Mary Schaefer, PA-C
NPI 1598864159 · Physician Assistant · Chicago, IL
Enrolled with Medicare as Practitioner - Physician Assistant · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Mary Schaefer, PA-C is a Physician Assistant provider in Chicago, IL (NPI 1598864159).
Provider details
- NPI number
- 1598864159
- Entity type
- Individual
- Primary specialty
- Physician AssistantPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- PA-C
- Sex
- Female
- Sole proprietor
- No
- License
- 085-002492 (IL)
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
Physician Assistants & Advanced Practice Nursing Providers
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
- 2006-09-21
- Last updated
- 2022-01-17
- Certified
- 2022-01-17
Frequently asked questions
- What is Mary Schaefer's NPI number?
- Mary Schaefer's National Provider Identifier (NPI) is 1598864159, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mary Schaefer's specialty?
- Mary Schaefer is listed in the NPPES registry with a primary specialty of Physician Assistant (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Mary Schaefer located?
- Mary Schaefer's practice location on file with NPPES is 675 N Saint Clair St Ste 21-100, Chicago, IL 60611-5970.
- What is Mary Schaefer's phone number?
- The practice phone number listed in the NPPES registry for Mary Schaefer is (312) 695-0990.
- Does Mary Schaefer accept Medicare?
- Mary Schaefer is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Mary Schaefer's NPI active?
- Yes — Mary Schaefer's NPI (1598864159) is active in the NPPES registry as of the last update on 2022-01-17.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.