Ziad Gellad, MD, MPH
Internal Medicine Physician · Durham, NC
Ziad Gellad, MD, MPH is an internal medicine physician with a practice address in Durham, North Carolina, and NPI 1447421664, issued on Mar 15, 2008. Check the license (North Carolina 2006-01065, as entered in NPPES) on the North Carolina Medical Board; the Medicare figures below come from public CMS files.
- Name
- Ziad Gellad
- Credential
- MD, MPH
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 2006-01065 NC
Self-reported in NPPES; status is on the state search - Practice location
- Duke University Medical Center, Durham, NC 27710
- Phone
- (919) 286-0411
- Enumerated
- Mar 15, 2008
- Record last updated
- Apr 20, 2012 (not updated in 14 years: call before relying on the address or phone)
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 4,056 in North Carolina → Look up another NPI →
Also registered at Duke University Medical Center
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Ziad Gellad in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersNorth Carolina Medical Board
Search for license 2006-01065Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
99% fewer Medicare Part D claims than the average internal medicine physician in 2024
39 Medicare Part D claims for 16 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 0% of claims.
Most prescribed
- Omeprazole32 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: $1,677.50
2 payments; by number, the most common kind was consulting fee; the largest payer was Merck Sharp & Dohme LLC. The 50,334 providers of this specialty with any payment received $1,303.06 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.
Ziad Gellad among 4,056 internal medicine physician records in North Carolina
Ziad Gellad, MD, MPH is one of 4,056 internal medicine physician records with a practice address in North Carolina. 82% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2008, is newer than 57% of them.
- NPI issued2008 · 57% of these records are older, 39% newer
- In a Medicare fileYes · 82% of these records are
- In the CMS Doctors and Clinicians fileNo · 67% of these records are
- Record last updated2012 · 48% 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 North Carolina practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
380 internal medicine physician records list a practice address in Durham
They are 380 of the 13,451 NPPES records with a practice address in Durham, and 4,056 internal medicine physician records in North Carolina.
All 4,056 in North Carolina → Every provider in Durham → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Martha Adams, M.D.Durham, NC 277101073606018
- Swati Agrawal, M.D.Durham, NC 277101922191188
- Cheryl Baker, MDDurham, NC 277101356430813
- Richard Frothingham, M.D.Durham, NC 277101912088493
- David Gallagher, MDDurham, NC 277101376575746
- Rania KazanDurham, NC 277101588748495
- James Kelly, MD, MBADurham, NC 277101922004191
- Mary Klotman, MDDurham, NC 277101003846411
Common questions
What is Ziad Gellad, MD, MPH's NPI number?
Ziad Gellad, MD, MPH's National Provider Identifier (NPI) is 1447421664, issued on Mar 15, 2008. An NPI identifies a provider in billing; it is not a license.
Where is Ziad Gellad, MD, MPH located?
The NPPES record lists a practice address at Duke University Medical Center, Durham, NC, 27710. Phone: (919) 286-0411. Providers update this record themselves, so call before visiting.
How can I verify Ziad Gellad, MD, MPH's license?
NPPES lists North Carolina license number 2006-01065, as entered by the provider. Search the North Carolina Medical Board at https://portal.ncmedboard.org/verification/search.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Ziad Gellad, MD, MPH prescribe under Medicare Part D?
In 2024, Ziad Gellad, MD, MPH had 39 Medicare Part D claims for 16 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.