Hsi Services Inc
NPI 1992342539 · Internal Medicine Physician · Redlands, CA
Enrolled with Medicare as Part B Supplier - Clinic/Group Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Hsi Services Inc is a Internal Medicine Physician organization in Redlands, CA (NPI 1992342539).
Provider details
- NPI number
- 1992342539
- Entity type
- Organization
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Organization subpart
- No
- Authorized official
- Mohamed Nassar, Director(909) 793-0323
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
6 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)
- Other name
- Mohamed Nassar M.D.
Registry dates
- Enumerated
- 2019-12-03
- Last updated
- 2020-03-13
- Certified
- 2020-03-13
Frequently asked questions
- What is Hsi Services Inc's NPI number?
- Hsi Services Inc's National Provider Identifier (NPI) is 1992342539, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What type of organization is Hsi Services Inc?
- Hsi Services Inc is classified in the NPPES registry as Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Hsi Services Inc located?
- Hsi Services Inc's practice location on file with NPPES is 255 Terracina Blvd Ste 105, Redlands, CA 92373-4870.
- What is Hsi Services Inc's phone number?
- The practice phone number listed in the NPPES registry for Hsi Services Inc is (909) 793-6526.
- Does Hsi Services Inc accept Medicare?
- Hsi Services Inc is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Who is the authorized official for Hsi Services Inc?
- The authorized official listed on Hsi Services Inc's NPPES record is Mohamed Nassar, Director. The authorized official registers and maintains the organization's NPI and is not necessarily its owner.
- Is Hsi Services Inc's NPI active?
- Yes — Hsi Services Inc's NPI (1992342539) is active in the NPPES registry as of the last update on 2020-03-13.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.