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

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: July 26, 2026.

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

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
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

Secondary Practice Locations 4

Location 1802 Wayne ST STE 202Marietta, OH 45750-3300 · Phone (740) 568-5207 · Fax (740) 568-5297
Location 2803 Farson St Ste 400Belpre, OH 45714-1073 · Phone (740) 568-5207
Location 3400 Matthew St Ste 302Marietta, OH 45750-1656 · Phone (740) 568-5207
Location 4314 S Wells St Ste 100Sistersville, WV 26175-1098 · Phone (304) 447-2447

Accepted 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 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.

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

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
Quality78.46
Promoting Interoperability100
Improvement Activities40

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.

Internal Medicine (Cardiovascular Disease)
600 18TH ST, SUITE 512
PARKERSBURG, WV 26101
Pediatrics
600 18TH ST, SUITE 601
PARKERSBURG, WV 26101
Internal Medicine (Gastroenterology)
600 18TH ST, SUITE 401
PARKERSBURG, WV 26101
Nurse Practitioner (Family)
600 18TH ST, SUITE 512
PARKERSBURG, WV 26101
Pain Medicine (Interventional Pain Medicine)
600 18TH ST
PARKERSBURG, WV 26101
Dentist
600 18TH ST, SUITE 304
PARKERSBURG, WV 26101
Family Medicine
600 18TH ST, SUITE 611
PARKERSBURG, WV 26101
Orthopaedic Surgery
600 18TH ST, SUITE 610
PARKERSBURG, WV 26101

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.

What insurance does John Mason accept?

Health plans from Ambetter Health, Ambetter from Buckeye Health Plan, Ambetter from Meridian, Anthem Blue Cross and Blue Shield and CareSource and 2 other insurers 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 with the weekly NPPES data releases published by CMS.