NPI Portal NPI Lookup & Verification

John Mcdonald, DO

John Mcdonald is a Internal Medicine Physician provider (Internal Medicine) practicing in Longview, TX, registered in the NPPES registry with NPI 1225012701 since 2005. The credential DO stands for Doctor of Osteopathic Medicine.

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NPI 1225012701
Entity type Individual (Type 1)
Name John Mcdonald
Credential DO
Sex Male
Practice address 2101 W LOOP 281, Longview, TX, 75604
Phone 9033155600
Fax 9033152757
Enumeration date 2005-11-30
Last updated in NPPES 2016-06-17

Taxonomy & licenses

Taxonomy code Specialty Primary License State
207R00000X Internal Medicine Physician Primary K1553 TX

DO — Doctor of Osteopathic Medicine: A fully licensed physician trained in osteopathic medical schools, with the same practice rights as an MD. About the DO credential

Copy-ready billing details
Provider: John Mcdonald, DO
NPI: 1225012701
Taxonomy: 207R00000X (Internal Medicine Physician)
Address: 2101 W LOOP 281, Longview, TX, 75604

Other providers at this practice address

NPI Name Type Specialty Location
1417927401 Nils Erikson Individual Rheumatology Physician Longview, TX
1447308903 East Texas Primary Care Physicians, Pllc Organization Family Medicine Physician Longview, TX
1588792451 Lloyd Callens Individual Clinical Social Worker Longview, TX
1073815932 Robert C. Mcdaniel, M.D. Organization Urgent Care Clinic/Center Longview, TX
1528314721 Loui Gatdula Individual Internal Medicine Physician Longview, TX
1457690174 Cally Nicholson Individual Professional Counselor Longview, TX

Verify this record

Cross-check NPI 1225012701 against the authoritative CMS record: view John Mcdonald on the official NPPES registry .

What is an NPI number?

A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes — even if the provider moves or changes specialty. Read the full guide or validate an NPI number.

Frequently asked questions

Is this the official NPI registry?
No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.
What specialty is John Mcdonald?
John Mcdonald is registered in NPPES with the primary taxonomy of Internal Medicine Physician. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

Source: CMS NPPES (public data). Snapshot 2026-07-11. Provider record last updated 2016-06-17.