Marvin Zelkowitz, M.D.
NPI 1730189259 · Specialist · Flossmoor, IL
Enrolled with Medicare as Practitioner - Neurology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Marvin Zelkowitz, M.D. is a Specialist provider in Flossmoor, IL (NPI 1730189259).
Provider details
- NPI number
- 1730189259
- Entity type
- Individual
- Primary specialty
- SpecialistOther Service Providers
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
Specialties & taxonomies
Other Service Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
20 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
Mailing address
Registry dates
- Enumerated
- 2005-07-27
- Last updated
- 2007-07-08
Frequently asked questions
- What is Marvin Zelkowitz's NPI number?
- Marvin Zelkowitz's National Provider Identifier (NPI) is 1730189259, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Marvin Zelkowitz's specialty?
- Marvin Zelkowitz is listed in the NPPES registry with a primary specialty of Specialist (Other Service Providers).
- Where is Marvin Zelkowitz located?
- Marvin Zelkowitz's practice location on file with NPPES is 3235 Vollmer Rd, Flossmoor, IL 60422-2013.
- What is Marvin Zelkowitz's phone number?
- The practice phone number listed in the NPPES registry for Marvin Zelkowitz is (708) 957-3737.
- Does Marvin Zelkowitz accept Medicare?
- Marvin Zelkowitz is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Marvin Zelkowitz's NPI active?
- Yes — Marvin Zelkowitz's NPI (1730189259) is active in the NPPES registry as of the last update on 2007-07-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.