GUILLERMO A. ORTIZ SAN JUAN MD
NPI 1083098784
Internal Medicine - Gastroenterology in Dublin, OH

Q: What is Guillermo Ortiz San Juan's NPI number?

The NPI number for Guillermo Ortiz San Juan is 1083098784. It was assigned to this individual provider in the NPPES registry on July 13, 2015.

Q: What is Guillermo Ortiz San Juan's specialty?

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

Active since July 13, 2015PECOS EnrolledAccepts Medicare Assignment

95.31/100

CMS Quality Rating

6700 UNIVERSITY BLVD, DUBLIN, OH 43016(614) 293-6255(614) 293-8518 Get Directions Write a Review

NPPES record last updated: April 20, 2026. Verified against the NPPES registry weekly; last sync: August 09, 2026.

Record update history: Apr 20, 2026, Mar 17, 2026, Sep 27, 2021 (3 updates tracked since 2021).

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About Guillermo A. Ortiz San Juan Md NPPES

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

GUILLERMO A. ORTIZ SAN JUAN MD (NPI 1083098784) is an individual gastroenterology provider in Dublin, Ohio, licensed in Ohio (35.142043) and active in the NPI registry since July 2015. He is enrolled in Medicare PECOS, is affiliated with Ohio State University State Health System, and is a graduate of Other (2012).

NPPES Registry Identity

NPI1083098784

Entity TypeIndividualMale

Primary Taxonomy207RG0100X

Provider Legal NameGUILLERMO A. ORTIZ SAN JUANCredential: MD

Location Address6700 UNIVERSITY BLVDDublin, OH 43016-3508

Mailing Address700 Ackerman Rd Ste 2120Columbus, OH 43202-1559 · (614) 293-6255 · Fax (614) 293-8518

Phone(614) 293-6255

Fax(614) 293-8518

Sole ProprietorNo

Medical School CMSOtherGraduated 2012

Enumeration DateJuly 13, 2015

Last NPPES UpdateApril 20, 20263 updates tracked since enumeration

NPPES CertifiedApril 20, 2026

✔ NPI 1083098784 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 OH · 35.142043

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.

6700 UNIVERSITY BLVD, Dublin, OH 43016

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Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Antidote Health Plan of Ohio, Inc., CareSource, Molina Healthcare.Insurance ›

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Guillermo A. Ortiz San Juan 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 ID7618268541

PECOS Enrollment IDI20211006001178

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 8

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.

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.

123 services117 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.

79 services78 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.

57 services56 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.

38 services35 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.

19 services19 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.

12 services12 patients

Hospital Affiliations CMS Care Compare

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

Ohio State University State Health System

Acute Care Hospitals · Columbus, OH

4/5 CMS rating

OwnershipGovernment - State

CMS Certification Number360085

Location410 West 10th AvenueColumbus, OH 43210 · Franklin County

Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 43016 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

$126.12 typical visit price

range $54.34 – $166.65

Typical copayment $31.53 (range $13.58 – $41.66)

Most-billed visit code 99204

Established Patient

$96.44 typical visit price

range $17.10 – $135.40

Typical copayment $24.11 (range $4.27 – $33.85)

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.

95.31/100

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

Scored through an Alternative Payment Model

Quality

76.58

Promoting Interoperability

100

Improvement Activities

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.

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