Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

DR. ERIC MICHAEL ISSELBACHER MD
NPI 1225003940
Internal Medicine - Cardiovascular Disease in Boston, MA

Q: What is Eric Isselbacher's NPI number?

The NPI number for Eric Isselbacher is 1225003940. It was assigned to this individual provider in the NPPES registry on February 17, 2006.

Q: What is Eric Isselbacher'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 Eric Isselbacher was last updated on July 13, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 45 days 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 February 17, 2006PECOS EnrolledAccepts Medicare Assignment

55 FRUIT ST, YAW 5 CARDIAC UNIT ASSOCIATES, BOSTON, MA 02114(617) 724-1994(617) 724-0289 Get Directions Write a Review

NPPES record last updated: July 13, 2026. Verified against the NPPES registry weekly; last sync: August 23, 2026.

On this page

About Dr. Eric Michael Isselbacher Md NPPES

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

DR. ERIC MICHAEL ISSELBACHER MD (NPI 1225003940) is an individual cardiovascular disease provider in Boston, Massachusetts, licensed in Massachusetts (75008) and active in the NPI registry since February 2006. He is enrolled in Medicare PECOS, is affiliated with North Shore Medical Center -, and is a graduate of Harvard Medical School (1989).

NPPES Registry Identity

NPI1225003940

Entity TypeIndividualMale

Primary Taxonomy207RC0000X

Provider Legal NameDR. ERIC MICHAEL ISSELBACHERCredential: MD

Location Address55 FRUIT ST, YAW 5 CARDIAC UNIT ASSOCIATESBoston, MA 02114-2696

Mailing AddressPo Box 9142, Mass General Physician OrganizationCharlestown, MA 02129-9142 · (617) 724-0287 · Fax (617) 726-2894

Phone(617) 724-1994

Fax(617) 724-0289

Sole ProprietorNo

Medical School CMSHarvard Medical SchoolGraduated 1989

Enumeration DateFebruary 17, 2006

Last NPPES UpdateJuly 13, 2026

✔ NPI 1225003940 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 · 75008

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.

55 FRUIT ST, Boston, MA 02114

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Other Identifiers 3

Medicaid3139476MA

Other738161MA · Tufts Health Plan

OtherJ31239MA · Bcbs Ma

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

Dr. Eric Michael Isselbacher 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 ID8022096718

PECOS Enrollment IDI20040709000545

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 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.

923 services823 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.

502 services439 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.

307 services302 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.

294 services294 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.

211 services85 patients

Prolonged office or other outpatient evaluation and management service(s) beyond the maximum required time of the primary procedure which has been selected using total time on the date of the primary service; each additional 15 minutes by the physician or G2212

This service refers to extended doctor visits where your healthcare provider spends additional time evaluating and managing your health beyond the primary procedure's required time. This includes each extra 15 minutes spent by the physician on the same day as the primary service.

159 services77 patients

New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more 99205

This is a first-time patient visit where a healthcare professional spends 60-74 minutes with you. It involves a comprehensive evaluation, including your medical history and current health condition. They'll also advise on preventive health measures and formulate a treatment plan if needed.

107 services107 patients

Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes 99233

Follow-up hospital inpatient care per day typically involves a 35-minute check-up by your healthcare provider. This service includes monitoring your health progress, adjusting your treatment plan if needed, and answering any questions you may have about your condition or care.

59 services32 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.

53 services53 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.

47 services47 patients

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

38 services38 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.

37 services36 patients

Hospital discharge day management, more than 30 minutes 99239

Hospital discharge day management over 30 minutes involves a detailed process to ensure a smooth transition from hospital to home. It includes final examinations, discussion of your hospital stay, post-discharge instructions, and coordinating follow-up care.

27 services27 patients

Interpretation and report of ultrasound of heart 93314

This procedure involves using ultrasound technology to create images of your heart. These images help identify heart conditions by showing the size, structure, and motion of your heart. A report is then prepared detailing the findings.

26 services26 patients

Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes 99223

Initial hospital inpatient care per day, typically 70 minutes, refers to the daily medical service provided to patients admitted to the hospital. This includes a comprehensive evaluation, diagnosis, treatment plan, and monitoring of your health condition. It ensures your well-being during your hospital stay.

22 services22 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.

21 services21 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.

19 services19 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.

17 services17 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.

17 services17 patients

Hospital discharge day management, 30 minutes or less 99238

Hospital discharge day management of 30 minutes or less includes finalizing your treatment, discussing your progress, and planning after-care at home. It ensures you're ready to leave the hospital and continue recovery safely.

16 services16 patients

Hospital Affiliations CMS Care Compare 4

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

North Shore Medical Center -

Acute Care Hospitals · Salem, MA

5/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number220035

Location81 Highland AvenueSalem, MA 01970 · Essex County

Emergency services Birthing friendly

Massachusetts General Hospital

Acute Care Hospitals · Boston, MA

5/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number220071

Location55 Fruit StreetBoston, MA 02114 · Suffolk County

Emergency services Birthing friendly

Newton-Wellesley Hospital

Acute Care Hospitals · Newton, MA

5/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number220101

Location2014 Washington StreetNewton, MA 02462 · Middlesex 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 02114 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 20

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

STUTI GIRISH SHROFF MD, MBBS

Pathology (Anatomic Pathology)

55 FRUIT ST
BOSTON, MA 02114

Suffolk County (617) 726-2971

NANCY WANG M.D.

Internal Medicine (Hematology & Oncology)

55 FRUIT ST
BOSTON, MA 02114

Suffolk County (017) 724-4000

DR. DUSAN HANIDZIAR M.D., PH.D.

Anesthesiology

55 FRUIT ST, GRAY-BIGELOW 444
BOSTON, MA 02114

Suffolk County (617) 726-3030

JOHN JOSEPH DANKO DO

Physical Medicine & Rehabilitation

55 FRUIT ST
BOSTON, MA 02114

Suffolk County (617) 726-2000

DR. MICHAEL ANDREW LOBRITZ M.D, PH.D.

Internal Medicine (Infectious Disease)

55 FRUIT ST, DIVISION OF INFECTIOUS DISEASE, GRJ-504
BOSTON, MA 02114

Suffolk County (617) 724-9248

MS. KELLY ELISHA TRECARTIN NP

Nurse Practitioner (Acute Care)

55 FRUIT ST, BIGALOW 852 F
BOSTON, MA 02114

Suffolk County (617) 726-7400

JAMIE MARIE ALLEN NP

Nurse Practitioner

55 FRUIT ST
BOSTON, MA 02114

Suffolk County (617) 724-4410

DR. DHAVAL SANJEEV KOLTE M.B.B.S., PH.D.

Internal Medicine (Cardiovascular Disease)

55 FRUIT ST
BOSTON, MA 02114

Suffolk County (617) 643-3238

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 Eric Isselbacher's NPI number?

The NPI number for Eric Isselbacher is 1225003940. It was assigned to this individual provider in the NPPES registry on February 17, 2006.

Where is Eric Isselbacher located?

Eric Isselbacher practices at 55 Fruit St Yaw 5 Cardiac Unit Associates, Boston, MA 02114. The listed phone number is (617) 724-1994.

What is Eric Isselbacher's specialty?

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

Is Eric Isselbacher enrolled in Medicare?

Yes. Eric Isselbacher 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 Eric Isselbacher accept?

Health plans from Anthem Blue Cross and Blue Shield list Eric Isselbacher 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 Eric Isselbacher affiliated with any hospitals?

According to CMS data, Eric Isselbacher is affiliated with North Shore Medical Center -, Massachusetts General Hospital, Newton-Wellesley Hospital and Brigham And Women's Hospital.

When was this NPI record last updated?

The NPPES record for Eric Isselbacher was last updated on July 13, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 45 days 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.