JOHN ALEXANDER
NPI 1831282094
Internal Medicine - Cardiovascular Disease in Durham, NC

Q: What is John Alexander's NPI number?

The NPI number for John Alexander is 1831282094. It was assigned to this individual provider in the NPPES registry on October 2, 2006.

Q: What is John Alexander's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Cardiovascular Disease, with taxonomy code 207RC0000X.

Q: When was this NPI record last updated?

The NPPES record for John Alexander was last updated on March 21, 2013. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 13 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 October 02, 2006PECOS EnrolledAccepts Medicare Assignment

DUKE UNIVERSITY MEDICAL CTR, DURHAM, NC 27710(919) 620-4467 Get Directions Write a Review

NPPES record last updated: March 21, 2013. Verified against the NPPES registry weekly; last sync: August 09, 2026.

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About John Alexander NPPES

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

JOHN ALEXANDER (NPI 1831282094) is an individual cardiovascular disease provider in Durham, North Carolina, licensed in North Carolina (96-00017) and active in the NPI registry since October 2006. He is enrolled in Medicare PECOS, is affiliated with Duke University Hospital, and is a graduate of Perelman School Of Med At The University Of Pennsylvania (1993).

NPPES Registry Identity

NPI1831282094

Entity TypeIndividualMale

Primary Taxonomy207RC0000X

Provider Legal NameJOHN ALEXANDER

Location AddressDUKE UNIVERSITY MEDICAL CTRDurham, NC 27710-0001

Mailing AddressDuke University Medical Ctr, Dumc 3300Durham, NC 27710-0001

Phone(919) 620-4467

Sole ProprietorNo

Medical School CMSPerelman School Of Med At The University Of PennsylvaniaGraduated 1993

Enumeration DateOctober 2, 2006

Last NPPES UpdateMarch 21, 2013

✔ NPI 1831282094 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal Medicine · Cardiovascular DiseaseAllopathic & Osteopathic Physicians

Taxonomy Code207RC0000X

License✔ Licensed in NC · 96-00017

Definition

An internist who specializes in diseases of the heart and blood vessels and manages complex cardiac conditions such as heart attacks and life-threatening, abnormal heartbeat rhythms.

DUKE UNIVERSITY MEDICAL CTR, Durham, NC 27710

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Other Identifiers 3

Medicaid891130FNC

Medicare ID-Type Unspecified2242277ANC

Medicare UPING66072

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Ambetter from Absolute Total Care, Ambetter of North Carolina, Ambetter of Tennessee and more.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

John Alexander 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 ID9931244480

PECOS Enrollment IDI20100308000944

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.

Areas of Expertise CMS Part B claims 25

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.

Ultrasound of heart with color-depicted blood flow, rate, direction and valve function 93306

This is a heart ultrasound, also known as an echocardiogram. It uses sound waves to create pictures of your heart, showing how blood flows through it. The color depicts the blood flow's speed and direction. It also checks the heart's valves to ensure they're working properly.

499 services483 patients

Heart muscle strain imaging 93356

Heart muscle strain imaging is a non-invasive test that uses sound waves to create pictures of your heart. It helps doctors evaluate how well your heart muscle is working and detect any damage or disease. This can aid in diagnosing heart conditions and guiding treatment plans.

333 services326 patients

3d radiographic procedure with computerized image postprocessing 76377

A 3D radiographic procedure with computerized image postprocessing is a high-tech imaging test. It uses X-rays to create detailed 3D images of the body. The computerized postprocessing further enhances these images for more precise diagnosis and treatment planning.

249 services244 patients

Ultrasound of heart with color-depicted blood flow, rate, direction and valve function 93306

223 services223 patients

Heart muscle strain imaging 93356

190 services190 patients

3d radiographic procedure with computerized image postprocessing 76377

83 services83 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.

74 services69 patients

External shock to heart to regulate heart beat 92960

This procedure, known as cardioversion, uses an external electrical shock to restore your heart's normal rhythm. It's typically performed when irregular heartbeats, or arrhythmias, are causing severe symptoms and aren't responding to medications.

57 services56 patients

Ultrasound of heart with color-depicted blood flow, rate and valve function 93325

An ultrasound of the heart, also known as an echocardiogram, uses sound waves to create pictures of your heart. It shows the structure, movement, and blood flow within your heart. This helps assess the heart's health and function, including the valves and rate.

55 services53 patients

Ultrasound of heart blood flow, valves and chambers, follow-up 93321

This procedure, an echocardiogram, uses sound waves to create images of your heart. It aids in assessing your heart's blood flow, chambers, and valves. It's a follow-up procedure, ensuring that your heart is functioning properly post-treatment.

51 services48 patients

Ultrasound of heart, follow-up 93308

A follow-up ultrasound of the heart, also known as an echocardiogram, is a non-invasive test that uses sound waves to create images of your heart. It helps doctors monitor your heart's function and structures after initial assessment or treatment.

48 services44 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.

36 services21 patients

Exercise or drug-induced heart stress test with electrocardiogram (ecg) with review by physician 93018

An exercise or drug-induced heart stress test with ECG is a procedure to assess how your heart functions under stress. It can involve exercising or medication to make your heart work harder while an ECG records its activity. A physician reviews the results.

34 services34 patients

Ultrasound of heart with color-depicted blood flow, rate and valve function 93325

34 services34 patients

Ultrasound of heart with continuous electrocardiogram (ecg) during rest, exercise and/or drug induced stress with review and report 93351

This procedure involves using ultrasound technology to create images of your heart while you rest, exercise, or undergo drug-induced stress. An ECG continuously monitors your heart's electrical activity. It helps doctors assess heart health and function.

34 services34 patients

Ultrasound of heart with probe in esophagus, with report 93312

This procedure, called a transesophageal echocardiogram, uses a small probe passed into your esophagus to capture detailed images of your heart. The report provides information about your heart's structure and function.

33 services32 patients

Ultrasound of heart blood flow, valves and chambers 93320

An ultrasound of your heart, also known as an echocardiogram, is a test that uses sound waves to create detailed images of your heart. It helps doctors check the health of your heart's chambers, valves, and blood flow.

33 services33 patients

Injection, perflutren lipid microspheres, per ml Q9957

Perflutren lipid microspheres injection, per ml, is a diagnostic tool used to enhance ultrasound images. It contains tiny gas-filled bubbles that improve the clarity of the images, aiding in a more accurate diagnosis.

31 services30 patients

Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes 99233

Follow-up hospital inpatient care per day typically involves a 35-minute check-up by your healthcare provider. This service includes monitoring your health progress, adjusting your treatment plan if needed, and answering any questions you may have about your condition or care.

30 services20 patients

Ultrasound of heart during rest, exercise and/or drug-induced stress with report 93350

This procedure involves using ultrasound imaging to view your heart at rest, during exercise, and/or under drug-induced stress. It helps assess how well your heart responds to exertion. A report of the findings is provided after the test.

26 services26 patients

Hospital discharge day management, more than 30 minutes 99239

Hospital discharge day management over 30 minutes involves a detailed process to ensure a smooth transition from hospital to home. It includes final examinations, discussion of your hospital stay, post-discharge instructions, and coordinating follow-up care.

24 services24 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

3d radiographic procedure 76376

A 3D radiographic procedure is a non-invasive imaging test that helps doctors visualize the internal structures of your body in three dimensions. This advanced technology provides detailed images, aiding in accurate diagnosis and treatment planning. It involves exposure to minimal radiation.

17 services17 patients

Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes 99223

Initial hospital inpatient care per day, typically 70 minutes, refers to the daily medical service provided to patients admitted to the hospital. This includes a comprehensive evaluation, diagnosis, treatment plan, and monitoring of your health condition. It ensures your well-being during your hospital stay.

17 services17 patients

Ultrasound of heart blood flow, valves and chambers 93320

15 services15 patients

Hospital Affiliations CMS Care Compare 2

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

Duke University Hospital

Acute Care Hospitals · Durham, NC

5/5 CMS rating

OwnershipProprietary

CMS Certification Number340030

Location2100 Erwin RdDurham, NC 27705 · Durham County

Emergency services Birthing friendly

Duke Regional Hospital

Acute Care Hospitals · Durham, NC

4/5 CMS rating

OwnershipGovernment - Local

CMS Certification Number340155

Location3643 N Roxboro StreetDurham, NC 27704 · Durham County

Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 27710 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

$67.72 typical visit price

range $17.21 – $134.61

Typical copayment $16.93 (range $4.30 – $33.65)

Most-billed visit code 99213

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

Other Providers at the Same Location NPPES 20

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

MEGAN MCVAY PHD

Psychologist (Clinical)

DUKE UNIVERSITY MEDICAL CTR, DEPARTMENT OF PSYCHIATRY
DURHAM, NC 27710

Durham County (919) 668-7216

MICHELLE BAILEY M.D.

Pediatrics

DUKE UNIVERSITY MEDICAL CTR
DURHAM, NC 27710

Durham County (919) 620-4467

JEFFREY CRAWFORD M.D.

Internal Medicine (Hematology & Oncology)

DUKE UNIVERSITY MEDICAL CTR
DURHAM, NC 27710

Durham County (919) 620-4467

CHARLES GERARDO M.D.

Emergency Medicine

DUKE UNIVERSITY MEDICAL CTR
DURHAM, NC 27710

Durham County (919) 620-4467

KALEY TASH

Internal Medicine

DUKE UNIVERSITY MEDICAL CTR
DURHAM, NC 27710

Durham County (727) 510-0883

REID CAMERON CHAMBERLAIN M.D.

Pediatrics (Pediatric Cardiology)

DUKE UNIVERSITY MEDICAL CTR, BOX 3951
DURHAM, NC 27710

Durham County (919) 684-3491

MEGAN CLOWSE

Internal Medicine (Rheumatology)

DUKE UNIVERSITY MEDICAL CTR
DURHAM, NC 27710

Durham County (919) 620-4467

NICOLE CALAKOS M.D., PH.D

Neurological Surgery

DUKE UNIVERSITY MEDICAL CTR
DURHAM, NC 27710

Durham County (919) 620-4467

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 John Alexander's NPI number?

The NPI number for John Alexander is 1831282094. It was assigned to this individual provider in the NPPES registry on October 2, 2006.

Where is John Alexander located?

John Alexander practices at Duke University Medical Ctr, Durham, NC 27710. The listed phone number is (919) 620-4467.

What is John Alexander's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Cardiovascular Disease, with taxonomy code 207RC0000X.

Is John Alexander enrolled in Medicare?

Yes. John Alexander 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.

What insurance does John Alexander accept?

Health plans from Ambetter from Absolute Total Care, Ambetter of North Carolina, Ambetter of Tennessee and Blue Cross and Blue Shield of NC list John Alexander 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 John Alexander affiliated with any hospitals?

According to CMS data, John Alexander is affiliated with Duke University Hospital and Duke Regional Hospital.

When was this NPI record last updated?

The NPPES record for John Alexander was last updated on March 21, 2013. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 13 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.