What is Harry Haessner's NPI number?

Harry Haessner's National Provider Identifier (NPI) is 1093652943, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.

What is Harry Haessner's specialty?

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

Where is Harry Haessner located?

Harry Haessner's practice location on file with NPPES is 75 N Fair Oaks Ave, Pasadena, CA 91103-3651.

What is Harry Haessner's phone number?

The practice phone number listed in the NPPES registry for Harry Haessner is (626) 529-7735.

Is Harry Haessner's NPI active?

Yes — Harry Haessner's NPI (1093652943) is active in the NPPES registry as of the last update on 2026-04-29.

IndividualActive

Harry Haessner, MPA, MSW

NPI 1093652943 · Social Worker · Pasadena, CA

Harry Haessner, MPA, MSW is a Social Worker provider in Pasadena, CA (NPI 1093652943).

Provider details

NPI number: 1093652943
Entity type: Individual
Primary specialty: Social WorkerBehavioral Health & Social Service Providers
Credential: MPA, MSW
Sex: Male
Sole proprietor: No

Specialties & taxonomies

Social WorkerPrimary104100000X
Behavioral Health & Social Service Providers
Case Manager/Care Coordinator171M00000X
Other Service Providers

Profile Score

Basic profile(46/100 index)

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

Registry tenure38% of score
Under 1 yr in registry
Profile completeness38% of score
83% 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.

Practice location

75 N Fair Oaks Ave

Pasadena, CA 91103-3651

Phone: (626) 529-7735

Street-level locationGet directions

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Mailing address