Independent US Healthcare Provider Directory & Public Medical Database
Active NPI 1073909289 Individual Practitioner Female Practitioner

Ellen Marie Diefenderfer , PA-C

Physician Assistant • Columbus, OH

✓ Accepts Medicare Assignment Telehealth Available

Professional Overview & Biography Verified Profile Summary

Ellen Diefenderfer, PA-C is a certified Physician Assistant practicing in Columbus, OH. With approximately 12 years of clinical experience since completing medical education in 2014, Ellen Diefenderfer delivers high-quality medical care to the local community at 300 W 10TH AVE FL 2.

Ellen Diefenderfer is affiliated with Osu Surgery, Llc and accepts Medicare assignment . Telehealth and virtual consultation options are available for eligible patients.

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

Practice Location & Contact Primary Location

Practice Address

300 W 10th Ave Fl 2

Columbus, OH 432101280

Telephone 6142939059
Fax 6142930201
Associated Practice Facility / Clinic
🏢 Osu Neuroscience Center, Llc Facility NPI 1932199254

Medicare Profile & Education

Medical School

Other

Graduation Year

2014

Medicare Assignment

✓ Accepts Assignment

Telehealth Flag

Telehealth Services Available

Specialty Benchmarks & Practice Insights

Comparative analytics for Physician Assistant in Columbus, OH

Established Specialist (10-20 Yrs)
Practitioner Clinical Experience
12 Yrs +4.3 yrs vs City Avg
City Avg: 7.7 Yrs
State Avg: 9.7 Yrs
Regional Practice Density
731 Specialists

Practicing in Columbus, OH (5376 Statewide)

Telehealth Adoption Rate
9.7% Regional Adoption

✓ Offers Virtual Consultations

Medicare Pricing Discount
63.3% Avg Savings

Under CMS Medicare Fee Schedule vs Standard Submitted Charges

Clinical Seniority & Experience Comparison

Dr. Diefenderfer (12 Years) 12 Yrs
Columbus Specialty Average (7.7 Years) 7.7 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
99213 Established patient office or other outpatient visit, typically 15 minutes
33 32 $145.00 $53.27

Medical Specialties & State Licenses

CMS Verified: 2026-05-19
Physician Assistant Primary Specialty

NUCC Taxonomy Code: 363A00000X

State License OH 50.004326RX

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.

Hospital & Practice Group Affiliations

Osu Surgery, Llc

450 W 10th Ave, Columbus, OH 432101240

Phone: 6142933230

Osu Surgery, Llc

460 W 10th Ave, Columbus, OH 432101240

Phone: 6142932101

Osu Surgery, Llc

2050 Kenny Rd, Columbus, OH 432213502

Phone: 6143666675

Osu Surgery, Llc

452 W 10th Ave, Columbus, OH 432101240

Phone: 6142935502

Osu Surgery, Llc

410 W 10th Ave, Columbus, OH 432101240

Phone: 6142933230

Practice Associates & Co-Workers

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

20 Associated Practitioners
Jessica Waugh , APRN-CNP

Nurse Practitioner - Family

NPI 1104202407

Advanced Practice Registered Nurse - Certified Nurse Practitioner

Alexandra Quellhorst , PA-C

Physician Assistant

NPI 1114317252

Physician Assistant (Certified)

Alicia Perkins , PA-C

Physician Assistant

NPI 1174903033

Physician Assistant (Certified)

Dr. Peter Kneuertz , MD

Thoracic Surgery (Cardiothoracic Vascular Surgery)

NPI 1225352008

Doctor of Medicine (M.D.)

Mary Feldman , PA-C

Physician Assistant - Surgical

NPI 1346440286

Physician Assistant (Certified)

Melissa Smith , APRN-CNP

Nurse Practitioner

NPI 1346561974

Advanced Practice Registered Nurse - Certified Nurse Practitioner

Career & Practice History Timeline

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

14 Historical Events
📍
Updated Practice Location May 19, 2026

Registered at 300 W 10TH AVE FL 2, COLUMBUS, OH 432101280 (Tel: 6142939059)

🎓
Medical Taxonomy / Specialty Registered (Primary Specialty) May 20, 2025

Physician Assistant (License #50.004326RX in OH)

📍
Updated Business Mailing Address February 12, 2020

Registered at 700 ACKERMAN RD STE 2120, COLUMBUS, OH 432021559 (Tel: 6142939059)

NPI Profile Active January 31, 2018

NPI status registered as active in NPPES database

📍
Updated Practice Location January 31, 2018

Registered at 300 W 10TH AVE, COLUMBUS, OH 432101280 (Tel: 6142939059)

📍
Updated Business Mailing Address January 31, 2018

Registered at 700 ACKERMAN RD, SUITE 570, COLUMBUS, OH 432021559 (Tel: 6142939059)

👤
Provider Name / Credentials Updated January 31, 2018

Recorded as ELLEN DIEFENDERFER, PA-C

🎓
Medical Taxonomy / Specialty Registered (Primary Specialty) January 31, 2018

Physician Assistant (License #50004326 in OH)

NPI Profile Active February 08, 2016

NPI status registered as active in NPPES database

📍
Updated Practice Location February 08, 2016

Registered at 300 W 10TH AVE, COLUMBUS, OH 432101280 (Tel: 6142939059)

📍
Updated Business Mailing Address February 08, 2016

Registered at 700 ACKERMAN RD, SUITE 570, COLUMBUS, OH 432021559 (Tel: 6142939059)

👤
Provider Name / Credentials Updated February 08, 2016

Recorded as ELLEN VANDERBURGH, PA-C

🎓
Medical Taxonomy / Specialty Registered (Primary Specialty) February 08, 2016

Physician Assistant (License #50004326 in OH)

🟢
Initial NPI Registration & Enumeration April 14, 2015

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: 1073909289
Entity Type:
Individual Provider Physician, Nurse Practitioner, or Solo Healthcare Professional (Type 1 NPI)
Enumeration Date: April 14, 2015
Last Update: May 19, 2026
Sole Proprietor: No

Mailing Address

700 Ackerman Rd Ste 2120

Columbus, OH 432021559

Phone: 6142939059

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.