Henry P Sideropoulos MD Inc
NPI 1366800823 · Internal Medicine Physician · Pasadena, CA
Henry P Sideropoulos MD Inc is a Internal Medicine Physician organization in Pasadena, CA (NPI 1366800823).
Provider details
- NPI number
- 1366800823
- Entity type
- Organization
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Organization subpart
- No
- Authorized official
- Henry Sideropoulos, MD(909) 484-2865
- 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
10 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
Other names (DBA / former)
- Former legal business name
- Henry P Sideropoulos MD Inc
Registry dates
- Enumerated
- 2016-01-29
- Last updated
- 2016-07-29
Frequently asked questions
- What is Henry P Sideropoulos MD Inc's NPI number?
- Henry P Sideropoulos MD Inc's National Provider Identifier (NPI) is 1366800823, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What type of organization is Henry P Sideropoulos MD Inc?
- Henry P Sideropoulos MD Inc is classified in the NPPES registry as Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Henry P Sideropoulos MD Inc located?
- Henry P Sideropoulos MD Inc's practice location on file with NPPES is 1771 E Orange Grove Blvd, Pasadena, CA 91104-0000.
- What is Henry P Sideropoulos MD Inc's phone number?
- The practice phone number listed in the NPPES registry for Henry P Sideropoulos MD Inc is (626) 484-8947.
- Who is the authorized official for Henry P Sideropoulos MD Inc?
- The authorized official listed on Henry P Sideropoulos MD Inc's NPPES record is Henry Sideropoulos, MD. The authorized official registers and maintains the organization's NPI and is not necessarily its owner.
- Is Henry P Sideropoulos MD Inc's NPI active?
- Yes — Henry P Sideropoulos MD Inc's NPI (1366800823) is active in the NPPES registry as of the last update on 2016-07-29.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.