Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
NPIDirectory

Dr. Robert Houston Hardin Jr., MD

Individual provider Diagnostic Radiology Physician · NPI 1225083942

Dr. Robert Houston Hardin Jr., MD practises Diagnostic Radiology in Ridgeland, Mississippi. Qualified in 1998, 28 years ago. Practices with St Clair Professional Services Inc, a 74-clinician group, works from 7 locations and accepts Medicare assignment. Licensed in Connecticut, Florida, Michigan and Mississippi.

Years since qualifying
28
Licensed in
CT, FL, MI, MS
In the registry since
2006
Specialties on file
4
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

113 W Jackson St
Ridgeland, MS 39157-2401
Phone: (601) 499-2873
Fax: (601) 355-7170
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (6)

  • 263 Farmington Ave, Farmington, CT 06030-0001 — (860) 679-2789
  • 4250 Hospital Dr, Marianna, FL 32446-1917 — (850) 526-2200
  • 4660 S Hagadorn Rd Ste 410, East Lansing, MI 48823-6819 — (517) 353-5053
  • 4660 S Hagadorn Rd Ste 510, East Lansing, MI 48823-6805 — (517) 353-5053
  • 3220 Discovery Dr Ste 100, Lansing, MI 48910-8609 — (517) 975-8930
  • 2210 Heritage Hill Dr, Jackson, MS 39211-5821 — (601) 354-4327

Specialties & licences

Diagnostic Radiology Physician (primary) Taxonomy 2085R0202X · Licence 18490 (MS)
Diagnostic Radiology Physician Taxonomy 2085R0202X · Licence EMC0006070 (MI)
Diagnostic Radiology Physician Taxonomy 2085R0202X · Licence 080766 (CT)
Diagnostic Radiology Physician Taxonomy 2085R0202X · Licence ME180516 (FL)

Record details

NPI number1225083942
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedMay 23, 2006
Last updated in NPPESApril 21, 2026
Certification dateApril 21, 2026

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyDIAGNOSTIC RADIOLOGY
Medical schoolOTHER
Graduated 1998 (28 years in practice)
Group practice St Clair Professional Services Inc — 74 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations9 on file with Medicare

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients3,818
Services billed 5,878 a service is one billed item, such as a visit, a test or a procedure
Average patient age75

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician. Those with a page here are linked.

Colleagues at St Clair Professional Services Inc

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 74 clinicians in the practice; 12 are shown here.

Other providers in Ridgeland