Active NPI 1962700757 Individual Practitioner Female Practitioner

Stephanie Michelle Armstrong , PA-C

Physician Assistant • O Fallon, IL

✓ Accepts Medicare Assignment

Professional Overview & Biography Verified Profile Summary

Stephanie Armstrong, PA-C is a certified Physician Assistant practicing in O Fallon, IL. With approximately 15 years of clinical experience since completing medical education in 2011, Stephanie Armstrong delivers high-quality medical care to the local community at 320 E HIGHWAY 50.

Stephanie Armstrong maintains professional affiliations with Total Access Urgent Care Pc, Tauc Il Pc and accepts Medicare assignment.

Frequently performed procedures and clinical services include injection, dexamethasone sodium phosphate, 1 mg, established patient outpatient office visit, amplifed dna or rna probe detection of severe acute respiratory syndrome coronavirus 2 (covid-19) antigen. Full Medicare procedure pricing transparency rates and service volume details are listed on this profile.

Practice Location & Contact Primary Location

Practice Address

320 E Highway 50

O Fallon, IL 622692704

Telephone 6186243368

Associated Practice Facility / Clinic

🏢 Midwest Emergency Tell City, Inc Facility NPI 1699447540

Medicare Profile & Education

Medical School

Other

Graduation Year

2011

Medicare Assignment

✓ Accepts Assignment

Telehealth Flag

In-Person Only

Specialty Benchmarks & Practice Insights

Comparative analytics for Physician Assistant in O Fallon, IL

Established Specialist (10-20 Yrs)

Practitioner Clinical Experience

15 Yrs +6.4 yrs vs City Avg

City Avg: 8.6 Yrs

State Avg: 11.7 Yrs

Regional Practice Density

27 Specialists

Practicing in O Fallon, IL (4958 Statewide)

Telehealth Adoption Rate

14.8% Regional Adoption

In-Person Office Visits Only

Medicare Pricing Discount

77.2% Avg Savings

Under CMS Medicare Fee Schedule vs Standard Submitted Charges

Clinical Seniority & Experience Comparison

Dr. Armstrong (15 Years) 15 Yrs

O Fallon Specialty Average (8.6 Years) 8.6 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
J1100 Injection, dexamethasone sodium phosphate, 1 mg	220	30	$10.00	$0.11
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	129	124	$318.00	$99.65
99213 Established patient office or other outpatient visit, typically 15 minutes	89	89	$182.27	$71.58
87635 Amplifed dna or rna probe detection of severe acute respiratory syndrome coronavirus 2 (covid-19) antigen	71	69	$167.90	$48.92
J2405 Injection, ondansetron hydrochloride, per 1 mg	64	15	$10.00	$0.08
87502 Detection test by nucleic acid for multiple types influenza virus	56	54	$270.00	$90.70
71046 X-ray of chest, 2 views	54	53	$213.18	$26.48
81003 Automated urinalysis test	49	48	$46.80	$2.07
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	42	42	$490.50	$134.94
85018 Blood count, hemoglobin	41	38	$7.00	$2.16
82550 Creatine kinase (cardiac enzyme) level, total	41	37	$13.02	$5.93
80051 Blood test panel for electrolytes (sodium potassium, chloride, carbon dioxide)	39	36	$14.02	$6.87
82565 Blood creatinine level	38	35	$10.24	$5.02
96372 Injection beneath the skin or into muscle for therapy, diagnosis, or prevention	33	31	$69.43	$11.38
J7030 Infusion, normal saline solution , 1000 cc	33	29	$10.00	$2.22
84520 Urea nitrogen level to assess kidney function	33	32	$7.90	$3.87
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more	31	31	$320.82	$89.99
J1885 Injection, ketorolac tromethamine, per 15 mg	23	14	$10.00	$0.71
87651 Detection test for Strep (Streptococcus, group A)	19	19	$135.00	$32.79
96361 Hydration infusion into a vein	18	14	$40.00	$7.48
93000 Routine ekg using at least 12 leads including interpretation and report	16	16	$123.00	$11.36
70450 Ct scan head or brain without contrast	16	16	$573.24	$47.40
96374 Injection of drug or substance into a vein for therapy, diagnosis, or prevention	13	12	$103.00	$24.08
73630 X-ray of foot, minimum of 3 views	13	13	$170.49	$26.93
82247 Bilirubin level	11	11	$9.71	$4.92
84075 Phosphatase (enzyme) level, alkaline	11	11	$10.01	$5.08
82150 Amylase (enzyme) level	11	11	$32.14	$6.35

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	180	176	$318.13	$105.33
J1100 Injection, dexamethasone sodium phosphate, 1 mg	164	25	$10.00	$0.12
87635 Amplifed dna or rna probe detection of severe acute respiratory syndrome coronavirus 2 (covid-19) antigen	92	92	$175.00	$50.28
J2405 Injection, ondansetron hydrochloride, per 1 mg	80	20	$10.00	$0.09
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	66	66	$490.50	$138.25
87502 Detection test by nucleic acid for multiple types influenza virus	65	64	$270.00	$93.88
81003 Automated urinalysis test	51	49	$46.80	$2.20
71046 X-ray of chest, 2 views	49	48	$213.18	$27.85
85018 Blood count, hemoglobin	36	36	$7.00	$2.26
82550 Creatine kinase (cardiac enzyme) level, total	35	33	$13.02	$6.20
80051 Blood test panel for electrolytes (sodium potassium, chloride, carbon dioxide)	35	33	$14.02	$6.87
82565 Blood creatinine level	34	32	$10.24	$5.02
99213 Established patient office or other outpatient visit, typically 15 minutes	33	33	$182.06	$75.81
J7030 Infusion, normal saline solution , 1000 cc	33	31	$10.00	$2.39
84520 Urea nitrogen level to assess kidney function	30	30	$7.90	$3.87
96372 Injection beneath the skin or into muscle for therapy, diagnosis, or prevention	28	27	$73.71	$11.85
87880 Detection test by immunoassay with direct visual observation for streptococcus, group a (strep)	21	21	$92.72	$15.49
99215 Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more	21	21	$429.90	$150.44
93000 Routine ekg using at least 12 leads including interpretation and report	20	20	$123.00	$12.12
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more	14	14	$320.82	$91.70
96361 Hydration infusion into a vein	14	12	$40.00	$9.13
96374 Injection of drug or substance into a vein for therapy, diagnosis, or prevention	13	13	$103.00	$28.65
84075 Phosphatase (enzyme) level, alkaline	12	12	$10.01	$5.08
84460 Liver enzyme (sgpt), level	12	12	$10.23	$5.19
84450 Liver enzyme (sgot), level	12	12	$9.39	$5.08
84155 Total protein level, blood	12	12	$6.74	$3.60
82247 Bilirubin level	12	12	$9.71	$4.92
82150 Amylase (enzyme) level	12	12	$32.14	$6.35
82040 Albumin (protein) level	12	12	$9.58	$4.85
73630 X-ray of foot, minimum of 3 views	12	12	$170.49	$28.81
74176 Ct scan of abdomen and pelvis without contrast	11	11	$1432.17	$129.87

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
Q9967 Low osmolar contrast material, 300-399 mg/ml iodine concentration, per ml	1,125	11	$1.50	$0.12
J1100 Injection, dexamethasone sodium phosphate, 1 mg	208	37	$10.00	$0.12
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	161	160	$318.00	$107.45
87635 Amplifed dna or rna probe detection of severe acute respiratory syndrome coronavirus 2 (covid-19) antigen	110	110	$175.00	$50.70
J2405 Injection, ondansetron hydrochloride, per 1 mg	88	20	$10.00	$0.08
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	68	68	$490.50	$140.43
87502 Detection test by nucleic acid for multiple types influenza virus	53	53	$270.00	$94.60
71046 X-ray of chest, 2 views	53	52	$213.18	$28.55
99213 Established patient office or other outpatient visit, typically 15 minutes	49	49	$186.42	$74.07
96372 Injection beneath the skin or into muscle for therapy, diagnosis, or prevention	39	39	$73.71	$12.05
J7030 Infusion, normal saline solution , 1000 cc	34	33	$10.00	$2.62
82550 Creatine kinase (cardiac enzyme) level, total	31	31	$13.02	$6.40
82565 Blood creatinine level	30	30	$10.24	$5.04
80051 Blood test panel for electrolytes (sodium potassium, chloride, carbon dioxide)	30	30	$14.02	$6.90
84520 Urea nitrogen level to assess kidney function	30	30	$7.90	$3.89
81002 Urinalysis, manual test	29	29	$30.00	$3.44
85018 Blood count, hemoglobin	28	28	$20.71	$2.34
93000 Routine ekg using at least 12 leads including interpretation and report	23	23	$123.00	$12.03
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more	22	22	$320.48	$91.42
99215 Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more	21	20	$429.90	$151.66
96361 Hydration infusion into a vein	20	16	$40.00	$10.87
96374 Injection of drug or substance into a vein for therapy, diagnosis, or prevention	18	17	$103.00	$33.11
99205 New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more	18	18	$613.35	$185.63
70450 Ct scan head or brain without contrast	17	17	$573.24	$80.46
82947 Blood glucose (sugar) level	16	16	$7.86	$3.86
73630 X-ray of foot, minimum of 3 views	14	14	$170.49	$29.32
84460 Liver enzyme (sgpt), level	13	13	$10.23	$5.24
74176 Ct scan of abdomen and pelvis without contrast	13	13	$1432.17	$161.76
84450 Liver enzyme (sgot), level	13	13	$9.39	$5.12
84075 Phosphatase (enzyme) level, alkaline	13	13	$10.01	$5.12
82247 Bilirubin level	13	13	$9.71	$4.96
82150 Amylase (enzyme) level	13	13	$32.14	$6.41
82040 Albumin (protein) level	13	13	$9.58	$4.89
84155 Total protein level, blood	13	13	$6.74	$3.63

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
Q9967 Low osmolar contrast material, 300-399 mg/ml iodine concentration, per ml	1,450	12	$1.50	$0.12
J1100 Injection, dexamethasone sodium phosphate, 1 mg	124	26	$10.00	$0.16
99213 Established patient office or other outpatient visit, typically 15 minutes	93	89	$182.06	$77.57
87635 Amplifed dna or rna probe detection of severe acute respiratory syndrome coronavirus 2 (covid-19) antigen	83	83	$137.95	$50.75
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	73	73	$317.88	$110.60
J2405 Injection, ondansetron hydrochloride, per 1 mg	68	16	$10.00	$0.09
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more	53	53	$320.82	$96.21
87811 Detection test by immunoassay with direct visual observation for severe acute respiratory syndrome coronavirus 2 (covid-19)	53	53	$125.47	$41.38
71046 X-ray of chest, 2 views	40	40	$213.18	$28.18
81002 Urinalysis, manual test	33	33	$30.00	$3.48
80047 Blood test, basic group of blood chemicals (calcium, ionized)	33	31	$66.11	$13.73
96372 Injection beneath the skin or into muscle for therapy, diagnosis, or prevention	32	30	$72.66	$11.79
85014 Red blood cell concentration measurement	31	29	$56.45	$2.37
85018 Blood count, hemoglobin	31	29	$54.97	$2.37
J7030 Infusion, normal saline solution , 1000 cc	30	27	$10.00	$2.77
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	25	25	$490.50	$144.20
99212 Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more	25	25	$111.90	$48.23
99202 New patient office or other outpatient visit, typically 20 minutes	23	23	$146.26	$62.75
87502 Detection test by nucleic acid for multiple types influenza virus	21	21	$270.00	$95.80
70450 Ct scan head or brain without contrast	17	17	$573.24	$86.54
99215 Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more	16	16	$429.90	$155.58
84450 Liver enzyme (sgot), level	15	15	$9.39	$5.18
84155 Total protein level, blood	15	15	$6.74	$3.67
84075 Phosphatase (enzyme) level, alkaline	15	15	$10.01	$5.18
82247 Bilirubin level	15	15	$9.71	$5.02
82150 Amylase (enzyme) level	15	15	$32.14	$6.48
82040 Albumin (protein) level	15	15	$9.58	$4.95
84460 Liver enzyme (sgpt), level	15	15	$10.23	$5.30
96374 Injection of drug or substance into a vein for therapy, diagnosis, or prevention	14	14	$103.00	$35.21
93000 Routine ekg using at least 12 leads including interpretation and report	14	14	$123.00	$12.67
73630 X-ray of foot, minimum of 3 views	12	12	$170.49	$29.40

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99283 Emergency department visit with low level of medical decision making	43	42	$320.95	$55.03
99284 Emergency department visit with moderate level of medical decision making	37	37	$553.22	$104.54
99285 Emergency department visit for life threatening or functioning severity	29	28	$755.76	$149.34
99213 Established patient office or other outpatient visit, typically 15 minutes	20	20	$163.85	$44.53
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	17	17	$251.47	$68.01
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	15	15	$358.80	$107.89

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99283 Emergency department visit with low level of medical decision making	97	89	$430.41	$53.94
99284 Emergency department visit with moderate level of medical decision making	40	39	$637.75	$102.56
99285 Emergency department visit for life threatening or functioning severity	23	22	$959.83	$151.55

Medical Specialties & State Licenses

Physician Assistant Primary Specialty

NUCC 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.

Hospital & Practice Group Affiliations

Total Access Urgent Care Pc

9538 Gravois Rd, Affton, MO 631234558

Phone: 3149612255

Total Access Urgent Care Pc

3114 S Grand Blvd, Saint Louis, MO 631181012

Phone: 3149612255

Total Access Urgent Care Pc

10923 Olive Blvd, Creve Coeur, MO 631417740

Phone: 3149612255

Total Access Urgent Care Pc

408 Brothers Dr, Festus, MO 630282139

Phone: 3149612255

Total Access Urgent Care Pc

8213 Delmar Blvd, Saint Louis, MO 631242104

Phone: 3149612255

Total Access Urgent Care Pc

2980 Dougherty Ferry Rd, Saint Louis, MO 631223366

Phone: 3149612255

Total Access Urgent Care Pc

4400 Telegraph Rd, Saint Louis, MO 631293316

Phone: 3149612255

Total Access Urgent Care Pc

4318 Loughborough Ave, Saint Louis, MO 631162104

Phone: 3149612255

Total Access Urgent Care Pc

2060 Hampton Ave, Saint Louis, MO 631392903

Phone: 3149612255

Total Access Urgent Care Pc

12616 Lamplighter Square Shopping, Saint Louis, MO 631282746

Phone: 3149612255

Total Access Urgent Care Pc

6900 Chippewa St, Saint Louis, MO 631093038

Phone: 3149612255

Total Access Urgent Care Pc

9556 Manchester Rd, Saint Louis, MO 631191313

Phone: 3149612255

Tauc Il Pc

1103 Central Park Dr, O Fallon, IL 622691770

Phone: 6182155703

Practice Associates & Co-Workers

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

27 Associated Practitioners

Dr. Arthur Sippo , MD

Emergency Medicine

NPI 1023042165

Doctor of Medicine (M.D.)

Maria Galanos

Emergency Medicine

NPI 1073609814

Dr. Jae Yang , MD

Emergency Medicine

NPI 1093814675

Doctor of Medicine (M.D.)

Derek Pechacek , FNP-C

Nurse Practitioner - Family

NPI 1114356607

Family Nurse Practitioner (Certified)

Dr. Hayden Smith , MD

Family Medicine

NPI 1184752776

Doctor of Medicine (M.D.)

Dr. Vicky Hwang , MD

Emergency Medicine

NPI 1205332194

Doctor of Medicine (M.D.)

Career & Practice History Timeline

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

6 Historical Events

✅

NPI Profile Active March 19, 2013

NPI status registered as active in NPPES database

📍

Updated Practice Location March 19, 2013

Registered at 320 E HIGHWAY 50, O FALLON, IL 622692704 (Tel: 6186243368)

📍

Updated Business Mailing Address March 19, 2013

Registered at 320 E HIGHWAY 50, O FALLON, IL 622692704

👤

Provider Name / Credentials Updated March 19, 2013

Recorded as STEPHANIE ARMSTRONG, PA-C

🎓

Medical Taxonomy / Specialty Registered (Primary Specialty) March 19, 2013

Physician Assistant

🟢

Initial NPI Registration & Enumeration March 03, 2011

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: 1962700757

Entity Type:

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

Enumeration Date: March 03, 2011

Last Update: March 19, 2013

Sole Proprietor: Yes

Update or Correct Profile

Mailing Address

320 E Highway 50

O Fallon, IL 622692704

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.