Allison Markiewicz, LMSW
NPI 1750898409 · Social Worker · New York, NY
Enrolled with Medicare as Practitioner - Clinical Social Worker · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Allison Markiewicz, LMSW is a Social Worker provider in New York, NY (NPI 1750898409).
Provider details
- NPI number
- 1750898409
- Entity type
- Individual
- Primary specialty
- Social WorkerBehavioral Health & Social Service Providers
- Credential
- LMSW
- Sex
- Female
- Sole proprietor
- No
- License
- 099405-1 (NY)
Specialties & taxonomies
Behavioral Health & Social Service Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
8 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
- 2018-01-03
- Last updated
- 2018-01-03
Frequently asked questions
- What is Allison Markiewicz's NPI number?
- Allison Markiewicz's National Provider Identifier (NPI) is 1750898409, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Allison Markiewicz's specialty?
- Allison Markiewicz is listed in the NPPES registry with a primary specialty of Social Worker (Behavioral Health & Social Service Providers).
- Where is Allison Markiewicz located?
- Allison Markiewicz's practice location on file with NPPES is 2090 Adam Clayton Powell Jr Blvd Fl 8, New York, NY 10027-4990.
- What is Allison Markiewicz's phone number?
- The practice phone number listed in the NPPES registry for Allison Markiewicz is (212) 553-6300.
- Does Allison Markiewicz accept Medicare?
- Allison Markiewicz is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Allison Markiewicz's NPI active?
- Yes — Allison Markiewicz's NPI (1750898409) is active in the NPPES registry as of the last update on 2018-01-03.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.