GREG A WARREN DO
NPI 1245270131
Internal Medicine - Nephrology in Elizabeth City, NC

Q: What is Greg Warren's NPI number?

The NPI number for Greg Warren is 1245270131. It was assigned to this individual provider in the NPPES registry on June 8, 2006.

Q: What is Greg Warren's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Nephrology, with taxonomy code 207RN0300X.

Q: When was this NPI record last updated?

The NPPES record for Greg Warren was last updated on October 22, 2007. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 19 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.

Active since June 08, 2006PECOS EnrolledAccepts Medicare Assignment

206 HASTINGS LANE, ELIZABETH CITY, NC 27909(252) 335-1083(252) 335-4030 Get Directions Write a Review

NPPES record last updated: October 22, 2007. Verified against the NPPES registry weekly; last sync: October 25, 2026.

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About Greg A Warren Do NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

GREG A WARREN DO (NPI 1245270131) is an individual nephrology provider in Elizabeth City, North Carolina and active in the NPI registry since June 2006. He is enrolled in Medicare PECOS, is affiliated with Vidant Roanoke Chowan Hospital, and is a graduate of Rowan University School Of Osteopathic Medicine (2001).

NPPES Registry Identity

NPI1245270131

Entity TypeIndividualMale

Primary Taxonomy207RN0300X

Provider Legal NameGREG A WARRENCredential: DO

Location Address206 HASTINGS LANEElizabeth City, NC 27909-3324

Mailing Address206 Hastings LaneElizabeth City, NC 27909-3324 · (252) 335-1083 · Fax (252) 335-4030

Phone(252) 335-1083

Fax(252) 335-4030

Sole ProprietorNo

Medical School CMSRowan University School Of Osteopathic MedicineGraduated 2001

Enumeration DateJune 8, 2006

Last NPPES UpdateOctober 22, 2007

✔ NPI 1245270131 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal Medicine · NephrologyAllopathic & Osteopathic Physicians

Taxonomy Code207RN0300X

Definition

An internist who treats disorders of the kidney, high blood pressure, fluid and mineral balance and dialysis of body wastes when the kidneys do not function. This specialist consults with surgeons about kidney transplantation.

206 HASTINGS LANE, Elizabeth City, NC 27909

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Other Identifiers 5

Medicare PIN2403289ANC

Other142ERNC · Blue Cross Blue Shield

Medicaid5903364NC

OtherP00391176NC · Rail Road Medicare

Medicare UPINI60618NC

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Blue Cross and Blue Shield of NC.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Greg A Warren Do is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID4688670649

PECOS Enrollment IDI20061013000519

Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Medicare Billing Reassignments

Medicare enrollment records show Greg Warren reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Albemarle Nephrology PLLC

Same address

Nephrology

206 HASTINGS LANE
Elizabeth City, NC 27909

Reassigned Medicare billing, North Carolina enrollment
5 clinicians in this Medicare group

NPI 1861555799 (252) 335-1083

Sentara Albemarle Regional Medical Center

3.4 mi

General Acute Care Hospital

3050 HALSTEAD BLVD
Elizabeth City, NC 27909

Reassigned Medicare billing, North Carolina enrollment
10 clinicians in this Medicare group

NPI 1154708436 (252) 384-4600

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Areas of Expertise CMS Part B claims 16

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only 93010

A routine electrocardiogram (ECG) with 12 leads is a simple, non-invasive test that records the electrical activity of your heart. It helps in identifying heart conditions by detecting irregularities in your heart rhythms. The results are interpreted and a report is provided.

373 services323 patients

Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more 99214

This is a routine check-up for patients who have previously visited our clinic. It involves a comprehensive review of your health and any ongoing treatments. The consultation lasts between 30-39 minutes, allowing enough time to discuss any concerns.

330 services160 patients

Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes 99232

Follow-up hospital inpatient care involves daily check-ups while you're admitted in the hospital. Typically, a healthcare provider spends about 25 minutes each day reviewing your condition, adjusting treatment if needed, and answering any questions you might have.

260 services87 patients

Dialysis services, 4 or more physician visits per month (20 years or older) 90960

Dialysis is a treatment that filters and purifies your blood using a machine. It helps keep your fluids and electrolytes in balance when the kidneys can't do their job. This service includes 4 or more visits per month with a physician to monitor your health and adjust your treatment as needed.

213 services42 patients

Subsequent hospital care with straightforward or low level of medical decision making, per day, if using time, at least 25 minutes 99231

Follow-up hospital inpatient care is a daily service where a healthcare professional checks on your health progress during your hospital stay. Each session typically lasts 15 minutes, involving updates on your condition and adjustments to your treatment plan, if necessary.

140 services75 patients

Home dialysis services per month (20 years or older) 90966

Home dialysis services provide kidney treatment for patients aged 20 or older right in their own homes. This service includes necessary equipment, supplies, and support for performing dialysis. It's a convenient option that allows patients to maintain their daily routines while receiving essential care.

112 services30 patients

Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more 99213

This is a routine visit for patients who have already been seen by the healthcare provider. During this approximately 20-29 minute appointment, your health status will be evaluated and any necessary treatments or tests will be discussed. It's a chance to address any health concerns you may have.

88 services75 patients

Dialysis services, 2-3 physician visits per month (20 years or older) 90961

Dialysis is a treatment that performs the function of healthy kidneys if they're not working properly. It removes waste and excess fluid from your blood. 2-3 physician visits per month are recommended for monitoring your health and adjusting your treatment as needed. This service is available for those aged 20 years and older.

62 services32 patients

Influenza vaccine, inactivated 90653

The Influenza vaccine, inactivated, is a shot given to protect against the flu. It contains killed virus particles that help your body build immunity to the flu. It's recommended annually to keep your protection up-to-date. It's safe for ages 6 months and up.

42 services42 patients

Administration of influenza virus vaccine G0008

The administration of the influenza virus vaccine, also known as the flu shot, is a simple procedure to protect against the flu. A healthcare provider injects a small dose of the vaccine into your arm. This stimulates your immune system to produce antibodies, which will help your body fight off the flu if exposed.

42 services42 patients

Urinalysis, manual test 81002

A urinalysis is a simple, non-invasive test that checks the urine for various elements such as sugar, protein, and signs of infection. It can help detect many common conditions, including kidney disease and diabetes. The manual test involves a lab technician examining a urine sample.

40 services35 patients

Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more 99214

35 services20 patients

Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes 99222

Initial hospital inpatient care is a service where a healthcare provider spends about 50 minutes per day overseeing your care while you're admitted in the hospital. This includes reviewing your health status, planning your treatment, and ensuring your safety and comfort.

27 services27 patients

New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more 99204

This is a first-time office or outpatient visit lasting between 45-59 minutes. The healthcare provider evaluates your health, discusses your medical history, and may suggest further tests or treatments. It's an opportunity to ask questions and understand your health better.

20 services20 patients

New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more 99204

19 services19 patients

Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more 99213

16 services15 patients

Hospital Affiliations CMS Care Compare 5

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

Vidant Roanoke Chowan Hospital

Acute Care Hospitals · Ahoskie, NC

2/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number340099

Location500 S Academy StAhoskie, NC 27910 · Hertford County

Emergency services Birthing friendly

Sentara Albemarle Medical Center

Acute Care Hospitals · Elizabeth City, NC

3/5 CMS rating

OwnershipGovernment - Hospital District or Authority

CMS Certification Number340109

Location1144 N Road StElizabeth City, NC 27909 · Pasquotank County

Emergency services Birthing friendly

The Outer Banks Hospital, Inc

Critical Access Hospitals · Nags Head, NC

4/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number341324

Location4800 South Croatan HighwayNags Head, NC 27959 · Dare County

Emergency services Birthing friendly

Sentara Norfolk General Hospital

Acute Care Hospitals · Norfolk, VA

3/5 CMS rating

OwnershipVoluntary non-profit - Other

CMS Certification Number490007

Location600 Gresham DrNorfolk, VA 23507 · Norfolk City County

Emergency services Birthing friendly

Sentara Virginia Beach General Hospital

Acute Care Hospitals · Virginia Beach, VA

4/5 CMS rating

OwnershipVoluntary non-profit - Other

CMS Certification Number490057

Location1060 First Colonial RoadVirginia Beach, VA 23454 · Virginia Beach City County

Emergency services

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 27909 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient

$125.01 typical visit price

range $54.12 – $165.09

Typical copayment $31.25 (range $13.53 – $41.27)

Most-billed visit code 99204

Established Patient

$95.94 typical visit price

range $17.21 – $134.61

Typical copayment $23.98 (range $4.30 – $33.65)

Most-billed visit code 99214

Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Medicare Quality Performance CMS QPP · MIPS

Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.

Reported Quality Measures

Diabetes: Medical Attention for Nephropathy

The percentage of patients 18-75 years of age with diabetes who had a nephropathy screening test or evidence of nephropathy during the measurement period

91%158 patients4/55-star benchmark: 100%

Documentation of Current Medications in the Medical Record

Percentage of visits for patients aged 18 years and older for which the eligible professional or eligible clinician attests to documenting a list of current medications using all immediate resources available on the date of the encounter.

100%1,060 patients5/55-star benchmark: 100%

e-Prescribing

At least one permissible prescription written by the MIPS eligible clinician is queried for a drug formulary and transmitted electronically using certified EHR technology.

74%237 patients3/55-star benchmark: 100%

Patient-Specific Education

The MIPS eligible clinician must use clinically relevant information from CEHRT to identify patient-specific educational resources and provide access to those materials to at least one unique patient seen by the MIPS eligible clinician.

3%217 patients1/55-star benchmark: 100%

Preventive Care and Screening: Body Mass Index (BMI) Screening and Follow-Up Plan

Percentage of patients aged 18 years and older with a BMI documented during the current encounter or during the previous twelve months AND with a BMI outside of normal parameters, a follow-up plan is documented during the encounter or during the previous…

86%497 patients4/55-star benchmark: 100%

Preventive Care and Screening: Unhealthy Alcohol Use: Screening & Brief Counseling

Percentage of patients aged 18 years and older who were screened for unhealthy alcohol use using a systematic screening method at least once within the last 24 months AND who received brief counseling if identified as an unhealthy alcohol user

93%286 patients4/55-star benchmark: 100%

Provide Patient Access

At least one patient seen by the MIPS eligible clinician during the performance period is provided timely access to view online, download, and transmit to a third party their health information subject to the MIPS eligible clinician's discretion to withhold…

98%217 patients4/55-star benchmark: 100%

Secure Messaging

For at least one unique patient seen by the MIPS eligible clinician during the performance period, a secure message was sent using the electronic messaging function of CEHRT to the patient (or the patient-authorized representative), or in response to a secure…

27%217 patients2/55-star benchmark: 79%

Providers report different measures because they deliver different services; reporting more or less information is not a reflection of quality. Star ratings appear only where CMS assigned them.

Referred Medical Equipment & Supplies CMS DME claims 16

Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.

Blood glucose test or reagent strips for home blood glucose monitor, per 50 strips A4253

DME-Other DME · category DE017N

10 suppliers33 claims115 services$6.64 avg. paid by Medicare

Full face mask used with positive airway pressure device, each A7030

DME-Other DME · category DE001N

1 supplier12 claims12 services$119.88 avg. paid by Medicare

Face mask interface, replacement for full face mask, each A7031

DME-Other DME · category DE001N

1 supplier13 claims35 services$44.74 avg. paid by Medicare

Portable gaseous oxygen system, rental; includes portable container, regulator, flowmeter, humidifier, cannula or mask, and tubing E0431

DME-Oxygen and Supplies · category DC000N

2 suppliers22 claims22 services$21.28 avg. paid by Medicare

Humidifier, heated, used with positive airway pressure device E0562

DME-Other DME · category DE001N

1 supplier18 claims18 services$17.51 avg. paid by Medicare

Continuous positive airway pressure (cpap) device E0601

DME-Other DME · category DE001N

2 suppliers20 claims20 services$44.19 avg. paid by Medicare

Dollar amounts are the average Medicare paid the supplier per service. They are not the cost to the patient.

Other Providers at the Same Location NPPES

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

ALBEMARLE NEPHROLOGY PLLC

Internal Medicine (Nephrology)

206 HASTINGS LANE
ELIZABETH CITY, NC 27909

Pasquotank County (252) 335-1083

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Greg Warren's NPI number?

The NPI number for Greg Warren is 1245270131. It was assigned to this individual provider in the NPPES registry on June 8, 2006.

Where is Greg Warren located?

Greg Warren practices at 206 Hastings Lane, Elizabeth City, NC 27909. The listed phone number is (252) 335-1083.

What is Greg Warren's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Nephrology, with taxonomy code 207RN0300X.

Is Greg Warren enrolled in Medicare?

Yes. Greg Warren is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

Which organizations bill Medicare for Greg Warren's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Greg Warren reassigns Medicare benefits to 2 organizations: Albemarle Nephrology PLLC (Elizabeth City, NC) and Sentara Albemarle Regional Medical Center (Elizabeth City, NC). Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Greg Warren's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Greg Warren accept?

Health plans from Blue Cross and Blue Shield of NC list Greg Warren as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

Is Greg Warren affiliated with any hospitals?

According to CMS data, Greg Warren is affiliated with Vidant Roanoke Chowan Hospital, Sentara Albemarle Medical Center, The Outer Banks Hospital, Inc, Sentara Norfolk General Hospital and Sentara Virginia Beach General Hospital.

When was this NPI record last updated?

The NPPES record for Greg Warren was last updated on October 22, 2007. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 19 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.