What is Katherine Terhardt's NPI number?

Katherine Terhardt's National Provider Identifier (NPI) is 1255280160, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.

What is Katherine Terhardt's specialty?

Katherine Terhardt is listed in the NPPES registry with a primary specialty of Speech-Language Pathologist (Speech, Language and Hearing Service Providers).

Where is Katherine Terhardt located?

Katherine Terhardt's practice location on file with NPPES is 25531 Commercentre Dr Ste 120, Lake Forest, CA 92630-8874.

What is Katherine Terhardt's phone number?

The practice phone number listed in the NPPES registry for Katherine Terhardt is (949) 600-5437.

Is Katherine Terhardt's NPI active?

Yes — Katherine Terhardt's NPI (1255280160) is active in the NPPES registry as of the last update on 2026-01-23.

IndividualActive

Katherine Terhardt

NPI 1255280160 · Speech-Language Pathologist · Lake Forest, CA

Katherine Terhardt is a Speech-Language Pathologist provider in Lake Forest, CA (NPI 1255280160).

Provider details

NPI number: 1255280160
Entity type: Individual
Primary specialty: Speech-Language PathologistSpeech, Language and Hearing Service Providers
Sex: Female
Sole proprietor: No
License: 21570 (CA)

Practice location

25531 Commercentre Dr Ste 120

Lake Forest, CA 92630-8874

Phone: (949) 600-5437

Approximate (ZIP-level) locationGet directions

More CA providers

Mailing address

22431 Antonio Pkwy Ste B160-493

Rsm, CA 92688-2804

Specialties & taxonomies

Speech-Language PathologistPrimary235Z00000XLicense 21570 (CA)
Speech, Language and Hearing Service Providers

Additional practice locations (1)

29811 Santa Margarita Pkwy Ste 600
Rsm, CA 92688-3617
Phone: (949) 600-5439

Profile Score

Established profile(58/100 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
100% of core fields populated
Practice footprint23% of score
2 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.

Enumerated: 2026-01-23
Last updated: 2026-01-23
Certified: 2026-01-23

Frequently asked questions

What is Katherine Terhardt's NPI number?: Katherine Terhardt's National Provider Identifier (NPI) is 1255280160, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
What is Katherine Terhardt's specialty?: Katherine Terhardt is listed in the NPPES registry with a primary specialty of Speech-Language Pathologist (Speech, Language and Hearing Service Providers).
Where is Katherine Terhardt located?: Katherine Terhardt's practice location on file with NPPES is 25531 Commercentre Dr Ste 120, Lake Forest, CA 92630-8874.
What is Katherine Terhardt's phone number?: The practice phone number listed in the NPPES registry for Katherine Terhardt is (949) 600-5437.
Is Katherine Terhardt's NPI active?: Yes — Katherine Terhardt's NPI (1255280160) is active in the NPPES registry as of the last update on 2026-01-23.

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

Additional practice locations (1)

Profile Score

Registry dates

Frequently asked questions

Specialties & taxonomies

Additional practice locations (1)

Profile Score

Frequently asked questions