05402 NE NEBRASKA 01312 NV NEVADA 14312 NH NEW HAMPSHIRE 12402 NJ NORTHERN NJ 12402 NJ REST OF NEW JERSEY 04212 NM NEW MEXICO 13202 NY MANHATTAN 13202 NY NYC SUBURBS/LONG ISLAND 13202 NY POUGHKPSIE/N NYC SUBURBS 13292 NY QUEENS 13282 NY REST OF NEW YORK 11502 NC NORTH CAROLINA 03302 ND NORTH DAKOTA 15202 OH OHIO 04312 OK OKLAHOMA 02302 OR PORTLAND 02302 OR REST OF OREGON 12502 PA METROPOLITAN PHILADELPHIA 12502 PA REST OF PENNSYLVANIA 09202 PR PUERTO RICO 14412 RI RHODE ISLAND 11202 SC SOUTH CAROLINA 03402 SD SOUTH DAKOTA 10312 TN TENNESSEE 04412 TX AUSTIN 04412 TX BEAUMONT 04412 TX BRAZORIA 04412 TX DALLAS 04412 TX FORT WORTH 04412 TX GALVESTON 04412 TX HOUSTON 04412 TX REST OF TEXAS 03502 UT UTAH 14512 VT VERMONT 11302 VA VIRGINIA 09202 VI VIRGIN ISLANDS 02402 WA SEATTLE (KING CNTY) 02402 WA REST OF WASHINGTON 11402 WV WEST VIRGINIA 06302 WI WISCONSIN 03602 WY WYOMING