Active NPI 1649792227 Individual Practitioner Female Practitioner

Grace O'brien Johnson , PA-C

Physician Assistant • Hilliard, OH

✓ Accepts Medicare Assignment

Professional Overview & Biography Verified Profile Summary

Grace Johnson, PA-C is a certified Physician Assistant practicing in Hilliard, OH. With approximately 9 years of clinical experience since completing medical education in 2017, Grace Johnson delivers high-quality medical care to the local community at 3995 COSGRAY RD.

Grace Johnson is affiliated with Osu General Internal Medicine Llc and accepts Medicare assignment.

Frequently performed procedures and clinical services include established patient outpatient office visit, insertion of needle into vein for collection of blood sample, new 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

3995 Cosgray Rd

Hilliard, OH 430269880

Telephone 6142933200

Associated Practice Facility / Clinic

🏢 Osu Neuroscience Center, Llc Facility NPI 1932199254

Medicare Profile & Education

Medical School

Other

Graduation Year

2017

Medicare Assignment

✓ Accepts Assignment

Telehealth Flag

In-Person Only

Specialty Benchmarks & Practice Insights

Comparative analytics for Physician Assistant in Hilliard, OH

Experienced Practitioner (5-10 Yrs)

Practitioner Clinical Experience

9 Yrs -2.3 yrs vs City Avg

City Avg: 11.3 Yrs

State Avg: 9.7 Yrs

Regional Practice Density

20 Specialists

Practicing in Hilliard, OH (5376 Statewide)

Telehealth Adoption Rate

20.0% Regional Adoption

In-Person Office Visits Only

Medicare Pricing Discount

63.4% Avg Savings

Under CMS Medicare Fee Schedule vs Standard Submitted Charges

Clinical Seniority & Experience Comparison

Dr. Johnson (9 Years) 9 Yrs

Hilliard Specialty Average (11.3 Years) 11.3 Yrs

Performed Procedures & Service Volume

Top Medicare Part B procedures performed by this practitioner

CMS Official Data (2023)

Reporting Year:

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99213 Established patient office or other outpatient visit, typically 15 minutes	42	41	$211.29	$76.48
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	12	12	$220.00	$81.32

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99213 Established patient office or other outpatient visit, typically 15 minutes	169	151	$205.90	$77.16
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	67	65	$299.39	$105.38
36415 Insertion of needle into vein for collection of blood sample	44	43	$8.00	$2.92
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more	42	42	$296.86	$96.35
81003 Automated urinalysis test	40	39	$8.00	$2.16
85025 Complete blood cell count (red cells, white blood cell, platelets), automated test and automated differential white blood cell count	23	23	$26.00	$7.47
93000 Routine ekg using at least 12 leads including interpretation and report	16	16	$52.00	$11.85
87880 Detection test by immunoassay with direct visual observation for streptococcus, group a (strep)	15	15	$50.00	$16.29
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	14	14	$453.50	$137.07

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99213 Established patient office or other outpatient visit, typically 15 minutes	131	122	$198.74	$77.70
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	57	57	$288.00	$109.33
81003 Automated urinalysis test	36	36	$8.00	$2.25
36415 Insertion of needle into vein for collection of blood sample	35	34	$8.00	$3.00
99212 Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more	22	21	$115.23	$48.06
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more	22	22	$289.00	$96.01
85025 Complete blood cell count (red cells, white blood cell, platelets), automated test and automated differential white blood cell count	18	18	$26.00	$7.77
99202 New patient office or other outpatient visit, typically 20 minutes	16	16	$198.75	$62.44
93000 Routine ekg using at least 12 leads including interpretation and report	14	14	$52.00	$12.66

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	146	141	$265.51	$91.86
99213 Established patient office or other outpatient visit, typically 15 minutes	67	64	$188.25	$64.04
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more	42	42	$276.43	$90.15
36415 Insertion of needle into vein for collection of blood sample	29	28	$8.00	$2.98
81003 Automated urinalysis test	28	27	$8.00	$2.23
99202 New patient office or other outpatient visit, typically 20 minutes	24	24	$196.00	$65.07
93000 Routine ekg using at least 12 leads including interpretation and report	15	15	$52.00	$13.82
85025 Complete blood cell count (red cells, white blood cell, platelets), automated test and automated differential white blood cell count	12	12	$26.00	$7.69

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	40	38	$262.00	$91.34
99284 Emergency department visit with moderate level of medical decision making	35	35	$667.00	$99.02
99283 Emergency department visit with low level of medical decision making	12	12	$349.00	$52.32
93010 Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only	11	11	$58.00	$7.08

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99284 Emergency department visit with moderate level of medical decision making	41	40	$667.00	$98.71
93010 Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only	26	25	$56.00	$7.07
99283 Emergency department visit with low level of medical decision making	17	17	$349.00	$51.98

Medical Specialties & State Licenses

CMS Verified: 2025-08-21

Physician Assistant Primary Specialty

NUCC Taxonomy Code: 363A00000X

State License OH 50.005154RX

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 General Internal Medicine Llc

2050 Kenny Rd, Columbus, OH 432213502

Phone: 6142938054

Osu General Internal Medicine Llc

1800 Zollinger Rd, Columbus, OH 432212849

Phone: 6142937417

Osu General Internal Medicine Llc

3995 Cosgray Rd, Hilliard, OH 430269880

Phone: 6142933200

Osu General Internal Medicine Llc

445 Rocky Fork Blvd, Gahanna, OH 432303336

Phone: 6143837660

Practice Associates & Co-Workers

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

9 Associated Practitioners

Stefanie Smith , PA-C

Physician Assistant

NPI 1033123054

Physician Assistant (Certified)

Andreea Zimmerman , PA-C

Physician Assistant

NPI 1083152805

Physician Assistant (Certified)

Adam Snyder

Occupational Therapist - Neurorehabilitation

NPI 1083396360

Barbara Stefanini , PA-C

Physician Assistant

NPI 1144559329

Physician Assistant (Certified)

Erin Hughes , APRNCNP

Nurse Practitioner - Family

NPI 1336217215

Advanced Practice Registered Nurse - Certified Nurse Practitioner

Lindsey Tann , APRN-CNP

Nurse Practitioner

NPI 1447658026

Advanced Practice Registered Nurse - Certified Nurse Practitioner

Career & Practice History Timeline

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

15 Historical Events

📍

Updated Practice Location August 21, 2025

Registered at 3995 COSGRAY RD, HILLIARD, OH 430269880 (Tel: 6142933200)

🎓

Medical Taxonomy / Specialty Registered (Primary Specialty) August 21, 2025

Physician Assistant (License #50.005154RX in OH)

📍

Updated Practice Location September 10, 2024

Registered at 5263 NIKE STATION WAY, HILLIARD, OH 430267449 (Tel: 6148762100)

📍

Updated Practice Location May 16, 2023

Registered at 410 W 10TH AVE, COLUMBUS, OH 432101240 (Tel: 6142938305)

📍

Updated Business Mailing Address May 16, 2023

Registered at 700 ACKERMAN RD STE 2120, COLUMBUS, OH 432021559 (Tel: 6142938305)

👤

Provider Name / Credentials Updated April 13, 2020

Recorded as GRACE JOHNSON, PA-C

📍

Updated Practice Location October 23, 2019

Registered at 2335 SEMINOLE LN STE 200, CHARLOTTESVILLE, VA 22901 (Tel: 4349757700)

📍

Updated Business Mailing Address October 23, 2019

Registered at PO BOX 9007, CHARLOTTESVILLE, VA 229069007 (Tel: 4342951000)

🎓

Medical Taxonomy / Specialty Registered (Primary Specialty) October 23, 2019

Physician Assistant (License #0110006680 in VA)

✅

NPI Profile Active July 14, 2017

NPI status registered as active in NPPES database

📍

Updated Practice Location July 14, 2017

Registered at 9105 CEDAR AVE, CLEVELAND, OH 441950001 (Tel: 2164459613)

📍

Updated Business Mailing Address July 14, 2017

Registered at 24826 FAWN DR, NORTH OLMSTED, OH 440701251

👤

Provider Name / Credentials Updated July 14, 2017

Recorded as GRACE O'BRIEN, PA-C

🎓

Medical Taxonomy / Specialty Registered (Primary Specialty) July 14, 2017

Physician Assistant (License #50.005154RX in OH)

🟢

Initial NPI Registration & Enumeration July 14, 2017

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: 1649792227

Entity Type:

Individual Provider Physician, Nurse Practitioner, or Solo Healthcare Professional (Type 1 NPI)

Enumeration Date: July 14, 2017

Last Update: August 21, 2025

Sole Proprietor: No

Update or Correct Profile

Mailing Address

700 Ackerman Rd Ste 2120

Columbus, OH 432021559

Phone: 6142933200

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.