OrganizationActive
Gerald S Friedman M D Inc
NPI 1861791105 · Nephrology Physician · Upland, CA
Gerald S Friedman M D Inc is a Nephrology Physician organization in Upland, CA (NPI 1861791105).
Provider details
- NPI number
- 1861791105
- Entity type
- Organization
- Primary specialty
- Nephrology PhysicianAllopathic & Osteopathic Physicians
- Organization subpart
- No
- Authorized official
- Gerald Friedman, President(909) 373-1799
- License
- G19835 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
Detailed profile(82/100 index)
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
15 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
600 N 13th Ave
Suite 100
Upland, CA 91786-4957
Phone: (909) 373-1799
Fax: (909) 373-0428
Street-level locationGet directions
Mailing address
600 N 13th Ave
Upland, CA 91786-4957
Registry dates
- Enumerated
- 2011-03-25
- Last updated
- 2011-03-25
Frequently asked questions
- What is Gerald S Friedman M D Inc's NPI number?
- Gerald S Friedman M D Inc's National Provider Identifier (NPI) is 1861791105, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What type of organization is Gerald S Friedman M D Inc?
- Gerald S Friedman M D Inc is classified in the NPPES registry as Nephrology Physician (Allopathic & Osteopathic Physicians).
- Where is Gerald S Friedman M D Inc located?
- Gerald S Friedman M D Inc's practice location on file with NPPES is 600 N 13th Ave, Upland, CA 91786-4957.
- What is Gerald S Friedman M D Inc's phone number?
- The practice phone number listed in the NPPES registry for Gerald S Friedman M D Inc is (909) 373-1799.
- Who is the authorized official for Gerald S Friedman M D Inc?
- The authorized official listed on Gerald S Friedman M D Inc's NPPES record is Gerald Friedman, President. The authorized official registers and maintains the organization's NPI and is not necessarily its owner.
- Is Gerald S Friedman M D Inc's NPI active?
- Yes — Gerald S Friedman M D Inc's NPI (1861791105) is active in the NPPES registry as of the last update on 2011-03-25.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.