MICHAEL GILLES MD
NPI 1164579025
Internal Medicine - Gastroenterology in Reno, NV

Q: What is Michael Gilles's NPI number?

The NPI number for Michael Gilles is 1164579025. It was assigned to this individual provider in the NPPES registry on January 4, 2007.

Q: What is Michael Gilles's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Gastroenterology, with taxonomy code 207RG0100X.

Q: When was this NPI record last updated?

The NPPES record for Michael Gilles was last updated on July 17, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.

Active since January 04, 2007PECOS EnrolledAccepts Medicare Assignment

91.59/100

CMS Quality Rating

655 SIERRA ROSE DR STE 3A, RENO, NV 89511(775) 829-7600(775) 824-5502 Get Directions Write a Review

NPPES record last updated: July 17, 2026. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: Jul 17, 2026, Mar 28, 2018 (2 updates tracked since 2018).

On this page

About Michael Gilles Md NPPES

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

MICHAEL GILLES MD (NPI 1164579025) is an individual gastroenterology provider in Reno, Nevada, licensed in Nevada (16941) and active in the NPI registry since January 2007. He is enrolled in Medicare PECOS, is affiliated with Renown Regional Medical Center, and is a graduate of University Of Nevada School Of Medicine (2005).

NPPES Registry Identity

NPI1164579025

Entity TypeIndividualMale

Primary Taxonomy207RG0100X

Provider Legal NameMICHAEL GILLESCredential: MD

Location Address655 SIERRA ROSE DR STE 3AReno, NV 89511-2060

Mailing Address655 Sierra Rose Dr Ste 3aReno, NV 89511-2060 · (775) 829-7600 · Fax (775) 824-5502

Phone(775) 829-7600

Fax(775) 824-5502

Sole ProprietorNo

Medical School CMSUniversity Of Nevada School Of MedicineGraduated 2005

Enumeration DateJanuary 4, 2007

Last NPPES UpdateJuly 17, 20262 updates tracked since enumeration

NPPES CertifiedJuly 17, 2026

✔ NPI 1164579025 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal Medicine · GastroenterologyAllopathic & Osteopathic Physicians

Taxonomy Code207RG0100X

License✔ Licensed in NV · 16941

Definition

An internist who specializes in diagnosis and treatment of diseases of the digestive organs including the stomach, bowels, liver and gallbladder. This specialist treats conditions such as abdominal pain, ulcers, diarrhea, cancer and jaundice and performs complex diagnostic and therapeutic procedures using endoscopes to visualize internal organs.

655 SIERRA ROSE DR STE 3A, Reno, NV 89511

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Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Ambetter from Arizona Complete Health, Ambetter Health, Molina Healthcare.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Michael Gilles Md is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID7719155746

PECOS Enrollment IDI20170807001244

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.

Medicare Billing Reassignment

Medicare enrollment records show Michael Gilles reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Digestive Health Associates

Same address

Gastroenterology

655 SIERRA ROSE DR
Reno, NV 89511

Reassigned Medicare billing, Nevada enrollment
50 clinicians in this Medicare group

NPI 1689775595 (775) 829-7600

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Areas of Expertise CMS Part B claims 24

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.

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.

110 services108 patients

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.

98 services79 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.

87 services87 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.

74 services74 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.

71 services63 patients

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 G0500

Moderate sedation is a method where a physician uses medication to help you relax during a gastrointestinal endoscopy. An independent trained observer will be present to monitor your vital signs and ensure your safety throughout the procedure. It's a common and safe practice.

64 services63 patients

Ultrasound exam of esophagus, stomach, and/or upper small bowel using a flexible endoscope 43259

This procedure involves a flexible tube with a camera, called an endoscope, inserted through your mouth to examine your esophagus, stomach, and upper small bowel. An ultrasound device on the endoscope helps get detailed images. It's safe and helps diagnose various conditions.

32 services32 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.

32 services32 patients

Colorectal cancer screening; colonoscopy on individual at high risk G0105

Colorectal cancer screening, specifically a colonoscopy, is a preventive measure for those at high risk. A thin, flexible tube with a camera inspects the colon to spot any abnormal growths. This test helps detect potential issues early, enhancing the effectiveness of treatment.

29 services29 patients

New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more 99203

This service involves an initial office or outpatient visit for a new patient. The healthcare professional will spend 30-44 minutes understanding your health history, current issues, and discussing possible treatment plans. It's a comprehensive evaluation to start your healthcare journey.

27 services27 patients

Ultrasound guided needle aspiration or biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope 43242

This procedure involves using an ultrasound to guide a needle to specific areas in the esophagus, stomach, or upper small bowel. A flexible endoscope is used to reach these areas. The needle collects a small sample for testing.

24 services23 patients

Exam of common bile and/or pancreatic duct using a flexible endoscope 43273

This procedure, known as an ERCP, involves a flexible tube with a camera, called an endoscope, being gently passed down your throat to examine your common bile or pancreatic duct. It helps doctors diagnose and treat conditions affecting these areas.

23 services19 patients

Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes 99232

Follow-up hospital inpatient care involves daily check-ups while you're admitted in the hospital. Typically, a healthcare provider spends about 25 minutes each day reviewing your condition, adjusting treatment if needed, and answering any questions you might have.

21 services14 patients

Review by radiologist of image from tube placement into bile duct using an endoscope 74328

This procedure involves a specialist, called a radiologist, examining an image taken during a tube placement into your bile duct. The tube is inserted with the help of a tool called an endoscope. This allows the doctor to check for any issues or abnormalities in your bile duct.

20 services17 patients

Insertion of guide wire with dilation of esophagus using a flexible endoscope 43248

This is a procedure where a thin tube, called an endoscope, is gently passed through your mouth into your esophagus. A guide wire is then inserted to help widen any narrow areas. This helps improve swallowing and reduce discomfort.

19 services18 patients

Balloon dilation of esophagus, stomach, and/or upper small bowel using a flexible endoscope, less than 3.0 cm 43249

This procedure involves using a flexible tube with a camera, called an endoscope, to gently expand narrowed areas in your esophagus, stomach, or upper small bowel. A small balloon is inflated, making it easier for food and liquid to pass through. It's safe and effective.

19 services13 patients

Diagnostic exam of esophagus, stomach, and/or upper small bowel using a flexible endoscope 43235

This procedure, known as an upper endoscopy, involves inserting a thin, flexible tube with a camera down the throat to examine the esophagus, stomach, and upper small bowel. It helps diagnose conditions like ulcers or inflammation.

17 services17 patients

Dilation of esophagus 43450

Dilation of the esophagus is a procedure aimed to stretch or open up your esophagus (the tube connecting your mouth to your stomach) when it's narrow. It helps to improve swallowing and alleviate discomfort. It's typically performed using a flexible tube or balloon, under sedation.

16 services16 patients

Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes 99222

Initial hospital inpatient care is a service where a healthcare provider spends about 50 minutes per day overseeing your care while you're admitted in the hospital. This includes reviewing your health status, planning your treatment, and ensuring your safety and comfort.

15 services15 patients

Subsequent hospital care with straightforward or low level of medical decision making, per day, if using time, at least 25 minutes 99231

Follow-up hospital inpatient care is a daily service where a healthcare professional checks on your health progress during your hospital stay. Each session typically lasts 15 minutes, involving updates on your condition and adjustments to your treatment plan, if necessary.

14 services12 patients

Colorectal cancer screening; colonoscopy on individual not meeting criteria for high risk G0121

Colorectal cancer screening, such as a colonoscopy, is a preventive measure to detect early signs of cancer in the large intestine. For individuals not at high risk, it's typically recommended at age 50. A small, flexible tube with a camera is used to examine your colon. It's a safe, effective way to catch issues early.

14 services13 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.

13 services12 patients

Removal of external hemorrhoids by rubber banding 46221

Rubber band ligation is a procedure used to treat external hemorrhoids. A doctor places small rubber bands around the base of the hemorrhoids. This cuts off blood supply, causing them to shrink and fall off, typically within a week.

13 services12 patients

Banding of hemorrhoids using a flexible endoscope (colonoscope) 45398

Banding of hemorrhoids using a colonoscope is a procedure to treat swollen blood vessels in your lower digestive tract. A flexible tube with a light and camera, called a colonoscope, helps locate the hemorrhoids. Then, tiny rubber bands are placed around them, cutting off their blood supply. This causes them to shrink and fall off.

12 services12 patients

Hospital Affiliations CMS Care Compare 5

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

Renown Regional Medical Center

Acute Care Hospitals · Reno, NV

2/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number290001

Location1155 Mill StreetReno, NV 89502 · Washoe County

Emergency services Birthing friendly

Saint Mary's Regional Medical Center

Acute Care Hospitals · Reno, NV

3/5 CMS rating

OwnershipProprietary

CMS Certification Number290009

Location235 W 6th StReno, NV 89503 · Washoe County

Emergency services

Northern Nevada Medical Center

Acute Care Hospitals · Sparks, NV

3/5 CMS rating

OwnershipProprietary

CMS Certification Number290032

Location2375 E Prater WaySparks, NV 89434 · Washoe County

Emergency services

Renown South Meadows Medical Center

Acute Care Hospitals · Reno, NV

3/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number290049

Location10101 Double R BlvdReno, NV 89521 · Washoe County

Emergency services

Carson Valley Health

Critical Access Hospitals · Gardnerville, NV

4/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number291306

Location1107 Highway 395Gardnerville, NV 89410 · Douglas County

Emergency services

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 89511 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

$131.25 typical visit price

range $57.07 – $173.24

Typical copayment $32.81 (range $14.26 – $43.31)

Most-billed visit code 99204

Established Patient

$100.60 typical visit price

range $18.27 – $140.96

Typical copayment $25.15 (range $4.56 – $35.24)

Most-billed visit code 99214

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.

91.59/100

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

Scored through an Alternative Payment Model

Quality

85.05

Promoting Interoperability

96.88

Improvement Activities

Referred Medical Equipment & Supplies CMS DME claims

Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.

Enteral formula, nutritionally complete, calorically dense (equal to or greater than 1.5 kcal/ml) with intact nutrients, includes proteins, fats, carbohydrates, vitamins and minerals, may include fiber, administered through an enteral feeding tube, 100 calories = 1 unit B4152

Other-Enteral and Parenteral · category OB006N

1 supplier11 claims4,168 services$0.32 avg. paid by Medicare

Dollar amounts are the average Medicare paid the supplier per service. They are not the cost to the patient.

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 Michael Gilles's NPI number?

The NPI number for Michael Gilles is 1164579025. It was assigned to this individual provider in the NPPES registry on January 4, 2007.

Where is Michael Gilles located?

Michael Gilles practices at 655 Sierra Rose Dr Ste 3A, Reno, NV 89511. The listed phone number is (775) 829-7600.

What is Michael Gilles's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Gastroenterology, with taxonomy code 207RG0100X.

Is Michael Gilles enrolled in Medicare?

Yes. Michael Gilles is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

Which organization bills Medicare for Michael Gilles's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Michael Gilles reassigns Medicare benefits to Digestive Health Associates (Reno, NV). The reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Michael Gilles's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Michael Gilles accept?

Health plans from Ambetter Health, Ambetter from Arizona Complete Health and Molina Healthcare list Michael Gilles as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

Is Michael Gilles affiliated with any hospitals?

According to CMS data, Michael Gilles is affiliated with Renown Regional Medical Center, Saint Mary's Regional Medical Center, Northern Nevada Medical Center, Renown South Meadows Medical Center and Carson Valley Health.

When was this NPI record last updated?

The NPPES record for Michael Gilles was last updated on July 17, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.