Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Mr. Douglas H Martens, MSW, CAPSW

Blind Rehabilitation Specialist/Technologist in Milwaukee, WI · enumerated 2012 · practices at Vision Forward Association, Inc..

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

National Provider Identifier

1700135944

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)

Name Mr. Douglas H Martens

Credential MSW, CAPSW

Sex Male

Practice address 912 N Hawley Rd, Milwaukee, WI, 53213

Phone (414) 302-2763

Fax (414) 302-2764

Enumeration date Sep 4, 2012

Last updated in NPPES Sep 4, 2012

Taxonomy & licenses

2255R0406X Blind Rehabilitation Specialist/Technologist Respiratory, Developmental, Rehabilitative and Restorative Service Providers Primary

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 Douglas Martens?

Douglas Martens is registered in NPPES with the primary taxonomy of Blind Rehabilitation Specialist/Technologist. 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.

Other providers at this practice address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2012-09-04.