David Seignious, M.D.
Internal Medicine Physician · Johns Island, SC
David Seignious, M.D. is an internal medicine physician with a practice address in Johns Island, South Carolina, and NPI 1891726287, issued on Jul 5, 2006. Check the license (South Carolina 13235, as entered in NPPES) on the South Carolina Board of Medical Examiners; the Medicare figures below come from public CMS files.
- Name
- David Seignious
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 13235 SC
Self-reported in NPPES; status is on the state search - Practice location
- 3312 Maybank Hwy, Johns Island, SC 29455
- Phone
- (843) 557-1111
- Enumerated
- Jul 5, 2006
- Record last updated
- Apr 10, 2012 (not updated in 14 years: call before relying on the address or phone)
- Fax
- (843) 557-1050
- Medicaid IDs
- GP3693 SC
132350 SC - Medicare enrollment
- Enrolled (PECOS I20040423000786); accepts Medicare assignment
- Medical or professional school
- Medical University Of South Carolina College Of Medicine, 1984
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 1,881 in South Carolina → Look up another NPI →
Also registered at 3312 Maybank Hwy
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Natalie Emanuel, N.P.Nurse Practitioner1861888752
Verify David Seignious in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersSouth Carolina Board of Medical Examiners
Search for license 13235Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
37% fewer Medicare Part D claims than the average internal medicine physician in 2024
1,998 Medicare Part D claims for 234 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. 13 claims were for opioids.
Most prescribed
- Amlodipine Besylate142 claims
- Atorvastatin Calcium109 claims
- Losartan Potassium100 claims
- Metformin Hcl78 claims
- Simvastatin77 claims
- Lisinopril74 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.
David Seignious among 1,881 internal medicine physician records in South Carolina
David Seignious, M.D. is one of 1,881 internal medicine physician records with a practice address in South Carolina. 81% 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 7% of them.
- NPI issued2006 · 7% of these records are older, 58% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileYes · 60% of these records are
- Graduated1984 · median 2006 among the 1,119 with a school on file
- Record last updated2012 · 46% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a South Carolina practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
7 internal medicine physician records list a practice address in Johns Island
They are 7 of the 205 NPPES records with a practice address in Johns Island, and 1,881 internal medicine physician records in South Carolina.
All 1,881 in South Carolina → Every provider in Johns Island → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- George Book, MDJohns Island, SC 294551972127637
- Dominique Bultsma, MDJohns Island, SC 294551033733704
- James Byer, MDKiawah Island, SC 294551891930483
- Bernard Mansheim, MDJohns Island, SC 294551568820173
- C Martin, MDJohns Island, SC 294551023179504
- Brittney Rodriguez, MDJohns Island, SC 294551083357792
- Margaret Roth, MDJohns Island, SC 294551740805449
- Michael Otruba, D.O.Ladson, SC 294561649255316
Common questions
What is David Seignious, M.D.'s NPI number?
David Seignious, M.D.'s National Provider Identifier (NPI) is 1891726287, issued on Jul 5, 2006. An NPI identifies a provider in billing; it is not a license.
Where is David Seignious, M.D. located?
The NPPES record lists a practice address at 3312 Maybank Hwy, Johns Island, SC, 29455. Phone: (843) 557-1111. Providers update this record themselves, so call before visiting.
How can I verify David Seignious, M.D.'s license?
NPPES lists South Carolina license number 13235, 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 David Seignious, M.D. prescribe under Medicare Part D?
In 2024, David Seignious, M.D. had 1,998 Medicare Part D claims for 234 beneficiaries; the average among internal medicine physician prescribers was 3,176. 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.