David Rathmann, MA, CCC-SLP
NPI 1114439593 · Speech-Language Pathologist · Castro Valley, CA
Enrolled with Medicare as Practitioner - Qualified Speech Language Pathologist · source: CMS PECOS Public Provider Enrollment (2026.04.01)
David Rathmann, MA, CCC-SLP is a Speech-Language Pathologist provider in Castro Valley, CA (NPI 1114439593).
Provider details
- NPI number
- 1114439593
- Entity type
- Individual
- Primary specialty
- Speech-Language PathologistSpeech, Language and Hearing Service Providers
- Credential
- MA, CCC-SLP
- Sex
- Male
- Sole proprietor
- Yes
- License
- 26357 (CA)
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
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.
Practice location
Mailing address
Registry dates
- Enumerated
- 2017-10-25
- Last updated
- 2022-01-24
- Certified
- 2022-01-24
Frequently asked questions
- What is David Rathmann's NPI number?
- David Rathmann's National Provider Identifier (NPI) is 1114439593, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is David Rathmann's specialty?
- David Rathmann is listed in the NPPES registry with a primary specialty of Speech-Language Pathologist (Speech, Language and Hearing Service Providers).
- Where is David Rathmann located?
- David Rathmann's practice location on file with NPPES is 20103 Lake Chabot Rd, Castro Valley, CA 94546-5305.
- What is David Rathmann's phone number?
- The practice phone number listed in the NPPES registry for David Rathmann is (510) 727-3140.
- Does David Rathmann accept Medicare?
- David Rathmann is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is David Rathmann's NPI active?
- Yes — David Rathmann's NPI (1114439593) is active in the NPPES registry as of the last update on 2022-01-24.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.