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Dr. Robert G Ellison , MD

Internal Medicine β€’ Warwick, RI

Active NPI 1083610836 Individual Practitioner Male Practitioner
Practice location in NPPES

400 Bald Hill Rd, Ste 520
Warwick, RI 028861692

Call 4017938520 Location details and other listings
Medical Disclaimer

This profile restates public CMS/NPPES data; T-MedInfo gives no medical advice — consult a licensed professional, and call 911 for emergencies.

Practice Location & Contact Primary Location

Practice Address

400 Bald Hill Rd
Ste 520

Warwick, RI 028861692

Telephone 4017938520
Fax 4017938527
Organization at the Same NPPES Address or Phone
Tollgate Sleep Disorders Center, Inc. Facility NPI 1598762106

Matched by practice address or phone in NPPES. A shared address or phone does not confirm that this clinician works there.

30-day fills

241 standardized 30-day fills in 2014

CMS converts prescriptions to 30-day supplies so they can be compared. A 90-day prescription counts as about three 30-day fills.

What this does not show: 30-day fills

It is not a count of patients and not a measure of quality.

Part D drug cost

$3,337 in 2014

The total cost of these prescriptions in 2014, paid by Medicare drug plans, patients and other payers together.

What this does not show: Part D drug cost

A higher cost often reflects the type of medicines a specialty uses. It is not your out-of-pocket cost and not a measure of quality.

Source: CMS, Medicare Part D Prescribers – by Provider and Drug, 2014.

Industry payments (Open Payments)

No Open Payments records are listed for this clinician for 2019–2025.

Guide: How to read an Open Payments record

NPI first issued

2005

The year this clinician's National Provider Identifier (NPI) was issued. An NPI is a unique 10-digit ID that US health care providers use for billing.

What this does not show: NPI first issued

NPIs have been issued only since 2005, so this year is not necessarily when the clinician started practicing.

Source: CMS NPPES NPI Registry.

Medicare assignment not listed

CMS data do not show whether this clinician accepts Medicare assignment. This does not mean they do not accept Medicare. Ask the office.

Medicare assignment applies to Original Medicare. It does not tell you whether the clinician is in a Medicare Advantage plan's network, accepts other insurance, or is taking new patients.

Source: CMS Doctors and Clinicians; Medicare.gov, β€œDoes your provider accept Medicare as full payment?”

Guide: What Medicare assignment means

No telehealth indicator

CMS shows this indicator only when recent Medicare claims include telehealth services. The clinician may still offer telehealth; ask the office.

Source: CMS, Telehealth Indicator on Medicare Care Compare (fact sheet, January 2023); CMS Doctors and Clinicians.

Guide: How Medicare covers telehealth

Compared with the same specialty in Warwick and Rhode Island

Billing and prescribing volume is not a quality rating.

Medicare Part D

Comparisons use 2024 data. The latest CMS data for Dr. Ellison are from 2014.

120 active clinicians are listed under Internal Medicine with a practice address in Warwick, RI (1,034 in Rhode Island).

Addresses are self-reported to NPPES and may be out of date.

Telehealth indicator in Warwick

10.8% of these 120 clinicians have the CMS telehealth indicator.

45% of these 120 clinicians are listed by CMS as accepting Medicare assignment.

Sources: CMS Medicare Part D Prescribers (2014), CMS Doctors and Clinicians, CMS NPPES NPI Registry. Specialty names follow the NUCC Health Care Provider Taxonomy.

Text: T-MedInfo Β· Report an error.

Medicare Part D Prescribing Profile & Medications

Medicare Part D prescriptions filled, including refills, in 2014.

CMS Part D Β· Data Year 2014
Prescription Year:
Brand Name Generic Name Prescriptions Day Supply Total Cost Patients
Atorvastatin Calcium Atorvastatin Calcium 36 1,410 $758.84 β€”
Levothyroxine Sodium Levothyroxine Sodium 24 720 $211.91 β€”
Lisinopril Lisinopril 23 1,230 $143.31 β€”
Atenolol Atenolol 21 750 $228.99 β€”
Montelukast Sodium Montelukast Sodium 20 600 $651.05 β€”
Simvastatin Simvastatin 18 1,080 $129.89 β€”
Digox Digoxin 13 390 $704.73 β€”
Furosemide Furosemide 12 360 $106.42 β€”
Amitriptyline Hcl Amitriptyline Hcl 12 360 $155.76 β€”
Gemfibrozil Gemfibrozil 11 330 $245.63 β€”

Source: CMS Part D by Provider and Drug, 2014; rows below 11 claims omitted by CMS; volume isn’t quality. Privacy limits

Specialties & License Numbers Reported to NPPES

Internal Medicine Primary Specialty

NUCC Taxonomy Code: 207R00000X

License # reported to NPPES RI MD04969

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.

Check License Status with the State Board License numbers are self-reported to NPPES; T-MedInfo does not confirm them against state records. Current status: Rhode Island State Medical Licensing Board.
Look Up on State Board Site

Additional State Medicaid & Healthcare Payer Identifiers

Medicaid ID
RE04322 (RI)
Medicaid ID
2071151 (MA)

Clinicians Sharing This Practice Address or Phone

Clinicians sharing this NPPES address, phone or fax; a shared contact does not mean they work together.

6 listed
Dr. Irene Chliwner , MD

Internal Medicine

NPI 1588745491

Doctor of Medicine (M.D.)

Shannon Doran , PA

Physician Assistant - Medical

NPI 1598157422

Physician Assistant

NPI 1871530592

Doctor of Osteopathic Medicine (D.O.)

Heather Glenn , NP

Nurse Practitioner

NPI 1952460636

Nurse Practitioner

NPI 1932105780

Doctor of Medicine (M.D.)

Patricia Martino , NP

Nurse Practitioner - Adult Health

NPI 1689699175

Nurse Practitioner

Career & Practice History

NPI enumerated June 27, 2005.

No changes to the name, practice address, taxonomy or NPI status in this record have been observed in the monthly NPPES data files from January 2017 to August 2026.

No reviews have been published yet. Leave a review.

NPI Administrative Meta

NPI Number: 1083610836
Entity Type:
Individual Provider Physician, Nurse Practitioner, or Solo Healthcare Professional (Type 1 NPI)
Enumeration Date: June 27, 2005
Last Update: September 07, 2007
Sole Proprietor: No

Other Internal Medicine Providers in Warwick

All Internal Medicine Providers in Warwick

Mailing Address

400 Bald Hill Rd, Ste 520

Warwick, RI 028861692

Phone: 4017938520

About This Data NPPES fields (address, phone, specialty, license) are self-reported and may be outdated; Medicare fields follow the CMS dataset named in each section. Correct directly at NPPES.