JOHN T. DUGAN, III MD – NPI #1154677755
Internal Medicine

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.

Health Care Provider Taxonomy Code for Internal Medicine

JOHN DUGAN, III is a physician located in HOUSTON, TX. NPPES has assigned the NPI number 1154677755 to JOHN DUGAN, III on August 01, 2012. It is a Type-1 NPI, indicating this NPI number is associated with an individual. The primary taxonomy selected by this provider is 207RG0100X from the Health Care Provider Taxonomy code set, which is classified as Internal Medicine, specializing in Gastroenterology

The NPI profile was last updated on Feb 09, 2026. Use the NPI data found here to bill health insurance companies, identify providers enrolled in Medicare and Medicaid services or other HIPAA compliant transactions. See the complete NPI profile for JOHN DUGAN, III below.

NPI Profile for
JOHN T. DUGAN, III

NPI Number
1154677755
Enumeration Date

(about 14 years ago)
Entity Type
Type-1  Individual (Male)
Legal Name
JOHN T. DUGAN, III
Credentials
MD
Primary location
1213 HERMANN DR STE 278
HOUSTON, TX 77004-7009
Phone: (832) 707-5011 Fax:
Mailing address
15555 CREEK BEND DR STE 200
SUGAR LAND, TX 77478-4670
Phone: (832) 707-5011 Fax:
Sole Proprietor
No
Updated
Certification Date
Feb 09, 2026

Note: NPPES allows providers to attest to the accuracy of their NPI data. When a provider request any change to the NPI record, they will be able to attest to their changed NPI data, resulting in an updated certification date.

Taxonomy Code(s)

A taxonomy code is a code that describes the health care service provider's type, classification, and the area of specialization. The primary specialty for this provider is indicated as (Primary) below.

Taxonomy Classification / Specialization State License
207RG0100X
- Internal Medicine / Gastroenterology (Primary)		 TX Q7550

The taxonomy codes are selected by the provider at the time of NPI registration. Selection of a taxonomy code does not replace any credentialing or validation process that the provider requesting the code should complete.

Additional Information

Education
UNIVERSITY OF TEXAS MEDICAL SCHOOL AT HOUSTON - Graduated 2010
Offers Telehealth Services
Yes - Telehealth services allows you to talk to your health care provider using audio/video communications, such as Zoom, without actually going in to the doctor's office
Accepts Medicare
This provider accepts Medicare-approved amount as payment in full. The Medicare-approved amount is the total the provider can be paid. When a provider accepts the Medicare-approved amount as payment, you won't be billed for more than the Medicare deductible & coinsureance.
Medicare Ordering & Referring
Provider can:
  • Refer to Part B
  • Order Durable Medical Equipment
  • Refer to Home Health Agency
  • Order Power Mobility Devices
Affiliations
JOHN DUGAN, III is affiliated with the following medical group(s):
  • HOSPITAL
    • HOUSTON METHODIST HOSPITAL
      6565 FANNIN
      HOUSTON, TX 77030

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