GRANT HAROLD HAMMONS III M.D.
NPI 1053429738
Obstetrics & Gynecology in Terre Haute, IN
About Grant Harold Hammons Iii M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
GRANT HAROLD HAMMONS III M.D. (NPI 1053429738) is an individual obstetrics & gynecology provider in Terre Haute, Indiana, licensed in Indiana (01054051A) and active in the NPI registry since August 2006. He is enrolled in Medicare PECOS, is affiliated with Union Hospital Inc, and is a graduate of Medical College Of Ohio (1997).
NPPES Registry Identity
Specialties & Licenses
Other Identifiers 11
Accepted Insurance
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare and accepts Medicare assignment
Grant Harold Hammons Iii M.d. is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.
Medicare Billing Reassignment
Medicare enrollment records show Grant Hammons reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Terre Haute, IN 47807
- Reassigned Medicare billing, Indiana enrollment
- 306 clinicians in this Medicare group
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Areas of Expertise CMS Part B claims 4
Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.
Hospital Affiliations CMS Care Compare
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Union Hospital Inc
Acute Care Hospitals · Terre Haute, INPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 47807 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Other Providers at the Same Location NPPES 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
TERRE HAUTE, IN 47807
TERRE HAUTE, IN 47807
Frequently Asked Questions NPPES & CMS
Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.
What is Grant Hammons's NPI number?
The NPI number for Grant Hammons is 1053429738. It was assigned to this individual provider in the NPPES registry on August 25, 2006.
Where is Grant Hammons located?
Grant Hammons practices at 1429 N 6th St, Terre Haute, IN 47807. The listed phone number is (812) 232-0564.
What is Grant Hammons's specialty?
The primary specialty registered for this NPI is Obstetrics & Gynecology with taxonomy code 207V00000X.
Is Grant Hammons enrolled in Medicare?
Yes. Grant Hammons is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.
Which organization bills Medicare for Grant Hammons's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Grant Hammons reassigns Medicare benefits to Union Associated Physicians Clinic, LLC (Terre Haute, IN). The reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Grant Hammons's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Grant Hammons accept?
Health plans from Anthem Blue Cross and Blue Shield and CareSource list Grant Hammons as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.
Is Grant Hammons affiliated with any hospitals?
According to CMS data, Grant Hammons is affiliated with Union Hospital Inc.
When was this NPI record last updated?
The NPPES record for Grant Hammons was last updated on March 14, 2013. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 13 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.
# Grant Harold Hammons III, M.D. · NPI 1053429738
Obstetrics & Gynecology physician in Terre Haute, Indiana. Individual provider, active in the CMS NPPES registry since August 25, 2006.
## Identity
- **NPI:** 1053429738 (Entity type: Individual)
- **Enumerated:** August 25, 2006
- **Primary specialty:** Obstetrics & Gynecology · taxonomy 207V00000X
- **State license:** 01054051A (Indiana)
- **Sole proprietor:** No
## Practice location
- **Address:** 1429 N 6TH ST, Terre Haute, IN 47807-1037
- **Phone:** (812) 232-0564 · **Fax:** (812) 242-4518
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** Union Associated Physicians Clinic, LLC (NPI 1891028379, Terre Haute, IN), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Medical College Of Ohio, class of 1997
## Record status
- **NPPES last updated:** March 14, 2013
- **Other identifiers:** Medicaid 200331350 (IN); Other P00855807 (IN); Other 000000191999; and 8 more
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Source: [NPI Profile](https://npiprofile.com/npi/1053429738) · Data from the CMS NPPES public registry.