Active NPI 1487948824 Individual Practitioner Male Practitioner

Dr. John Gary Armstrong , MD

Surgery • Storm Lake, IA

✓ Accepts Medicare Assignment

Professional Overview & Biography Verified Profile Summary

Dr. John Armstrong, MD is a certified Surgery practicing in Storm Lake, IA. With approximately 15 years of clinical experience since graduating from University Of Iowa, Rj & L Carver College Of Medicine in 2011, Dr. Armstrong delivers high-quality medical care to the local community at 210 EAST 5TH ST.

Dr. Armstrong is affiliated with Buena Vista Regional Medical Center and accepts Medicare assignment.

Frequently performed procedures and clinical services include removal of polyps or growths of large bowel using an endoscope with mechanical snare, biopsy of large bowel using an endoscope, biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope. Full Medicare procedure pricing transparency rates and service volume details are listed on this profile.

Practice Location & Contact Primary Location

Practice Address

210 East 5th St

Storm Lake, IA 50588

Telephone 7122134750

Fax 7122135230

Associated Practice Facility / Clinic

🏢 Buena Vista Anesthesia Associates Plc Facility NPI 1184603201

Medicare Profile & Education

Medical School

University Of Iowa, Rj & L Carver College Of Medicine

Graduation Year

2011

Medicare Assignment

✓ Accepts Assignment

Telehealth Flag

In-Person Only

Specialty Benchmarks & Practice Insights

Comparative analytics for Surgery in Storm Lake, IA

Established Specialist (10-20 Yrs)

Practitioner Clinical Experience

15 Yrs -4.5 yrs vs City Avg

City Avg: 19.5 Yrs

State Avg: 26.0 Yrs

Regional Practice Density

2 Specialists

Practicing in Storm Lake, IA (452 Statewide)

Telehealth Adoption Rate

0.0% Regional Adoption

In-Person Office Visits Only

Medicare Pricing Discount

71.8% Avg Savings

Under CMS Medicare Fee Schedule vs Standard Submitted Charges

Clinical Seniority & Experience Comparison

Dr. Armstrong (15 Years) 15 Yrs

Storm Lake Specialty Average (19.5 Years) 19.5 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
45385 Removal of polyps or growths of large bowel using an endoscope with mechanical snare	51	51	$801.53	$227.97
45380 Biopsy of large bowel using an endoscope	40	40	$634.15	$76.45
43239 Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope	30	29	$419.70	$89.19
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	17	16	$276.18	$118.51
99213 Established patient office or other outpatient visit, typically 15 minutes	15	13	$189.13	$83.95
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more	14	14	$279.86	$102.16
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	13	13	$426.62	$153.95

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
45380 Biopsy of large bowel using an endoscope	51	51	$620.88	$106.83
45385 Removal of polyps or growths of large bowel using an endoscope with mechanical snare	49	49	$786.16	$231.00
43239 Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope	37	37	$411.16	$86.82
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	24	23	$269.75	$119.13
99213 Established patient office or other outpatient visit, typically 15 minutes	22	21	$183.91	$83.85
G0121 Colorectal cancer screening; colonoscopy on individual not meeting criteria for high risk	20	20	$919.70	$167.15
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	16	16	$413.38	$154.82
G0105 Colorectal cancer screening; colonoscopy on individual at high risk	13	13	$940.31	$167.00
45378 Diagnostic exam of large bowel using a flexible endoscope	12	12	$569.00	$160.69

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
45385 Removal of polyps or growths of large bowel using an endoscope with mechanical snare	47	47	$770.85	$236.93
45380 Biopsy of large bowel using an endoscope	45	45	$607.93	$102.77
43239 Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope	36	36	$403.78	$98.77
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	30	30	$404.90	$156.86
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	27	27	$263.44	$120.90
99213 Established patient office or other outpatient visit, typically 15 minutes	20	17	$180.20	$85.39
99222 Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes	14	14	$333.00	$126.66

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
43239 Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope	35	33	$391.77	$95.16
45385 Removal of polyps or growths of large bowel using an endoscope with mechanical snare	32	32	$749.78	$240.13
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	27	27	$396.56	$158.69
45380 Biopsy of large bowel using an endoscope	27	27	$592.33	$112.04
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	22	20	$257.36	$122.87
99213 Established patient office or other outpatient visit, typically 15 minutes	21	20	$174.14	$86.40
G0121 Colorectal cancer screening; colonoscopy on individual not meeting criteria for high risk	16	16	$877.44	$174.73
45378 Diagnostic exam of large bowel using a flexible endoscope	15	15	$540.40	$174.58
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more	14	14	$259.43	$105.84
43235 Diagnostic exam of esophagus, stomach, and/or upper small bowel using a flexible endoscope	12	12	$344.75	$77.04

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99213 Established patient office or other outpatient visit, typically 15 minutes	39	30	$169.15	$70.38
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	32	28	$248.50	$101.00
45380 Biopsy of large bowel using an endoscope	30	29	$576.77	$104.53
45385 Removal of polyps or growths of large bowel using an endoscope with mechanical snare	29	29	$731.41	$246.04
43239 Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope	27	26	$381.33	$105.96
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more	23	23	$251.13	$101.08

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99213 Established patient office or other outpatient visit, typically 15 minutes	32	25	$167.00	$67.79
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	30	26	$245.00	$101.77
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more	27	27	$248.00	$100.54
45385 Removal of polyps or growths of large bowel using an endoscope with mechanical snare	21	20	$716.71	$244.37
99222 Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes	17	17	$311.00	$129.38
45380 Biopsy of large bowel using an endoscope	17	17	$566.00	$119.66
G0121 Colorectal cancer screening; colonoscopy on individual not meeting criteria for high risk	16	16	$843.00	$176.15
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	12	12	$377.00	$153.59
43239 Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope	11	11	$376.00	$114.66

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99213 Established patient office or other outpatient visit, typically 15 minutes	24	21	$142.63	$68.18
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more	22	22	$229.36	$97.44
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	22	17	$202.36	$101.02
99222 Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes	16	16	$269.00	$129.34
43235 Diagnostic exam of esophagus, stomach, and/or upper small bowel using a flexible endoscope	13	12	$359.23	$90.69
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	11	11	$355.18	$154.06
99223 Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes	11	11	$394.18	$192.51

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more	12	12	$220.00	$99.72

Medical Specialties & State Licenses

Surgery Primary Specialty

NUCC Taxonomy Code: 208600000X

State License IA 44498

A general surgeon has expertise related to the diagnosis - preoperative, operative and postoperative management - and management of complications of surgical conditions in the following areas: alimentary tract; abdomen; breast, skin and soft tissue; endocrine system; head and neck surgery; pediatric surgery; surgical critical care; surgical oncology; trauma and burns; and vascular surgery. General surgeons increasingly provide care through the use of minimally invasive and endoscopic techniques. Many general surgeons also possess expertise in transplantation surgery, plastic surgery and cardiothoracic surgery.

Hospital & Practice Group Affiliations

Buena Vista Regional Medical Center

1525 W 5th St, Storm Lake, IA 505883027

Phone: 7127324030

Practice Associates & Co-Workers

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

1 Associated Practitioners

Dr. Jason Dierking , MD

Surgery

NPI 1477675940

Doctor of Medicine (M.D.)

Career & Practice History Timeline

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

14 Historical Events

📍

Updated Practice Location March 19, 2018

Registered at 210 EAST 5TH ST, STORM LAKE, IA 50588 (Tel: 7122134750)

📍

Updated Business Mailing Address March 19, 2018

Registered at 1525 W 5TH ST, STORM LAKE, IA 50588 (Tel: 7122134750)

🎓

Medical Taxonomy / Specialty Registered (Primary Specialty) March 19, 2018

Surgery (License #44498 in IA)

✅

NPI Profile Active June 23, 2017

NPI status registered as active in NPPES database

📍

Updated Practice Location June 23, 2017

Registered at 1525 W 5TH ST DEPT OF, STORM LAKE, IA 505883027 (Tel: (712) 732-4030)

📍

Updated Business Mailing Address June 23, 2017

Registered at 1525 WEST 5TH STREET, DEPT OF SURGERY, STORM LAKE, IA 50588 (Tel: (712) 732-4030)

👤

Provider Name / Credentials Updated June 23, 2017

Recorded as JOHN ARMSTRONG, M.D.

🎓

Medical Taxonomy / Specialty Registered (Primary Specialty) June 23, 2017

Surgery (License #R-9142 in IA)

✅

NPI Profile Active June 02, 2011

NPI status registered as active in NPPES database

📍

Updated Practice Location June 02, 2011

Registered at 200 HAWKINS DR, UIHC DEPT OF SURGERY, IOWA CITY, IA 522421007 (Tel: 3194675302)

📍

Updated Business Mailing Address June 02, 2011

Registered at 200 HAWKINS DR, UIHC DEPT OF SURGERY, IOWA CITY, IA 522421007 (Tel: 3194675302)

👤

Provider Name / Credentials Updated June 02, 2011

Recorded as JOHN ARMSTRONG, M.D.

🎓

Medical Taxonomy / Specialty Registered (Primary Specialty) June 02, 2011

Surgery (License #R-9142 in IA)

🟢

Initial NPI Registration & Enumeration June 02, 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: 1487948824

Entity Type:

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

Enumeration Date: June 02, 2011

Last Update: March 19, 2018

Sole Proprietor: No

Update or Correct Profile

Mailing Address

1525 W 5th St

Storm Lake, IA 50588

Phone: 7122134750

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.