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.

OrganizationActive

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

Practice location

2222 W Division St

Ste 250

Chicago, IL 60622-2717

Phone: (773) 276-0988

Fax: (773) 276-0955

Street-level locationGet directions

More IL providers

Mailing address

241 Golf Mill Ctr

Niles, IL 60714-1224

Specialties & taxonomies

Cardiovascular Disease PhysicianPrimary207RC0000X
Allopathic & Osteopathic Physicians

Other names (DBA / former)

Doing business as: Leon J Frazin, M.D., S.c.

Profile Score

Detailed profile(91/100 index)

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
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.

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.

Provider details

Practice location

Mailing address

Specialties & taxonomies

Other names (DBA / former)

Profile Score

Registry dates

Frequently asked questions

Specialties & taxonomies

Other names (DBA / former)

Profile Score

Frequently asked questions