IndividualActive
Margaret Herr, MD
NPI 1619818788 · Internal Medicine Physician · Chicago, IL
Margaret Herr, MD is a Internal Medicine Physician provider in Chicago, IL (NPI 1619818788).
Provider details
- NPI number
- 1619818788
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- Yes
- License
- 125.087592 (IL)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
Established profile(53/100 index)
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
Under 1 yr in 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
5841 S Maryland Ave Ste Mc7082
Chicago, IL 60637-1465
Phone: (773) 702-6840
Fax: (773) 702-2230
Street-level locationGet directions
Mailing address
180 Harvester Dr Ste 110
Burr Ridge, IL 60527-6686
Registry dates
- Enumerated
- 2026-04-02
- Last updated
- 2026-05-18
- Certified
- 2026-05-18
Frequently asked questions
- What is Margaret Herr's NPI number?
- Margaret Herr's National Provider Identifier (NPI) is 1619818788, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Margaret Herr's specialty?
- Margaret Herr is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Margaret Herr located?
- Margaret Herr's practice location on file with NPPES is 5841 S Maryland Ave Ste Mc7082, Chicago, IL 60637-1465.
- What is Margaret Herr's phone number?
- The practice phone number listed in the NPPES registry for Margaret Herr is (773) 702-6840.
- Is Margaret Herr's NPI active?
- Yes — Margaret Herr's NPI (1619818788) is active in the NPPES registry as of the last update on 2026-05-18.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.