Karen Mermelstein, P.A.
NPI 1134412729 · Physician Assistant · Valley Stream, NY
Karen Mermelstein, P.A. is a Physician Assistant provider in Valley Stream, NY (NPI 1134412729).
Provider details
- NPI number
- 1134412729
- Entity type
- Individual
- Primary specialty
- Physician AssistantPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- P.A.
- Sex
- Female
- Sole proprietor
- No
- License
- 008041 (NY)
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing 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
- 2011-05-16
- Last updated
- 2015-09-10
Frequently asked questions
- What is Karen Mermelstein's NPI number?
- Karen Mermelstein's National Provider Identifier (NPI) is 1134412729, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Karen Mermelstein's specialty?
- Karen Mermelstein is listed in the NPPES registry with a primary specialty of Physician Assistant (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Karen Mermelstein located?
- Karen Mermelstein's practice location on file with NPPES is 714 University St, Valley Stream, NY 11581-3518.
- What is Karen Mermelstein's phone number?
- The practice phone number listed in the NPPES registry for Karen Mermelstein is (516) 526-2230.
- Is Karen Mermelstein's NPI active?
- Yes — Karen Mermelstein's NPI (1134412729) is active in the NPPES registry as of the last update on 2015-09-10.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.