Active NPI 1689640955 Individual Practitioner Male Practitioner

Dr. Mark K. Potter , MD

Surgery • Saint Helena, CA

Professional Overview & Biography Verified Profile Summary

Dr. Mark Potter, MD is a registered healthcare professional specializing in Surgery in Saint Helena, CA. Practice services are available at 1127 POPE ST under active NPI credentials.

Frequently performed procedures and clinical services include subsequent hospital care with moderate levelof medical decision making, if using time, at least, initial hospital care with moderate level of medical decision making, if using time, at least, follow-up hospital inpatient care per day. Full Medicare procedure pricing transparency rates and service volume details are listed on this profile.

Practice Location & Contact Primary Location

Practice Address

1127 Pope St
Suite 106

Saint Helena, CA 945741280

Telephone 7079671970

Fax 7079671972

Specialty Benchmarks & Practice Insights

Comparative analytics for Surgery in Saint Helena, CA

Active Practitioner

Practitioner Clinical Experience

Active

City Avg: 21.5 Yrs

State Avg: 27.4 Yrs

Regional Practice Density

4 Specialists

Practicing in Saint Helena, CA (3346 Statewide)

Telehealth Adoption Rate

50.0% Regional Adoption

In-Person Office Visits Only

Medicare Pricing Discount

53.6% Avg Savings

Under CMS Medicare Fee Schedule vs Standard Submitted Charges

Performed Procedures & Service Volume

Top Medicare Part B procedures performed by this practitioner

CMS Official Data (2023)

Reporting Year:

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99232 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes	61	33	$147.00	$85.90
99223 Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes	53	51	$408.00	$188.28
99233 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes	21	14	$211.00	$129.17
99231 Follow-up hospital inpatient care per day, typically 15 minutes	20	13	$79.00	$53.32
43239 Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope	17	17	$409.00	$125.20

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
45380 Biopsy of large bowel using an endoscope	85	85	$735.00	$119.84
99215 Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more	80	69	$392.00	$185.51
99223 Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes	66	64	$412.00	$211.23
99232 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes	65	31	$148.00	$75.98
45385 Removal of polyps or growths of large bowel using an endoscope with mechanical snare	62	62	$999.00	$270.35
99205 New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more	58	58	$476.00	$229.45
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	58	58	$360.00	$173.48
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	57	43	$280.00	$133.37
43239 Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope	52	51	$401.00	$96.08
46600 Diagnostic examination of the anus using an endoscope	44	33	$290.00	$132.72
99213 Established patient office or other outpatient visit, typically 15 minutes	43	31	$198.00	$94.58
99231 Follow-up hospital inpatient care per day, typically 15 minutes	23	16	$77.52	$40.78
99212 Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more	16	16	$126.00	$57.78
G0105 Colorectal cancer screening; colonoscopy on individual at high risk	16	16	$377.88	$198.36
36561 Insertion of central venous catheter and implanted device for infusion beneath the skin, patient 5 years or older	15	15	$2085.53	$339.22
77001 Fluoroscopic guidance for insertion, replacement or removal of central venous access device	15	15	$40.00	$19.53
99233 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes	14	14	$214.00	$109.34
49650 Repair of groin hernia using an endoscope	13	13	$1047.54	$489.63
45378 Diagnostic exam of large bowel using a flexible endoscope	13	13	$672.00	$190.88

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
G0500 Moderate sedation services provided by the same physician or other qualified health care professional performing a gastrointestinal endoscopic service that sedation supports, requiring the presence of an independent trained observer to assist in the monito	163	156	$202.00	$5.75
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	91	91	$349.00	$175.11
45380 Biopsy of large bowel using an endoscope	69	69	$719.00	$121.74
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	64	54	$273.00	$134.60
43239 Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope	60	58	$392.00	$94.02
99215 Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more	54	49	$379.00	$189.50
99213 Established patient office or other outpatient visit, typically 15 minutes	50	46	$193.00	$95.89
99223 Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes	49	47	$295.00	$215.43
99232 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes	47	24	$109.00	$77.31
99205 New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more	45	45	$476.00	$231.18
46600 Diagnostic examination of the anus using an endoscope	43	35	$259.00	$131.56
45385 Removal of polyps or growths of large bowel using an endoscope with mechanical snare	41	41	$977.00	$271.08
99212 Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more	34	33	$122.00	$59.26
45378 Diagnostic exam of large bowel using a flexible endoscope	26	25	$658.00	$183.78
99231 Follow-up hospital inpatient care per day, typically 15 minutes	25	16	$77.00	$41.26
G0105 Colorectal cancer screening; colonoscopy on individual at high risk	16	16	$370.00	$201.73
77001 Fluoroscopic guidance for insertion, replacement or removal of central venous access device	15	15	$36.00	$19.82
45384 Removal of polyps or growths of large bowel using a flexible endoscope with electrical cautery	15	15	$931.00	$136.90
36561 Insertion of central venous catheter and implanted device for infusion beneath the skin, patient 5 years or older	13	13	$2061.00	$360.14
45381 Injection beneath lining of large bowel using a flexible endoscope	12	12	$600.00	$15.78
49650 Repair of groin hernia using an endoscope	12	12	$1038.17	$510.68
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more	12	12	$234.00	$117.32
49585 Repair of hernia at navel (5 years or older)	11	11	$891.00	$315.95

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
G0500 Moderate sedation services provided by the same physician or other qualified health care professional performing a gastrointestinal endoscopic service that sedation supports, requiring the presence of an independent trained observer to assist in the monito	125	124	$200.60	$5.97
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	102	102	$378.00	$182.45
99213 Established patient office or other outpatient visit, typically 15 minutes	80	55	$176.00	$84.50
45380 Biopsy of large bowel using an endoscope	68	68	$715.13	$123.90
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	59	55	$254.00	$120.26
99232 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes	47	20	$162.00	$80.00
43239 Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope	43	41	$391.00	$101.95
45385 Removal of polyps or growths of large bowel using an endoscope with mechanical snare	41	41	$977.00	$265.31
46600 Diagnostic examination of the anus using an endoscope	41	35	$259.00	$122.34
99212 Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more	35	24	$109.00	$51.91
99223 Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes	25	21	$452.00	$223.25
99231 Follow-up hospital inpatient care per day, typically 15 minutes	25	12	$88.00	$42.99
45384 Removal of polyps or growths of large bowel using a flexible endoscope with electrical cautery	24	24	$913.63	$127.62
77001 Fluoroscopic guidance for insertion, replacement or removal of central venous access device	19	18	$42.00	$20.38
36561 Insertion of central venous catheter and implanted device for infusion beneath the skin, patient 5 years or older	18	18	$2171.00	$368.57
99215 Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more	17	17	$339.00	$164.41
99205 New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more	16	16	$476.00	$230.81
45381 Injection beneath lining of large bowel using a flexible endoscope	13	13	$600.00	$17.76
45378 Diagnostic exam of large bowel using a flexible endoscope	12	12	$658.00	$189.95
74300 Review by radiologist of bile and/or pancreatic duct image during surgery	12	12	$41.00	$19.93
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more	12	12	$251.00	$121.72

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
G0500 Moderate sedation services provided by the same physician or other qualified health care professional performing a gastrointestinal endoscopic service that sedation supports, requiring the presence of an independent trained observer to assist in the monito	150	146	$202.00	$5.91
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	90	90	$372.00	$180.94
45380 Biopsy of large bowel using an endoscope	66	66	$719.00	$150.00
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	55	45	$250.00	$121.90
43239 Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope	54	53	$391.00	$90.50
99213 Established patient office or other outpatient visit, typically 15 minutes	51	39	$172.00	$85.14
46600 Diagnostic examination of the anus using an endoscope	43	36	$234.00	$115.97
99232 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes	42	24	$160.00	$79.44
99223 Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes	39	39	$443.31	$220.88
45385 Removal of polyps or growths of large bowel using an endoscope with mechanical snare	36	36	$977.00	$279.39
99231 Follow-up hospital inpatient care per day, typically 15 minutes	32	23	$87.00	$42.80
45384 Removal of polyps or growths of large bowel using a flexible endoscope with electrical cautery	25	25	$931.00	$162.70
99215 Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more	21	21	$332.00	$165.22
99212 Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more	19	17	$106.00	$52.59
99205 New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more	16	16	$466.00	$231.60
G0121 Colorectal cancer screening; colonoscopy on individual not meeting criteria for high risk	15	15	$417.00	$199.84
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more	14	14	$248.00	$123.13
45378 Diagnostic exam of large bowel using a flexible endoscope	14	14	$658.00	$184.92
45381 Injection beneath lining of large bowel using a flexible endoscope	14	14	$600.00	$33.06
77001 Fluoroscopic guidance for insertion, replacement or removal of central venous access device	12	12	$41.00	$20.28

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
G0500 Moderate sedation services provided by the same physician or other qualified health care professional performing a gastrointestinal endoscopic service that sedation supports, requiring the presence of an independent trained observer to assist in the monito	134	131	$26.32	$5.67
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	74	74	$115.55	$106.16
43239 Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope	61	57	$337.30	$91.83
99223 Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes	54	52	$419.22	$210.25
99232 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes	48	33	$151.15	$76.56
45380 Biopsy of large bowel using an endoscope	39	39	$533.74	$150.85
45384 Removal of polyps or growths of large bowel using a flexible endoscope with electrical cautery	35	35	$650.66	$147.71
45385 Removal of polyps or growths of large bowel using an endoscope with mechanical snare	31	31	$698.29	$242.37
99231 Follow-up hospital inpatient care per day, typically 15 minutes	30	21	$83.00	$41.01
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	27	27	$367.00	$177.88
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	23	20	$88.43	$82.77
99213 Established patient office or other outpatient visit, typically 15 minutes	19	18	$67.84	$54.00
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more	18	18	$85.72	$71.13
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	18	17	$249.00	$118.10
46600 Diagnostic examination of the anus using an endoscope	18	17	$87.00	$45.20
74300 Review by radiologist of bile and/or pancreatic duct image during surgery	17	17	$39.41	$19.14
99205 New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more	16	16	$145.00	$142.80
47563 Removal of gallbladder with x-ray study of bile ducts using an endoscope	16	16	$1503.50	$703.82
99213 Established patient office or other outpatient visit, typically 15 minutes	14	13	$165.00	$80.28
99212 Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more	13	12	$46.31	$26.76
45378 Diagnostic exam of large bowel using a flexible endoscope	13	13	$499.23	$199.37
99215 Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more	11	11	$118.55	$116.24
49650 Repair of groin hernia using an endoscope	11	11	$961.82	$409.04

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
G0500 Moderate sedation services provided by the same physician or other qualified health care professional performing a gastrointestinal endoscopic service that sedation supports, requiring the presence of an independent trained observer to assist in the monito	156	151	$26.01	$5.82
99232 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes	92	43	$151.01	$77.93
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	72	72	$87.00	$85.37
99223 Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes	59	58	$417.00	$217.74
43239 Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope	57	53	$300.00	$111.44
99231 Follow-up hospital inpatient care per day, typically 15 minutes	53	35	$83.06	$42.14
45380 Biopsy of large bowel using an endoscope	46	45	$430.00	$115.93
46600 Diagnostic examination of the anus using an endoscope	37	32	$87.00	$45.50
99213 Established patient office or other outpatient visit, typically 15 minutes	37	33	$63.86	$55.20
45384 Removal of polyps or growths of large bowel using a flexible endoscope with electrical cautery	36	36	$497.39	$182.59
45385 Removal of polyps or growths of large bowel using an endoscope with mechanical snare	35	35	$545.00	$264.28
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	34	34	$87.00	$84.90
99205 New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more	24	24	$118.00	$115.11
99215 Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more	22	21	$126.95	$111.19
99222 Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes	20	17	$284.00	$146.20
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more	18	18	$66.67	$64.38
46600 Diagnostic examination of the anus using an endoscope	17	14	$219.00	$106.43
99212 Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more	16	15	$48.00	$27.40
77001 Fluoroscopic guidance for insertion, replacement or removal of central venous access device	15	15	$40.00	$20.35
36561 Insertion of central venous catheter and implanted device for infusion beneath the skin, patient 5 years or older	15	15	$2877.00	$367.44
45378 Diagnostic exam of large bowel using a flexible endoscope	14	14	$400.00	$198.05

Medical Specialties & State Licenses

Surgery Primary Specialty

NUCC Taxonomy Code: 208600000X

State License CA G86920

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.

Practice Associates & Co-Workers

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

1 Associated Practitioners

Kathleen Herrera , MSW, LCSW

Social Worker - Clinical

NPI 1790863231

Master of Social Work, Licensed Clinical Social Worker

Career & Practice History Timeline

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

6 Historical Events

✅

NPI Profile Active August 31, 2010

NPI status registered as active in NPPES database

📍

Updated Practice Location August 31, 2010

Registered at 1127 POPE ST, SUITE 106, SAINT HELENA, CA 945741280 (Tel: 7079671970)

📍

Updated Business Mailing Address August 31, 2010

Registered at 1127 POPE ST, SUITE 106, SAINT HELENA, CA 945741280 (Tel: 7079671970)

👤

Provider Name / Credentials Updated August 31, 2010

Recorded as MARK POTTER, MD

🎓

Medical Taxonomy / Specialty Registered (Primary Specialty) August 31, 2010

Surgery (License #G86920 in CA)

🟢

Initial NPI Registration & Enumeration February 27, 2006

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: 1689640955

Entity Type:

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

Enumeration Date: February 27, 2006

Last Update: August 31, 2010

Sole Proprietor: No

Update or Correct Profile

Mailing Address

1127 Pope St, Suite 106

Saint Helena, CA 945741280

Phone: 7079671970

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.