DR. GARY HAMAMOTO M.D.
NPI 1356348833
Surgery in Owings Mills, MD

Q: What is Gary Hamamoto's NPI number?

The NPI number for Gary Hamamoto is 1356348833. It was assigned to this individual provider in the NPPES registry on June 30, 2005.

Q: What is Gary Hamamoto's specialty?

The primary specialty registered for this NPI is Surgery with taxonomy code 208600000X.

Q: When was this NPI record last updated?

The NPPES record for Gary Hamamoto was last updated on August 21, 2024. NPI Profile syncs with the weekly NPPES data releases published by CMS.

Active since June 30, 2005PECOS Enrolled

76.58/100

CMS Quality Rating

23 CROSSROADS DR, SUITE #240, OWINGS MILLS, MD 21117(410) 581-0700(410) 581-0705 Get Directions Write a Review

NPPES record last updated: August 21, 2024. Verified against the NPPES registry weekly; last sync: July 19, 2026.

On this page

About Dr. Gary Hamamoto M.d. NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

DR. GARY HAMAMOTO M.D. (NPI 1356348833) is an individual surgery provider in Owings Mills, Maryland, licensed in Maryland (D0030516) and active in the NPI registry since June 2005. He is enrolled in Medicare PECOS, is affiliated with Northwest Hospital Center, and is a graduate of R Franklin University Of Med & Sci/chicago Medical School (1979).

NPPES Registry Identity

NPI1356348833

Entity TypeIndividualMale

Primary Taxonomy208600000X

Provider Legal NameDR. GARY HAMAMOTOCredential: M.D.

Location Address23 CROSSROADS DR, SUITE #240Owings Mills, MD 21117-5420

Mailing Address23 Crossroads Dr, Suite #240Owings Mills, MD 21117-5420 · (410) 581-0700 · Fax (410) 469-5690

Phone(410) 581-0700

Fax(410) 581-0705

Sole ProprietorNo

Medical School CMSR Franklin University Of Med & Sci/chicago Medical SchoolGraduated 1979

Enumeration DateJune 30, 2005

Last NPPES UpdateAugust 21, 2024

NPPES CertifiedAugust 21, 2024

✔ NPI 1356348833 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtySurgeryAllopathic & Osteopathic Physicians

Taxonomy Code208600000X

License✔ Licensed in MD · D0030516

Definition

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.

23 CROSSROADS DR, Owings Mills, MD 21117

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Other Identifiers 1

Medicaid373981300MD

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Dr. Gary Hamamoto M.d. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

PECOS PAC ID9537139811

PECOS Enrollment IDI20060131000873

Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Areas of Expertise CMS Part B claims 13

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more 99214

This is a routine check-up for patients who have previously visited our clinic. It involves a comprehensive review of your health and any ongoing treatments. The consultation lasts between 30-39 minutes, allowing enough time to discuss any concerns.

161 services136 patients

New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more 99205

This is a first-time patient visit where a healthcare professional spends 60-74 minutes with you. It involves a comprehensive evaluation, including your medical history and current health condition. They'll also advise on preventive health measures and formulate a treatment plan if needed.

126 services126 patients

Limited ultrasound scan of abdomen 76705

A limited ultrasound scan of the abdomen is a non-invasive imaging test. It uses sound waves to produce images of the abdominal organs such as the liver, gallbladder, spleen, pancreas, and kidneys. This helps to identify any abnormalities or issues.

117 services106 patients

Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more 99213

This is a routine visit for patients who have already been seen by the healthcare provider. During this approximately 20-29 minute appointment, your health status will be evaluated and any necessary treatments or tests will be discussed. It's a chance to address any health concerns you may have.

102 services85 patients

New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more 99204

This is a first-time office or outpatient visit lasting between 45-59 minutes. The healthcare provider evaluates your health, discusses your medical history, and may suggest further tests or treatments. It's an opportunity to ask questions and understand your health better.

42 services42 patients

Biopsy of large bowel using a flexible endoscope 45380

A biopsy of the large bowel using a flexible endoscope is a procedure where a thin, flexible tube with a camera is inserted through the rectum to examine the bowel. If abnormal tissue is found, a small sample is taken for further examination. This helps in diagnosing conditions like inflammation, polyps, or cancer.

40 services40 patients

Repair of groin hernia using an endoscope 49650

This procedure involves the use of an endoscope, a thin tube with a camera, to repair a hernia in the groin area. The surgeon makes small incisions, inserts the endoscope, and uses special tools to fix the hernia. This minimally invasive technique often results in quicker recovery times.

40 services40 patients

Removal of polyps or growths of large bowel using an endoscope with mechanical snare 45385

This procedure involves using a thin, flexible tube called an endoscope to examine the large bowel. If any abnormal growths or polyps are found, a tool called a mechanical snare is used to remove them. This is a common method to prevent potential health issues.

27 services27 patients

Stool analysis for blood to screen for colon tumors 82270

A stool analysis for blood is a non-invasive procedure used to check for the presence of hidden blood in your stool. This can be an early sign of colon tumors. The test involves collecting a small sample of stool at home and sending it to a lab for analysis.

26 services26 patients

Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more 99215

This service involves a follow-up appointment for existing patients, lasting between 40 to 54 minutes. During this time, your healthcare provider will assess your current health status, discuss any changes or concerns, review your treatment plan, and answer any questions you may have.

25 services23 patients

Diagnostic exam of large bowel using a flexible endoscope 45378

This procedure, known as a colonoscopy, involves using a flexible tube with a light and camera to examine the large intestine. It helps detect any abnormalities such as polyps or inflammation. It's a standard procedure to ensure gut health.

24 services24 patients

Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope 43239

This procedure involves using a thin, flexible tube with a light and camera, known as an endoscope, to examine the esophagus, stomach, and upper part of the small intestine. Small tissue samples are taken for further examination to help diagnose various conditions.

15 services15 patients

Removal of gallbladder with x-ray study of bile ducts using an endoscope 47563

This procedure, known as an endoscopic retrograde cholangiopancreatography (ERCP), involves using a flexible camera (endoscope) to examine your bile ducts. If gallstones are found, your gallbladder may be removed in a separate procedure. This helps prevent future complications.

15 services15 patients

Hospital Affiliations CMS Care Compare

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

Northwest Hospital Center

Acute Care Hospitals · Randallstown, MD

2/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number210040

Location5401 Old Court RoadRandallstown, MD 21133 · Baltimore County

Emergency services

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 21117 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient

$94.08 typical visit price

range $60.73 – $183.44

Typical copayment $23.52 (range $15.18 – $45.86)

Most-billed visit code 99203

Established Patient

$75.47 typical visit price

range $19.60 – $149.17

Typical copayment $18.86 (range $4.90 – $37.29)

Most-billed visit code 99213

Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Medicare Quality Performance CMS QPP · MIPS

Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.

76.58/100

MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program

Scored as part of a group practice

Quality

64.56

Promoting Interoperability

100

Improvement Activities

Cost

48.54

Other Providers at the Same Location NPPES 20

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

DR. MARC HOWARD GERTNER M.D.

Surgery

23 CROSSROADS DR, SUITE #240
OWINGS MILLS, MD 21117

Baltimore County (410) 581-0700

DR. RALPH BENJAMIN EPSTEIN M.D.

Specialist

23 CROSSROADS DR, SUITE 215
OWINGS MILLS, MD 21117

Baltimore County (410) 363-9400

DR. MARGERY KATES MD

Obstetrics & Gynecology

23 CROSSROADS DR, SUITE 220
OWINGS MILLS, MD 21117

Baltimore County (410) 581-9200

DR. DANIEL JERALD MINKIN MD

Obstetrics & Gynecology

23 CROSSROADS DR, 220
OWINGS MILLS, MD 21117

Baltimore County (410) 581-9200

DR. SALLY ELIZABETH SONDERGAARD MD

Obstetrics & Gynecology

23 CROSSROADS DR, SUITE 220
OWINGS MILLS, MD 21117

Baltimore County (410) 581-9200

DR. JENNIE FABER MD

Obstetrics & Gynecology

23 CROSSROADS DR, SUITE 220
OWINGS MILLS, MD 21117

Baltimore County (410) 581-9200

DRS GABBAY FELDMAN & PEARLMAN PA

Specialist

23 CROSSROADS DR, SUITE 220
OWINGS MILLS, MD 21117

Baltimore County (410) 581-9200

MARK A MASHBURN M.D.

Otolaryngology

23 CROSSROADS DR, SUITE 400
OWINGS MILLS, MD 21117

Baltimore County (410) 356-2626

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Gary Hamamoto's NPI number?

The NPI number for Gary Hamamoto is 1356348833. It was assigned to this individual provider in the NPPES registry on June 30, 2005.

Where is Gary Hamamoto located?

Gary Hamamoto practices at 23 Crossroads Dr Suite #240, Owings Mills, MD 21117. The listed phone number is (410) 581-0700.

What is Gary Hamamoto's specialty?

The primary specialty registered for this NPI is Surgery with taxonomy code 208600000X.

Is Gary Hamamoto enrolled in Medicare?

Yes. Gary Hamamoto is registered in the Medicare PECOS enrollment system.

Is Gary Hamamoto affiliated with any hospitals?

According to CMS data, Gary Hamamoto is affiliated with Northwest Hospital Center.

When was this NPI record last updated?

The NPPES record for Gary Hamamoto was last updated on August 21, 2024. NPI Profile syncs with the weekly NPPES data releases published by CMS.