Joseph Schlag, M.A., C.C.C.-S.L.P.
NPI 1770554529 · Speech-Language Pathologist · Frederick, MD
Joseph Schlag, M.A., C.C.C.-S.L.P. is a Speech-Language Pathologist provider in Frederick, MD (NPI 1770554529).
Provider details
- NPI number
- 1770554529
- Entity type
- Individual
- Primary specialty
- Speech-Language PathologistSpeech, Language and Hearing Service Providers
- Credential
- M.A., C.C.C.-S.L.P.
- Sex
- Male
- Sole proprietor
- No
- License
- 04285 (MD)
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
20 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
- 2006-01-30
- Last updated
- 2018-11-21
Frequently asked questions
- What is Joseph Schlag's NPI number?
- Joseph Schlag's National Provider Identifier (NPI) is 1770554529, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Joseph Schlag's specialty?
- Joseph Schlag is listed in the NPPES registry with a primary specialty of Speech-Language Pathologist (Speech, Language and Hearing Service Providers).
- Where is Joseph Schlag located?
- Joseph Schlag's practice location on file with NPPES is 1636 Wheyfield Dr, Frederick, MD 21701-9336.
- What is Joseph Schlag's phone number?
- The practice phone number listed in the NPPES registry for Joseph Schlag is (412) 973-2242.
- Is Joseph Schlag's NPI active?
- Yes — Joseph Schlag's NPI (1770554529) is active in the NPPES registry as of the last update on 2018-11-21.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.