Leon J Frazin, M.D.
NPI 1003912908 · Cardiovascular Disease Physician · Chicago, IL
Leon J Frazin, M.D. is a Cardiovascular Disease Physician organization in Chicago, IL (NPI 1003912908).
Provider details
- NPI number
- 1003912908
- Entity type
- Organization
- Primary specialty
- Cardiovascular Disease PhysicianAllopathic & Osteopathic Physicians
- Organization subpart
- No
- Authorized official
- Leon Frazin, Physician/Surgeon(847) 635-6490
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
19 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
Other names (DBA / former)
- Doing business as
- Leon J Frazin, M.D., S.c.
Registry dates
- Enumerated
- 2006-09-16
- Last updated
- 2020-08-22
Frequently asked questions
- What is Leon J Frazin, M.D.'s NPI number?
- Leon J Frazin, M.D.'s National Provider Identifier (NPI) is 1003912908, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What type of organization is Leon J Frazin, M.D.?
- Leon J Frazin, M.D. is classified in the NPPES registry as Cardiovascular Disease Physician (Allopathic & Osteopathic Physicians).
- Where is Leon J Frazin, M.D. located?
- Leon J Frazin, M.D.'s practice location on file with NPPES is 2222 W Division St, Chicago, IL 60622-2717.
- What is Leon J Frazin, M.D.'s phone number?
- The practice phone number listed in the NPPES registry for Leon J Frazin, M.D. is (773) 276-0988.
- Who is the authorized official for Leon J Frazin, M.D.?
- The authorized official listed on Leon J Frazin, M.D.'s NPPES record is Leon Frazin, Physician/Surgeon. The authorized official registers and maintains the organization's NPI and is not necessarily its owner.
- Is Leon J Frazin, M.D.'s NPI active?
- Yes — Leon J Frazin, M.D.'s NPI (1003912908) is active in the NPPES registry as of the last update on 2020-08-22.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.