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Active NPI 1457565392 Individual Practitioner Female Practitioner

Cassandra Lynn Williamson , PA

Physician Assistant • Dayton, OH

✓ Accepts Medicare Assignment

Professional Overview & Biography Verified Profile Summary

Cassandra Williamson, PA is a certified Physician Assistant practicing in Dayton, OH. With approximately 22 years of clinical experience since completing medical education in 2004, Cassandra Williamson delivers high-quality medical care to the local community at 4340 CLYO RD STE 200.

Cassandra Williamson maintains professional affiliations with Digestive Specialists Inc, Premier Health Specialists Inc and accepts Medicare assignment.

Frequently performed procedures and clinical services include established patient outpatient office visit, measurement of liver stiffness. Full Medicare procedure pricing transparency rates and service volume details are listed on this profile.

Practice Location & Contact Primary Location

Practice Address

4340 Clyo Rd Ste 200

Dayton, OH 454597000

Telephone 9375347330
Fax 9373953682
Associated Practice Facility / Clinic
🏢 Digestive Specialists Inc Facility NPI 1174596563

Medicare Profile & Education

Medical School

Other

Graduation Year

2004

Medicare Assignment

✓ Accepts Assignment

Telehealth Flag

In-Person Only

Specialty Benchmarks & Practice Insights

Comparative analytics for Physician Assistant in Dayton, OH

Senior Veteran Specialist (>20 Yrs)
Practitioner Clinical Experience
22 Yrs +13.3 yrs vs City Avg
City Avg: 8.7 Yrs
State Avg: 9.7 Yrs
Regional Practice Density
250 Specialists

Practicing in Dayton, OH (5376 Statewide)

Telehealth Adoption Rate
5.2% Regional Adoption

In-Person Office Visits Only

Medicare Pricing Discount
54.8% Avg Savings

Under CMS Medicare Fee Schedule vs Standard Submitted Charges

Clinical Seniority & Experience Comparison

Dr. Williamson (22 Years) 22 Yrs
Dayton Specialty Average (8.7 Years) 8.7 Yrs

Performed Procedures & Service Volume

Top Medicare Part B procedures performed by this practitioner

CMS Official Data (2024)
Reporting Year:
HCPCS Code & Description Services Patients Submitted Charge Medicare Allowed
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more
265 160 $211.00 $106.65
99213 Established patient office or other outpatient visit, typically 15 minutes
59 55 $136.00 $75.38
91200 Measurement of liver stiffness
47 47 $110.00 $24.59

Medical Specialties & State Licenses

CMS Verified: 2019-12-09
Physician Assistant Primary Specialty

NUCC Taxonomy Code: 363A00000X

State License OH 50.002157

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.

Additional State Medicaid & Healthcare Payer Identifiers

Medicaid State Provider ID
0247616 (OH)

Hospital & Practice Group Affiliations

Digestive Specialists Inc

4340 Clyo Rd, Dayton, OH 454597000

Phone: 9373962602

Premier Health Specialists Inc

1 Wyoming St, Dayton, OH 454092722

Phone: 9372088000

Digestive Specialists Inc

77 W Eleanor Dr, Springboro, OH 450661615

Phone: 9375347330

Practice Associates & Co-Workers

Healthcare professionals and specialists practicing at this location or sharing practice phone/fax

30 Associated Practitioners
Dr. Malay Dey , MD

Internal Medicine - Gastroenterology

NPI 1104807155

Doctor of Medicine (M.D.)

Andrea Hoffman , PA-C

Physician Assistant

NPI 1124458856

Physician Assistant (Certified)

Dr. Christopher Barde , MD

Internal Medicine - Gastroenterology

NPI 1215918263

Doctor of Medicine (M.D.)

Dr. David Novick , MD

Internal Medicine - Gastroenterology

NPI 1265413652

Doctor of Medicine (M.D.)

Dr. Cassandra Steimle , DO

Internal Medicine - Gastroenterology

NPI 1265852941

Doctor of Osteopathic Medicine (D.O.)

Holly Griffin , PA-C

Physician Assistant

NPI 1285025957

Physician Assistant (Certified)

Career & Practice History Timeline

Chronological log of verified NPI updates, location relocations, credentials, and registry changes

9 Historical Events
🎓
Medical Taxonomy / Specialty Registered (Primary Specialty) December 09, 2019

Physician Assistant (License #50.002157 in OH)

📍
Updated Practice Location April 29, 2019

Registered at 4340 CLYO RD STE 200, DAYTON, OH 454597000 (Tel: 9375347330)

📍
Updated Business Mailing Address April 29, 2019

Registered at 4340 CLYO RD STE 200, DAYTON, OH 454597000 (Tel: 9373962602)

NPI Profile Active July 08, 2007

NPI status registered as active in NPPES database

📍
Updated Practice Location July 08, 2007

Registered at 999 BRUBAKER DR, KETTERING, OH 454293588 (Tel: 9372932169)

📍
Updated Business Mailing Address July 08, 2007

Registered at 999 BRUBAKER DR, KETTERING, OH 454293588 (Tel: 9372932169)

👤
Provider Name / Credentials Updated July 08, 2007

Recorded as CASSANDRA WILLIAMSON, PA

🎓
Medical Taxonomy / Specialty Registered (Primary Specialty) July 08, 2007

Physician Assistant (License #1062943 in OH)

🟢
Initial NPI Registration & Enumeration May 10, 2007

First registered as active Individual Practitioner in NPPES Database.

Patient & Community Reviews

Verified patient ratings, medical care experiences, and facility photos

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NPI Administrative Meta

NPI Number: 1457565392
Entity Type:
Individual Provider Physician, Nurse Practitioner, or Solo Healthcare Professional (Type 1 NPI)
Enumeration Date: May 10, 2007
Last Update: December 09, 2019
Sole Proprietor: No

Mailing Address

4340 Clyo Rd Ste 200

Dayton, OH 454597000

Phone: 9373962602

Public Domain Record This profile contains public domain information published by CMS and NPPES under the Freedom of Information Act (FOIA).
⚠️ Medical Disclaimer

This directory listing is for informational purposes only and does not constitute medical advice, diagnosis, or physician endorsement. If you are experiencing a medical emergency, please call 911 immediately.