Active NPI 1982188389 Individual Practitioner Female Practitioner

Mary Withoelter , NURSE PRACTITIONER

Nurse Practitioner • Ofallon, MO

✓ Accepts Medicare Assignment

Public Directory Information & Medical Disclaimer

This profile is compiled from official public domain records provided by CMS and the NPPES registry. TRUE-MEDINFO is an independent reference directory and does not provide medical advice, diagnosis, or treatment recommendations. Always consult a licensed medical professional for personal health decisions.

Professional Overview & Biography Verified Profile Summary

Mary Withoelter, NURSE PRACTITIONER is a registered Nurse Practitioner practitioner in Ofallon, MO. With approximately 8 years of clinical practice since completing medical education in 2018, Mary Withoelter provides healthcare services at the registered practice location at 2630 STATE HIGHWAY K.

Mary Withoelter maintains professional affiliations with Physician Groups Lc, Total Access Urgent Care Pc and accepts Medicare assignment.

Frequently performed procedures and clinical services include injection, dexamethasone sodium phosphate, 1 mg, established patient outpatient office visit, detection test by nucleic acid for multiple types influenza virus. Full Medicare procedure pricing transparency rates and service volume details are listed on this profile.

Practice Location & Contact Primary Location

Practice Address

2630 State Highway K

Ofallon, MO 63368

Telephone 6369805300

Fax 6369805344

Medicare Profile & Education

Medical School

Other

Graduation Year

2018

Medicare Assignment

✓ Accepts Assignment

Telehealth Flag

In-Person Only

Specialty Benchmarks & Practice Insights

Comparative analytics for Nurse Practitioner in Ofallon, MO

Experienced Practitioner (5-10 Yrs)

Practitioner Clinical Experience

8 Yrs +0.5 yrs vs City Avg

City Avg: 7.5 Yrs

State Avg: 11.7 Yrs

Regional Practice Density

2 Specialists

Practicing in Ofallon, MO (1750 Statewide)

Telehealth Adoption Rate

0.0% Regional Adoption

In-Person Office Visits Only

Medicare Pricing Discount

73.4% Avg Savings

Under CMS Medicare Fee Schedule vs Standard Submitted Charges

Clinical Seniority & Experience Comparison

Dr. Withoelter (8 Years) 8 Yrs

Ofallon Specialty Average (7.5 Years) 7.5 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
J1100 Injection, dexamethasone sodium phosphate, 1 mg	384	52	$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	99	99	$318.00	$102.34
87502 Detection test by nucleic acid for multiple types influenza virus	66	66	$270.00	$92.46
87635 Amplifed dna or rna probe detection of severe acute respiratory syndrome coronavirus 2 (covid-19) antigen	66	66	$166.27	$49.52
99213 Established patient office or other outpatient visit, typically 15 minutes	59	58	$182.06	$72.48
96372 Injection beneath the skin or into muscle for therapy, diagnosis, or prevention	55	50	$69.80	$11.36
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	50	50	$490.50	$132.52
71046 X-ray of chest, 2 views	45	44	$213.18	$25.94
81003 Automated urinalysis test	45	45	$46.80	$2.15
85018 Blood count, hemoglobin	37	37	$10.89	$2.26
80051 Blood test panel for electrolytes (sodium potassium, chloride, carbon dioxide)	37	36	$14.71	$6.68
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more	36	36	$320.82	$87.16
82550 Creatine kinase (cardiac enzyme) level, total	34	33	$13.02	$6.38
82565 Blood creatinine level	33	32	$10.24	$5.02
84520 Urea nitrogen level to assess kidney function	31	31	$7.90	$3.87
87651 Detection test for Strep (Streptococcus, group A)	30	30	$135.00	$33.24
J7030 Infusion, normal saline solution , 1000 cc	28	25	$10.00	$2.52
J7613 Albuterol, inhalation solution, fda-approved final product, non-compounded, administered through dme, unit dose, 1 mg	20	12	$20.00	$0.06
84155 Total protein level, blood	15	15	$6.74	$3.60
84075 Phosphatase (enzyme) level, alkaline	15	15	$10.01	$5.08
82247 Bilirubin level	15	15	$9.71	$4.92
82150 Amylase (enzyme) level	15	15	$32.14	$6.35
82040 Albumin (protein) level	15	15	$9.58	$4.85
84450 Liver enzyme (sgot), level	15	15	$9.39	$5.08
84460 Liver enzyme (sgpt), level	15	15	$10.23	$5.19
93000 Routine ekg using at least 12 leads including interpretation and report	13	13	$123.00	$11.40
J7644 Ipratropium bromide, inhalation solution, fda-approved final product, non-compounded, administered through dme, unit dose form, per milligram	12	12	$20.00	$0.34
94640 Inhalation treatment for airway obstruction or sputum production	12	12	$52.71	$5.77

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
Q9967 Low osmolar contrast material, 300-399 mg/ml iodine concentration, per ml	1,300	13	$1.50	$0.14
J1100 Injection, dexamethasone sodium phosphate, 1 mg	400	54	$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	146	145	$318.00	$106.47
87635 Amplifed dna or rna probe detection of severe acute respiratory syndrome coronavirus 2 (covid-19) antigen	73	72	$175.00	$50.28
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	$138.70
87502 Detection test by nucleic acid for multiple types influenza virus	62	61	$270.00	$93.88
96372 Injection beneath the skin or into muscle for therapy, diagnosis, or prevention	59	53	$73.71	$11.85
71046 X-ray of chest, 2 views	51	51	$213.18	$28.30
81003 Automated urinalysis test	48	48	$46.80	$2.11
80051 Blood test panel for electrolytes (sodium potassium, chloride, carbon dioxide)	34	33	$14.02	$6.67
82550 Creatine kinase (cardiac enzyme) level, total	34	33	$13.02	$6.00
82565 Blood creatinine level	33	32	$10.24	$4.87
85018 Blood count, hemoglobin	32	32	$7.00	$2.17
84520 Urea nitrogen level to assess kidney function	31	31	$7.90	$3.75
J7030 Infusion, normal saline solution , 1000 cc	29	27	$10.00	$2.37
99213 Established patient office or other outpatient visit, typically 15 minutes	26	26	$182.06	$74.82
84450 Liver enzyme (sgot), level	22	22	$9.39	$5.08
84460 Liver enzyme (sgpt), level	22	22	$10.23	$5.19
84155 Total protein level, blood	22	22	$6.74	$3.60
84075 Phosphatase (enzyme) level, alkaline	22	22	$10.01	$5.08
82247 Bilirubin level	22	22	$9.71	$4.92
82150 Amylase (enzyme) level	22	22	$32.14	$6.35
82040 Albumin (protein) level	22	22	$9.58	$4.85
87880 Detection test by immunoassay with direct visual observation for streptococcus, group a (strep)	16	16	$92.72	$16.20
73630 X-ray of foot, minimum of 3 views	15	15	$193.22	$26.89
90471 Administration of 1 vaccine	13	13	$48.00	$15.55
93000 Routine ekg using at least 12 leads including interpretation and report	13	13	$123.00	$12.12
73562 X-ray of knee, 3 views	12	11	$197.34	$28.41
74177 Ct scan of abdomen and pelvis with contrast	12	12	$1815.42	$208.15
99215 Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more	11	11	$429.90	$150.39
J7644 Ipratropium bromide, inhalation solution, fda-approved final product, non-compounded, administered through dme, unit dose form, per milligram	11	11	$20.00	$0.25
94640 Inhalation treatment for airway obstruction or sputum production	11	11	$52.10	$7.50
90714 Vaccine for tetanus and diphtheria toxoids injection into muscle, patient 7 years or older	11	11	$73.50	$28.77

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
Q9967 Low osmolar contrast material, 300-399 mg/ml iodine concentration, per ml	1,100	11	$1.50	$0.12
J1100 Injection, dexamethasone sodium phosphate, 1 mg	301	49	$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	128	125	$318.00	$107.04
87635 Amplifed dna or rna probe detection of severe acute respiratory syndrome coronavirus 2 (covid-19) antigen	95	92	$175.00	$50.70
96372 Injection beneath the skin or into muscle for therapy, diagnosis, or prevention	53	50	$73.71	$11.82
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	51	51	$490.50	$140.33
87502 Detection test by nucleic acid for multiple types influenza virus	47	47	$270.00	$94.59
71046 X-ray of chest, 2 views	41	41	$213.18	$28.49
99212 Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more	34	33	$111.90	$47.84
87811 Detection test by immunoassay with direct visual observation for severe acute respiratory syndrome coronavirus 2 (covid-19)	31	31	$175.00	$41.31
80051 Blood test panel for electrolytes (sodium potassium, chloride, carbon dioxide)	27	27	$14.02	$6.89
82550 Creatine kinase (cardiac enzyme) level, total	27	27	$13.02	$6.39
99213 Established patient office or other outpatient visit, typically 15 minutes	27	27	$182.06	$74.25
84520 Urea nitrogen level to assess kidney function	27	27	$7.90	$3.88
82565 Blood creatinine level	27	27	$10.24	$5.03
81002 Urinalysis, manual test	24	24	$30.00	$3.44
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more	24	24	$320.82	$94.14
J7030 Infusion, normal saline solution , 1000 cc	23	21	$10.00	$2.61
J1885 Injection, ketorolac tromethamine, per 15 mg	22	12	$10.00	$0.57
82150 Amylase (enzyme) level	18	18	$32.14	$6.38
85018 Blood count, hemoglobin	18	18	$17.66	$2.33
82040 Albumin (protein) level	17	17	$9.58	$4.88
84155 Total protein level, blood	17	17	$6.74	$3.62
84075 Phosphatase (enzyme) level, alkaline	17	17	$10.01	$5.11
84460 Liver enzyme (sgpt), level	17	17	$10.23	$5.22
93000 Routine ekg using at least 12 leads including interpretation and report	17	15	$123.00	$11.81
84450 Liver enzyme (sgot), level	17	17	$9.39	$5.11
82247 Bilirubin level	17	17	$9.71	$4.95
99202 New patient office or other outpatient visit, typically 20 minutes	16	16	$146.26	$61.77
82947 Blood glucose (sugar) level	13	13	$7.86	$3.87
96360 Infusion into a vein for hydration, 31-60 minutes	13	13	$105.00	$28.70
99215 Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more	11	11	$429.90	$151.69

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
Q9967 Low osmolar contrast material, 300-399 mg/ml iodine concentration, per ml	1,350	12	$1.50	$0.12
J1100 Injection, dexamethasone sodium phosphate, 1 mg	128	28	$10.00	$0.14
99213 Established patient office or other outpatient visit, typically 15 minutes	59	59	$182.06	$76.92
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	52	52	$318.00	$108.70
87811 Detection test by immunoassay with direct visual observation for severe acute respiratory syndrome coronavirus 2 (covid-19)	50	50	$133.00	$41.38
87635 Amplifed dna or rna probe detection of severe acute respiratory syndrome coronavirus 2 (covid-19) antigen	48	48	$153.13	$51.31
81002 Urinalysis, manual test	37	37	$30.00	$3.39
85014 Red blood cell concentration measurement	35	34	$56.45	$2.37
80047 Blood test, basic group of blood chemicals (calcium, ionized)	35	34	$66.11	$13.73
85018 Blood count, hemoglobin	35	34	$54.97	$2.37
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	32	32	$490.50	$142.23
71046 X-ray of chest, 2 views	30	29	$213.18	$28.48
96372 Injection beneath the skin or into muscle for therapy, diagnosis, or prevention	29	29	$73.71	$11.96
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more	28	28	$320.82	$95.12
J7030 Infusion, normal saline solution , 1000 cc	27	27	$10.00	$2.79
99202 New patient office or other outpatient visit, typically 20 minutes	21	21	$146.26	$61.60
J1885 Injection, ketorolac tromethamine, per 15 mg	19	11	$10.00	$0.50
99212 Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more	19	19	$111.90	$47.56
82247 Bilirubin level	17	17	$9.71	$5.02
84460 Liver enzyme (sgpt), level	17	17	$10.23	$5.30
84450 Liver enzyme (sgot), level	17	17	$9.39	$5.18
84155 Total protein level, blood	17	17	$6.74	$3.67
84075 Phosphatase (enzyme) level, alkaline	17	17	$10.01	$5.18
82040 Albumin (protein) level	17	17	$9.58	$4.95
82150 Amylase (enzyme) level	17	17	$32.14	$6.48
87502 Detection test by nucleic acid for multiple types influenza virus	15	15	$270.00	$95.80
96365 Infusion into a vein for therapy, prevention, or diagnosis, 1 hour or less	13	13	$201.33	$61.12

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99283 Emergency department visit with low level of medical decision making	39	37	$252.92	$50.20
99285 Emergency department visit for life threatening or functioning severity	13	13	$386.72	$133.44
99284 Emergency department visit with moderate level of medical decision making	12	12	$341.00	$95.21

Medical Specialties & State Licenses

CMS Verified: 2025-09-18

Nurse Practitioner Primary Specialty

NUCC Taxonomy Code: 363L00000X

State License MO 2019033706

(1) A registered nurse provider with a graduate degree in nursing prepared for advanced practice involving independent and interdependent decision making and direct accountability for clinical judgment across the health care continuum or in a certified specialty. (2) A registered nurse who has completed additional training beyond basic nursing education and who provides primary health care services in accordance with state nurse practice laws or statutes. Tasks performed by nurse practitioners vary with practice requirements mandated by geographic, political, economic, and social factors. Nurse practitioner specialists include, but are not limited to, family nurse practitioners, gerontological nurse practitioners, pediatric nurse practitioners, obstetric-gynecologic nurse practitioners, and school nurse practitioners.

Nurse Practitioner - Family

NUCC Taxonomy Code: 363LF0000X

State License MO 2019033706

Definition to come...

Hospital & Practice Group Affiliations

Physician Groups Lc

1520 Wentzville Pkwy, Wentzville, MO 633853408

Phone: 6364974000

Physician Groups Lc

1110 Highlands Plaza Dr E, Saint Louis, MO 631101351

Phone: 3142730195

Physician Groups Lc

2630 Hwy K, O Fallon, MO 633686624

Phone: 6362405454

Total Access Urgent Care Pc

9556 Manchester Rd, Saint Louis, MO 631191313

Phone: 3149612255

Secondary Practice Locations

9556 Manchester Rd

Saint Louis, MO 631191313

Phone: 3143735740

Practice Associates & Co-Workers

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

4 Associated Practitioners

Dr. Amanda Heidemann , MD

Family Medicine

NPI 1043329105

Doctor of Medicine (M.D.)

Tara Barnes-Cherry , APRN, FNP-BC

Nurse Practitioner

NPI 1104424068

Advanced Practice Registered Nurse, Family Nurse Practitioner (Board Certified)

Katherine Clancy , FNP

Nurse Practitioner

NPI 1568724284

Family Nurse Practitioner

Dr. Anjum Razzaque , MD

Emergency Medicine

NPI 1962427229

Doctor of Medicine (M.D.)

Career & Practice History Timeline

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

12 Historical Events

🎓

Medical Taxonomy / Specialty Registered (Primary Specialty) September 18, 2025

Nurse Practitioner (License #2019033706 in MO)

📍

Updated Practice Location April 08, 2025

Registered at 2630 STATE HIGHWAY K, OFALLON, MO 63368 (Tel: 6369805300)

📍

Updated Business Mailing Address April 08, 2025

Registered at PO BOX 959354, SAINT LOUIS, MO 631959354 (Tel: 6369805300)

📍

Updated Practice Location April 03, 2020

Registered at 9556 MANCHESTER RD, SAINT LOUIS, MO 631191313 (Tel: 3143735740)

📍

Updated Business Mailing Address April 03, 2020

Registered at 931 GREEN BRIAR HILLS DR, O FALLON, MO 633665596 (Tel: 3147995172)

🎓

Medical Taxonomy / Specialty Registered (Primary Specialty) April 03, 2020

Nurse Practitioner (License #2019033706 in MO)

✅

NPI Profile Active September 20, 2018

NPI status registered as active in NPPES database

📍

Updated Practice Location September 20, 2018

Registered at 877 JEFFERSON AVE, MEMPHIS, TN 381032807 (Tel: 3147995172)

📍

Updated Business Mailing Address September 20, 2018

Registered at 7 GRAYSTONE PARK CT, SAINT CHARLES, MO 633035140 (Tel: 3147995172)

👤

Provider Name / Credentials Updated September 20, 2018

Recorded as MARY WITHOELTER, NURSE PRACTITIONER

🎓

Medical Taxonomy / Specialty Registered (Primary Specialty) September 20, 2018

Nurse Practitioner (License #24680 in TN)

🟢

Initial NPI Registration & Enumeration September 20, 2018

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: 1982188389

Entity Type:

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

Enumeration Date: September 20, 2018

Last Update: September 18, 2025

Sole Proprietor: No

Update or Correct Profile

Mailing Address

Po Box 959354

Saint Louis, MO 631959354

Phone: 6369805300

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.