Mark Retzlaff, PTA
NPI 1841937505 · Physical Therapy Assistant · Lake Katrine, NY
Mark Retzlaff, PTA is a Physical Therapy Assistant provider in Lake Katrine, NY (NPI 1841937505).
Provider details
- NPI number
- 1841937505
- Entity type
- Individual
- Primary specialty
- Physical Therapy AssistantRespiratory, Developmental, Rehabilitative and Restorative Service Providers
- Credential
- PTA
- Sex
- Male
- Sole proprietor
- No
- License
- 001145 (NY)
Specialties & taxonomies
Respiratory, Developmental, Rehabilitative and Restorative Service Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
4 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
- 2022-05-15
- Last updated
- 2022-05-15
- Certified
- 2022-05-15
Frequently asked questions
- What is Mark Retzlaff's NPI number?
- Mark Retzlaff's National Provider Identifier (NPI) is 1841937505, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mark Retzlaff's specialty?
- Mark Retzlaff is listed in the NPPES registry with a primary specialty of Physical Therapy Assistant (Respiratory, Developmental, Rehabilitative and Restorative Service Providers).
- Where is Mark Retzlaff located?
- Mark Retzlaff's practice location on file with NPPES is 300 Grant Ave, Lake Katrine, NY 12449-5340.
- What is Mark Retzlaff's phone number?
- The practice phone number listed in the NPPES registry for Mark Retzlaff is (845) 336-3500.
- Is Mark Retzlaff's NPI active?
- Yes — Mark Retzlaff's NPI (1841937505) is active in the NPPES registry as of the last update on 2022-05-15.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.