JOHN MASON MD
NPI 1447464789
Internal Medicine - Cardiovascular Disease in Parkersburg, WV

Q: What is John Mason's NPI number?

The NPI number for John Mason is 1447464789. It was assigned to this individual provider in the NPPES registry on May 9, 2007.

Q: What is John Mason'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 Mason was last updated on April 30, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 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 May 09, 2007PECOS EnrolledAccepts Medicare Assignment

94.1/100

CMS Quality Rating

600 18TH ST, SUITE 512, PARKERSBURG, WV 26101(304) 424-4574(304) 424-4917 Get Directions Write a Review

NPPES record last updated: April 30, 2026. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Apr 30, 2026, Jun 26, 2025, Apr 18, 2022 and 1 more (4 updates tracked since 2021).

On this page

About John Mason Md NPPES

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

JOHN MASON MD (NPI 1447464789) is an individual cardiovascular disease provider in Parkersburg, West Virginia, licensed in West Virginia (22957) and active in the NPI registry since May 2007. He is enrolled in Medicare PECOS, is affiliated with Marietta Memorial Hospital, and maintains 4 additional practice locations.

NPPES Registry Identity

NPI1447464789

Entity TypeIndividualMale

Primary Taxonomy207RC0000X

Provider Legal NameJOHN MASONCredential: MD

Location Address600 18TH ST, SUITE 512Parkersburg, WV 26101-3231

Mailing Address600 18th St Ste 512Parkersburg, WV 26101-3236 · (304) 424-4574 · Fax (304) 424-4917

Phone(304) 424-4574

Fax(304) 424-4917

Sole ProprietorNo

Medical School CMSOtherGraduated 2002

Enumeration DateMay 9, 2007

Last NPPES UpdateApril 30, 20264 updates tracked since enumeration

NPPES CertifiedApril 30, 2026

✔ NPI 1447464789 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal Medicine · Cardiovascular DiseaseAllopathic & Osteopathic Physicians

Taxonomy Code207RC0000X

Licenses✔ Licensed in WV · 22957✔ Licensed in OH · 35.095222

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.

600 18TH ST, Parkersburg, WV 26101

Open in Google Maps ↗

Secondary Practice Locations 4

Location 1314 S Wells St Ste 100Sistersville, WV 26175-1098 · Phone (304) 447-2447

Location 2802 Wayne ST STE 202Marietta, OH 45750-3300 · Phone (740) 568-5207 · Fax (740) 568-5297

Location 3803 Farson St Ste 400Belpre, OH 45714-1073 · Phone (740) 568-5207

Location 4400 Matthew St Ste 302Marietta, OH 45750-1656 · Phone (740) 568-5207

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Anthem Blue Cross and Blue Shield, CareSource, Highmark Blue Cross Blue Shield West Virginia.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

John Mason Md 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 ID2264502418

PECOS Enrollment IDI20080530000714, I20250627001903

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 John Mason reassigns Medicare billing to 5 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Camden-Clark Physician Corporation

0.8 mi

Surgery

604 ANN ST
Parkersburg, WV 26101

Reassigned Medicare billing, West Virginia enrollment
461 clinicians in this Medicare group

NPI 1710125430 (304) 424-4593

Marietta Memorial Hospital Of Tyler County Inc

10 mi

Rural Health

424 HIGHLAND AVE
Williamstown, WV 26187

Reassigned Medicare billing, West Virginia enrollment
Also billed through NPI 1811595192 (West Virginia)
38 clinicians in this Medicare group

NPI 1972302388 (740) 568-4190

Mhc Physicians Inc

10 mi

Internal Medicine

424 HIGHLAND AVE
Williamstown, WV 26187

Reassigned Medicare billing, West Virginia enrollment
49 clinicians in this Medicare group

NPI 1073600219 (740) 568-4190

Selby General Hospital

10 mi

Rural Health

40 WHITE OAK PROFESSIONAL CTR
Vincent, OH 45784

Reassigned Medicare billing, Ohio enrollment
Also billed through NPI 1124073465 (Ohio)
105 clinicians in this Medicare group

NPI 1740089150 (740) 678-2374

Marietta Memorial Hospital

12 mi

General Acute Care Hospital

401 MATTHEW ST
Marietta, OH 45750

Reassigned Medicare billing, Ohio and West Virginia enrollments
411 clinicians in this Medicare group

NPI 1215936927 (740) 374-1413

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 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.

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.

1,888 services1,595 patients

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.

363 services354 patients

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.

279 services221 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.

269 services231 patients

Exercise or drug-induced heart stress test with electrocardiogram (ecg) with supervision by physician 93016

An exercise or drug-induced heart stress test with ECG involves monitoring your heart's activity while it's under stress, either from exercise or medication. A doctor supervises the entire procedure to ensure safety and accuracy in results. This test helps detect heart problems.

184 services183 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.

184 services183 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.

175 services159 patients

Anticoagulant management of patient taking warfarin 93793

Anticoagulant management with warfarin involves monitoring and adjusting your medication to prevent blood clots while minimizing the risk of bleeding. Regular blood tests measure your response to warfarin, helping adjust your dose if necessary. It's crucial to maintain a consistent diet and promptly report any changes in your health.

134 services69 patients

Ultrasound of both sides of head and neck blood flow 93880

An ultrasound of the head and neck blood flow is a safe, non-invasive procedure that uses sound waves to create images of blood vessels. It helps detect abnormalities like blockages or clots, ensuring optimal blood flow.

117 services115 patients

Nuclear medicine studies of heart muscle at rest and with stress and spect 78452

Nuclear medicine studies of the heart involve two parts: rest and stress. During rest, images are taken of your heart at ease. During stress, images are taken after exercise or medication-induced stress. SPECT is a special imaging technique providing 3D pictures of your heart, helping identify any issues.

109 services109 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.

95 services90 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.

77 services61 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.

74 services74 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.

62 services35 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.

50 services50 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.

40 services35 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.

39 services34 patients

Physician review, interpretation, and patient management of home inr testing for patient with either mechanical heart valve(s), chronic atrial fibrillation, or venous thromboembolism who meets medicare coverage criteria; testing not occurring more frequent G0250

This service involves your doctor evaluating your home INR (a blood clotting test) results. It's for patients with a mechanical heart valve, chronic atrial fibrillation, or venous thromboembolism who meet specific criteria. It helps manage your treatment, but tests aren't conducted frequently.

38 services31 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.

33 services28 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.

25 services25 patients

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

18 services18 patients

Insertion of tube in left lower heart chamber and coronary artery for diagnosis with review by radiologist 93458

This procedure involves placing a tube into your left lower heart chamber and coronary artery. It helps doctors diagnose heart conditions by allowing them to view these areas in detail. A radiologist will review the images to ensure accurate diagnosis.

17 services17 patients

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

16 services16 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.

14 services12 patients

Ultrasound study of arm and leg arteries 93922

An ultrasound study of arm and leg arteries is a non-invasive procedure that uses sound waves to create images of your arteries. It helps in checking blood flow, identifying blockages, or detecting other abnormalities in your arteries.

14 services14 patients

Hospital Affiliations CMS Care Compare 5

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

Marietta Memorial Hospital

Acute Care Hospitals · Marietta, OH

4/5 CMS rating

OwnershipVoluntary non-profit - Other

CMS Certification Number360147

Location401 Matthew StreetMarietta, OH 45750 · Washington County

Emergency services Birthing friendly

Selby General Hospital

Critical Access Hospitals · Marietta, OH

OwnershipVoluntary non-profit - Private

CMS Certification Number361319

Location1106 Colegate DriveMarietta, OH 45750 · Washington County

Emergency services

Camden Clark Medical Center

Acute Care Hospitals · Parkersburg, WV

3/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number510058

Location800 Garfield AveParkersburg, WV 26101 · Wood County

Emergency services Birthing friendly

Sistersville General Hospital

Critical Access Hospitals · Sistersville, WV

OwnershipVoluntary non-profit - Private

CMS Certification Number511304

Location314 South Wells StreetSistersville, WV 26175 · Tyler County

Emergency services

Jackson General Hospital

Critical Access Hospitals · Ripley, WV

OwnershipVoluntary non-profit - Private

CMS Certification Number511320

Location122 Pinnell StRipley, WV 25271 · Jackson County

Emergency services

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 26101 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

$124.46 typical visit price

range $53.20 – $164.59

Typical copayment $31.11 (range $13.30 – $41.14)

Most-billed visit code 99204

Established Patient

$66.84 typical visit price

range $16.47 – $133.29

Typical copayment $16.71 (range $4.11 – $33.32)

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.

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.

94.1/100

MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program

Scored through an Alternative Payment Model

Quality

78.46

Promoting Interoperability

100

Improvement Activities

Referred Medical Equipment & Supplies CMS DME claims

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

Oxygen concentrator, single delivery port, capable of delivering 85 percent or greater oxygen concentration at the prescribed flow rate E1390

DME-Oxygen and Supplies · category DC002N

3 suppliers15 claims15 services$71.74 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 20

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

DR. HEMANT MODI

Internal Medicine (Cardiovascular Disease)

600 18TH ST, SUITE 512
PARKERSBURG, WV 26101

Wood County (304) 424-4574

MISS MINIYA BERHANE M.D.

Pediatrics

600 18TH ST, SUITE 601
PARKERSBURG, WV 26101

Wood County (304) 424-4106

DIGESTIVE CARE CENTER, PLLC

Internal Medicine (Gastroenterology)

600 18TH ST, SUITE 401
PARKERSBURG, WV 26101

Wood County (304) 424-4330

MRS. LYNDSEY JANELL KUHN MSN, APRN, FNP-BC

Nurse Practitioner (Family)

600 18TH ST, SUITE 512
PARKERSBURG, WV 26101

Wood County (304) 424-4574

PAIN MANAGEMENT CENTER

Pain Medicine (Interventional Pain Medicine)

600 18TH ST
PARKERSBURG, WV 26101

Wood County (304) 422-4040

CHARLES F. WHITAKER MD INC.

Dentist

600 18TH ST, SUITE 304
PARKERSBURG, WV 26101

Wood County (304) 424-4961

PARKERSBURG FAMILY MED ASSOC PLLC

Family Medicine

600 18TH ST, SUITE 611
PARKERSBURG, WV 26101

Wood County (304) 424-4870

HENSHAW ORTHOPAEDICS, INC.

Orthopaedic Surgery

600 18TH ST, SUITE 610
PARKERSBURG, WV 26101

Wood County (304) 424-4741

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 Mason's NPI number?

The NPI number for John Mason is 1447464789. It was assigned to this individual provider in the NPPES registry on May 9, 2007.

Where is John Mason located?

John Mason practices at 600 18th St Suite 512, Parkersburg, WV 26101. The listed phone number is (304) 424-4574.

What is John Mason's specialty?

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

Is John Mason enrolled in Medicare?

Yes. John Mason 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 John Mason's services?

According to the CMS Revalidation Reassignment List (October 2026 release), John Mason reassigns Medicare benefits to 5 organizations: Camden-Clark Physician Corporation (Parkersburg, WV), Marietta Memorial Hospital Of Tyler County Inc (Williamstown, WV), Mhc Physicians Inc (Williamstown, WV), Selby General Hospital (Vincent, OH) and Marietta Memorial Hospital (Marietta, OH). 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 John Mason's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does John Mason accept?

Health plans from Anthem Blue Cross and Blue Shield, CareSource and Highmark Blue Cross Blue Shield West Virginia list John Mason 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 Mason affiliated with any hospitals?

According to CMS data, John Mason is affiliated with Marietta Memorial Hospital, Selby General Hospital, Camden Clark Medical Center, Sistersville General Hospital and Jackson General Hospital.

When was this NPI record last updated?

The NPPES record for John Mason was last updated on April 30, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 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.