What is Mark De Ruyter's NPI number?

Mark De Ruyter's National Provider Identifier (NPI) is 1427482199, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.

What is Mark De Ruyter's specialty?

Mark De Ruyter is listed in the NPPES registry with a primary specialty of Social Worker (Behavioral Health & Social Service Providers).

Where is Mark De Ruyter located?

Mark De Ruyter's practice location on file with NPPES is 116 E. 11th St., Spencer, IA 51301.

What is Mark De Ruyter's phone number?

The practice phone number listed in the NPPES registry for Mark De Ruyter is (712) 264-6048.

Is Mark De Ruyter's NPI active?

Yes — Mark De Ruyter's NPI (1427482199) is active in the NPPES registry as of the last update on 2013-08-29.

IndividualActive

Mark De Ruyter, LMSW

NPI 1427482199 · Social Worker · Spencer, IA

Mark De Ruyter, LMSW is a Social Worker provider in Spencer, IA (NPI 1427482199).

Provider details

NPI number: 1427482199
Entity type: Individual
Primary specialty: Social WorkerBehavioral Health & Social Service Providers
Credential: LMSW
Sex: Male
Sole proprietor: No
License: 02160 (IA)

Practice location

116 E. 11th St.

Spencer, IA 51301

Phone: (712) 264-6048

Street-level locationGet directions

More IA providers

Mailing address

116 E. 11th St.

Spencer, IA 51301

Specialties & taxonomies

Social WorkerPrimary104100000XLicense 02160 (IA)
Behavioral Health & Social Service Providers

Profile Score

Detailed profile(78/100 index)

A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.

Registry tenure38% of score
13 yrs in NPPES registry
Profile completeness38% of score
100% of core fields populated
Practice footprint23% of score
1 documented practice location

Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.

Enumerated: 2013-08-29
Last updated: 2013-08-29

Frequently asked questions

What is Mark De Ruyter's NPI number?: Mark De Ruyter's National Provider Identifier (NPI) is 1427482199, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
What is Mark De Ruyter's specialty?: Mark De Ruyter is listed in the NPPES registry with a primary specialty of Social Worker (Behavioral Health & Social Service Providers).
Where is Mark De Ruyter located?: Mark De Ruyter's practice location on file with NPPES is 116 E. 11th St., Spencer, IA 51301.
What is Mark De Ruyter's phone number?: The practice phone number listed in the NPPES registry for Mark De Ruyter is (712) 264-6048.
Is Mark De Ruyter's NPI active?: Yes — Mark De Ruyter's NPI (1427482199) is active in the NPPES registry as of the last update on 2013-08-29.

Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.

Provider details

Practice location

Mailing address

Specialties & taxonomies

Profile Score

Registry dates

Frequently asked questions

Specialties & taxonomies

Profile Score

Frequently asked questions