WILLIAM CALHOUN MD
NPI 1952324303
Internal Medicine - Cardiovascular Disease in South Weymouth, MA

Q: What is William Calhoun's NPI number?

The NPI number for William Calhoun is 1952324303. It was assigned to this individual provider in the NPPES registry on July 26, 2006.

Q: What is William Calhoun'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 William Calhoun was last updated on July 8, 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 July 26, 2006PECOS EnrolledAccepts Medicare Assignment

77.16/100

CMS Quality Rating

70 PLEASANT ST, SOUTH WEYMOUTH, MA 02190(781) 331-2000(781) 337-6104 Get Directions Write a Review

NPPES record last updated: July 8, 2013. Verified against the NPPES registry weekly; last sync: August 16, 2026.

On this page

About William Calhoun Md NPPES

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

WILLIAM CALHOUN MD (NPI 1952324303) is an individual cardiovascular disease provider in South Weymouth, Massachusetts, licensed in Massachusetts (53819) and active in the NPI registry since July 2006. He is enrolled in Medicare PECOS, is affiliated with South Shore Hospital, and is a graduate of University Of Massachusetts Medical School (1983).

NPPES Registry Identity

NPI1952324303

Entity TypeIndividualMale

Primary Taxonomy207RC0000X

Provider Legal NameWILLIAM CALHOUNCredential: MD

Location Address70 PLEASANT STSouth Weymouth, MA 02190-2427

Mailing Address70 Pleasant StSouth Weymouth, MA 02190-2427 · (781) 331-2000 · Fax (781) 331-6075

Phone(781) 331-2000

Fax(781) 337-6104

Sole ProprietorNo

Medical School CMSUniversity Of Massachusetts Medical SchoolGraduated 1983

Enumeration DateJuly 26, 2006

Last NPPES UpdateJuly 8, 2013

✔ NPI 1952324303 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 MA · 53819

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.

70 PLEASANT ST, South Weymouth, MA 02190

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Other Identifiers 3

Medicare UPINB74999MA

Medicare ID-Type UnspecifiedJ07332MA

Medicaid3034135MA

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Anthem Blue Cross and Blue Shield.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

William Calhoun 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 ID1658328166

PECOS Enrollment IDI20050406001169

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 20

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.

1,051 services893 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.

700 services345 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.

502 services281 patients

Blood test, clotting time 85610

A clotting time blood test helps determine how quickly your blood forms clots, a process crucial to stop bleeding. During the test, a small blood sample is taken from your arm. The sample is then analyzed in a lab to see how long it takes for a clot to form.

241 services21 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.

200 services190 patients

Office or other outpatient visit for the evaluation and management of established patient that may not require presence of healthcare professional 99211

This service involves an outpatient visit for established patients who may not need direct interaction with a healthcare professional. It could include reviewing test results, monitoring existing conditions, or adjusting treatment plans. It's typically done remotely, ensuring your comfort and convenience.

174 services17 patients

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

165 services164 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.

77 services73 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.

69 services60 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.

62 services51 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.

38 services38 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.

32 services32 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.

31 services31 patients

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

25 services24 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.

24 services24 patients

Electrocardiogram (ecg) up to 30 days continuous with transmission of patient triggered events with review and report by health care professional 93229

An Electrocardiogram (ECG) is a test that records your heart's electrical activity for up to 30 days. You trigger a transmission if you feel symptoms, which is then reviewed by a healthcare professional. The report helps diagnose heart conditions.

24 services24 patients

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

19 services19 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.

18 services16 patients

Exercise or drug-induced heart stress test with electrocardiogram (ecg) with supervision and review by physician 93015

An exercise or drug-induced heart stress test with ECG is a procedure performed by a doctor to assess how your heart responds to exertion. It involves monitoring your heart's electrical activity while you exercise or after medication is given to mimic exercise effects.

12 services12 patients

New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more 99203

This service involves an initial office or outpatient visit for a new patient. The healthcare professional will spend 30-44 minutes understanding your health history, current issues, and discussing possible treatment plans. It's a comprehensive evaluation to start your healthcare journey.

11 services11 patients

Hospital Affiliations CMS Care Compare 2

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

South Shore Hospital

Acute Care Hospitals · South Weymouth, MA

4/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number220100

Location55 Fogg RoadSouth Weymouth, MA 02190 · Norfolk County

Emergency services Birthing friendly

Brigham And Women's Hospital

Acute Care Hospitals · Boston, MA

5/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number220110

Location75 Francis StreetBoston, MA 02115 · Suffolk County

Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 02190 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

$144.11 typical visit price

range $63.72 – $189.86

Typical copayment $36.02 (range $15.93 – $47.46)

Most-billed visit code 99204

Established Patient

$78.84 typical visit price

range $21.07 – $155.29

Typical copayment $19.71 (range $5.26 – $38.82)

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.

77.16/100

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

Scored as part of a group practice

Quality

61.89

Improvement Activities

Cost

70.45

Other Providers at the Same Location NPPES 16

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

RONALD W DUNLAP M.D.

Internal Medicine (Cardiovascular Disease)

70 PLEASANT ST, SOUTH SHORE CARDIOLOGY
WEYMOUTH, MA 02190

Norfolk County (781) 331-2000

PRANITHA REDDY M.D.

Internal Medicine (Cardiovascular Disease)

70 PLEASANT ST, BOX 315
SOUTH WEYMOUTH, MA 02190

Norfolk County (781) 331-2000

DONNA E FLYNN RNP

Registered Nurse

70 PLEASANT ST
S WEYMOUTH, MA 02190

Norfolk County (781) 337-1518

CHARLOTTE S BRODY M.D.

Obstetrics & Gynecology (Gynecology)

70 PLEASANT ST
WEYMOUTH, MA 02190

Norfolk County (781) 337-1518

DR. ALEXEI V SHVILKIN M.D.

Internal Medicine (Clinical Cardiac Electrophysiology)

70 PLEASANT ST
SOUTH WEYMOUTH, MA 02190

Norfolk County (781) 331-2000

SYDNEY DUBE LAMBERT

Registered Nurse

70 PLEASANT ST
WEYMOUTH, MA 02190

Norfolk County (781) 812-0927

ELIZABETH LARSEN TAYLOR NP

Nurse Practitioner

70 PLEASANT ST, SOUTH SHORE CARDIOLOGY
WEYMOUTH, MA 02190

Norfolk County (781) 331-2002

SOUTH SHORE MEDICAL CENTER

Clinic/Center (Multi-Specialty)

70 PLEASANT ST
SOUTH WEYMOUTH, MA 02190

Norfolk County (781) 331-2000

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 William Calhoun's NPI number?

The NPI number for William Calhoun is 1952324303. It was assigned to this individual provider in the NPPES registry on July 26, 2006.

Where is William Calhoun located?

William Calhoun practices at 70 Pleasant St, South Weymouth, MA 02190. The listed phone number is (781) 331-2000.

What is William Calhoun's specialty?

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

Is William Calhoun enrolled in Medicare?

Yes. William Calhoun 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 William Calhoun accept?

Health plans from Anthem Blue Cross and Blue Shield list William Calhoun 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 William Calhoun affiliated with any hospitals?

According to CMS data, William Calhoun is affiliated with South Shore Hospital and Brigham And Women's Hospital.

When was this NPI record last updated?

The NPPES record for William Calhoun was last updated on July 8, 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.