Rajeev Dewan, M.D.
NPI 1699806638 · Geriatric Medicine (Internal Medicine) Physician · O Fallon, IL
Rajeev Dewan, M.D. is a Geriatric Medicine (Internal Medicine) Physician provider in O Fallon, IL (NPI 1699806638).
Provider details
- NPI number
- 1699806638
- Entity type
- Individual
- Primary specialty
- Geriatric Medicine (Internal Medicine) PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- Yes
- License
- 2004025502 (MO)
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
- 2007-03-09
- Last updated
- 2007-07-08
Frequently asked questions
- What is Rajeev Dewan's NPI number?
- Rajeev Dewan's National Provider Identifier (NPI) is 1699806638, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Rajeev Dewan's specialty?
- Rajeev Dewan is listed in the NPPES registry with a primary specialty of Geriatric Medicine (Internal Medicine) Physician (Allopathic & Osteopathic Physicians).
- Where is Rajeev Dewan located?
- Rajeev Dewan's practice location on file with NPPES is 1206 Hamlin Ct, O Fallon, IL 62269-3557.
- What is Rajeev Dewan's phone number?
- The practice phone number listed in the NPPES registry for Rajeev Dewan is (618) 624-0220.
- Is Rajeev Dewan's NPI active?
- Yes — Rajeev Dewan's NPI (1699806638) 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.