DR. JOHN WALKER MCDONALD M.D. NPI 1386834281

NPI Information

  • NPI: 1386834281
  • Provider Name: DR. JOHN WALKER MCDONALD, M.D.
  • Classification: Internal Medicine - 207RG0100X
  • Specialization: Gastroenterology
  • Entity Type: Individual
  • PECOS Registration: Yes
  • Address: 9103 JEFFERSON HWY
    BATON ROUGE, LA
    ZIP 70809
  • Phone: (225) 927-1190

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NPI Details

DR. John Walker Mcdonald, M.D. is a gastroenterology internal medicine in Baton Rouge, LA with 22 years of experience. The provider is 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. DR. John Walker Mcdonald, M.D. NPI is 1386834281. The provider is registered as an individual entity type.

The NPPES NPI record indicates the provider is a male.

Education
Medical School: LOUISIANA STATE UNIVERSITY SCHOOL OF MEDICINE IN SHREVEPORT
Graduation Year:2004

The provider's business location address is:

9103 JEFFERSON HWY
BATON ROUGE, LA
ZIP 70809-440
Phone: (225) 927-1190
Fax: (225) 706-0160

The NPI 1386834281 is registered in the Medicare Provider, Enrollment, Chain and Ownership System (PECOS). The provider is legally eligible to order and refer Part B (Clinical Laboratory and Imaging), Durable Medical Equipment, Part A Home Health Agency (HHA), Power Mobility Devices.

The following top HCPCS codes were publicly reported for this provider under the Medicare program for the year 2016. The reported codes are based on the top codes for each available Medicare specialty, excluding evaluation and management codes.

  • Low osmolar contrast material, 300-399 mg/ml iodine concentration, per ml (HCPCS:Q9967)
  • Chronic care management services for two or more chronic conditions, additional 20 minutes of clinical staff time directed by health care professional, per calendar month (HCPCS:99439)
  • Chronic care management services, first 20 minutes of clinical staff time directed by health care professional, per calendar month (HCPCS:99490)
  • Established patient office or other outpatient visit, 30-39 minutes (HCPCS:99214)
  • Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope (HCPCS:43239)
  • Established patient office or other outpatient visit, 20-29 minutes (HCPCS:99213)
  • Ultrasound exam of esophagus, stomach, and/or upper small bowel using a flexible endoscope (HCPCS:43259)
  • Removal of polyps or growths of large bowel using an endoscope with mechanical snare (HCPCS:45385)
  • New patient office or other outpatient visit, 45-59 minutes (HCPCS:99204)
  • Initial hospital inpatient care per day, typically 50 minutes (HCPCS:99222)
  • Colorectal cancer screening; colonoscopy on individual at high risk (HCPCS:G0105)
  • Follow-up hospital inpatient care per day, typically 25 minutes (HCPCS:99232)
  • Follow-up hospital inpatient care per day, typically 15 minutes (HCPCS:99231)
  • Balloon dilation of esophagus, stomach, and/or upper small bowel using a flexible endoscope, less than 3.0 cm (HCPCS:43249)
  • Biopsy of large bowel using a flexible endoscope (HCPCS:45380)
  • Complete ultrasound scan of abdomen (HCPCS:76700)
  • Colorectal cancer screening; colonoscopy on individual not meeting criteria for high risk (HCPCS:G0121)
  • New patient office or other outpatient visit, 30-44 minutes (HCPCS:99203)
  • Colonoscopy (HCPCS:NAN13)
  • Upper gastrointestinal (GI) endoscopy for acid reflux (HCPCS:NAN12)
  • Melanoma (skin cancer) excision (HCPCS:NAN03)

The enumeration date for this NPI number is 7/26/2007 and was last updated on 11/7/2014.

Taxonomy Codes

The NPI record includes the healthcare provider taxonomy classification, state license number and state of licensure. The following information regarding the scope of practice of this provider is available:

No. Taxonomy Code Taxonomy Clasification Taxonomy Specialization License Number License State Primary
1207RG0100XInternal MedicineGastroenterologyMD.200458LOUISIANAYes

What is NPI?

NPI stands for National Provider Identifier. The NPI is a 10-digit identification number that is completely unique. The NPI number by itself does not contain any identifiable information such as a provider’s speciality or location. The NPI is assigned to individuals or organizacions for their lifespan and it is independent of key provider information type updates like a change of practices, location or speciality.

This page was last updated on: 11/21/2025

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