Active NPI 1295990141 Individual Practitioner Male Practitioner

Christopher M Larson

Surgery • Aberdeen, SD

✓ Accepts Medicare Assignment

Professional Overview & Biography Verified Profile Summary

Christopher Larson is a certified Surgery practicing in Aberdeen, SD. With approximately 23 years of clinical experience since graduating from Sanford School Of Medicine Of University Of South Dakota in 2003, Christopher Larson delivers high-quality medical care to the local community at 310 S PENN ST.

Christopher Larson maintains professional affiliations with Avera St Lukes, Avera Mckennan and accepts Medicare assignment.

Frequently performed procedures and clinical services include biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope, established patient outpatient office visit, diagnostic exam of large 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

310 S Penn St
Suite 201

Aberdeen, SD 574014553

Telephone 6052291367

Fax 6052291002

Associated Practice Facility / Clinic

🏢 Aberdeen Surgical Associates Llp Facility NPI 1629057989

Medicare Profile & Education

Medical School

Sanford School Of Medicine Of University Of South Dakota

Graduation Year

2003

Medicare Assignment

✓ Accepts Assignment

Telehealth Flag

In-Person Only

Specialty Benchmarks & Practice Insights

Comparative analytics for Surgery in Aberdeen, SD

Senior Veteran Specialist (>20 Yrs)

Practitioner Clinical Experience

23 Yrs +5.0 yrs vs City Avg

City Avg: 18.0 Yrs

State Avg: 25.8 Yrs

Regional Practice Density

6 Specialists

Practicing in Aberdeen, SD (126 Statewide)

Telehealth Adoption Rate

0.0% Regional Adoption

In-Person Office Visits Only

Medicare Pricing Discount

8.9% Avg Savings

Under CMS Medicare Fee Schedule vs Standard Submitted Charges

Clinical Seniority & Experience Comparison

Dr. Larson (23 Years) 23 Yrs

Aberdeen Specialty Average (18.0 Years) 18.0 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
43239 Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope	199	190	$133.35	$98.40
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	194	161	$125.12	$91.69
45378 Diagnostic exam of large bowel using a flexible endoscope	154	152	$171.92	$165.70
45384 Removal of polyps or growths of large bowel using a flexible endoscope with electrical cautery	100	98	$209.04	$206.01
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	91	91	$160.98	$125.18
99213 Established patient office or other outpatient visit, typically 15 minutes	61	52	$88.07	$62.17
G0121 Colorectal cancer screening; colonoscopy on individual not meeting criteria for high risk	44	44	$172.39	$165.09
43281 Repair of hernia of muscle at esophagus and stomach using an endoscope	29	29	$900.80	$797.45
45380 Biopsy of large bowel using an endoscope	29	29	$187.06	$184.23
47562 Removal of gallbladder using an endoscope	24	24	$605.47	$595.93
43235 Diagnostic exam of esophagus, stomach, and/or upper small bowel using a flexible endoscope	23	22	$110.01	$88.61
43233 Balloon dilation of esophagus, stomach, and/or upper small bowel using an endoscope	18	15	$211.63	$208.35
77001 Fluoroscopic guidance for insertion, replacement or removal of central venous access device	17	17	$16.74	$16.47
36561 Insertion of central venous catheter and implanted device for infusion beneath the skin, patient 5 years or older	17	17	$305.33	$300.44
43450 Dilation of esophagus	16	16	$75.30	$39.49
49505 Repair of groin hernia (5 years or older)	13	13	$497.56	$489.59
99212 Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more	13	13	$55.35	$33.18

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
43239 Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope	165	156	$141.14	$97.53
45378 Diagnostic exam of large bowel using a flexible endoscope	116	116	$172.36	$166.75
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	103	93	$125.36	$93.19
45384 Removal of polyps or growths of large bowel using a flexible endoscope with electrical cautery	96	94	$213.99	$209.53
99213 Established patient office or other outpatient visit, typically 15 minutes	66	58	$89.34	$63.02
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	60	60	$162.32	$126.71
G0121 Colorectal cancer screening; colonoscopy on individual not meeting criteria for high risk	31	31	$174.60	$171.12
43235 Diagnostic exam of esophagus, stomach, and/or upper small bowel using a flexible endoscope	30	28	$106.60	$93.67
45380 Biopsy of large bowel using an endoscope	26	25	$189.93	$187.01
99223 Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes	23	23	$176.36	$165.62
43281 Repair of hernia of muscle at esophagus and stomach using an endoscope	20	20	$818.17	$805.09
49505 Repair of groin hernia (5 years or older)	18	18	$489.91	$482.10
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more	16	16	$109.01	$78.17
99232 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes	15	11	$80.60	$75.48
47562 Removal of gallbladder using an endoscope	13	13	$570.96	$562.00
36561 Insertion of central venous catheter and implanted device for infusion beneath the skin, patient 5 years or older	12	12	$312.17	$307.18
77001 Fluoroscopic guidance for insertion, replacement or removal of central venous access device	12	12	$17.10	$16.83
G0105 Colorectal cancer screening; colonoscopy on individual at high risk	11	11	$174.62	$171.13

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
45378 Diagnostic exam of large bowel using a flexible endoscope	101	100	$163.83	$161.15
99213 Established patient office or other outpatient visit, typically 15 minutes	100	74	$89.79	$64.55
43239 Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope	100	96	$140.64	$100.42
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	77	67	$126.73	$95.47
45384 Removal of polyps or growths of large bowel using a flexible endoscope with electrical cautery	71	70	$218.03	$210.58
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	67	67	$165.97	$130.00
G0121 Colorectal cancer screening; colonoscopy on individual not meeting criteria for high risk	26	26	$170.71	$168.38
45380 Biopsy of large bowel using an endoscope	26	26	$193.53	$191.44
43235 Diagnostic exam of esophagus, stomach, and/or upper small bowel using a flexible endoscope	24	23	$108.42	$95.00
47562 Removal of gallbladder using an endoscope	20	20	$641.21	$616.77
36475 Destruction of insufficient vein of arm or leg, accessed through the skin	19	12	$1130.07	$254.53
36561 Insertion of central venous catheter and implanted device for infusion beneath the skin, patient 5 years or older	14	14	$315.37	$312.83
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more	14	14	$110.01	$79.77

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
43239 Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope	131	123	$133.12	$106.35
45384 Removal of polyps or growths of large bowel using a flexible endoscope with electrical cautery	80	79	$216.46	$211.99
45378 Diagnostic exam of large bowel using a flexible endoscope	76	76	$158.62	$155.09
99213 Established patient office or other outpatient visit, typically 15 minutes	74	61	$90.80	$65.76
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	63	59	$128.95	$97.30
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	37	37	$167.97	$132.24
45380 Biopsy of large bowel using an endoscope	36	36	$194.00	$194.00
G0121 Colorectal cancer screening; colonoscopy on individual not meeting criteria for high risk	33	33	$176.48	$176.48
43235 Diagnostic exam of esophagus, stomach, and/or upper small bowel using a flexible endoscope	22	22	$93.46	$78.35
47562 Removal of gallbladder using an endoscope	18	18	$627.63	$624.16
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more	16	16	$110.33	$81.02
32666 Initial removal of wedge of lung tissue using an endoscope	15	13	$539.12	$539.12
36561 Insertion of central venous catheter and implanted device for infusion beneath the skin, patient 5 years or older	14	13	$319.72	$319.72
77001 Fluoroscopic guidance for insertion, replacement or removal of central venous access device	14	13	$17.93	$17.93
99215 Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more	14	14	$178.40	$143.16
99212 Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more	14	14	$55.77	$35.15
G0105 Colorectal cancer screening; colonoscopy on individual at high risk	13	13	$179.08	$179.08
49505 Repair of groin hernia (5 years or older)	11	11	$473.84	$473.84

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
43239 Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope	97	92	$136.68	$112.16
45378 Diagnostic exam of large bowel using a flexible endoscope	73	72	$180.77	$176.60
99213 Established patient office or other outpatient visit, typically 15 minutes	70	63	$74.24	$51.03
99212 Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more	64	61	$45.00	$25.35
45384 Removal of polyps or growths of large bowel using a flexible endoscope with electrical cautery	52	52	$225.21	$212.37
99202 New patient office or other outpatient visit, typically 20 minutes	36	36	$75.16	$50.05
G0121 Colorectal cancer screening; colonoscopy on individual not meeting criteria for high risk	33	33	$183.50	$181.78
99201 New patient office or other outpatient visit, typically 10 minutes	30	30	$46.56	$26.13
45380 Biopsy of large bowel using an endoscope	19	19	$199.44	$201.27
99212 Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more	18	16	$46.88	$45.30
47562 Removal of gallbladder using an endoscope	18	18	$739.92	$604.56
43235 Diagnostic exam of esophagus, stomach, and/or upper small bowel using a flexible endoscope	17	17	$118.02	$104.45
35301 Removal of blood clot and portion of artery of neck	14	13	$1007.41	$1015.96
G0105 Colorectal cancer screening; colonoscopy on individual at high risk	12	12	$182.61	$183.52
32666 Initial removal of wedge of lung tissue using an endoscope	11	11	$700.92	$704.10

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99212 Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more	161	132	$44.89	$25.03
43239 Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope	148	137	$143.96	$107.79
45378 Diagnostic exam of large bowel using a flexible endoscope	95	92	$192.54	$172.92
45384 Removal of polyps or growths of large bowel using a flexible endoscope with electrical cautery	72	70	$227.09	$216.52
99201 New patient office or other outpatient visit, typically 10 minutes	46	46	$45.39	$26.25
G0121 Colorectal cancer screening; colonoscopy on individual not meeting criteria for high risk	36	36	$184.84	$180.66
99213 Established patient office or other outpatient visit, typically 15 minutes	34	34	$73.78	$50.28
45380 Biopsy of large bowel using an endoscope	24	23	$201.20	$200.92
47562 Removal of gallbladder using an endoscope	22	22	$546.19	$545.43
43235 Diagnostic exam of esophagus, stomach, and/or upper small bowel using a flexible endoscope	16	16	$122.85	$95.85
99212 Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more	16	16	$44.89	$44.83
99231 Follow-up hospital inpatient care per day, typically 15 minutes	15	12	$41.30	$38.63
36475 Destruction of insufficient vein of arm or leg, accessed through the skin	14	14	$1439.41	$268.12
77001 Fluoroscopic guidance for insertion, replacement or removal of central venous access device	11	11	$18.44	$18.41
99202 New patient office or other outpatient visit, typically 20 minutes	11	11	$75.72	$49.71
36561 Insertion of central venous catheter and implanted device for infusion beneath the skin, patient 5 years or older	11	11	$330.32	$314.87

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
43239 Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope	153	147	$219.63	$105.44
99212 Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more	136	110	$43.65	$24.67
45378 Diagnostic exam of large bowel using a flexible endoscope	93	92	$233.71	$170.22
99201 New patient office or other outpatient visit, typically 10 minutes	65	65	$44.10	$25.90
45384 Removal of polyps or growths of large bowel using a flexible endoscope with electrical cautery	61	60	$357.13	$221.62
99213 Established patient office or other outpatient visit, typically 15 minutes	46	41	$72.27	$49.90
G0121 Colorectal cancer screening; colonoscopy on individual not meeting criteria for high risk	44	44	$284.39	$180.77
99231 Follow-up hospital inpatient care per day, typically 15 minutes	28	18	$37.99	$37.38
45380 Biopsy of large bowel using an endoscope	28	28	$273.11	$198.52
99223 Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes	27	27	$197.25	$194.21
47562 Removal of gallbladder using an endoscope	27	27	$594.36	$566.45
99212 Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more	23	20	$46.33	$43.01
43235 Diagnostic exam of esophagus, stomach, and/or upper small bowel using a flexible endoscope	15	14	$174.15	$97.22
49505 Repair of groin hernia (5 years or older)	14	14	$533.96	$525.62
G0105 Colorectal cancer screening; colonoscopy on individual at high risk	12	12	$260.48	$180.90

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
43239 Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope	131	125	$294.95	$104.05
45378 Diagnostic exam of large bowel using a flexible endoscope	103	103	$397.29	$167.25
99231 Follow-up hospital inpatient care per day, typically 15 minutes	98	43	$40.14	$35.98
99213 Established patient office or other outpatient visit, typically 15 minutes	93	77	$72.02	$46.93
99223 Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes	67	66	$205.41	$186.20
99212 Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more	65	62	$44.66	$23.45
45384 Removal of polyps or growths of large bowel using a flexible endoscope with electrical cautery	64	64	$475.72	$212.34
99202 New patient office or other outpatient visit, typically 20 minutes	43	43	$73.42	$46.56
G0121 Colorectal cancer screening; colonoscopy on individual not meeting criteria for high risk	41	41	$377.97	$166.46
99201 New patient office or other outpatient visit, typically 10 minutes	31	31	$45.33	$24.69
47562 Removal of gallbladder using an endoscope	21	21	$578.59	$540.82
43235 Diagnostic exam of esophagus, stomach, and/or upper small bowel using a flexible endoscope	19	19	$283.63	$102.95
45380 Biopsy of large bowel using an endoscope	19	19	$465.45	$183.46
99212 Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more	18	17	$43.27	$40.84
G0105 Colorectal cancer screening; colonoscopy on individual at high risk	17	17	$238.35	$170.33
99201 New patient office or other outpatient visit, typically 10 minutes	14	14	$43.42	$40.83
77001 Fluoroscopic guidance for insertion, replacement or removal of central venous access device	13	13	$18.73	$17.49
36561 Insertion of central venous catheter and implanted device for infusion beneath the skin, patient 5 years or older	13	13	$332.01	$309.96
49505 Repair of groin hernia (5 years or older)	11	11	$483.73	$430.52

Medical Specialties & State Licenses

Surgery Primary Specialty

NUCC Taxonomy Code: 208600000X

State License SD 7279

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.

Additional State Medicaid & Healthcare Payer Identifiers

Medicaid State Provider ID

7302260 (SD)

Hospital & Practice Group Affiliations

Avera St Lukes

111 W 10th Ave, Redfield, SD 574691519

Phone: 6056222573

Avera Mckennan

300 W 5th St, Miller, SD 573621238

Phone: 6058530158

Avera St Lukes

201 S Lloyd St, Aberdeen, SD 574014509

Phone: 6056222545

Avera St Lukes

8 E Us Hwy 12, Groton, SD 574452176

Phone: 6053974242

Avera St Lukes

305 S State St, Aberdeen, SD 574014527

Phone: 6056225100

Practice Associates & Co-Workers

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

2 Associated Practitioners

Dr. Roger Werth , MD

Surgery

NPI 1245216118

Doctor of Medicine (M.D.)

Dr. David Ring , MD

Surgery

NPI 1992017222

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 January 21, 2014

NPI status registered as active in NPPES database

📍

Updated Practice Location January 21, 2014

Registered at 310 S PENN ST, SUITE 201, ABERDEEN, SD 574014553 (Tel: 6052291367)

📍

Updated Business Mailing Address January 21, 2014

Registered at 310 S PENN ST, SUITE 201, ABERDEEN, SD 574014553 (Tel: 6052291367)

👤

Provider Name / Credentials Updated January 21, 2014

Recorded as CHRISTOPHER LARSON

🎓

Medical Taxonomy / Specialty Registered (Primary Specialty) January 21, 2014

Surgery (License #7279 in SD)

🟢

Initial NPI Registration & Enumeration July 21, 2008

First registered as active Individual Practitioner in NPPES Database.

Patient & Community Reviews

Verified patient ratings, medical care experiences, and facility photos

0 Reviews

No patient reviews submitted yet for Christopher Larson. Be the first to share your experience!

Only verified registered users can submit ratings, post feedback, and upload facility photos.

NPI Administrative Meta

NPI Number: 1295990141

Entity Type:

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

Enumeration Date: July 21, 2008

Last Update: January 21, 2014

Sole Proprietor: No

Update or Correct Profile

Mailing Address

310 S Penn St, Suite 201

Aberdeen, SD 574014553

Phone: 6052291367

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.