Joyce Gertzen, M.D.
NPI 1588740591 · Internal Medicine Physician · Oak Forest, IL
Joyce Gertzen, M.D. is a Internal Medicine Physician provider in Oak Forest, IL (NPI 1588740591).
Provider details
- NPI number
- 1588740591
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Female
- Sole proprietor
- No
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
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
- 2006-10-31
- Last updated
- 2007-07-08
Frequently asked questions
- What is Joyce Gertzen's NPI number?
- Joyce Gertzen's National Provider Identifier (NPI) is 1588740591, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Joyce Gertzen's specialty?
- Joyce Gertzen is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Joyce Gertzen located?
- Joyce Gertzen's practice location on file with NPPES is 15900 South Cicero Ave, Oak Forest, IL 60452-4006.
- What is Joyce Gertzen's phone number?
- The practice phone number listed in the NPPES registry for Joyce Gertzen is (708) 687-7200.
- Is Joyce Gertzen's NPI active?
- Yes — Joyce Gertzen's NPI (1588740591) 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.