Active NPI 1104975689 Individual Practitioner Male Practitioner

Dr. Ronald T Kobayashi , MD

Surgery • Tamuning, GU

✓ Accepts Medicare Assignment

Professional Overview & Biography Verified Profile Summary

Dr. Ronald Kobayashi, MD is a certified Surgery practicing in Tamuning, GU. With approximately 46 years of clinical experience since completing medical education in 1980, Dr. Kobayashi delivers high-quality medical care to the local community at 590 SOUTH MARINE CORPS DRIVE.

Dr. Kobayashi accepts Medicare assignment.

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

590 South Marine Corps Drive
Gitc Biulding Ste 211

Tamuning, GU 96913

Telephone 6716497588

Fax 6716461088

Associated Practice Facility / Clinic

🏢 Ronald T. Kobayashi & Associates, Pc Facility NPI 1407098999

Medicare Profile & Education

Medical School

Other

Graduation Year

1980

Medicare Assignment

✓ Accepts Assignment

Telehealth Flag

In-Person Only

Specialty Benchmarks & Practice Insights

Comparative analytics for Surgery in Tamuning, GU

Senior Veteran Specialist (>20 Yrs)

Practitioner Clinical Experience

46 Yrs +11.9 yrs vs City Avg

City Avg: 34.1 Yrs

State Avg: 34.1 Yrs

Regional Practice Density

8 Specialists

Practicing in Tamuning, GU (12 Statewide)

Telehealth Adoption Rate

0.0% Regional Adoption

In-Person Office Visits Only

Medicare Pricing Discount

29.8% Avg Savings

Under CMS Medicare Fee Schedule vs Standard Submitted Charges

Clinical Seniority & Experience Comparison

Dr. Kobayashi (46 Years) 46 Yrs

Tamuning Specialty Average (34.1 Years) 34.1 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	62	49	$94.44	$93.01
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	46	46	$172.87	$169.01
43239 Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope	20	20	$164.10	$82.73
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	19	17	$143.36	$132.49
G0105 Colorectal cancer screening; colonoscopy on individual at high risk	15	15	$372.32	$173.78
45378 Diagnostic exam of large bowel using a flexible endoscope	15	15	$221.22	$169.04

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99213 Established patient office or other outpatient visit, typically 15 minutes	82	56	$96.06	$94.49
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	79	79	$175.84	$172.84
43239 Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope	49	48	$140.90	$83.64
45378 Diagnostic exam of large bowel using a flexible endoscope	30	30	$187.17	$172.13
G0105 Colorectal cancer screening; colonoscopy on individual at high risk	25	25	$187.17	$183.43
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	21	20	$143.36	$133.27
45388 Destruction of polyp or growth of large bowel using a flexible endoscope	13	13	$273.64	$269.26
45385 Removal of polyps or growths of large bowel using an endoscope with mechanical snare	12	12	$257.33	$176.47
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more	11	11	$118.53	$117.23

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99213 Established patient office or other outpatient visit, typically 15 minutes	92	68	$97.37	$95.82
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	81	81	$180.53	$174.52
99233 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes	59	29	$112.82	$104.73
43239 Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope	56	55	$151.61	$77.37
99223 Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes	49	47	$207.88	$202.69
G0105 Colorectal cancer screening; colonoscopy on individual at high risk	19	19	$192.11	$180.23
45378 Diagnostic exam of large bowel using a flexible endoscope	19	19	$192.11	$185.84
45385 Removal of polyps or growths of large bowel using an endoscope with mechanical snare	16	16	$339.52	$189.14
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	15	14	$143.32	$136.18
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more	13	13	$144.03	$118.87
45388 Destruction of polyp or growth of large bowel using a flexible endoscope	12	12	$280.70	$265.45

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99213 Established patient office or other outpatient visit, typically 15 minutes	95	67	$97.39	$94.80
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	90	90	$179.74	$177.30
99233 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes	61	26	$110.38	$106.49
43239 Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope	56	51	$152.09	$81.17
99223 Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes	42	42	$211.45	$202.19
45378 Diagnostic exam of large bowel using a flexible endoscope	30	29	$212.89	$170.21
G0105 Colorectal cancer screening; colonoscopy on individual at high risk	23	23	$419.38	$172.49
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	22	22	$137.77	$137.77
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more	14	14	$119.82	$119.82
99202 New patient office or other outpatient visit, typically 20 minutes	11	11	$82.90	$74.79

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99213 Established patient office or other outpatient visit, typically 15 minutes	79	58	$80.36	$78.91
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	59	59	$177.13	$171.62
43239 Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope	44	44	$201.33	$90.31
99233 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes	33	15	$141.23	$107.61
99223 Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes	30	28	$308.23	$205.09
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more	19	19	$115.61	$114.88
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	18	16	$116.76	$116.21
45378 Diagnostic exam of large bowel using a flexible endoscope	12	11	$224.70	$184.24
G0105 Colorectal cancer screening; colonoscopy on individual at high risk	11	11	$386.30	$186.27
45385 Removal of polyps or growths of large bowel using an endoscope with mechanical snare	11	11	$334.88	$233.37

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99213 Established patient office or other outpatient visit, typically 15 minutes	86	54	$79.91	$76.12
99233 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes	46	22	$150.00	$102.77
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	45	45	$174.50	$166.93
43239 Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope	44	43	$428.06	$81.62
99223 Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes	33	30	$350.00	$198.52
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more	21	21	$115.86	$110.63
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	14	14	$162.00	$111.89
G0105 Colorectal cancer screening; colonoscopy on individual at high risk	12	12	$419.38	$185.68

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99213 Established patient office or other outpatient visit, typically 15 minutes	111	73	$79.40	$73.05
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	78	78	$175.24	$163.29
99233 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes	68	24	$116.51	$100.75
99223 Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes	48	46	$215.86	$187.37
43239 Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope	44	43	$405.83	$92.68
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more	26	26	$121.55	$107.91
G0105 Colorectal cancer screening; colonoscopy on individual at high risk	24	24	$410.19	$178.98
45378 Diagnostic exam of large bowel using a flexible endoscope	20	20	$393.80	$170.39
99202 New patient office or other outpatient visit, typically 20 minutes	14	14	$81.72	$75.90
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	13	12	$133.05	$107.74

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99213 Established patient office or other outpatient visit, typically 15 minutes	73	53	$78.66	$74.66
43239 Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope	50	48	$310.12	$86.70
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	47	47	$177.30	$165.83
99233 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes	34	13	$108.15	$103.02
99223 Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes	34	30	$217.52	$198.71
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more	33	33	$115.68	$110.00
G0105 Colorectal cancer screening; colonoscopy on individual at high risk	30	30	$338.23	$173.94
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	17	17	$115.23	$109.94
45378 Diagnostic exam of large bowel using a flexible endoscope	11	11	$339.18	$179.85

Medical Specialties & State Licenses

Surgery Primary Specialty

NUCC Taxonomy Code: 208600000X

State License GU M001025

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.

Surgery - Vascular Surgery

NUCC Taxonomy Code: 2086S0129X

State License GU M001025

A surgeon with expertise in the management of surgical disorders of the blood vessels, excluding the intracranial vessels or the heart.

Career & Practice History Timeline

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

6 Historical Events

✅

NPI Profile Active February 18, 2014

NPI status registered as active in NPPES database

📍

Updated Practice Location February 18, 2014

Registered at 590 SOUTH MARINE CORPS DRIVE, GITC BIULDING STE 211, TAMUNING, GU 96913 (Tel: 6716497588)

📍

Updated Business Mailing Address February 18, 2014

Registered at 590 SOUTH MARINE CORPS DRIVE, GITC BIULDING STE 211, TAMUNING, GU 96913 (Tel: 6716497588)

👤

Provider Name / Credentials Updated February 18, 2014

Recorded as RONALD KOBAYASHI, MD

🎓

Medical Taxonomy / Specialty Registered (Primary Specialty) February 18, 2014

Surgery (License #M001025 in GU)

🟢

Initial NPI Registration & Enumeration January 10, 2007

First registered as active Individual Practitioner in NPPES Database.

Patient & Community Reviews

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NPI Administrative Meta

NPI Number: 1104975689

Entity Type:

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

Enumeration Date: January 10, 2007

Last Update: February 18, 2014

Sole Proprietor: No

Update or Correct Profile

Mailing Address

590 South Marine Corps Drive, Gitc Biulding Ste 211

Tamuning, GU 96913

Phone: 6716497588

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.