O'NEIL R MASON M.D.
NPI 1699046748
Internal Medicine - Cardiovascular Disease in Morristown, NJ

Q: What is O'neil Mason's NPI number?

The NPI number for O'neil Mason is 1699046748. It was assigned to this individual provider in the NPPES registry on January 21, 2012.

Q: What is O'neil 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 O'neil Mason was last updated on September 1, 2022. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 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 January 21, 2012PECOS EnrolledAccepts Medicare Assignment

100 MADISON AVE, MORRISTOWN, NJ 07960(973) 971-7416(973) 401-2470 Get Directions Write a Review

NPPES record last updated: September 1, 2022. Verified against the NPPES registry weekly; last sync: August 09, 2026.

Record update history: Sep 1, 2022, Jun 25, 2020, Feb 11, 2016 (3 updates tracked since 2016).

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About O'neil R Mason M.d. NPPES

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

O'NEIL R MASON M.D. (NPI 1699046748) is an individual cardiovascular disease provider in Morristown, New Jersey, licensed in New Jersey (25MA11494000) and active in the NPI registry since January 2012. He is enrolled in Medicare PECOS, is affiliated with Morristown Medical Center, and maintains a secondary practice location in Chicago.

NPPES Registry Identity

NPI1699046748

Entity TypeIndividualMale

Primary Taxonomy207RC0000X

Provider Legal NameO'NEIL R MASONCredential: M.D.

Location Address100 MADISON AVEMorristown, NJ 07960-6136

Mailing AddressPo Box 416457Boston, MA 02241-6457 · (844) 362-1735 · Fax (973) 290-7495

Phone(973) 971-7416

Fax(973) 401-2470

Sole ProprietorYes

Medical School CMSOtherGraduated 2005

Enumeration DateJanuary 21, 2012

Last NPPES UpdateSeptember 1, 20223 updates tracked since enumeration

NPPES CertifiedSeptember 1, 2022

✔ NPI 1699046748 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyInternal Medicine · Cardiovascular DiseaseAllopathic & Osteopathic Physicians

Taxonomy Code207RC0000X

Licenses✔ Licensed in NJ · 25MA11494000✔ Licensed in IL · 036152383

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.

Also ListedInternal MedicineTaxonomy 207R00000X · License 266546 (NY)

100 MADISON AVE, Morristown, NJ 07960

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Secondary Practice Location 1

Location 1676 N Saint Clair StChicago, IL 60611-2927 · Phone (312) 926-2000

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Ambetter Health, Ambetter Health of Delaware.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

O'neil R Mason 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 ID9436455789

PECOS Enrollment IDI20220915000416

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 10

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.

379 services344 patients

Ultrasound of heart with probe in esophagus during surgery on heart or great blood vessels with report 93355

This procedure, known as a transesophageal echocardiogram, involves placing a probe in your esophagus to capture detailed images of your heart during surgery. It helps surgeons monitor heart function and guide treatment. A report will follow.

170 services170 patients

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

146 services144 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.

81 services74 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.

60 services58 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.

58 services57 patients

Hospital Affiliations CMS Care Compare 2

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

Morristown Medical Center

Acute Care Hospitals · Morristown, NJ

5/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number310015

Location100 Madison AveMorristown, NJ 07960 · Morris County

Emergency services Birthing friendly

Overlook Medical Center

Acute Care Hospitals · Summit, NJ

4/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number310051

Location99 Beauvoir AvenueSummit, NJ 07901 · Union County

Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 07960 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

$144.86 typical visit price

range $63.84 – $190.92

Typical copayment $36.21 (range $15.96 – $47.73)

Most-billed visit code 99204

Established Patient

$79.09 typical visit price

range $20.97 – $155.92

Typical copayment $19.77 (range $5.24 – $38.98)

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.

MELISSA LOPES M.D

Anesthesiology