IndividualActive
Frances Feng, MS,RD,LDN
NPI 1639285604 · Registered Dietitian · Vernon Hills, IL
Frances Feng, MS,RD,LDN is a Registered Dietitian provider in Vernon Hills, IL (NPI 1639285604).
Provider details
- NPI number
- 1639285604
- Entity type
- Individual
- Primary specialty
- Registered DietitianDietary & Nutritional Service Providers
- Credential
- MS,RD,LDN
- Sex
- Female
- Sole proprietor
- Yes
Specialties & taxonomies
Dietary & Nutritional Service Providers
Profile Score
Detailed profile(84/100 index)
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
1000 Butterfield Rd
Suite 1007
Vernon Hills, IL 60061-1312
Phone: (847) 968-5511
Approximate (ZIP-level) locationGet directions
Mailing address
23548 N Elm Rd
Lincolnshire, IL 60069-2200
Registry dates
- Enumerated
- 2006-08-22
- Last updated
- 2007-07-08
Frequently asked questions
- What is Frances Feng's NPI number?
- Frances Feng's National Provider Identifier (NPI) is 1639285604, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Frances Feng's specialty?
- Frances Feng is listed in the NPPES registry with a primary specialty of Registered Dietitian (Dietary & Nutritional Service Providers).
- Where is Frances Feng located?
- Frances Feng's practice location on file with NPPES is 1000 Butterfield Rd, Vernon Hills, IL 60061-1312.
- What is Frances Feng's phone number?
- The practice phone number listed in the NPPES registry for Frances Feng is (847) 968-5511.
- Is Frances Feng's NPI active?
- Yes — Frances Feng's NPI (1639285604) 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.