DR. JOHN JOSEPH HENNESSEY M.D.
NPI 1215916564
Internal Medicine in Gales Ferry, CT

Q: What is John Hennessey's NPI number?

The NPI number for John Hennessey is 1215916564. It was assigned to this individual provider in the NPPES registry on January 14, 2006.

Q: What is John Hennessey's specialty?

The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.

Q: When was this NPI record last updated?

The NPPES record for John Hennessey was last updated on November 30, 2012. NPI Profile syncs with the weekly NPPES data releases published by CMS.

Active since January 14, 2006PECOS EnrolledAccepts Medicare Assignment

1527 ROUTE 12, SUITE 1, GALES FERRY, CT 06335(860) 464-7253(860) 464-7404 Get Directions Write a Review

NPPES record last updated: November 30, 2012. Verified against the NPPES registry weekly; last sync: July 26, 2026.

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About Dr. John Joseph Hennessey M.d. NPPES

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

DR. JOHN JOSEPH HENNESSEY M.D. (NPI 1215916564) is an individual internal medicine provider in Gales Ferry, Connecticut, licensed in Connecticut (037592) and active in the NPI registry since January 2006. He is enrolled in Medicare PECOS, is affiliated with Westerly Hospital, and is a graduate of Tufts University School Of Medicine (1996).

NPPES Registry Identity

NPI1215916564

Entity TypeIndividualMale

Primary Taxonomy207R00000X

Provider Legal NameDR. JOHN JOSEPH HENNESSEYCredential: M.D.

Location Address1527 ROUTE 12, SUITE 1Gales Ferry, CT 06335-1800

Mailing AddressPo Box 355Gales Ferry, CT 06335-0355 · (860) 464-7253 · Fax (860) 464-7404

Phone(860) 464-7253

Fax(860) 464-7404

Sole ProprietorNo

Medical School CMSTufts University School Of MedicineGraduated 1996

Enumeration DateJanuary 14, 2006

Last NPPES UpdateNovember 30, 2012

✔ NPI 1215916564 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians

Taxonomy Code207R00000X

License✔ Licensed in CT · 037592

Definition

A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.

1527 ROUTE 12, Gales Ferry, CT 06335

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Other Identifiers 3

Medicare UPING94116

Medicare ID-Type Unspecified110007608CT

Medicaid001375923CT

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. John Joseph Hennessey 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 ID143362525

PECOS Enrollment IDI20100902000771

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 26

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.

Injection, denosumab, 1 mg J0897

Denosumab is a medication given via injection to strengthen your bones. It works by slowing down the cells that break down bone, improving bone density and reducing the risk of fractures. It's often used for osteoporosis treatment.

3,661 services35 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.

1,485 services590 patients

Urinalysis, manual test 81002

A urinalysis is a simple, non-invasive test that checks the urine for various elements such as sugar, protein, and signs of infection. It can help detect many common conditions, including kidney disease and diabetes. The manual test involves a lab technician examining a urine sample.

451 services397 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.

443 services416 patients

Subsequent nursing facility care with moderate level of medical decision making, per day, if using time, at least 30 minutes 99309

A follow-up nursing facility visit per day is a daily check-in by a healthcare professional. This 25-minute visit typically involves monitoring your health progress, addressing any concerns, and adjusting treatment plans as necessary. It's a vital part of ensuring your ongoing wellbeing.

442 services77 patients

Blood glucose (sugar) test performed by hand-held instrument 82962

A blood glucose test uses a handheld device to measure the amount of sugar in your blood. A small prick on your finger allows a drop of blood to be placed on a test strip, which is then read by the device. This helps monitor and manage diabetes effectively.

437 services187 patients

Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit G0439

An annual wellness visit is a yearly appointment with your primary care provider to create or update a personalized prevention plan. This plan helps prevent illness based on your current health and risk factors. It's a subsequent visit, meaning it follows an initial assessment.

424 services424 patients

Chronic care management services, first 20 minutes of clinical staff time directed by health care professional, per calendar month 99490

Chronic care management services involve a healthcare professional directing clinical staff in managing your chronic conditions. This includes the first 20 minutes per month of services like medication management, care coordination, and health monitoring to help improve your health and quality of life.

328 services185 patients

Hemoglobin a1c level 83036

Hemoglobin A1c (HbA1c) is a test that measures your average blood sugar level over the past 2-3 months. It's used to monitor how well diabetes is being controlled. High levels may indicate that your diabetes treatment plan needs adjustment.

299 services165 patients

Injection of drug or substance under skin or into muscle 96372

This procedure involves administering medication directly under the skin or into a muscle. A small needle is used to inject the drug, allowing it to be absorbed quickly into the bloodstream. It's a common method for delivering a variety of medications.

124 services49 patients

Initial nursing facility care with high level of medical decision making, per day, if using time, 50 minutes or more 99306

An initial nursing facility visit is your first meeting with your healthcare team at a nursing facility. Lasting typically 45 minutes, this appointment involves a comprehensive health assessment and the creation of your personalized care plan. It's a crucial step to ensure your health and well-being.

94 services74 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.

65 services57 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.

61 services51 patients

Injection, vitamin b-12 cyanocobalamin, up to 1000 mcg J3420

This is a procedure where a small dose of Vitamin B-12, also known as Cyanocobalamin, is injected into your body. This vitamin is essential for nerve function and the production of red blood cells. It's often used to treat vitamin B-12 deficiency.

61 services13 patients

Transitional care management services for problem of high complexity 99496

Transitional care management services are designed to ensure a smooth transition from a hospital to home or another care setting for patients with complex health issues. These services include medication management, patient education, and coordination with healthcare providers.

56 services49 patients

Physician or allowed practitioner certification for medicare-covered home health services under a home health plan of care (patient not present), including contacts with home health agency and review of reports of patient status required by physicians and G0180

This is a service where a doctor or authorized practitioner certifies that you require Medicare-covered home health services. They will communicate with the home health agency and review reports on your health status to ensure you receive appropriate care. This does not involve an in-person visit.

48 services40 patients

Chronic care management services for two or more chronic conditions, additional 20 minutes of clinical staff time directed by health care professional, per calendar month 99439

Chronic Care Management services involve regular check-ins with healthcare professionals to manage two or more chronic conditions. It includes an additional 20 minutes of clinical staff time per month, directed by a healthcare professional, to ensure optimal health management.

36 services28 patients

Removal of impacted ear wax 69210

Impacted ear wax removal is a safe procedure to clear blockages in the ear canal caused by hardened ear wax. A healthcare professional uses specialized tools or a gentle irrigation method to loosen and remove the wax, improving hearing and alleviating discomfort.

27 services26 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.

27 services27 patients

Detection test by immunoassay with direct visual observation for severe acute respiratory syndrome coronavirus 2 (covid-19) 87811

This is a test to detect COVID-19, the virus causing severe respiratory illness. It uses a method called immunoassay, which identifies the virus by its unique proteins. The test is directly observed for accuracy. It helps determine if you're currently infected.

25 services25 patients

Colorectal cancer screening; fecal occult blood test, immunoassay, 1-3 simultaneous G0328

A fecal occult blood test is a screening tool for colorectal cancer. It checks for tiny amounts of blood in your stool that can't be seen with the naked eye. The immunoassay method can test 1-3 samples at once. This helps detect cancer early, when treatment is most effective.

19 services19 patients

Physician or allowed practitioner re-certification for medicare-covered home health services under a home health plan of care (patient not present), including contacts with home health agency and review of reports of patient status required by physicians a G0179

This procedure involves a doctor or approved practitioner reviewing your health status and re-certifying your need for Medicare-covered home health services. It includes communication with the home health agency and assessment of your health reports, even when you're not physically present.

18 services15 patients

Manual urinalysis test with examination using microscope, non-automated 81000

A manual urinalysis test involves studying a urine sample under a microscope. This non-automated method helps identify any abnormal substances present. It's a useful tool for detecting potential health concerns early. The process is simple and non-invasive.

16 services11 patients

Detection test by immunoassay with direct visual observation for influenza virus 87804

This is a test that identifies the influenza virus in your body. It works by using an immunoassay, a method that detects the presence of the virus through an immune response. The results are directly observable, making it a quick and efficient way to diagnose flu.

14 services14 patients

Advance care planning, first 30 minutes 99497

Advance care planning is a process where you discuss your healthcare preferences with your doctor. This conversation, lasting up to 30 minutes, helps ensure your wishes are respected if you're unable to communicate them in the future. It's about your care, your way.

14 services13 patients

Test to measure expiratory airflow and volume 94010

This test, known as spirometry, assesses how well your lungs work. It measures how much air you can inhale, how much you can exhale and how quickly you can exhale. It's non-invasive and helps diagnose conditions like asthma or COPD.

11 services11 patients

Hospital Affiliations CMS Care Compare

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

Westerly Hospital

Acute Care Hospitals · Westerly, RI

5/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number410013

Location25 Wells StreetWesterly, RI 02891 · Washington County

Emergency services

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 06335 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

$138.84 typical visit price

range $60.82 – $183.10

Typical copayment $34.71 (range $15.20 – $45.77)

Most-billed visit code 99204

Established Patient

$106.68 typical visit price

range $19.76 – $149.26

Typical copayment $26.67 (range $4.94 – $37.31)

Most-billed visit code 99214

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.

Reported Quality Measures

Preventive Care and Screening: Body Mass Index (BMI) Screening and Follow-Up Plan

Percentage of patients aged 18 years and older with a BMI documented during the current encounter or during the previous twelve months AND with a BMI outside of normal parameters, a follow-up plan is documented during the encounter or during the previous…

100%437 patients5/55-star benchmark: 100%

Providers report different measures because they deliver different services; reporting more or less information is not a reflection of quality. Star ratings appear only where CMS assigned them.

Referred Medical Equipment & Supplies CMS DME claims 11

Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.

Blood glucose test or reagent strips for home blood glucose monitor, per 50 strips A4253

DME-Other DME · category DE017N

8 suppliers24 claims58 services$6.15 avg. paid by Medicare

Lancets, per box of 100 A4259

DME-Medical/Surgical Supplies · category DA000N

7 suppliers15 claims20 services$1.13 avg. paid by Medicare

Urinary catheter anchoring device, adhesive skin attachment, each A4333

DME-Orthotic Devices · category DF000N

1 supplier11 claims132 services$2.13 avg. paid by Medicare

Bedside drainage bag, day or night, with or without anti-reflux device, with or without tube, each A4357

DME-Orthotic Devices · category DF000N

3 suppliers13 claims16 services$8.97 avg. paid by Medicare

Nasal interface (mask or cannula type) used with positive airway pressure device, with or without head strap A7034

DME-Other DME · category DE001N

3 suppliers15 claims17 services$56.12 avg. paid by Medicare

Headgear used with positive airway pressure device A7035

DME-Other DME · category DE001N

4 suppliers13 claims13 services$18.03 avg. paid by Medicare

Dollar amounts are the average Medicare paid the supplier per service. They are not the cost to the patient.

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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.

DR. STEVEN JOSEPH DIAS DDS

Dentist (Pediatric Dentistry)

1527 ROUTE 12
GALES FERRY, CT 06335

Southeastern Connecticut Planning Region (860) 464-7204

RANDALL D. HARRIS D.D.S.

Dentist (General Practice)

1527 ROUTE 12
GALES FERRY, CT 06335

Southeastern Connecticut Planning Region (860) 464-7204

MARK A. ROSENTHAL M.D.

Pediatrics

1527 ROUTE 12, BOX 608
GALES FERRY, CT 06335

Southeastern Connecticut Planning Region (860) 464-7248

SARAH HAFEEZ ILAHI D.O.

Pediatrics

1527 ROUTE 12
GALES FERRY, CT 06335

Southeastern Connecticut Planning Region (860) 464-7724

GALES FERRY MEDICAL GROUP LLC

Internal Medicine

1527 ROUTE 12
GALES FERRY, CT 06335

Southeastern Connecticut Planning Region (860) 464-7274

DAVID M. RINZLER M.D.

Pediatrics

1527 ROUTE 12
GALES FERRY, CT 06335

Southeastern Connecticut Planning Region (860) 464-7248

GALES FERRY PEDIATRIC GROUP

Clinic/Center (Medical Specialty)

1527 ROUTE 12
GALES FERRY, CT 06335

Southeastern Connecticut Planning Region (860) 464-7248

LORI SORIANO RDH, CLC

Lactation Consultant, Non-RN

1527 ROUTE 12
GALES FERRY, CT 06335

Southeastern Connecticut Planning Region (860) 816-1018

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 Hennessey's NPI number?

The NPI number for John Hennessey is 1215916564. It was assigned to this individual provider in the NPPES registry on January 14, 2006.

Where is John Hennessey located?

John Hennessey practices at 1527 Route 12 Suite 1, Gales Ferry, CT 06335. The listed phone number is (860) 464-7253.

What is John Hennessey's specialty?

The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.

Is John Hennessey enrolled in Medicare?

Yes. John Hennessey 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.

Is John Hennessey affiliated with any hospitals?

According to CMS data, John Hennessey is affiliated with Westerly Hospital.

When was this NPI record last updated?

The NPPES record for John Hennessey was last updated on November 30, 2012. NPI Profile syncs with the weekly NPPES data releases published by CMS.