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Roger Greenlaw, M.D.
NPI 1699761890 · Gastroenterology Physician · Rockford, IL
Roger Greenlaw, M.D. is a Gastroenterology Physician provider in Rockford, IL (NPI 1699761890).
Provider details
- NPI number
- 1699761890
- Entity type
- Individual
- Primary specialty
- Gastroenterology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 36051426 (IL)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
Detailed profile(91/100 index)
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
20 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
401 Roxbury Rd
Rockford, IL 61107-5075
Phone: (815) 397-7340
Fax: (815) 397-2156
Street-level locationGet directions
Mailing address
401 Roxbury Rd
Rockford, IL 61107-5075
Registry dates
- Enumerated
- 2005-09-22
- Last updated
- 2007-09-06
Frequently asked questions
- What is Roger Greenlaw's NPI number?
- Roger Greenlaw's National Provider Identifier (NPI) is 1699761890, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Roger Greenlaw's specialty?
- Roger Greenlaw is listed in the NPPES registry with a primary specialty of Gastroenterology Physician (Allopathic & Osteopathic Physicians).
- Where is Roger Greenlaw located?
- Roger Greenlaw's practice location on file with NPPES is 401 Roxbury Rd, Rockford, IL 61107-5075.
- What is Roger Greenlaw's phone number?
- The practice phone number listed in the NPPES registry for Roger Greenlaw is (815) 397-7340.
- Is Roger Greenlaw's NPI active?
- Yes — Roger Greenlaw's NPI (1699761890) is active in the NPPES registry as of the last update on 2007-09-06.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.