Active NPI 1295706448 Individual Practitioner Male Practitioner

Dr. Mark A Vierra , MD

Surgery • Monterey, CA

✓ Accepts Medicare Assignment Telehealth Available

Professional Overview & Biography Verified Profile Summary

Dr. Mark Vierra, MD is a certified Surgery practicing in Monterey, CA. With approximately 41 years of clinical experience since graduating from Harvard Medical School in 1985, Dr. Vierra delivers high-quality medical care to the local community at 2 UPPER RAGSDALE DR.

Dr. Vierra is affiliated with Montage Medical Group and accepts Medicare assignment . Telehealth and virtual consultation options are available for eligible patients.

Frequently performed procedures and clinical services include established patient outpatient office visit, new patient outpatient office visit, 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

2 Upper Ragsdale Dr
B230

Monterey, CA 939405736

Telephone 8316490808

Associated Practice Facility / Clinic

🏢 Community Hospital Of The Monterey Peninsula Facility NPI 1508854423

Medicare Profile & Education

Medical School

Harvard Medical School

Graduation Year

1985

Medicare Assignment

✓ Accepts Assignment

Telehealth Flag

Telehealth Services Available

Specialty Benchmarks & Practice Insights

Comparative analytics for Surgery in Monterey, CA

Senior Veteran Specialist (>20 Yrs)

Practitioner Clinical Experience

41 Yrs +2.5 yrs vs City Avg

City Avg: 38.5 Yrs

State Avg: 27.4 Yrs

Regional Practice Density

15 Specialists

Practicing in Monterey, CA (3346 Statewide)

Telehealth Adoption Rate

20.0% Regional Adoption

✓ Offers Virtual Consultations

Medicare Pricing Discount

51.3% Avg Savings

Under CMS Medicare Fee Schedule vs Standard Submitted Charges

Clinical Seniority & Experience Comparison

Dr. Vierra (41 Years) 41 Yrs

Monterey Specialty Average (38.5 Years) 38.5 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
99213 Established patient office or other outpatient visit, typically 15 minutes	162	106	$150.00	$96.32
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	123	94	$238.00	$130.88
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	88	88	$345.00	$174.59
99231 Follow-up hospital inpatient care per day, typically 15 minutes	70	31	$77.70	$47.78
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more	62	62	$217.69	$118.42
99205 New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more	53	53	$410.75	$228.12
99215 Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more	38	34	$289.00	$191.02
99232 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes	29	19	$143.40	$80.39
99222 Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes	24	23	$273.48	$132.67
47563 Removal of gallbladder with x-ray study of bile ducts using an endoscope	16	16	$1444.94	$616.78
43282 Repair of hernia of muscle at esophagus and stomach with implantation of mesh using an endoscope	16	16	$3620.00	$1697.96
49505 Repair of groin hernia (5 years or older)	14	14	$1186.86	$587.79
99221 Initial hospital inpatient care per day, typically 30 minutes	14	14	$201.02	$81.09
74300 Review by radiologist of bile and/or pancreatic duct image during surgery	13	13	$28.00	$13.38

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99213 Established patient office or other outpatient visit, typically 15 minutes	133	83	$150.00	$95.48
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	121	82	$238.00	$135.83
99231 Follow-up hospital inpatient care per day, typically 15 minutes	88	35	$77.70	$47.92
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	71	71	$345.00	$176.10
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more	49	49	$217.00	$121.26
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	$410.00	$233.39
99232 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes	44	23	$143.40	$83.65
99215 Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more	43	39	$289.00	$193.94
99222 Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes	27	26	$273.48	$137.24
43282 Repair of hernia of muscle at esophagus and stomach with implantation of mesh using an endoscope	16	16	$3676.56	$1765.61
99212 Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more	15	13	$89.00	$54.76
99223 Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes	14	14	$403.06	$171.97
99221 Initial hospital inpatient care per day, typically 30 minutes	11	11	$201.02	$87.05

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	153	95	$257.58	$136.92
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	74	74	$385.34	$179.18
99213 Established patient office or other outpatient visit, typically 15 minutes	70	56	$166.26	$95.13
99231 Follow-up hospital inpatient care per day, typically 15 minutes	48	26	$86.20	$40.33
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	$458.13	$224.00
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more	41	41	$244.53	$119.14
99215 Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more	35	31	$328.46	$190.35
99222 Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes	29	29	$313.56	$141.85
99232 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes	25	14	$170.65	$74.92
99221 Initial hospital inpatient care per day, typically 30 minutes	20	19	$218.61	$104.29
47563 Removal of gallbladder with x-ray study of bile ducts using an endoscope	13	13	$1623.88	$754.76
74300 Review by radiologist of bile and/or pancreatic duct image during surgery	13	13	$36.31	$14.13
49650 Repair of groin hernia using an endoscope	12	12	$1045.69	$420.31
43282 Repair of hernia of muscle at esophagus and stomach with implantation of mesh using an endoscope	11	11	$4121.52	$1792.66

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	110	85	$277.42	$137.85
99213 Established patient office or other outpatient visit, typically 15 minutes	89	69	$189.25	$99.28
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	77	77	$423.55	$181.06
99205 New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more	68	68	$524.00	$235.55
99232 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes	60	24	$179.25	$73.98
99215 Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more	48	43	$370.25	$195.43
99212 Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more	45	40	$114.72	$61.57
99231 Follow-up hospital inpatient care per day, typically 15 minutes	41	20	$97.12	$40.28
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more	37	37	$279.70	$120.98
99222 Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes	32	32	$341.85	$144.89
99442 Telephone medical discussion with physician, 11-20 minutes	24	19	$189.25	$100.30
99221 Initial hospital inpatient care per day, typically 30 minutes	19	18	$251.28	$106.97
47563 Removal of gallbladder with x-ray study of bile ducts using an endoscope	16	16	$1782.10	$633.59
99223 Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes	12	12	$503.82	$213.29
44207 Partial removal of large bowel and reattachment to rectum using an endoscope	11	11	$4546.18	$1921.58

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	129	102	$277.42	$114.02
99213 Established patient office or other outpatient visit, typically 15 minutes	120	93	$189.25	$78.58
99232 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes	92	26	$179.25	$77.88
99205 New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more	72	72	$524.00	$219.12
99442 Telephone medical discussion with physician, 11-20 minutes	65	45	$187.37	$81.58
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	46	46	$423.55	$177.34
99215 Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more	45	42	$370.25	$155.72
99223 Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes	41	41	$503.82	$212.34
99233 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes	31	23	$258.22	$105.55
99231 Follow-up hospital inpatient care per day, typically 15 minutes	30	13	$97.12	$41.92
99222 Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes	28	28	$341.85	$147.11
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more	27	27	$279.70	$113.87
47563 Removal of gallbladder with x-ray study of bile ducts using an endoscope	15	15	$1782.10	$740.82
43282 Repair of hernia of muscle at esophagus and stomach with implantation of mesh using an endoscope	14	14	$4278.82	$1841.29
74300 Review by radiologist of bile and/or pancreatic duct image during surgery	14	14	$66.64	$19.46
G2012 Brief communication technology-based service, e.g. virtual check-in, by a physician or other qualified health care professional who can report evaluation and management services, provided to an established patient, not originating from a related e/m servic	13	13	$37.00	$15.69
49650 Repair of groin hernia using an endoscope	11	11	$1188.68	$480.18

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	208	123	$277.42	$115.29
99213 Established patient office or other outpatient visit, typically 15 minutes	125	80	$189.25	$78.37
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	71	71	$423.55	$170.26
99232 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes	70	25	$179.25	$75.55
99205 New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more	50	50	$524.00	$216.85
99215 Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more	44	42	$370.25	$153.89
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more	37	37	$279.70	$114.33
43282 Repair of hernia of muscle at esophagus and stomach with implantation of mesh using an endoscope	19	19	$4278.82	$1776.71
99221 Initial hospital inpatient care per day, typically 30 minutes	13	13	$251.28	$104.46
99222 Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes	13	13	$341.85	$141.85
99223 Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes	12	12	$503.82	$210.03
49650 Repair of groin hernia using an endoscope	11	11	$1368.11	$547.02
47563 Removal of gallbladder with x-ray study of bile ducts using an endoscope	11	11	$1782.10	$738.38

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	228	146	$278.20	$111.03
99213 Established patient office or other outpatient visit, typically 15 minutes	151	97	$189.25	$74.93
99232 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes	82	24	$179.25	$74.47
99205 New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more	55	55	$524.00	$213.22
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	52	52	$423.55	$170.04
99215 Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more	35	35	$370.25	$150.87
99223 Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes	34	32	$503.82	$207.39
99233 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes	32	14	$258.22	$106.76
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more	25	25	$279.70	$105.18
43282 Repair of hernia of muscle at esophagus and stomach with implantation of mesh using an endoscope	22	22	$4115.45	$1675.11
99221 Initial hospital inpatient care per day, typically 30 minutes	15	14	$251.28	$102.83
44205 Partial removal of small and large bowel with attachment of small and large bowel using an endoscope	11	11	$3337.88	$1355.08

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	270	161	$277.42	$108.82
99213 Established patient office or other outpatient visit, typically 15 minutes	134	89	$189.25	$74.47
99205 New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more	68	68	$524.00	$209.19
99223 Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes	55	54	$503.82	$206.31
99232 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes	54	24	$179.25	$73.62
99233 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes	46	24	$258.22	$106.32
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	43	43	$423.55	$165.15
99215 Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more	40	36	$370.25	$146.41
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more	24	24	$279.70	$111.41
43282 Repair of hernia of muscle at esophagus and stomach with implantation of mesh using an endoscope	16	16	$3604.91	$1471.11
44207 Partial removal of large bowel and reattachment to rectum using an endoscope	14	14	$3811.63	$1469.18
47563 Removal of gallbladder with x-ray study of bile ducts using an endoscope	14	14	$1558.80	$604.92
44205 Partial removal of small and large bowel with attachment of small and large bowel using an endoscope	12	12	$2636.93	$1014.85
74300 Review by radiologist of bile and/or pancreatic duct image during surgery	11	11	$74.00	$18.64
99222 Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes	11	11	$341.85	$139.07

Medical Specialties & State Licenses

Surgery Primary Specialty

NUCC Taxonomy Code: 208600000X

State License CA G59649

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

Montage Medical Group

2 Upper Ragsdale Dr, Monterey, CA 939405736

Phone: 8317189701

Practice Associates & Co-Workers

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

8 Associated Practitioners

Jennifer Keir-Garza

Otolaryngology

NPI 1205915394

Dr. Michael Lurie , MD

Surgery

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Doctor of Medicine (M.D.)

Dr. Emaad Farooqui , MD

Surgery - Vascular Surgery

NPI 1578973467

Doctor of Medicine (M.D.)

Dr. Steve Chang , MD

Surgery

NPI 1639376064

Doctor of Medicine (M.D.)

Dr. Jeffrey Hyde , MD

Surgery

NPI 1801860549

Doctor of Medicine (M.D.)

Dr. William Verlenden , MD

Surgery

NPI 1912979642

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 11, 2010

NPI status registered as active in NPPES database

📍

Updated Practice Location January 11, 2010

Registered at 2 UPPER RAGSDALE DR, B230, MONTEREY, CA 939405736 (Tel: 8316490808)

📍

Updated Business Mailing Address January 11, 2010

Registered at 100 WILSON RD, SUITE 100, MONTEREY, CA 93940 (Tel: 8316491000)

👤

Provider Name / Credentials Updated January 11, 2010

Recorded as MARK VIERRA, MD

🎓

Medical Taxonomy / Specialty Registered (Primary Specialty) January 11, 2010

Surgery (License #G59649 in CA)

🟢

Initial NPI Registration & Enumeration January 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: 1295706448

Entity Type:

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

Enumeration Date: January 27, 2006

Last Update: January 11, 2010

Sole Proprietor: No

Update or Correct Profile

Mailing Address

100 Wilson Rd, Suite 100

Monterey, CA 93940

Phone: 8316491000

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.