Reginald Friesen, M.D.
NPI 1043642333 · Internal Medicine Physician · Alta Loma, CA
Reginald Friesen, M.D. is a Internal Medicine Physician provider in Alta Loma, CA (NPI 1043642333).
Provider details
- NPI number
- 1043642333
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- Yes
- License
- A24994 (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
12 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
- 2013-08-08
- Last updated
- 2013-08-08
Frequently asked questions
- What is Reginald Friesen's NPI number?
- Reginald Friesen's National Provider Identifier (NPI) is 1043642333, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Reginald Friesen's specialty?
- Reginald Friesen is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Reginald Friesen located?
- Reginald Friesen's practice location on file with NPPES is 6280 Malvern Ave, Alta Loma, CA 91737-3738.
- What is Reginald Friesen's phone number?
- The practice phone number listed in the NPPES registry for Reginald Friesen is (440) 522-0039.
- Is Reginald Friesen's NPI active?
- Yes — Reginald Friesen's NPI (1043642333) is active in the NPPES registry as of the last update on 2013-08-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.