Greg Warren, DO
NPI 1245270131 · Nephrology Physician · Elizabeth City, NC
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Greg Warren, DO is a Nephrology Physician provider in Elizabeth City, NC (NPI 1245270131).
Provider details
- NPI number
- 1245270131
- Entity type
- Individual
- Primary specialty
- Nephrology PhysicianAllopathic & Osteopathic Physicians
- Credential
- DO
- Sex
- Male
- Sole proprietor
- No
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
20 yrs in NPPES registry
- Profile completeness25% of score
83% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
1,777 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our .
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Routine Electrocardiogram (ecg) Using at Least 12 Leads With Interpretation and Report Only93010 | 373 | $8 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 330 | $84 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes99232 | 260 | $73 |
| Dialysis Services, 4 Or More Physician Visits Per Month (20 Years Or Older)90960 | 213 | $331 |
| Subsequent Hospital Care With Straightforward Or Low Level of Medical Decision Making, Per Day, If Using Time, at Least 25 Minutes99231 | 140 | $46 |
| Home Dialysis Services Per Month (20 Years Or Older) |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 103 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Amlodipine Besylate | 282 | 72 |
| Lisinopril | 252 | 61 |
| Atorvastatin Calcium | 219 | 55 |
| Furosemide | 194 | 56 |
| Hydralazine Hcl | 165 | 43 |
| Losartan Potassium | 144 | 39 |
| Gabapentin | 143 | 37 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$501 across 26 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-06-08
- Last updated
- 2007-10-22
Frequently asked questions
- What is Greg Warren's NPI number?
- Greg Warren's National Provider Identifier (NPI) is 1245270131, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Greg Warren's specialty?
- Greg Warren is listed in the NPPES registry with a primary specialty of Nephrology Physician (Allopathic & Osteopathic Physicians).
- Where is Greg Warren located?
- Greg Warren's practice location on file with NPPES is 206 Hastings Lane, Elizabeth City, NC 27909-3324.
- What is Greg Warren's phone number?
- The practice phone number listed in the NPPES registry for Greg Warren is (252) 335-1083.
- Does Greg Warren accept Medicare?
- Greg Warren is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Greg Warren's NPI active?
- Yes — Greg Warren's NPI (1245270131) is active in the NPPES registry as of the last update on 2007-10-22.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.