MR. WILLIAM D DILLON MD
NPI 1689656373
Internal Medicine - Cardiovascular Disease in Wrentham, MA

Q: What is William Dillon's NPI number?

The NPI number for William Dillon is 1689656373. It was assigned to this individual provider in the NPPES registry on November 17, 2005.

Q: What is William Dillon'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 Dillon was last updated on December 27, 2019. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 6 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 November 17, 2005PECOS EnrolledAccepts Medicare Assignment

844 FRANKLIN ST, 4, WRENTHAM, MA 02093(508) 384-2500(508) 384-9410 Get Directions Write a Review

NPPES record last updated: December 27, 2019. Verified against the NPPES registry weekly; last sync: October 25, 2026.

On this page

About Mr. William D Dillon Md NPPES

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

MR. WILLIAM D DILLON MD (NPI 1689656373) is an individual cardiovascular disease provider in Wrentham, Massachusetts, licensed in Massachusetts (50050) and active in the NPI registry since November 2005. He is enrolled in Medicare PECOS, is affiliated with Brigham And Women's Hospital, and is a graduate of University Of Massachusetts Medical School (1981).

NPPES Registry Identity

NPI1689656373

Entity TypeIndividualMale

Primary Taxonomy207RC0000X

Provider Legal NameMR. WILLIAM D DILLONCredential: MD

Location Address844 FRANKLIN ST, 4Wrentham, MA 02093-1223

Mailing Address844 Franklin St, Unit 2Wrentham, MA 02093-1223 · (508) 384-5000 · Fax (508) 384-6124

Phone(508) 384-2500

Fax(508) 384-9410

Sole ProprietorNo

Medical School CMSUniversity Of Massachusetts Medical SchoolGraduated 1981

Enumeration DateNovember 17, 2005

Last NPPES UpdateDecember 27, 2019

✔ NPI 1689656373 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 · 50050

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.

844 FRANKLIN ST, Wrentham, MA 02093

Open in Google Maps ↗

Other Identifiers 1

Medicaid3010449MA

Accepted Insurance

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

Mr. William D Dillon 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 ID1658327044

PECOS Enrollment IDI20050329000845

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 Reassignment

Medicare enrollment records show William Dillon reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Norfolk County Medical Associates,inc.

Same address

Cardiovascular Disease

844 FRANKLIN ST, SUITE 2
Wrentham, MA 02093

Reassigned Medicare billing, Massachusetts enrollment

NPI 1033539036 (508) 384-5000

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 15

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.

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.

278 services154 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.

218 services144 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.

105 services62 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.

92 services87 patients

Evaluation of single, dual, multiple lead or leadless pacemaker system or implantable defibrillator system, remote up to 90 days 93296

This procedure involves remotely monitoring your pacemaker or implantable defibrillator system. Over a 90-day period, we check the device's performance and your heart's activity. This helps ensure the device is functioning properly and providing the best possible support for your heart health.

62 services30 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.

49 services47 patients

Evaluation of single, dual, multiple lead or leadless pacemaker system, remote up to 90 days 93294

This procedure evaluates your pacemaker system remotely for up to 90 days. It checks whether single, dual, multiple lead, or leadless pacemakers are working properly. It's a safe, convenient way to ensure your heart device is functioning optimally.

38 services21 patients

Administration of influenza virus vaccine G0008

The administration of the influenza virus vaccine, also known as the flu shot, is a simple procedure to protect against the flu. A healthcare provider injects a small dose of the vaccine into your arm. This stimulates your immune system to produce antibodies, which will help your body fight off the flu if exposed.

33 services33 patients

Influenza vaccine, inactivated 90653

The Influenza vaccine, inactivated, is a shot given to protect against the flu. It contains killed virus particles that help your body build immunity to the flu. It's recommended annually to keep your protection up-to-date. It's safe for ages 6 months and up.

30 services30 patients

Evaluation of single, dual, or multiple lead implantable defibrillator system, remote up to 90 days 93295

This procedure involves remotely monitoring your implantable defibrillator system, which can have single, dual, or multiple leads. Over a period of up to 90 days, the system's performance is evaluated to ensure it's working properly and providing the necessary heart rhythm support.

24 services11 patients

Ultrasound of heart with continuous electrocardiogram (ecg) during rest, exercise and/or drug induced stress with review and report 93351

This procedure involves using ultrasound technology to create images of your heart while you rest, exercise, or undergo drug-induced stress. An ECG continuously monitors your heart's electrical activity. It helps doctors assess heart health and function.

24 services24 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.

20 services18 patients

Programming of dual lead pacemaker system 93280

Programming of a dual lead pacemaker system is a procedure to adjust your heart's pacemaker settings. This process involves a small device, called a programmer, that communicates with your pacemaker to ensure it's working optimally for your heart's needs.

18 services13 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.

13 services13 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.

13 services13 patients

Hospital Affiliations CMS Care Compare

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

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 02093 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.

Other Providers at the Same Location NPPES 3

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

NORFOLK COUNTY MEDICAL ASSOCIATES,INC.

Internal Medicine (Cardiovascular Disease)

844 FRANKLIN ST, SUITE 2
WRENTHAM, MA 02093

Norfolk County (508) 384-5000

MS. MARTINE MINER L.M.T., NCTMB

Mechanotherapist

844 FRANKLIN ST, UNIT 9
WRENTHAM, MA 02093

Norfolk County (508) 384-3436

DR. ALAN CHARLES GOLDBERG ED.D.

Psychologist

844 FRANKLIN ST, # 7
WRENTHAM, MA 02093

Norfolk County (508) 384-0777

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 Dillon's NPI number?

The NPI number for William Dillon is 1689656373. It was assigned to this individual provider in the NPPES registry on November 17, 2005.

Where is William Dillon located?

William Dillon practices at 844 Franklin St 4, Wrentham, MA 02093. The listed phone number is (508) 384-2500.

What is William Dillon's specialty?

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

Is William Dillon enrolled in Medicare?

Yes. William Dillon 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 organization bills Medicare for William Dillon's services?

According to the CMS Revalidation Reassignment List (October 2026 release), William Dillon reassigns Medicare benefits to Norfolk County Medical Associates,inc. (Wrentham, MA). The 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 William Dillon's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does William Dillon accept?

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

According to CMS data, William Dillon is affiliated with Brigham And Women's Hospital.

When was this NPI record last updated?

The NPPES record for William Dillon was last updated on December 27, 2019. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 6 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.