Gregory Clarke M.D., S.c.
NPI 1881903789 · Medical Specialty Clinic/Center · Chicago, IL
Gregory Clarke M.D., S.c. is a Medical Specialty Clinic/Center organization in Chicago, IL (NPI 1881903789).
Provider details
- NPI number
- 1881903789
- Entity type
- Organization
- Primary specialty
- Medical Specialty Clinic/CenterAmbulatory Health Care Facilities
- Organization subpart
- No
- Authorized official
- Gregory Clarke, President/Owner(312) 236-3175
- License
- 036-071641 (IL)
Specialties & taxonomies
Ambulatory Health Care Facilities
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
15 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
- 2010-09-27
- Last updated
- 2010-09-27
Frequently asked questions
- What is Gregory Clarke M.D., S.c.'s NPI number?
- Gregory Clarke M.D., S.c.'s National Provider Identifier (NPI) is 1881903789, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What type of organization is Gregory Clarke M.D., S.c.?
- Gregory Clarke M.D., S.c. is classified in the NPPES registry as Medical Specialty Clinic/Center (Ambulatory Health Care Facilities).
- Where is Gregory Clarke M.D., S.c. located?
- Gregory Clarke M.D., S.c.'s practice location on file with NPPES is 333 N Michigan Ave, Chicago, IL 60601-3901.
- What is Gregory Clarke M.D., S.c.'s phone number?
- The practice phone number listed in the NPPES registry for Gregory Clarke M.D., S.c. is (312) 236-3175.
- Who is the authorized official for Gregory Clarke M.D., S.c.?
- The authorized official listed on Gregory Clarke M.D., S.c.'s NPPES record is Gregory Clarke, President/Owner. The authorized official registers and maintains the organization's NPI and is not necessarily its owner.
- Is Gregory Clarke M.D., S.c.'s NPI active?
- Yes — Gregory Clarke M.D., S.c.'s NPI (1881903789) is active in the NPPES registry as of the last update on 2010-09-27.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.