Casey M O'brien , PA-C
Physician Assistant • Williston, VT
Professional Overview & Biography Verified Profile Summary
Casey O'Brien, PA-C is a registered healthcare professional specializing in Physician Assistant in Williston, VT. Practice services are available at 426 INDUSTRIAL AVE STE 130 under active NPI credentials.
Frequently performed procedures and clinical services include injection, methylprednisolone acetate, 1 mg, established patient outpatient office visit, injection, triamcinolone acetonide, not otherwise specified, 10 mg. Full Medicare procedure pricing transparency rates and service volume details are listed on this profile.
Practice Location & Contact Primary Location
426 Industrial Ave Ste 130
Williston, VT 054954449
Specialty Benchmarks & Practice Insights
Comparative analytics for Physician Assistant in Williston, VT
Practicing in Williston, VT (325 Statewide)
In-Person Office Visits Only
Under CMS Medicare Fee Schedule vs Standard Submitted Charges
Performed Procedures & Service Volume
Top Medicare Part B procedures performed by this practitioner
| HCPCS Code & Description | Services | Patients | Submitted Charge | Medicare Allowed |
|---|---|---|---|---|
|
J1010
Injection, methylprednisolone acetate, 1 mg
|
2,280 | 43 | $1.00 | $0.13 |
|
99214
Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more
|
143 | 90 | $181.00 | $104.99 |
|
J3301
Injection, triamcinolone acetonide, not otherwise specified, 10 mg
|
98 | 21 | $3.00 | $0.94 |
|
20610
Aspiration and/or injection of fluid from large joint
|
85 | 56 | $131.53 | $49.83 |
|
99203
New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more
|
48 | 48 | $158.31 | $90.81 |
|
99213
Established patient office or other outpatient visit, typically 15 minutes
|
33 | 30 | $98.00 | $52.57 |
|
73564
X-ray of knee, 4 or more views
|
22 | 22 | $165.00 | $39.06 |
|
20610
Aspiration and/or injection of fluid from large joint
|
19 | 16 | $112.42 | $40.57 |
|
99213
Established patient office or other outpatient visit, typically 15 minutes
|
19 | 15 | $127.00 | $74.41 |
|
73030
X-ray of shoulder, minimum of 2 views
|
14 | 13 | $122.00 | $28.80 |
|
72110
X-ray of lower and sacral spine, minimum of 4 views
|
11 | 11 | $182.00 | $42.91 |
Medical Specialties & State Licenses
CMS Verified: 2026-01-13NUCC 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.
Practice Associates & Co-Workers
Healthcare professionals and specialists practicing at this location or sharing practice phone/fax
Family Medicine - Sports Medicine
Doctor of Medicine (M.D.)
Physician Assistant
Physician Assistant (Certified)
Family Medicine - Sports Medicine
Doctor of Medicine (M.D.)
Career & Practice History Timeline
Chronological log of verified NPI updates, location relocations, credentials, and registry changes
Registered at 426 INDUSTRIAL AVE STE 130, WILLISTON, VT 054954449 (Tel: 8028781175)
Registered at 426 INDUSTRIAL AVE STE 130, WILLISTON, VT 054954449 (Tel: 8028781175)
Physician Assistant (License #055.0031747 in VT)
Registered at 206 CORNELIA ST, PLATTSBURGH, NY 129012878 (Tel: 5185615516)
Registered at 206 CORNELIA ST, PLATTSBURGH, NY 129012878 (Tel: 5185615516)
Physician Assistant (License #055.0031508 in VT)
Registered at 60 WINOOSKI FALLS WAY, WINOOSKI, VT 054042248 (Tel: 8025981605)
Registered at 60 WINOOSKI FALLS WAY, WINOOSKI, VT 054042248 (Tel: 8025981605)
Recorded as CASEY O'BRIEN, PA-C
NPI status registered as active in NPPES database
Registered at 360 HUNTINGTON AVE, BOSTON, MA 021155005 (Tel: 8025981605)
Registered at 360 HUNTINGTON AVE, BOSTON, MA 021155005 (Tel: 8025981605)
Recorded as CASEY O'BRIEN, PA-S
Student in an Organized Health Care Education/Training Program
First registered as active Individual Practitioner in NPPES Database.
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NPI Administrative Meta
Mailing Address
426 Industrial Ave Ste 130
Williston, VT 054954449
Phone: 8028781175
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