1. Home
  2. Directory
  3. Oklahoma
  4. City
  5. Internal Medicine
  6. NPI Profile

DR. JAMES MILTON JOHNSTON MD
NPI 1144204314
Internal Medicine in Oklahoma City, OK

Active since December 01, 2005
1110 N CLASSEN BLVD, SUITE 300, OKLAHOMA CITY, OK 73106(405) 236-3736(405) 236-2137 Get Directions Write a Review

NPPES record last updated: January 10, 2011. Verified against the NPPES registry weekly; last sync: August 16, 2026.

About Dr. James Milton Johnston Md NPPES

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

DR. JAMES MILTON JOHNSTON MD (NPI 1144204314) is an individual internal medicine provider in Oklahoma City, Oklahoma, licensed in Oklahoma (9515) and active in the NPI registry since December 2005.

NPPES Registry Identity

NPI1144204314
Entity TypeIndividualMale
Primary Taxonomy207R00000X
Provider Legal NameDR. JAMES MILTON JOHNSTONCredential: MD
Location Address1110 N CLASSEN BLVD, SUITE 300Oklahoma City, OK 73106-6842
Mailing Address1110 N Classen Blvd, Suite 300Oklahoma City, OK 73106-6842 · (405) 236-3736 · Fax (405) 236-2137
Phone(405) 236-3736
Fax(405) 236-2137
Sole ProprietorNo
Enumeration DateDecember 1, 2005
Last NPPES UpdateJanuary 10, 2011
✔ NPI 1144204314 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207R00000X
License✔ Licensed in OK · 9515
Definition
A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.
Also ListedInternal Medicine · Endocrinology, Diabetes & MetabolismTaxonomy 207RE0101X · License 9515 (OK)
1110 N CLASSEN BLVD, Oklahoma City, OK 73106
Open in Google Maps ↗

Other Identifiers 3

Medicare UPIND42535
Medicaid100110380AOK
Medicare ID-Type Unspecified826023502Railroad

Other Providers at the Same Location NPPES 6

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

RICHARD C GREYSON MD
Internal Medicine
1110 N CLASSEN BLVD, SUITE 301
OKLAHOMA CITY, OK 73106
Oklahoma County (405) 232-2702
SALLY Q TAN MD PC
Clinic/Center (Medical Specialty)
1110 N CLASSEN BLVD, SUITE 204
OKLAHOMA CITY, OK 73106
Oklahoma County (405) 319-1622
CLASSEN MEDICAL CENTER PLLC
Internal Medicine (Cardiovascular Disease)
1110 N CLASSEN BLVD, SUITE 300
OKLAHOMA CITY, OK 73106
Oklahoma County (405) 236-3736
DR. SALLY QUE POA TAN M.D.
Internal Medicine
1110 N CLASSEN BLVD, SUITE 204
OKLAHOMA CITY, OK 73106
Oklahoma County (405) 319-1622
HEALTHFIRST PHYSICIANS MANAGEMENT SERVICES, INC
Hospitalist
1110 N CLASSEN BLVD, SUITE 100
OKLAHOMA CITY, OK 73106
Oklahoma County (405) 272-7452
DR. MARIA MONINA KANE M.D.
Psychiatry & Neurology (Psychiatry)
1110 N CLASSEN BLVD, SUITE 318
OKLAHOMA CITY, OK 73106
Oklahoma County (405) 232-5453

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 James Johnston's NPI number?

The NPI number for James Johnston is 1144204314. It was assigned to this individual provider in the NPPES registry on December 1, 2005.

Where is James Johnston located?

James Johnston practices at 1110 N Classen Blvd Suite 300, Oklahoma City, OK 73106. The listed phone number is (405) 236-3736.

What is James Johnston's specialty?

The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.

When was this NPI record last updated?

The NPPES record for James Johnston was last updated on January 10, 2011. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 15 years 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.