MR. RICHARD LEAKE JOHNSTON MD NPI 1790717478

NPI Information

  • NPI: 1790717478
  • Provider Name: MR. RICHARD LEAKE JOHNSTON, MD
  • Classification: Internal Medicine - 207RG0100X
  • Specialization: Gastroenterology
  • Entity Type: Individual
  • PECOS Registration: Yes
  • Address: 600 LEIGH DRIVE
    COLUMBUS, MS
    ZIP 39705
  • Phone: (662) 327-7525

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NPI Details

MR. Richard Leake Johnston, MD is a gastroenterology internal medicine in Columbus, MS with 24 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. MR. Richard Leake Johnston, MD NPI is 1790717478. The provider is registered as an individual entity type.

The NPPES NPI record indicates the provider is a male.

Education
Medical School: UNIVERSITY OF MISSISSIPPI SCHOOL OF MEDICINE
Graduation Year:2002

The provider's business location address is:

600 LEIGH DRIVE
COLUMBUS, MS
ZIP 39705
Phone: (662) 327-7525
Fax: (662) 243-2252

The NPI 1790717478 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.

  • 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)
  • Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope (HCPCS:43239)
  • Biopsy of large bowel using a flexible endoscope (HCPCS:45380)
  • 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)
  • Blood glucose (sugar) test performed by hand-held instrument (HCPCS:82962)
  • Established patient office or other outpatient visit, 30-39 minutes (HCPCS:99214)
  • Dilation of esophagus (HCPCS:43450)
  • Insertion of needle into vein for collection of blood sample (HCPCS:36415)
  • Follow-up hospital inpatient care per day, typically 25 minutes (HCPCS:99232)
  • Initial hospital inpatient care per day, typically 50 minutes (HCPCS:99222)
  • Office or other outpatient visit for the evaluation and management of established patient that may not require presence of healthcare professional (HCPCS:99211)
  • Colorectal cancer screening; colonoscopy on individual at high risk (HCPCS:G0105)
  • Measurement of liver stiffness (HCPCS:91200)
  • Remote monitoring of physiologic parameters, initial set-up and patient education on use of equipment (HCPCS:99453)
  • Diagnostic exam of large bowel using a flexible endoscope (HCPCS:45378)
  • Measurement of hydrogen in breath to test for stomach and bowel symptoms (HCPCS:91065)
  • Colorectal cancer screening; colonoscopy on individual not meeting criteria for high risk (HCPCS:G0121)
  • Diagnostic exam of esophagus, stomach, and/or upper small bowel using a flexible endoscope (HCPCS:43235)
  • Detection test by immunoassay technique for severe acute respiratory syndrome coronavirus (HCPCS:87426)
  • New patient office or other outpatient visit, 30-44 minutes (HCPCS:99203)
  • Colonoscopy (HCPCS:NAN13)
  • Upper gastrointestinal (GI) endoscopy for acid reflux (HCPCS:NAN12)

The enumeration date for this NPI number is 7/6/2006 and was last updated on 1/10/2012.

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 MedicineGastroenterologyTRN-10588FLORIDANo
2207R00000XInternal Medicine18377MISSISSIPPINo
3207RG0100XInternal MedicineGastroenterology18377MISSISSIPPIYes

Other Identifiers

The following information regarding additional identifiers associated to this NPI record includes the other identifier number, identifier type, identifier state and issuer.

No. Other Provider Identifier Other Provider Identifier Type Other Provider Identifier State Other Provider Identifier Issuer
1I04746MEDICARE UPINMISSISSIPPI
204604768MEDICAIDMISSISSIPPI
3302I100819MEDICARE PIN

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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