Regina E. Hammock, D.O.
Emergency Medicine Physician · Cayce, SC
Regina E. Hammock, D.O. is an emergency medicine physician with a practice address in Cayce, South Carolina, and NPI 1922086107, issued on Jan 6, 2006. Check the license (South Carolina 87861, as entered in NPPES) on the South Carolina Board of Medical Examiners; the Medicare figures below come from public CMS files.
- Name
- Regina E. Hammock
- Credential
- D.O.
- Primary taxonomy
- Emergency Medicine Physician 207P00000X
- License numbers
- 87861 SC
199422-1 NY
Self-reported in NPPES; status is on the state search - Practice location
- 1111 Knox Abbott Dr, Cayce, SC 29033
- Phone
- (803) 314-0660
- Enumerated
- Jan 6, 2006
- Record last updated
- Aug 28, 2024
- Fax
- (803) 314-0661
- Medicaid ID
- 01579620 NY
- Medicare enrollment
- Enrolled (PECOS I20221122003673); accepts Medicare assignment
- Medical or professional school
- New York College Of Osteo Medicine Of New York Institute Of Technology, 1991
- Entity
- Type 1 · individual
8 nearest emergency medicine physician records → All 1,244 in South Carolina → Look up another NPI →
Also registered at 1111 Knox Abbott Dr
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Loraine Heller, D.O.Family Medicine Physician1164798633
- Holly Wheeling, MDEmergency Medicine Physician1700812153
Verify Regina E. Hammock in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersSouth Carolina Board of Medical Examiners
Search for license 87861Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
8% fewer Medicare Part D claims than the average emergency medicine physician in 2024
207 Medicare Part D claims for 156 beneficiaries, against an average of 226 among the 54,106 providers of this specialty who prescribed in Part D. Brand-name drugs were 13% of claims.
Most prescribed
- Cephalexin15 claims
- Azithromycin14 claims
- Paxlovid12 claims
- Amoxicillin-Clavulanate Potass11 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Industry payments in 2024: $13.53
1 payment: food and beverage; the largest payer was Janssen Pharmaceuticals, Inc. The 12,335 providers of this specialty with any payment received $953.79 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- Lexington Health IncChapin, SC
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Regina E. Hammock among 1,244 emergency medicine physician records in South Carolina
Regina E. Hammock, D.O. is one of 1,244 emergency medicine physician records with a practice address in South Carolina. 84% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 6% of them.
- NPI issued2006 · 6% of these records are older, 65% newer
- In a Medicare fileYes · 84% of these records are
- In the CMS Doctors and Clinicians fileYes · 60% of these records are
- Graduated1991 · median 2012 among the 752 with a school on file
- Record last updated2024 · 51% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207P00000X and a South Carolina practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
2 emergency medicine physician records list a practice address in Cayce
They are 2 of the 222 NPPES records with a practice address in Cayce, and 1,244 emergency medicine physician records in South Carolina.
All 1,244 in South Carolina → Every provider in Cayce → Emergency Medicine Physician nationwide →
The 8 emergency medicine physician records with the nearest ZIP codes
- Holly Wheeling, MDCayce, SC 290331700812153
- Douglas Brash, DODenmark, SC 290421780633693
- Jennifer Abrams, D.O.Elgin, SC 290451104899210
- Ralph Hess, DOCamden, SC 290201417065681
- Carter Killion, MDCamden, SC 290201336257013
- Anthony Mullins, M.D.Columbia, SC 290201861535114
- Quoc Nguyen, MDCamden, SC 290201043298789
- Narendra Patel, MDCamden, SC 290201750369518
Common questions
What is Regina E. Hammock, D.O.'s NPI number?
Regina E. Hammock, D.O.'s National Provider Identifier (NPI) is 1922086107, issued on Jan 6, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Regina E. Hammock, D.O. located?
The NPPES record lists a practice address at 1111 Knox Abbott Dr, Cayce, SC, 29033. Phone: (803) 314-0660. Providers update this record themselves, so call before visiting.
How can I verify Regina E. Hammock, D.O.'s license?
NPPES lists South Carolina license number 87861, as entered by the provider. Search the South Carolina Board of Medical Examiners at https://verify.llronline.com/LicLookup/Med/Med.aspx?div=22. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Regina E. Hammock, D.O. prescribe under Medicare Part D?
In 2024, Regina E. Hammock, D.O. had 207 Medicare Part D claims for 156 beneficiaries; the average among emergency medicine physician prescribers was 226. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.