Karen O'Sullivan Seifert, MA CCC SLP
NPI 1679629497 · Speech-Language Pathologist · Patchogue, NY
Enrolled with Medicare as Practitioner - Qualified Speech Language Pathologist · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Karen O'Sullivan Seifert, MA CCC SLP is a Speech-Language Pathologist provider in Patchogue, NY (NPI 1679629497).
Provider details
- NPI number
- 1679629497
- Entity type
- Individual
- Primary specialty
- Speech-Language PathologistSpeech, Language and Hearing Service Providers
- Credential
- MA CCC SLP
- Sex
- Female
- Sole proprietor
- Yes
- License
- 010201-01 (NY)
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 tenure28% of score
19 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
729 Medicare services, 2024 (ranked within specialty)
Medicare volume is ranked against active providers in the same specialty. 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.
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Treatment of Speech, Language, Voice, Communication, And/Or Hearing Processing Disorder92507 | 707 | $82 |
| Evaluation of Speech Sound Production With Evaluation of Language Comprehension and Expression92523 | 22 | $241 |
Typical Medicare-allowed amounts for these services range $82–$241 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
Practice location
Mailing address
Registry dates
- Enumerated
- 2007-01-26
- Last updated
- 2020-04-23
- Certified
- 2020-04-23
Frequently asked questions
- What is Karen O'Sullivan Seifert's NPI number?
- Karen O'Sullivan Seifert's National Provider Identifier (NPI) is 1679629497, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Karen O'Sullivan Seifert's specialty?
- Karen O'Sullivan Seifert is listed in the NPPES registry with a primary specialty of Speech-Language Pathologist (Speech, Language and Hearing Service Providers).
- Where is Karen O'Sullivan Seifert located?
- Karen O'Sullivan Seifert's practice location on file with NPPES is 5 Evans Ave, Patchogue, NY 11772-1515.
- What is Karen O'Sullivan Seifert's phone number?
- The practice phone number listed in the NPPES registry for Karen O'Sullivan Seifert is (631) 730-6670.
- Does Karen O'Sullivan Seifert accept Medicare?
- Karen O'Sullivan Seifert is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Karen O'Sullivan Seifert's NPI active?
- Yes — Karen O'Sullivan Seifert's NPI (1679629497) is active in the NPPES registry as of the last update on 2020-04-23.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.