Leonard Dubin MD LLC
NPI 1558667451 · Internal Medicine Physician · Melrose Park, IL
Enrolled with Medicare as Part B Supplier - Clinic/Group Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Leonard Dubin MD LLC is a Internal Medicine Physician organization in Melrose Park, IL (NPI 1558667451).
Provider details
- NPI number
- 1558667451
- Entity type
- Organization
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Organization subpart
- No
- Authorized official
- Leonard Dubin, Member(708) 632-5566
- License
- 036104972 (IL)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
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
2 documented practice locations
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
Additional practice locations (1)
- 3340 Dundee Rd Ste 2n2Northbrook, IL 60062-2332Phone: (847) 454-0301
Registry dates
- Enumerated
- 2011-02-10
- Last updated
- 2025-04-17
- Certified
- 2025-04-17
Frequently asked questions
- What is Leonard Dubin MD LLC's NPI number?
- Leonard Dubin MD LLC's National Provider Identifier (NPI) is 1558667451, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What type of organization is Leonard Dubin MD LLC?
- Leonard Dubin MD LLC is classified in the NPPES registry as Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Leonard Dubin MD LLC located?
- Leonard Dubin MD LLC's practice location on file with NPPES is 675 W North Ave Ste 401, Melrose Park, IL 60160-1624.
- What is Leonard Dubin MD LLC's phone number?
- The practice phone number listed in the NPPES registry for Leonard Dubin MD LLC is (708) 632-5566.
- Does Leonard Dubin MD LLC accept Medicare?
- Leonard Dubin MD LLC is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Who is the authorized official for Leonard Dubin MD LLC?
- The authorized official listed on Leonard Dubin MD LLC's NPPES record is Leonard Dubin, Member. The authorized official registers and maintains the organization's NPI and is not necessarily its owner.
- Is Leonard Dubin MD LLC's NPI active?
- Yes — Leonard Dubin MD LLC's NPI (1558667451) is active in the NPPES registry as of the last update on 2025-04-17.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.