Olivia A Casimir , PA-C
Physician Assistant β’ Bristol, CT
25 Newell Rd Ste E36
Bristol, CT 060105132
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
25 Newell Rd Ste E36
Bristol, CT 060105132
Matched by practice address or phone in NPPES. A shared address or phone does not confirm that this clinician works there.
CMS Doctors and Clinicians lists 1 group name: Connecticut Gi Pllc. 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
2024
What Public CMS Data Show
Physician Assistant: NPPES taxonomy is a reported classification, not proof of board certification.
Open Payments general payments, program year 2025
All general payments: $2,047.24 across 53 records.
By nature of payment
- Food and Beverage: $2,047.24 across 53 records.
Reporting-company totals (3 largest of 16)
- Madrigal Pharmaceuticals: $461.57 across 5 records.
- Phathom Pharmaceuticals, Inc.: $277.72 across 11 records.
- Janssen Pharmaceuticals, Inc: $271.17 across 2 records.
A reported payment does not necessarily mean the financial relationship is improper and is not a measure of care quality. Clinicians can review and dispute these records.
Source: Calculated by T-MedInfo from CMS Open Payments general-payment records for program year 2025 (published June 30, 2026).
Years since graduation
2 years (graduated 2024)
CMS Doctors and Clinicians data list 2024 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
2024
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
Telehealth (some services)
Recent Medicare claims show this clinician provided some services by telehealth, such as a video or phone visit.
You may be able to have some visits without going to the office. Ask which visits can be done by telehealth.
What this does not show: Telehealth (some services)
It does not mean all services are offered by telehealth, or that telehealth is covered by your plan.
Source: CMS, Telehealth Indicator on Medicare Care Compare (fact sheet, January 2023); CMS Doctors and Clinicians.
Enrolled in Medicare (PECOS)
Olivia Casimir 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 Olivia Casimir 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 Bristol and Connecticut
23 active clinicians are listed under Physician Assistant with a practice address in Bristol, CT (2,047 in Connecticut).
Addresses are self-reported to NPPES and may be out of date.
Telehealth indicator in Bristol
21.7% of these 23 clinicians have the CMS telehealth indicator.
60.9% of these 23 clinicians are listed by CMS as accepting Medicare assignment.
CMS data by year
Changes may reflect reporting, coverage or privacy limits, not changes in care quality.
-
Industry payments (Open Payments)
Industry payments (Open Payments) went from $462.70 in 2024 to $2,047.24 in 2025.
- 2024: $462.70
- 2025: $2,047.24
Sources: CMS Open Payments (2025), CMS Doctors and Clinicians, CMS NPPES NPI Registry. Specialty names follow the NUCC Health Care Provider Taxonomy.
Text: T-MedInfo Β· Report an error.
Pharma & Medical Device Financial Disclosures
Payments and other transfers of value that drug and medical device companies reported to CMS Open Payments
Program year 2025 (payments made January 1 β December 31, 2025): 53 records totaling $2,047.24.
| Manufacturer | Payment Nature | Product | Type | Amount ($) |
|---|---|---|---|---|
| Janssen Pharmaceuticals, Inc |
Food and Beverage
In-kind items and services
|
TREMFYA | General | $146.20 |
| Madrigal Pharmaceuticals |
Food and Beverage
In-kind items and services
|
REZDIFFRA | General | $143.88 |
| Madrigal Pharmaceuticals |
Food and Beverage
In-kind items and services
|
REZDIFFRA | General | $138.37 |
| Madrigal Pharmaceuticals |
Food and Beverage
In-kind items and services
|
REZDIFFRA | General | $137.10 |
| Phathom Pharmaceuticals, Inc. |
Food and Beverage
Cash or cash equivalent
|
VOQUEZNA | General | $124.97 |
| Janssen Pharmaceuticals, Inc |
Food and Beverage
In-kind items and services
|
TREMFYA | General | $124.97 |
| Novo Nordisk Inc |
Food and Beverage
In-kind items and services
|
Wegovy | General | $123.92 |
| Eli Lilly and Company |
Food and Beverage
Cash or cash equivalent
|
OMVOH | General | $120.84 |
| Phathom Pharmaceuticals, Inc. |
Food and Beverage
Cash or cash equivalent
|
VOQUEZNA | General | $42.54 |
| QOL Medical, LLC |
Food and Beverage
In-kind items and services
|
Sucraid | General | $37.42 |
| Aimmune Therapeutics, Inc. |
Food and Beverage
In-kind items and services
|
ZENPEP | General | $33.99 |
| Takeda Pharmaceuticals U.S.A., Inc. |
Food and Beverage
In-kind items and services
|
ENTYVIO | General | $33.05 |
| Aimmune Therapeutics, Inc. |
Food and Beverage
In-kind items and services
|
ZENPEP | General | $32.44 |
| GlaxoSmithKline, LLC. |
Food and Beverage
In-kind items and services
|
NUCALA | General | $30.72 |
| QOL Medical, LLC |
Food and Beverage
In-kind items and services
|
Sucraid | General | $30.63 |
| Ardelyx, Inc. |
Food and Beverage
In-kind items and services
|
IBSRELA | General | $29.58 |
| Aimmune Therapeutics, Inc. |
Food and Beverage
In-kind items and services
|
ZENPEP | General | $26.72 |
| Takeda Pharmaceuticals U.S.A., Inc. |
Food and Beverage
In-kind items and services
|
ENTYVIO | General | $25.65 |
| Salix Pharmaceuticals, a division of Bausch Health US, LLC |
Food and Beverage
In-kind items and services
|
XIFAXAN | General | $24.63 |
| Salix Pharmaceuticals, a division of Bausch Health US, LLC |
Food and Beverage
In-kind items and services
|
XIFAXAN | General | $24.62 |
| Salix Pharmaceuticals, a division of Bausch Health US, LLC |
Food and Beverage
In-kind items and services
|
XIFAXAN | General | $24.46 |
| Salix Pharmaceuticals, a division of Bausch Health US, LLC |
Food and Beverage
In-kind items and services
|
XIFAXAN | General | $24.45 |
| Salix Pharmaceuticals, a division of Bausch Health US, LLC |
Food and Beverage
In-kind items and services
|
XIFAXAN | General | $24.06 |
| Salix Pharmaceuticals, a division of Bausch Health US, LLC |
Food and Beverage
In-kind items and services
|
XIFAXAN | General | $23.76 |
| Salix Pharmaceuticals, a division of Bausch Health US, LLC |
Food and Beverage
In-kind items and services
|
XIFAXAN | General | $23.76 |
(top 25 shown)
Source: CMS Open Payments, program year 2025, released June 30, 2026.
Specialties & License Numbers Reported to NPPES
Self-certified to NPPES: 2024-09-27NUCC Taxonomy Code: 363A00000X
A physician assistant is a person who has successfully completed an accredited education program for physician assistant, is licensed by the state and is practicing within the scope of that license. Physician assistants are formally trained to perform many of the routine, time-consuming tasks a physician can do. In some states, they may prescribe medications. They take medical histories, perform physical exams, order lab tests and x-rays, and give inoculations. Most states require that they work under the supervision of a physician.
Medicare (PECOS) Enrollment & Ordering Eligibility
Source: CMS PECOSPRACTITIONER - PHYSICIAN ASSISTANT
I20241004000949
CT
3072044718
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
Connecticut Gi Pllc
85 Seymour St, Hartford, CT 061065529
Phone: 8602462571
Clinicians Sharing This Practice Address or Phone
Clinicians sharing this NPPES address, phone or fax; a shared contact does not mean they work together.
Internal Medicine - Gastroenterology
Doctor of Medicine (M.D.)
Nurse Practitioner
Advanced Practice Registered Nurse
Nurse Practitioner
Advanced Practice Registered Nurse
Physician Assistant - Medical
Physician Assistant (Certified)
Nurse Practitioner - Adult Health
Advanced Practice Registered Nurse
Internal Medicine - Gastroenterology
Doctor of Medicine (M.D.)
Career & Practice History Timeline
Changes recorded in monthly NPPES data files: addresses, names, credentials, specialties and NPI status
Registered at 25 NEWELL RD STE E36, BRISTOL, CT 060105132 (Tel: 8605839252)
Registered at 78 ROBERTA DR, MIDDLETOWN, CT 064575510 (Tel: 4047189514)
Recorded as OLIVIA CASIMIR, PA-C
Physician Assistant (license number reported to NPPES: CT 6773)
NPI status registered as active in NPPES database
Registered at 2611 FALL CREEK LDG, LOGANVILLE, GA 300525878 (Tel: 4047189514)
Registered at 2611 FALL CREEK LDG, LOGANVILLE, GA 300525878 (Tel: 4047189514)
Recorded as OLIVIA CASIMIR
Student in an Organized Health Care Education/Training Program
First registered as active Individual Practitioner in NPPES Database.
NPI Administrative Meta
Other Physician Assistants in Bristol
- Thomas Balga, PA-C
- Laqueena Williams, PA-C
- Matthew Champeau, PA
- Brian Volonte, PA-C
- Leah Trickett
- Evan Perez, PA-C
Mailing Address
78 Roberta Dr
Middletown, CT 064575510
Phone: 4047189514