What is Karl Zimmerman's NPI number?

Karl Zimmerman's National Provider Identifier (NPI) is 1821497074, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.

What is Karl Zimmerman's specialty?

Karl Zimmerman is listed in the NPPES registry with a primary specialty of Behavior Analyst (Behavioral Health & Social Service Providers).

Where is Karl Zimmerman located?

Karl Zimmerman's practice location on file with NPPES is N64w24180 Main St, Sussex, WI 53089-3004.

What is Karl Zimmerman's phone number?

The practice phone number listed in the NPPES registry for Karl Zimmerman is (719) 313-6124.

Is Karl Zimmerman's NPI active?

Yes — Karl Zimmerman's NPI (1821497074) is active in the NPPES registry as of the last update on 2026-04-06.

IndividualActive

Karl Zimmerman

NPI 1821497074 · Behavior Analyst · Sussex, WI

Karl Zimmerman is a Behavior Analyst provider in Sussex, WI (NPI 1821497074).

Provider details

NPI number: 1821497074
Entity type: Individual
Primary specialty: Behavior AnalystBehavioral Health & Social Service Providers
Sex: Male
Sole proprietor: No
License: BACB267055 (WI)

Specialties & taxonomies

Behavior AnalystPrimary103K00000XLicense BACB267055 (WI)
Behavioral Health & Social Service Providers

Profile Score

Detailed profile(84/100 index)

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

Registry tenure38% of score
11 yrs in NPPES registry
Profile completeness38% of score
100% of core fields populated
Practice footprint23% of score
20 documented practice locations

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.

Practice location

N64w24180 Main St

Sussex, WI 53089-3004

Phone: (719) 313-6124

Street-level locationGet directions

More WI providers

Mailing address

N64w24180 Main St

Sussex, WI 53089-3004

Additional practice locations (19)

2705 S Alma School Rd Ste 2
Chandler, AZ 85286-4400
Phone: (866) 273-2451
Fax: (866) 608-5560
809 W. Riordan Rd. Ste 100, Pmb 1113
Flagstaff, AZ 86001-0810
Phone: (866) 273-2451
Fax: (866) 608-5560
186 E Sheldon St # 1119
Prescott, AZ 86301-3114
Phone: (866) 273-2451
Fax: (866) 608-5560
21168 E Ocotillo Rd # 1078
Queen Creek, AZ 85142-8175
Phone: (866) 273-2451
Fax: (866) 608-5560
2350 W Highway 89a # 1047
Sedona, AZ 86336-5344
Phone: (866) 273-2451
Fax: (866) 608-5560
2900 E. Broadway Blvd. Ste 100 #1206
Tuscon, AZ 85716-5344
Phone: (866) 273-2451
Fax: (866) 608-5560
1408 8th St
Alamogordo, NM 88310-5115
Phone: (866) 273-2451
Fax: (866) 608-5560

Enumerated: 2014-08-13
Last updated: 2026-04-06
Certified: 2026-04-06

Frequently asked questions

What is Karl Zimmerman's NPI number?: Karl Zimmerman's National Provider Identifier (NPI) is 1821497074, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
What is Karl Zimmerman's specialty?: Karl Zimmerman is listed in the NPPES registry with a primary specialty of Behavior Analyst (Behavioral Health & Social Service Providers).
Where is Karl Zimmerman located?: Karl Zimmerman's practice location on file with NPPES is N64w24180 Main St, Sussex, WI 53089-3004.
What is Karl Zimmerman's phone number?: The practice phone number listed in the NPPES registry for Karl Zimmerman is (719) 313-6124.
Is Karl Zimmerman's NPI active?: Yes — Karl Zimmerman's NPI (1821497074) is active in the NPPES registry as of the last update on 2026-04-06.

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