Katherine Holtzman
NPI 1124539911 · Speech-Language Pathologist · Washington, DC
Katherine Holtzman is a Speech-Language Pathologist provider in Washington, DC (NPI 1124539911).
Provider details
- NPI number
- 1124539911
- Entity type
- Individual
- Primary specialty
- Speech-Language PathologistSpeech, Language and Hearing Service Providers
- Sex
- Female
- Sole proprietor
- No
Specialties & taxonomies
Speech, Language and Hearing Service Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
8 yrs in NPPES 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
Mailing address
Registry dates
- Enumerated
- 2017-10-19
- Last updated
- 2019-06-16
Frequently asked questions
- What is Katherine Holtzman's NPI number?
- Katherine Holtzman's National Provider Identifier (NPI) is 1124539911, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Katherine Holtzman's specialty?
- Katherine Holtzman is listed in the NPPES registry with a primary specialty of Speech-Language Pathologist (Speech, Language and Hearing Service Providers).
- Where is Katherine Holtzman located?
- Katherine Holtzman's practice location on file with NPPES is 412 1st St Se Lowr Level, Washington, DC 20003-1804.
- What is Katherine Holtzman's phone number?
- The practice phone number listed in the NPPES registry for Katherine Holtzman is (202) 470-4185.
- Is Katherine Holtzman's NPI active?
- Yes — Katherine Holtzman's NPI (1124539911) is active in the NPPES registry as of the last update on 2019-06-16.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.