Stewart Guentner, REGISTERED DIETITIAN
NPI 1023387172 · Registered Dietitian · San Marcos, CA
Stewart Guentner, REGISTERED DIETITIAN is a Registered Dietitian provider in San Marcos, CA (NPI 1023387172).
Provider details
- NPI number
- 1023387172
- Entity type
- Individual
- Primary specialty
- Registered DietitianDietary & Nutritional Service Providers
- Credential
- REGISTERED DIETITIAN
- Sex
- Male
- Sole proprietor
- Yes
- License
- 00721609 (CA)
Specialties & taxonomies
Dietary & Nutritional Service Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
14 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
- 2011-12-19
- Last updated
- 2013-01-09
Frequently asked questions
- What is Stewart Guentner's NPI number?
- Stewart Guentner's National Provider Identifier (NPI) is 1023387172, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Stewart Guentner's specialty?
- Stewart Guentner is listed in the NPPES registry with a primary specialty of Registered Dietitian (Dietary & Nutritional Service Providers).
- Where is Stewart Guentner located?
- Stewart Guentner's practice location on file with NPPES is 495 Borden Cir, San Marcos, CA 92069-1841.
- What is Stewart Guentner's phone number?
- The practice phone number listed in the NPPES registry for Stewart Guentner is (760) 435-2308.
- Is Stewart Guentner's NPI active?
- Yes — Stewart Guentner's NPI (1023387172) is active in the NPPES registry as of the last update on 2013-01-09.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.