William Reed, MD
NPI 1538231212 · Internal Medicine Physician · Chicago, IL
William Reed, MD is a Internal Medicine Physician provider in Chicago, IL (NPI 1538231212).
Provider details
- NPI number
- 1538231212
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- Yes
- License
- 43566020 (WI)
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
- 2006-11-15
- Last updated
- 2023-03-07
Frequently asked questions
- What is William Reed's NPI number?
- William Reed's National Provider Identifier (NPI) is 1538231212, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is William Reed's specialty?
- William Reed is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is William Reed located?
- William Reed's practice location on file with NPPES is 400 E Ohio St Apt 1003, Chicago, IL 60611-4605.
- What is William Reed's phone number?
- The practice phone number listed in the NPPES registry for William Reed is (312) 587-8582.
- Is William Reed's NPI active?
- Yes — William Reed's NPI (1538231212) is active in the NPPES registry as of the last update on 2023-03-07.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.