Nancy Siska, M.A., M.S., CCC-SLP
NPI 1538471123 · Speech-Language Pathologist · Waltham, MA
Nancy Siska, M.A., M.S., CCC-SLP is a Speech-Language Pathologist provider in Waltham, MA (NPI 1538471123).
Provider details
- NPI number
- 1538471123
- Entity type
- Individual
- Primary specialty
- Speech-Language PathologistSpeech, Language and Hearing Service Providers
- Credential
- M.A., M.S., CCC-SLP
- Sex
- Female
- Sole proprietor
- No
- License
- 5075 (MA)
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
15 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
- 2010-07-12
- Last updated
- 2010-07-12
Frequently asked questions
- What is Nancy Siska's NPI number?
- Nancy Siska's National Provider Identifier (NPI) is 1538471123, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Nancy Siska's specialty?
- Nancy Siska is listed in the NPPES registry with a primary specialty of Speech-Language Pathologist (Speech, Language and Hearing Service Providers).
- Where is Nancy Siska located?
- Nancy Siska's practice location on file with NPPES is 9 Hope Ave, Waltham, MA 02453-2741.
- What is Nancy Siska's phone number?
- The practice phone number listed in the NPPES registry for Nancy Siska is (781) 216-2215.
- Is Nancy Siska's NPI active?
- Yes — Nancy Siska's NPI (1538471123) is active in the NPPES registry as of the last update on 2010-07-12.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.