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Sander Markx, M.D.
NPI 1548420789 · Psychiatric Hospital · New York, NY
Sander Markx, M.D. is a Psychiatric Hospital provider in New York, NY (NPI 1548420789).
Provider details
- NPI number
- 1548420789
- Entity type
- Individual
- Primary specialty
- Psychiatric HospitalHospitals
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- Yes
Specialties & taxonomies
Hospitals
Profile Score
Detailed profile(81/100 index)
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
18 yrs in NPPES registry
- Profile completeness38% of score
83% 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
1051 Riverside Dr
Office 1303a
New York, NY 10032-1007
Phone: (917) 903-2599
Street-level locationGet directions
Mailing address
101 Warren St Apt A3i
Brooklyn, NY 11201-6084
Registry dates
- Enumerated
- 2008-06-11
- Last updated
- 2008-06-11
Frequently asked questions
- What is Sander Markx's NPI number?
- Sander Markx's National Provider Identifier (NPI) is 1548420789, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Sander Markx's specialty?
- Sander Markx is listed in the NPPES registry with a primary specialty of Psychiatric Hospital (Hospitals).
- Where is Sander Markx located?
- Sander Markx's practice location on file with NPPES is 1051 Riverside Dr, New York, NY 10032-1007.
- What is Sander Markx's phone number?
- The practice phone number listed in the NPPES registry for Sander Markx is (917) 903-2599.
- Is Sander Markx's NPI active?
- Yes — Sander Markx's NPI (1548420789) is active in the NPPES registry as of the last update on 2008-06-11.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.