John Smallwood, M.D.
NPI 1477629491 · Hematology & Oncology Physician · Flossmoor, IL
John Smallwood, M.D. is a Hematology & Oncology Physician provider in Flossmoor, IL (NPI 1477629491).
Provider details
- NPI number
- 1477629491
- Entity type
- Individual
- Primary specialty
- Hematology & Oncology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- Yes
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
83% 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
- 2006-11-28
- Last updated
- 2007-07-08
Frequently asked questions
- What is John Smallwood's NPI number?
- John Smallwood's National Provider Identifier (NPI) is 1477629491, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is John Smallwood's specialty?
- John Smallwood is listed in the NPPES registry with a primary specialty of Hematology & Oncology Physician (Allopathic & Osteopathic Physicians).
- Where is John Smallwood located?
- John Smallwood's practice location on file with NPPES is 2448 Brookwood Dr, Flossmoor, IL 60422-1826.
- What is John Smallwood's phone number?
- The practice phone number listed in the NPPES registry for John Smallwood is (708) 957-3383.
- Is John Smallwood's NPI active?
- Yes — John Smallwood's NPI (1477629491) is active in the NPPES registry as of the last update on 2007-07-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.