Mervin J. Weis & Bruce L. Ferguson MD, Sc
NPI 1821218793 · Internal Medicine Physician · Chicago, IL
Mervin J. Weis & Bruce L. Ferguson MD, Sc is a Internal Medicine Physician organization in Chicago, IL (NPI 1821218793).
Provider details
- NPI number
- 1821218793
- Entity type
- Organization
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Organization subpart
- No
- Authorized official
- Bruce Ferguson, Doctor(773) 769-4413
Specialties & taxonomies
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
- 2007-04-26
- Last updated
- 2020-08-22
Frequently asked questions
- What is Mervin J. Weis & Bruce L. Ferguson MD, Sc's NPI number?
- Mervin J. Weis & Bruce L. Ferguson MD, Sc's National Provider Identifier (NPI) is 1821218793, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What type of organization is Mervin J. Weis & Bruce L. Ferguson MD, Sc?
- Mervin J. Weis & Bruce L. Ferguson MD, Sc is classified in the NPPES registry as Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Mervin J. Weis & Bruce L. Ferguson MD, Sc located?
- Mervin J. Weis & Bruce L. Ferguson MD, Sc's practice location on file with NPPES is 4640 N Marine Dr, Chicago, IL 60640-5719.
- What is Mervin J. Weis & Bruce L. Ferguson MD, Sc's phone number?
- The practice phone number listed in the NPPES registry for Mervin J. Weis & Bruce L. Ferguson MD, Sc is (773) 769-4413.
- Who is the authorized official for Mervin J. Weis & Bruce L. Ferguson MD, Sc?
- The authorized official listed on Mervin J. Weis & Bruce L. Ferguson MD, Sc's NPPES record is Bruce Ferguson, Doctor. The authorized official registers and maintains the organization's NPI and is not necessarily its owner.
- Is Mervin J. Weis & Bruce L. Ferguson MD, Sc's NPI active?
- Yes — Mervin J. Weis & Bruce L. Ferguson MD, Sc's NPI (1821218793) is active in the NPPES registry as of the last update on 2020-08-22.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.