Active NPI 1356348833 Individual Practitioner Male Practitioner

Dr. Gary Hamamoto , MD

Surgery • Owings Mills, MD

Public Directory Information & Medical Disclaimer

This profile is compiled from official public domain records provided by CMS and the NPPES registry. TRUE-MEDINFO is an independent reference directory and does not provide medical advice, diagnosis, or treatment recommendations. Always consult a licensed medical professional for personal health decisions.

Professional Overview & Biography Verified Profile Summary

Dr. Gary Hamamoto, MD is a registered Surgery practitioner in Owings Mills, MD. With approximately 47 years of clinical practice since graduating from R Franklin University Of Med & Sci/Chicago Medical School in 1979, Dr. Hamamoto provides healthcare services at the registered practice location at 23 CROSSROADS DR.

Dr. Hamamoto is affiliated with Sinai Hospital Of Baltimore, Inc and does not directly accept Medicare assignment.

Frequently performed procedures and clinical services include established patient outpatient office visit, new patient outpatient office visit, limited ultrasound scan of abdomen. Full Medicare procedure pricing transparency rates and service volume details are listed on this profile.

Practice Location & Contact Primary Location

Practice Address

23 Crossroads Dr
Suite #240

Owings Mills, MD 211175420

Telephone 4105810700

Fax 4105810705

Associated Practice Facility / Clinic

🏢 Brull & Honig Mdpa Facility NPI 1174579320

Medicare Profile & Education

Medical School

R Franklin University Of Med & Sci/chicago Medical School

Graduation Year

1979

Medicare Assignment

Not Specified

Telehealth Flag

In-Person Only

Specialty Benchmarks & Practice Insights

Comparative analytics for Surgery in Owings Mills, MD

Senior Veteran Specialist (>20 Yrs)

Practitioner Clinical Experience

47 Yrs +12.6 yrs vs City Avg

City Avg: 34.4 Yrs

State Avg: 28.6 Yrs

Regional Practice Density

8 Specialists

Practicing in Owings Mills, MD (717 Statewide)

Telehealth Adoption Rate

25.0% Regional Adoption

In-Person Office Visits Only

Medicare Pricing Discount

73.7% Avg Savings

Under CMS Medicare Fee Schedule vs Standard Submitted Charges

Clinical Seniority & Experience Comparison

Dr. Hamamoto (47 Years) 47 Yrs

Owings Mills Specialty Average (34.4 Years) 34.4 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
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	161	136	$295.00	$132.19
99205 New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more	126	126	$539.61	$228.34
76705 Limited ultrasound scan of abdomen	117	106	$240.00	$91.31
99213 Established patient office or other outpatient visit, typically 15 minutes	102	85	$205.00	$94.05
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	42	42	$442.02	$171.24
45380 Biopsy of large bowel using an endoscope	40	40	$1181.00	$112.17
49650 Repair of groin hernia using an endoscope	40	40	$1513.40	$542.14
45385 Removal of polyps or growths of large bowel using an endoscope with mechanical snare	27	27	$1519.00	$259.81
82270 Stool analysis for blood to screen for colon tumors	26	26	$11.00	$4.29
99215 Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more	25	23	$400.00	$187.86
45378 Diagnostic exam of large bowel using a flexible endoscope	24	24	$1080.00	$169.84
43239 Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope	15	15	$995.00	$44.56
47563 Removal of gallbladder with x-ray study of bile ducts using an endoscope	15	15	$2266.00	$768.65

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	186	150	$295.00	$135.82
99205 New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more	159	159	$539.51	$233.72
76705 Limited ultrasound scan of abdomen	103	95	$240.00	$96.16
99213 Established patient office or other outpatient visit, typically 15 minutes	103	89	$205.00	$96.18
45380 Biopsy of large bowel using an endoscope	48	46	$1181.00	$83.31
45385 Removal of polyps or growths of large bowel using an endoscope with mechanical snare	43	42	$1519.00	$232.15
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	38	38	$441.71	$173.33
99215 Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more	38	34	$400.00	$190.05
82270 Stool analysis for blood to screen for colon tumors	36	36	$11.00	$4.29
49650 Repair of groin hernia using an endoscope	33	33	$1444.12	$503.11
15734 Creation of muscle graft to trunk	29	12	$3915.00	$1150.44
47563 Removal of gallbladder with x-ray study of bile ducts using an endoscope	15	15	$2266.00	$733.33
10061 Complicated or multiple drainage of skin abscess	13	13	$725.00	$230.31
99212 Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more	12	12	$125.00	$60.50
45378 Diagnostic exam of large bowel using a flexible endoscope	11	11	$1080.00	$185.97

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99213 Established patient office or other outpatient visit, typically 15 minutes	221	176	$205.00	$97.84
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	102	89	$295.00	$135.38
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	82	82	$440.12	$179.73
76705 Limited ultrasound scan of abdomen	68	64	$240.00	$97.46
99205 New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more	59	59	$538.42	$239.00
45380 Biopsy of large bowel using an endoscope	39	39	$1181.00	$108.43
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more	38	38	$280.47	$122.31
82270 Stool analysis for blood to screen for colon tumors	35	35	$11.00	$4.32
45385 Removal of polyps or growths of large bowel using an endoscope with mechanical snare	28	28	$1519.00	$267.95
43239 Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope	27	25	$995.00	$71.24
49650 Repair of groin hernia using an endoscope	22	22	$1346.55	$494.21
99212 Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more	19	18	$125.00	$61.79
10061 Complicated or multiple drainage of skin abscess	18	18	$725.00	$236.03
45378 Diagnostic exam of large bowel using a flexible endoscope	18	18	$1080.00	$166.34
99215 Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more	17	17	$400.00	$194.79
99202 New patient office or other outpatient visit, typically 20 minutes	13	13	$176.92	$74.21
49651 Repair of recurrent groin hernia using an endoscope	13	13	$1665.27	$648.31

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99213 Established patient office or other outpatient visit, typically 15 minutes	237	178	$205.00	$99.54
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	78	68	$295.00	$138.94
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	71	71	$440.07	$179.36
76705 Limited ultrasound scan of abdomen	56	49	$240.00	$100.37
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more	49	49	$282.80	$117.70
82270 Stool analysis for blood to screen for colon tumors	43	43	$11.00	$4.10
45380 Biopsy of large bowel using an endoscope	35	35	$1181.00	$115.46
99212 Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more	34	28	$125.00	$61.67
45385 Removal of polyps or growths of large bowel using an endoscope with mechanical snare	27	26	$1519.00	$265.64
43239 Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope	23	23	$995.00	$63.31
10061 Complicated or multiple drainage of skin abscess	23	20	$725.00	$236.69
99202 New patient office or other outpatient visit, typically 20 minutes	22	22	$189.27	$80.36
49650 Repair of groin hernia using an endoscope	21	21	$1472.00	$551.88
99205 New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more	20	20	$525.60	$242.54
45378 Diagnostic exam of large bowel using a flexible endoscope	18	18	$1080.00	$175.65
47562 Removal of gallbladder using an endoscope	14	14	$2105.00	$723.11

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99213 Established patient office or other outpatient visit, typically 15 minutes	251	186	$205.00	$82.06
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	60	60	$439.17	$177.38
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more	44	44	$280.36	$118.21
82270 Stool analysis for blood to screen for colon tumors	36	36	$11.00	$4.23
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	36	34	$295.00	$116.80
76705 Limited ultrasound scan of abdomen	35	33	$240.00	$101.14
45380 Biopsy of large bowel using an endoscope	30	30	$1181.00	$106.65
45385 Removal of polyps or growths of large bowel using an endoscope with mechanical snare	24	24	$1519.00	$255.65
99212 Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more	20	19	$125.00	$50.26
99202 New patient office or other outpatient visit, typically 20 minutes	20	20	$201.70	$83.55
49650 Repair of groin hernia using an endoscope	17	17	$1401.65	$502.81
43239 Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope	14	14	$995.00	$71.43
10061 Complicated or multiple drainage of skin abscess	14	14	$725.00	$233.70
45378 Diagnostic exam of large bowel using a flexible endoscope	12	12	$1062.00	$169.15
47562 Removal of gallbladder using an endoscope	11	11	$2105.00	$733.14

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99213 Established patient office or other outpatient visit, typically 15 minutes	393	284	$205.00	$79.07
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more	70	70	$270.03	$116.02
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	52	50	$295.00	$113.95
99212 Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more	49	45	$125.00	$48.66
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	49	49	$429.63	$177.16
82270 Stool analysis for blood to screen for colon tumors	46	46	$11.00	$4.20
76705 Limited ultrasound scan of abdomen	45	45	$240.00	$95.33
45380 Biopsy of large bowel using an endoscope	44	44	$1181.00	$125.80
45385 Removal of polyps or growths of large bowel using an endoscope with mechanical snare	42	41	$1519.00	$275.39
99202 New patient office or other outpatient visit, typically 20 minutes	34	34	$197.24	$82.67
45378 Diagnostic exam of large bowel using a flexible endoscope	32	31	$1080.00	$200.94
49650 Repair of groin hernia using an endoscope	30	30	$1502.67	$502.27
43239 Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope	16	16	$995.00	$78.74
10061 Complicated or multiple drainage of skin abscess	14	14	$725.00	$226.43
47562 Removal of gallbladder using an endoscope	11	11	$2105.00	$749.89
99201 New patient office or other outpatient visit, typically 10 minutes	11	11	$108.00	$49.83

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99213 Established patient office or other outpatient visit, typically 15 minutes	374	259	$180.23	$76.82
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more	88	88	$259.60	$115.95
99212 Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more	66	62	$113.18	$46.97
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	57	50	$260.79	$112.28
82270 Stool analysis for blood to screen for colon tumors	57	57	$11.00	$4.21
76705 Limited ultrasound scan of abdomen	45	42	$240.00	$100.08
45385 Removal of polyps or growths of large bowel using an endoscope with mechanical snare	33	32	$1519.00	$251.58
45380 Biopsy of large bowel using an endoscope	33	33	$1181.00	$117.54
99202 New patient office or other outpatient visit, typically 20 minutes	30	30	$175.33	$80.55
43239 Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope	29	28	$995.00	$91.21
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	28	28	$395.75	$176.09
45378 Diagnostic exam of large bowel using a flexible endoscope	26	26	$1080.00	$198.14
J3301 Injection, triamcinolone acetonide, not otherwise specified, 10 mg	22	11	$5.62	$1.79
49650 Repair of groin hernia using an endoscope	21	21	$1502.67	$527.51
47562 Removal of gallbladder using an endoscope	16	16	$2105.00	$722.36
46600 Diagnostic examination of the anus using an endoscope	14	12	$305.00	$98.17
99201 New patient office or other outpatient visit, typically 10 minutes	13	13	$106.23	$48.06
10061 Complicated or multiple drainage of skin abscess	13	13	$651.15	$223.47

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99213 Established patient office or other outpatient visit, typically 15 minutes	403	294	$164.79	$75.29
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more	96	96	$228.44	$111.16
82270 Stool analysis for blood to screen for colon tumors	78	78	$11.00	$4.26
99212 Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more	70	65	$95.00	$45.05
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	54	48	$230.00	$110.67
76705 Limited ultrasound scan of abdomen	46	45	$240.00	$96.45
45384 Removal of polyps or growths of large bowel using a flexible endoscope with electrical cautery	44	44	$1600.00	$155.98
99232 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes	35	16	$165.00	$73.55
45385 Removal of polyps or growths of large bowel using an endoscope with mechanical snare	34	33	$1519.00	$256.73
99202 New patient office or other outpatient visit, typically 20 minutes	33	33	$158.00	$77.52
43239 Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope	29	29	$995.00	$96.44
99223 Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes	25	23	$390.00	$197.66
45378 Diagnostic exam of large bowel using a flexible endoscope	23	22	$1080.00	$190.14
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	17	17	$347.47	$168.97
10060 Simple or single drainage of skin abscess	17	17	$321.00	$115.73
49650 Repair of groin hernia using an endoscope	13	13	$1634.77	$590.29
47562 Removal of gallbladder using an endoscope	11	11	$2105.00	$647.32

Medical Specialties & State Licenses

CMS Verified: 2024-08-21

Surgery Primary Specialty

NUCC Taxonomy Code: 208600000X

State License MD D0030516

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

373981300 (MD)

Hospital & Practice Group Affiliations

Sinai Hospital Of Baltimore, Inc

2435 W Belvedere Ave, Baltimore, MD 212155224

Sinai Hospital Of Baltimore, Inc

5401 Old Court Rd, Randallstown, MD 211335103

Phone: 4105215976

Practice Associates & Co-Workers

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

2 Associated Practitioners

Dr. Michael O'laughlin , MD

Surgery

NPI 1003344110

Doctor of Medicine (M.D.)

Dr. Marc Gertner , MD

Surgery

NPI 1144227612

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 July 08, 2007

NPI status registered as active in NPPES database

📍

Updated Practice Location July 08, 2007

Registered at 23 CROSSROADS DR, SUITE #240, OWINGS MILLS, MD 211175420 (Tel: 4105810700)

📍

Updated Business Mailing Address July 08, 2007

Registered at 23 CROSSROADS DR, SUITE #240, OWINGS MILLS, MD 211175420 (Tel: 4105810700)

👤

Provider Name / Credentials Updated July 08, 2007

Recorded as GARY HAMAMOTO, M.D.

🎓

Medical Taxonomy / Specialty Registered (Primary Specialty) July 08, 2007

Surgery (License #D0030516 in MD)

🟢

Initial NPI Registration & Enumeration June 30, 2005

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: 1356348833

Entity Type:

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

Enumeration Date: June 30, 2005

Last Update: August 21, 2024

Sole Proprietor: No

Update or Correct Profile

Mailing Address

23 Crossroads Dr, Suite #240

Owings Mills, MD 211175420

Phone: 4105810700

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.