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Active NPI 1568453132 Individual Practitioner Male Practitioner

Mark Samuel Johnson , PA-C MT ASCP

Physician Assistant • Saint Charles, MO

Professional Overview & Biography Verified Profile Summary

Mark Johnson, PA-C MT ASCP is a certified Physician Assistant practicing in Saint Charles, MO. With approximately 22 years of clinical experience since completing medical education in 2004, Mark Johnson delivers high-quality medical care to the local community at 300 1ST CAPITOL DR.

Mark Johnson does not directly accept Medicare assignment.

Frequently performed procedures and clinical services include subsequent nursing facility care with high level of medical decision making, per day, if using time, at least, emergency department visit with moderate level of medical decision making, emergency department visit for life threatening or functioning severity. Full Medicare procedure pricing transparency rates and service volume details are listed on this profile.

Practice Location & Contact Primary Location

Practice Address

300 1st Capitol Dr

Saint Charles, MO 633012844

Telephone 6369475000
Associated Practice Facility / Clinic

Medicare Profile & Education

Medical School

Other

Graduation Year

2004

Medicare Assignment

Not Specified

Telehealth Flag

In-Person Only

Specialty Benchmarks & Practice Insights

Comparative analytics for Physician Assistant in Saint Charles, MO

Senior Veteran Specialist (>20 Yrs)
Practitioner Clinical Experience
22 Yrs +10.5 yrs vs City Avg
City Avg: 11.5 Yrs
State Avg: 10.3 Yrs
Regional Practice Density
22 Specialists

Practicing in Saint Charles, MO (1802 Statewide)

Telehealth Adoption Rate
22.7% Regional Adoption

In-Person Office Visits Only

Medicare Pricing Discount
86.6% Avg Savings

Under CMS Medicare Fee Schedule vs Standard Submitted Charges

Clinical Seniority & Experience Comparison

Dr. Johnson (22 Years) 22 Yrs
Saint Charles Specialty Average (11.5 Years) 11.5 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
99310 Subsequent nursing facility care with high level of medical decision making, per day, if using time, at least 45 minutes
103 41 $270.00 $125.39
99284 Emergency department visit with moderate level of medical decision making
80 79 $1271.00 $97.83
99285 Emergency department visit for life threatening or functioning severity
79 78 $1895.00 $141.34
99310 Subsequent nursing facility care with high level of medical decision making, per day, if using time, at least 45 minutes
49 20 $267.24 $125.37
99309 Subsequent nursing facility care with moderate level of medical decision making, per day, if using time, at least 30 minutes
47 26 $182.00 $87.82
99283 Emergency department visit with low level of medical decision making
18 17 $852.00 $57.99

Medical Specialties & State Licenses

CMS Verified: 2020-03-13
Physician Assistant Primary Specialty

NUCC Taxonomy Code: 363A00000X

State License MO 2010013488

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.

Secondary Practice Locations

11111 Wilcrest Green Dr, Suite 210

Houston, TX 770424813

Phone: 3375212836

100 Medical Plz

Lake St Louis, MO 633671366

Phone: 6366255200

Practice Associates & Co-Workers

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

40 Associated Practitioners
Kathleen Christlieb , PA

Physician Assistant

NPI 1013112176

Physician Assistant

Angela Glass , MSOTR, L

Occupational Therapist

NPI 1053246009
Dr. Anthony Jennings , MD

Emergency Medicine

NPI 1073568168

Doctor of Medicine (M.D.)

Margaux Weller , FNP-BC

Nurse Practitioner - Family

NPI 1083153589

Family Nurse Practitioner (Board Certified)

Erin Bass

Speech-Language Pathologist

NPI 1093533242
Dr. Frederic Simowitz , MD

Neurological Surgery

NPI 1104879162

Doctor of Medicine (M.D.)

Career & Practice History Timeline

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

8 Historical Events
📍
Updated Practice Location March 13, 2020

Registered at 300 1ST CAPITOL DR, SAINT CHARLES, MO 633012844 (Tel: 6369475000)

📍
Updated Business Mailing Address March 13, 2020

Registered at 200 CORPORATE BLVD, LAFAYETTE, LA 705083870 (Tel: 8008939698)

NPI Profile Active April 26, 2015

NPI status registered as active in NPPES database

📍
Updated Practice Location April 26, 2015

Registered at 11111 WILCREST GREEN DR, SUITE 210, HOUSTON, TX 770424813 (Tel: 3375212836)

📍
Updated Business Mailing Address April 26, 2015

Registered at 56 ROTH CT, WENTZVILLE, MO 633856889 (Tel: 6366985455)

👤
Provider Name / Credentials Updated April 26, 2015

Recorded as MARK JOHNSON, PA-C MT ASCP

🎓
Medical Taxonomy / Specialty Registered (Primary Specialty) April 26, 2015

Physician Assistant (License #2010013488 in MO)

🟢
Initial NPI Registration & Enumeration November 02, 2005

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: 1568453132
Entity Type:
Individual Provider Physician, Nurse Practitioner, or Solo Healthcare Professional (Type 1 NPI)
Enumeration Date: November 02, 2005
Last Update: March 13, 2020
Sole Proprietor: No

Mailing Address

200 Corporate Blvd

Lafayette, LA 705083870

Phone: 8008939698

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.