DR. MARK E WILLCOX M.D.
NPI 1336395599
Internal Medicine - Clinical Cardiac Electrophysiology in Anchorage, AK

Q: What is Mark Willcox's NPI number?

The NPI number for Mark Willcox is 1336395599. It was assigned to this individual provider in the NPPES registry on August 7, 2008.

Q: What is Mark Willcox's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Clinical Cardiac Electrophysiology, with taxonomy code 207RC0001X.

Q: When was this NPI record last updated?

The NPPES record for Mark Willcox was last updated on January 14, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 7 months 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 August 07, 2008PECOS EnrolledAccepts Medicare Assignment

3841 PIPER ST, SUITE T-100, ANCHORAGE, AK 99508(907) 561-3211(907) 562-7547 Get Directions Write a Review

NPPES record last updated: January 14, 2026. Verified against the NPPES registry weekly; last sync: August 09, 2026.

Record update history: Jan 14, 2026, May 25, 2021, Aug 15, 2016 and 1 more (4 updates tracked since 2016).

On this page

About Dr. Mark E Willcox M.d. NPPES

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

DR. MARK E WILLCOX M.D. (NPI 1336395599) is an individual clinical cardiac electrophysiology provider in Anchorage, Alaska, licensed in Alaska (110882) and active in the NPI registry since August 2008. He is enrolled in Medicare PECOS and is a graduate of Georgetown University School Of Medicine (2007).

NPPES Registry Identity

NPI1336395599

Entity TypeIndividualMale

Primary Taxonomy207RC0001X

Provider Legal NameDR. MARK E WILLCOXCredential: M.D.

Location Address3841 PIPER ST, SUITE T-100Anchorage, AK 99508-4624

Mailing Address3841 Piper St Ste T100Anchorage, AK 99508-4674 · (907) 561-3211 · Fax (907) 562-7547

Phone(907) 561-3211

Fax(907) 562-7547

Sole ProprietorNo

Medical School CMSGeorgetown University School Of MedicineGraduated 2007

Enumeration DateAugust 7, 2008

Last NPPES UpdateJanuary 14, 20264 updates tracked since enumeration

NPPES CertifiedJanuary 14, 2026

✔ NPI 1336395599 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyInternal Medicine · Clinical Cardiac ElectrophysiologyAllopathic & Osteopathic Physicians

Taxonomy Code207RC0001X

License✔ Licensed in AK · 110882

Definition

A field of special interest within the subspecialty of cardiovascular disease, specialty of Internal Medicine, which involves intricate technical procedures to evaluate heart rhythms and determine appropriate treatment for them.

Also ListedInternal Medicine · Cardiovascular DiseaseTaxonomy 207RC0000X · License 110882 (AK)

3841 PIPER ST, Anchorage, AK 99508

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Other Identifiers 1

Medicaid1649761AK

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Moda Health Plan, Inc., Premera Blue Cross Blue Shield of Alaska, Providence Health Plan.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

Dr. Mark E Willcox M.d. 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 ID4183817034

PECOS Enrollment IDI20160812000443

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 34

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 93000

An electrocardiogram (ECG) is a non-invasive test that records your heart's electrical activity. Using 12 leads attached to your body, it captures data to help identify heart conditions. A doctor interprets the results and provides a report.

608 services534 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.

175 services155 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.

144 services144 patients

Destruction of tissue of upper heart chamber through tube to treat abnormal heart rhythm 93657

This procedure involves using a tube, or catheter, to access your upper heart chamber. Special tools are then used to destroy a small area of heart tissue causing abnormal rhythm. This helps reset your heart's regular rhythm, improving heart function.

96 services60 patients

Programming of heart rhythm stimulation after drug infusion 93623

Programming of heart rhythm stimulation after drug infusion is a process to regulate your heartbeat. After a medication is administered into your body, a device is programmed to monitor and correct irregular heart rhythms, ensuring your heart functions optimally.

78 services78 patients

Comprehensive electrophysiologic evaluation with catheter destruction of abnormality causing atrial fibrillation (uncoordinated contraction of upper chambers of heart) by pulmonary vein isolation 93656

This is a procedure to treat atrial fibrillation, a condition causing irregular heartbeats. It involves a detailed heart evaluation using electrophysiology. A catheter is then used to destroy the problematic area causing the issue. Specifically, isolation of the pulmonary vein is done to regulate the heartbeat.

67 services67 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.

66 services42 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.

64 services63 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.

63 services62 patients

Insertion of catheters and destruction of tissue to treat abnormal heart rhythm 93655

This procedure involves placing small tubes (catheters) into your heart via a blood vessel. These catheters emit energy that corrects irregular heartbeats by eliminating the problematic heart tissue. It's a common, minimally invasive method to treat abnormal heart rhythms.

61 services46 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.

61 services61 patients

Heart rhythm recording of continous external ekg over 8-15 days 93246

A heart rhythm recording is a non-invasive procedure where a small device, attached externally, monitors your heart's electrical activity for 8-15 days. It helps detect irregular heart rhythms, assess heart rate, and guide treatment decisions. It's safe, painless, and can be done during normal daily activities.

59 services59 patients

Heart rhythm review and interpretation of continous external ekg over 8-15 days 93248

This service involves wearing a device for 8-15 days that continuously records your heart's electrical activity. It helps in identifying irregular heart rhythms. The recorded data is then reviewed and interpreted by a healthcare professional for any abnormalities.

59 services59 patients

Insertion of pacemaker and upper and lower heart chamber electrode 33208

A pacemaker insertion is a procedure where a small device, called a pacemaker, is implanted under your skin. This device uses electrical pulses to prompt the heart to beat at a normal rate. Electrodes are placed in the upper and lower chambers of your heart to help regulate your heartbeat.

55 services55 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.

50 services49 patients

Heart rhythm review, and interpretation of continous external ekg over more than 48 hours up to 7 days 93244

A heart rhythm review involves monitoring your heart's electrical activity for more than 48 hours up to 7 days. Using a device called an external EKG, doctors can track your heartbeats to detect irregularities and help diagnose heart conditions.

46 services46 patients

New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more 99205

This is a first-time patient visit where a healthcare professional spends 60-74 minutes with you. It involves a comprehensive evaluation, including your medical history and current health condition. They'll also advise on preventive health measures and formulate a treatment plan if needed.

44 services44 patients

Heart rhythm recording continous external ekg over more than 48 hours up to 7 days 93242

This procedure involves wearing a device, an external EKG, for up to 7 days to continuously monitor your heart rhythm. It helps detect irregularities that may not occur during a standard EKG. The device is non-invasive and safe.

42 services42 patients

Insertion of left lower heart electrode for pacemaker or defibrillator 33225

The procedure involves placing a small electrode in your left lower heart region. This electrode is part of a pacemaker or defibrillator, devices that help regulate your heart rhythm. It's done under local anesthesia, and you may feel mild discomfort.

39 services39 patients

Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more 99215

This service involves a follow-up appointment for existing patients, lasting between 40 to 54 minutes. During this time, your healthcare provider will assess your current health status, discuss any changes or concerns, review your treatment plan, and answer any questions you may have.

37 services37 patients

Destruction of heart conduction tissue to create heart block 93650

This procedure involves destroying a small part of your heart's electrical system to treat abnormal heart rhythms. It creates a block in the heart's electrical pathway, slowing down the heart rate to improve its function.

32 services32 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.

31 services31 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 services19 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.

27 services26 patients

Ultrasound evaluation of heart blood vessel with review by radiologist 93662

This is a noninvasive procedure using sound waves to capture images of your heart's blood vessels. A radiologist, an expert in interpreting these images, will review the results to check for any abnormalities. This helps to monitor your heart health.

27 services27 patients

Repair of left upper heart chamber with implant with review by radiologist 33340

This is a procedure to fix a problem in your left upper heart chamber. An implant is used to correct the issue. After the procedure, a radiologist, a doctor who specializes in medical imaging, reviews the images to ensure everything is in order.

26 services26 patients

Electrocardiogram (ecg) 2-day continuous with review and report by health care professional 93224

An Electrocardiogram (ECG) is a non-invasive test that records the electrical activity of your heart. In a 2-day continuous ECG, sensors attached to your chest monitor your heart's rhythm over 48 hours. A healthcare professional then reviews the data to identify any irregularities.

26 services26 patients

Electrocardiogram (ecg) up to 30 days continuous with review and report by health care professional 93228

An Electrocardiogram (ECG) is a non-invasive test that records the electrical signals in your heart. For up to 30 days, a small device will continuously monitor your heart's activity. A healthcare professional will then review the data and provide a report on your heart's function.

25 services25 patients

Insertion of implantable defibrillator system 33249

The insertion of an implantable defibrillator system is a procedure to manage irregular heart rhythms. A small device is placed under your skin, which monitors your heart rate. If it detects an abnormal rhythm, it sends an electrical pulse to restore normal heartbeat.

16 services16 patients

Comprehensive electrophysiologic evaluation with catheter destruction of abnormality of upper chamber of heart causing supraventricular tachycardia (rapid heart rate) 93653

This procedure is a detailed study of your heart's electrical activity. A thin tube (catheter) is inserted into your heart to identify and eliminate the area causing a fast heart rate. This helps restore normal heart rhythm, specifically targeting the upper chamber of the heart.

16 services16 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.

16 services16 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.

13 services13 patients

Insertion of pacemaker and lower heart chamber electrode 33207

A pacemaker is a small device placed in the chest to control abnormal heart rhythms. This procedure involves inserting the pacemaker and an electrode into the lower heart chamber. The electrode sends electrical signals to help the heart beat at a normal rate.

12 services12 patients

Removal and replacement of multiple lead permanent pacemaker 33229

A multiple lead permanent pacemaker helps regulate your heart rate. If it isn't working properly, it may need to be removed and replaced. The procedure involves a minor surgery where the old device is taken out and a new one is put in its place to ensure your heart functions optimally.

11 services11 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 99508 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

$168.20 typical visit price

range $71.33 – $222.64

Typical copayment $42.05 (range $17.83 – $55.66)

Most-billed visit code 99204

Established Patient

$128.73 typical visit price

range $21.84 – $181.48

Typical copayment $32.18 (range $5.46 – $45.37)

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.

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.

BRYAN FARTHING PA-C

Physician Assistant (Medical)

3841 PIPER ST, SUITE T4-054
ANCHORAGE, AK 99508

Anchorage Municipality (907) 562-6228

EVEN R EVANSON PA-C

Physician Assistant

3841 PIPER ST, SUITE T-100
ANCHORAGE, AK 99508

Anchorage Municipality (907) 561-3211

MS. DENISE C VALENTINE FNP

Nurse Practitioner (Family)

3841 PIPER ST, SUITE T-100
ANCHORAGE, AK 99508

Anchorage Municipality (907) 561-3211

ALASKA UROLOGY, LLC

Urology

3841 PIPER ST, SUITE T300
ANCHORAGE, AK 99508

Anchorage Municipality (907) 563-3103

DR. J. WESLEY TURNER M.D.

Urology

3841 PIPER ST, SUITE T300
ANCHORAGE, AK 99508

Anchorage Municipality (907) 563-3103

JAIME ZIPSIR

Physician Assistant (Medical)

3841 PIPER ST, T300
ANCHORAGE, AK 99508

Anchorage Municipality (907) 563-3103

DR. JAMES E KALLMAN MD

Otolaryngology (Plastic Surgery within the Head & Neck)

3841 PIPER ST, SUITE T230
ANCHORAGE, AK 99508

Anchorage Municipality (907) 279-8800

YIMING WU M.D, PH.D.

Internal Medicine (Clinical Cardiac Electrophysiology)

3841 PIPER ST, SUITE T-100
ANCHORAGE, AK 99508

Anchorage Municipality (907) 561-3211

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 Mark Willcox's NPI number?

The NPI number for Mark Willcox is 1336395599. It was assigned to this individual provider in the NPPES registry on August 7, 2008.

Where is Mark Willcox located?

Mark Willcox practices at 3841 Piper St Suite T-100, Anchorage, AK 99508. The listed phone number is (907) 561-3211.

What is Mark Willcox's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Clinical Cardiac Electrophysiology, with taxonomy code 207RC0001X.

Is Mark Willcox enrolled in Medicare?

Yes. Mark Willcox 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 Mark Willcox accept?

Health plans from Moda Health Plan, Inc., Premera Blue Cross Blue Shield of Alaska and Providence Health Plan list Mark Willcox 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.

When was this NPI record last updated?

The NPPES record for Mark Willcox was last updated on January 14, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 7 months 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.