Jennifer Knowles, MD
NPI 1699846592 · Cardiovascular Disease Physician · Fontana, CA
Jennifer Knowles, MD is a Cardiovascular Disease Physician provider in Fontana, CA (NPI 1699846592).
Provider details
- NPI number
- 1699846592
- Entity type
- Individual
- Primary specialty
- Cardiovascular Disease PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- No
- License
- G55437 (CA)
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
- 2006-11-13
- Last updated
- 2008-09-23
Frequently asked questions
- What is Jennifer Knowles's NPI number?
- Jennifer Knowles's National Provider Identifier (NPI) is 1699846592, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Jennifer Knowles's specialty?
- Jennifer Knowles is listed in the NPPES registry with a primary specialty of Cardiovascular Disease Physician (Allopathic & Osteopathic Physicians).
- Where is Jennifer Knowles located?
- Jennifer Knowles's practice location on file with NPPES is 9961 Sierra Ave, Fontana, CA 92335-6720.
- What is Jennifer Knowles's phone number?
- The practice phone number listed in the NPPES registry for Jennifer Knowles is (909) 427-3910.
- Is Jennifer Knowles's NPI active?
- Yes — Jennifer Knowles's NPI (1699846592) is active in the NPPES registry as of the last update on 2008-09-23.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.