Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Harold Jason Blalock, M.D.
Urology Physician in Jackson, MS · enumerated 2006.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1730118696
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Registry record
Entity type Individual (Type 1)
Name Harold Jason Blalock
Credential M.D.
Sex Male
Practice address 501 Marshall St. Suite 301, Jackson, MS, 39202
Phone (601) 353-9900
Fax (601) 353-3654
Enumeration date Jul 2, 2006
Last updated in NPPES Aug 1, 2019
Taxonomy & licenses
MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure.
About the MD credential
Other identifiers
| Identifier | Type | State | Issuer |
|---|---|---|---|
| 0124443 | Medicaid | MS | - |
| 02701951231 | Other | MS | AMERICAN MEDICAL ASSOC. |
| 340019033 | Other | MS | MEDICARE - RAILROAD |
| 13012 | Other | MS | AMERICAN BOARD OF UROLOGY |
What is an NPI number?
A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes, even if the provider moves or changes specialty.
Frequently asked questions
What is the NPI number for Harold Blalock?
The National Provider Identifier (NPI) for Harold Blalock is 1730118696, a Type 1 (individual) record in the CMS NPPES registry.
Where does Harold Blalock practice?
The practice location on file with NPPES is in Jackson, MS. Providers can have multiple locations; NPPES lists the primary practice address.
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2019-08-01.