Dr. Eric Bai , MD
Internal Medicine β’ West Warwick, RI
186 Providence St
West Warwick, RI 028932508
This profile restates public CMS/NPPES data; T-MedInfo gives no medical advice — consult a licensed professional, and call 911 for emergencies.
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NPI assigned on March 21, 2022; this date does not establish years in practice.
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Published CMS data list 351 Medicare Part D prescriptions, including refills, in 2024.
Source: CMS, Medicare Part D Prescribers β by Provider and Drug, 2024. Published rows only; this is not a quality measure.
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Published Part D records, 2024:
- Metformin Hcl Er (Metformin Hcl) β 61 prescription fills, including refills.
- Tamsulosin Hcl β 52 prescription fills, including refills.
- Atorvastatin Calcium β 29 prescription fills, including refills.
Source: CMS, Medicare Part D Prescribers β by Provider and Drug, 2024. Drug names come from pharmacy claims. Listing a drug here is not an endorsement or a recommendation.
See all 17 records in the table Β· Guide: How to read Medicare Part D prescriber data
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Close to the middle for Part D prescriptions among clinicians listed under Internal Medicine in Rhode Island (2024, 581 clinicians with data). Median for this group: 749. Middle half: 91 to 5,119.
Source: CMS, Medicare Part D Prescribers β by Provider and Drug, 2024. Billing and prescribing volume is not a quality rating.
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Medicare Part D prescriptions went from 55 in 2023 to 351 in 2024.
Source: CMS, Medicare Part D Prescribers β by Provider and Drug, 2023β2024.
Practice Location & Contact Primary Location
186 Providence St
West Warwick, RI 028932508
Matched by practice address or phone in NPPES. A shared address or phone does not confirm that this clinician works there.
NPPES lists 3 distinct additional practice-address records in Narragansett, RI; Wakefield, RI; Woonsocket, RI. See the list
Source: CMS NPPES NPI Registry, practice location records; release date unavailable.
CMS Doctors and Clinicians lists 1 group name: Thundermist Health Center. See the list
Source: CMS Doctors and Clinicians National Downloadable File, release date unavailable.
Listings do not confirm current availability, employment or a shared ownership network.
Medicare Profile & Education
Source: CMS Doctors and Clinicians National Downloadable File
2022
What Public CMS Data Show
Internal Medicine: NPPES taxonomy is a reported classification, not proof of board certification.
30-day fills
539 standardized 30-day fills in 2024
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
$33,439 in 2024
The total cost of these prescriptions in 2024, paid by Medicare drug plans, patients and other payers together.
It shows the total spending on drugs this clinician prescribed, not what any one patient paid.
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 β by Provider and Drug, 2024.
Industry payments (Open Payments)
No Open Payments records are listed for this clinician for 2019β2025.
Years since graduation
4 years (graduated 2022)
CMS Doctors and Clinicians data list 2022 as the year this clinician finished professional school.
It tells you roughly how long ago the clinician finished school.
What this does not show: Years since graduation
It is not the number of years in practice, and more years does not mean better care.
Source: CMS Doctors and Clinicians National Downloadable File.
NPI first issued
2022
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.
Accepts Medicare assignment
CMS data list this clinician as accepting Medicare assignment. This means agreeing to take the Medicare-approved amount as full payment for covered services.
With Original Medicare, you usually pay only your deductible and coinsurance, and the office sends the claim to Medicare for you.
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, βDoes your provider accept Medicare as full payment?β
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.
Enrolled in Medicare (PECOS)
Dr. Bai has a Medicare enrollment record in PECOS, the CMS system clinicians use to enroll so they can bill Medicare or order services for people with Medicare.
It does not show whether the clinician accepts assignment, is in your plan's network, or is taking new patients.
Source: CMS Medicare Fee-For-Service Public Provider Enrollment (PECOS); CMS Order and Referring file.
Can order Medicare-covered services
CMS lists Dr. Bai as eligible to order or refer Medicare Part B clinical laboratory and imaging services, durable medical equipment (DME) and home health services for people with Medicare.
Medicare pays for these items and services only when they are ordered by an eligible clinician.
What this does not show: Can order Medicare-covered services
It does not mean the clinician offers these services directly.
Source: CMS Medicare Fee-For-Service Public Provider Enrollment (PECOS); CMS Order and Referring file.
Compared with the same specialty in West Warwick and Rhode Island
Billing and prescribing volume is not a quality rating.
Medicare Part D prescriptions
Close to the middle for clinicians listed under Internal Medicine in Rhode Island (2024, 581 clinicians with data). Median for this group: 749. Middle half: 91 to 5,119.
Too few clinicians listed under Internal Medicine in West Warwick have Medicare Part D data for 2024 to compare.
Part D drug cost
Close to the middle for clinicians listed under Internal Medicine in Rhode Island (2024, 581 clinicians with data). Median for this group: $63,829. Middle half: $3,341 to $358,176.
Too few clinicians listed under Internal Medicine in West Warwick have Medicare Part D data for 2024 to compare.
3 active clinicians are listed under Internal Medicine with a practice address in West Warwick, RI (1,034 in Rhode Island).
Addresses are self-reported to NPPES and may be out of date.
CMS data by year
Changes may reflect reporting, coverage or privacy limits, not changes in care quality.
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Medicare Part D prescriptions
Medicare Part D prescriptions increased 538% from 55 in 2023 to 351 in 2024.
- 2023: 55
- 2024: 351
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30-day fills
30-day fills increased 547% from 83 in 2023 to 539 in 2024.
- 2023: 83
- 2024: 539
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Part D drug cost
Part D drug cost increased 258% from $9,335 in 2023 to $33,439 in 2024.
- 2023: $9,335
- 2024: $33,439
Sources: CMS Medicare Part D Prescribers (2024), 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 2024.
| Brand Name | Generic Name | Prescriptions | Day Supply | Total Cost | Patients |
|---|---|---|---|---|---|
| Metformin Hcl Er | Metformin Hcl | 61 | 1,257 | $369.01 | β |
| Tamsulosin Hcl | Tamsulosin Hcl | 52 | 715 | $316.37 | β |
| Atorvastatin Calcium | Atorvastatin Calcium | 29 | 2,310 | $358.58 | 13 |
| Albuterol Sulfate Hfa | Albuterol Sulfate | 25 | 508 | $614.39 | β |
| Valacyclovir | Valacyclovir Hcl | 21 | 147 | $113.61 | β |
| Trulicity | Dulaglutide | 18 | 514 | $18,550.75 | β |
| Gabapentin | Gabapentin | 17 | 1,128 | $353.70 | 11 |
| Trelegy Ellipta | Fluticasone/Umeclidin/Vilanter | 17 | 630 | $11,337.51 | β |
| Spironolactone | Spironolactone | 15 | 720 | $73.00 | β |
| Hydroxyzine Hcl | Hydroxyzine Hcl | 14 | 320 | $87.66 | β |
| Amlodipine Besylate | Amlodipine Besylate | 12 | 915 | $98.72 | β |
| Furosemide | Furosemide | 12 | 590 | $30.80 | β |
| Losartan Potassium | Losartan Potassium | 12 | 1,080 | $209.81 | β |
| Metformin Hcl | Metformin Hcl | 12 | 540 | $25.37 | β |
| Famotidine | Famotidine | 12 | 840 | $104.94 | β |
| Fluticasone Propionate | Fluticasone Propionate | 11 | 660 | $83.28 | β |
| Lidocaine | Lidocaine | 11 | 330 | $711.28 | β |
Source: CMS Part D by Provider and Drug, 2024; rows below 11 claims omitted by CMS; volume isn’t quality. Privacy limits
Specialties & License Numbers Reported to NPPES
Self-certified to NPPES: 2025-12-12NUCC Taxonomy Code: 207R00000X
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.
NUCC Taxonomy Code: 207R00000X
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.
Medicare (PECOS) Enrollment & Ordering Eligibility
Source: CMS PECOSPRACTITIONER - INTERNAL MEDICINE
I20250811002255
RI
8123406600
Sources: CMS Provider Enrollment and Order and Referring. Medicare enrollment is a billing status, not an accreditation or quality rating.
Medicare Group Practice Enrollments
Source: CMS Doctors and Clinicians National Downloadable File
Thundermist Health Center
186 Providence St, West Warwick, RI 028932508
Phone: 4016152800
Secondary Practice Locations
1 River St
Wakefield, RI 028793214
Phone: 4017830523
450 Clinton St
Woonsocket, RI 028953207
Phone: 4017674100
360 Kingstown Rd
Narragansett, RI 028823258
Phone: 4017896492
Clinicians Sharing This Practice Address or Phone
Clinicians sharing this NPPES address, phone or fax; a shared contact does not mean they work together.
Nurse Practitioner
Family Nurse Practitioner (Board Certified)
Nurse Practitioner
Family Nurse Practitioner
Nurse Practitioner - Psychiatric/Mental Health
Family Nurse Practitioner, Psychiatric-Mental Health Nurse Practitioner
Nurse Practitioner - Psychiatric/Mental Health
Psychiatric-Mental Health Nurse Practitioner
Nurse Practitioner - Family
Registered Nurse, Nurse Practitioner
Family Medicine
Doctor of Medicine (M.D.)
Career & Practice History Timeline
Changes recorded in monthly NPPES data files: addresses, names, credentials, specialties and NPI status
Recorded as ERIC BAI, MD
Internal Medicine (license number reported to NPPES: RI MD20840)
Registered at 186 PROVIDENCE ST, WEST WARWICK, RI 028932508 (Tel: 4016152800)
Registered at 186 PROVIDENCE ST, WEST WARWICK, RI 028932508 (Tel: 4016152800)
Internal Medicine (license number reported to NPPES: CA A202393)
NPI status registered as active in NPPES database
Registered at 1800 ORLEANS ST, BALTIMORE, MD 212870010 (Tel: 4109555000)
Registered at 1800 ORLEANS ST, BALTIMORE, MD 212870010
Recorded as ERIC BAI
Student in an Organized Health Care Education/Training Program
First registered as active Individual Practitioner in NPPES Database.
NPI Administrative Meta
Mailing Address
186 Providence St
West Warwick, RI 028932508
Phone: 4016152800