Randy Zimmerman, MD
NPI 1427044171 · Obstetrics & Gynecology Physician · Barrington, IL
Randy Zimmerman, MD is a Obstetrics & Gynecology Physician provider in Barrington, IL (NPI 1427044171).
Provider details
- NPI number
- 1427044171
- Entity type
- Individual
- Primary specialty
- Obstetrics & Gynecology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
Specialties & taxonomies
Allopathic & Osteopathic Physicians
- Obstetrics & Gynecology Physician207V00000X
Allopathic & Osteopathic Physicians
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
- 2005-09-27
- Last updated
- 2007-11-26
Frequently asked questions
- What is Randy Zimmerman's NPI number?
- Randy Zimmerman's National Provider Identifier (NPI) is 1427044171, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Randy Zimmerman's specialty?
- Randy Zimmerman is listed in the NPPES registry with a primary specialty of Obstetrics & Gynecology Physician (Allopathic & Osteopathic Physicians).
- Where is Randy Zimmerman located?
- Randy Zimmerman's practice location on file with NPPES is 27750 W Highway 22, Barrington, IL 60010-2379.
- What is Randy Zimmerman's phone number?
- The practice phone number listed in the NPPES registry for Randy Zimmerman is (847) 277-0500.
- Is Randy Zimmerman's NPI active?
- Yes — Randy Zimmerman's NPI (1427044171) is active in the NPPES registry as of the last update on 2007-11-26.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.