Find a Doctor application let you search for a Health Care Provider in the data from National Plan & Provider Enumeration System (NPPES). You can use this tool to find a Health Care provider in your area using the zip code and Specialty. 

Source: https://download.cms.gov/nppes/NPI_Files.html

International Classification of Diseases (ICD-10) Procedure Code and Diagnosis Code Lookup application let you search for Diagnosis code and In-Hospital Procedure Code. 

• WHO Owns and Publishes ICD-10, and in US, CMS Maintains ICD-10-PCS - Procedure Coding System (Inpatient Service)

• CDC Maintains ICD-10-CM - Diagnosis Codes

• ICD-10 is in use since 10/1/2015, and the current edition is 10th.

Source: https://www.cms.gov/medicare/coding-billing/icd-10-codes

Current Procedural Terminology (CPT) Code Lookup application let you search for Outpatient services and procedures. 

• HCPCS Level 1 - 5 digit Numerical

• AMA maintains CPT Codes, and updated annually

Source: https://www.ama-assn.org/amaone/cpt-current-procedural-terminology

Healthcare Common Procedure Coding System (HCPCS) Code Lookup application let you search for Outpatient services and procedures, Equipment, Products, supplies etc

• Level 1- CPT codes for Outpatient services and procedures

• Level 2- Equipment, Products, supplies etc

• CMS maintains Level 2 codes

Source: https://www.cms.gov/medicare/coding-billing/healthcare-common-procedure-system

National Provider Identifier (NPI) Code Lookup application let you search for Health Care Providers in the NPI Registry. 

Source: https://download.cms.gov/nppes/NPI_Files.html

Health Care Provider Taxonomy Code Lookup application let you search for Health Care Provider Taxonomy Code maintained by National Uniform Claim Committe (NUCI). 

Source: https://www.nucc.org/index.php/code-sets-mainmenu-41/provider-taxonomy-mainmenu-40/csv-mainmenu-57

National Drug Code (NDC) Code Lookup application let you search for Medicines in the Drug database. 

• FDA maintains NDC Codes

• NDC directory is updated Daily

Source: https://www.fda.gov/drugs/drug-approvals-and-databases/national-drug-code-directory