Greg A. Warren, DO
Nephrology Physician · Elizabeth City, NC
Greg A. Warren, DO is a nephrology physician with a practice address in Elizabeth City, North Carolina, and NPI 1245270131, issued on Jun 8, 2006. Check the license on the North Carolina Medical Board; the Medicare figures below come from public CMS files.
- Name
- Greg A. Warren
- Credential
- DO
- Primary taxonomy
- Nephrology Physician 207RN0300X
- Practice location
- 206 Hastings Lane, Elizabeth City, NC 27909
- Phone
- (252) 335-1083
- Enumerated
- Jun 8, 2006
- Record last updated
- Oct 22, 2007 (not updated in 19 years: call before relying on the address or phone)
- Fax
- (252) 335-4030
- Medicaid ID
- 5903364 NC
- Medicare enrollment
- Enrolled (PECOS I20061013000519); accepts Medicare assignment
- Medical or professional school
- Rowan University School Of Osteopathic Medicine, 2001
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest nephrology physician records → All 403 in North Carolina → Look up another NPI →
Verify Greg A. Warren in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersNorth Carolina Medical BoardCheck the board
- 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
3.7 times the Medicare Part D claims of the average nephrology physician in 2024
5,445 Medicare Part D claims for 457 beneficiaries, against an average of 1,465 among the 10,986 providers of this specialty who prescribed in Part D. Brand-name drugs were 14% of claims. 109 claims were for opioids.
Most prescribed
- Amlodipine Besylate282 claims
- Lisinopril252 claims
- Atorvastatin Calcium219 claims
- Furosemide194 claims
- Hydralazine Hcl165 claims
- Losartan Potassium144 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: $500.63
26 payments; by number, the most common kind was food and beverage; the largest payer was Amgen Inc. The 8,230 providers of this specialty with any payment received $3,091.37 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 3 group practices
- Albemarle Nephrology PLLCElizabeth City, NC
- Broad River RehabilitationCharlotte, NC
- Sentara Albemarle Regional Medical CenterElizabeth City, NC
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Greg A. Warren among 403 nephrology physician records in North Carolina
Greg A. Warren, DO is one of 403 nephrology physician records with a practice address in North Carolina. 86% 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 17% of them.
- NPI issued2006 · 17% of these records are older, 50% newer
- In a Medicare fileYes · 86% of these records are
- In the CMS Doctors and Clinicians fileYes · 77% of these records are
- Graduated2001 · median 2002 among the 310 with a school on file
- Record last updated2007 · 47% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RN0300X and a North Carolina practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Nephrology Physician providers in North Carolina
There are 403 nephrology physician records in North Carolina.
All 403 in North Carolina → Every provider in Elizabeth City → Nephrology Physician nationwide →
The 8 nephrology physician records with the nearest ZIP codes
- Karl Brandspigel, MDElizabeth City, NC 279091104810498
- Stewart Manning, M.D.Elizabeth City, NC 279091104897537
- Ravi Ramsamooj, MDElizabeth City, NC 279091124012406
- Anwar Al-HaidaryWilson, NC 278931205829066
- Robert Bynum, MDWilson, NC 278931477525111
- Nirav Jasani, MDWilson, NC 278931215229612
- Dhruva Chawla, MDWashington, NC 278891245430727
- Danilo Bernardo, MDRoanoke Rapids, NC 278701669409835
Common questions
What is Greg A. Warren, DO's NPI number?
Greg A. Warren, DO's National Provider Identifier (NPI) is 1245270131, issued on Jun 8, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Greg A. Warren, DO located?
The NPPES record lists a practice address at 206 Hastings Lane, Elizabeth City, NC, 27909. Phone: (252) 335-1083. Providers update this record themselves, so call before visiting.
How can I verify Greg A. Warren, DO's license?
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 Greg A. Warren, DO prescribe under Medicare Part D?
In 2024, Greg A. Warren, DO had 5,445 Medicare Part D claims for 457 beneficiaries; the average among nephrology physician prescribers was 1,465. 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.