Henry Sideropoulos, MD, MD
NPI 1790839736 · Internal Medicine Physician · Fontana, CA
Henry Sideropoulos, MD, MD is a Internal Medicine Physician provider in Fontana, CA (NPI 1790839736).
Provider details
- NPI number
- 1790839736
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- G42050 (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
- 2007-01-23
- Last updated
- 2013-10-14
Frequently asked questions
- What is Henry Sideropoulos, MD's NPI number?
- Henry Sideropoulos, MD's National Provider Identifier (NPI) is 1790839736, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Henry Sideropoulos, MD's specialty?
- Henry Sideropoulos, MD is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Henry Sideropoulos, MD located?
- Henry Sideropoulos, MD's practice location on file with NPPES is 17284 Slover Ave, Fontana, CA 92337-7584.
- What is Henry Sideropoulos, MD's phone number?
- The practice phone number listed in the NPPES registry for Henry Sideropoulos, MD is (909) 609-3501.
- Is Henry Sideropoulos, MD's NPI active?
- Yes — Henry Sideropoulos, MD's NPI (1790839736) is active in the NPPES registry as of the last update on 2013-10-14.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.