Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Oleg Maksimov, M.D.

Pain Medicine (Physical Medicine & Rehabilitation) Physician in Gresham, OR · enumerated 2006.

Data current as of Jul 13, 2026 · sourced from CMS NPPES

National Provider Identifier

1780796326

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Registry record

Entity type Individual (Type 1)

Name Oleg Maksimov

Credential M.D.

Sex Male

Practice address 689 Nw Burnside Rd Fl 2, Gresham, OR, 97030

Phone (503) 382-8106

Fax (503) 382-8100

Enumeration date Aug 31, 2006

Last updated in NPPES Sep 14, 2021

Taxonomy & licenses

208100000X Physical Medicine & Rehabilitation Physician Allopathic & Osteopathic Physicians · License MD431737 (PA) Secondary

2081P2900X Pain Medicine (Physical Medicine & Rehabilitation) Physician Allopathic & Osteopathic Physicians · License MD28526 (OR) Primary

MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD credential

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 → Validate an NPI →

Frequently asked questions

What specialty is Oleg Maksimov?

Oleg Maksimov is registered in NPPES with the primary taxonomy of Pain Medicine (Physical Medicine & Rehabilitation) Physician. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

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.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2021-09-14.