Karen Ferrer, M.D.
NPI 1851411920 · Anatomic Pathology & Clinical Pathology Physician · Chicago, IL
Enrolled with Medicare as Practitioner - Pathology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Karen Ferrer, M.D. is a Anatomic Pathology & Clinical Pathology Physician provider in Chicago, IL (NPI 1851411920).
Provider details
- NPI number
- 1851411920
- Entity type
- Individual
- Primary specialty
- Anatomic Pathology & Clinical Pathology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Female
- Sole proprietor
- Yes
- License
- 036-078719 (IL)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
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
Registry dates
- Enumerated
- 2007-03-30
- Last updated
- 2021-04-23
- Certified
- 2021-04-23
Frequently asked questions
- What is Karen Ferrer's NPI number?
- Karen Ferrer's National Provider Identifier (NPI) is 1851411920, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Karen Ferrer's specialty?
- Karen Ferrer is listed in the NPPES registry with a primary specialty of Anatomic Pathology & Clinical Pathology Physician (Allopathic & Osteopathic Physicians).
- Where is Karen Ferrer located?
- Karen Ferrer's practice location on file with NPPES is 1901 W Harrison St, Chicago, IL 60612-3714.
- What is Karen Ferrer's phone number?
- The practice phone number listed in the NPPES registry for Karen Ferrer is (312) 864-2443.
- Does Karen Ferrer accept Medicare?
- Karen Ferrer is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Karen Ferrer's NPI active?
- Yes — Karen Ferrer's NPI (1851411920) is active in the NPPES registry as of the last update on 2021-04-23.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.