Gerald Stanley Friedman, MD
Nephrology Physician · Upland, CA
Gerald Stanley Friedman, MD is a nephrology physician with a practice address in Upland, California, and NPI 1366474322, issued on Jul 7, 2006. Check the license (California G19835, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Gerald Stanley Friedman
- Credential
- MD
- Primary taxonomy
- Nephrology Physician 207RN0300X
- License number
- G19835 CA
Self-reported in NPPES; status is on the state search - Practice location
- 600 N 13TH Ave, Upland, CA 91786
- Phone
- (909) 373-1799
- Enumerated
- Jul 7, 2006
- Record last updated
- Feb 24, 2011 (not updated in 15 years: call before relying on the address or phone)
- Fax
- (909) 373-0428
- Medicaid ID
- 00G198350 CA
- Entity
- Type 1 · individual
8 nearest nephrology physician records → All 1,468 in California → Look up another NPI →
Verify Gerald Stanley Friedman in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license G19835Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
97% fewer Medicare Part D claims than the average nephrology physician in 2024
37 Medicare Part D claims, against an average of 1,465 among the 10,986 providers of this specialty who prescribed in Part D. Brand-name drugs were 70% of claims.
Most prescribed
- Repatha Sureclick14 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Gerald Stanley Friedman among 1,468 nephrology physician records in California
Gerald Stanley Friedman, MD is one of 1,468 nephrology physician records with a practice address in California. 88% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 10% of them.
- NPI issued2006 · 10% of these records are older, 48% newer
- In a Medicare fileYes · 88% of these records are
- In the CMS Doctors and Clinicians fileNo · 77% of these records are
- Record last updated2011 · 62% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RN0300X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Nephrology Physician providers in California
There are 1,468 nephrology physician records in California.
All 1,468 in California → Every provider in Upland → Nephrology Physician nationwide →
The 8 nephrology physician records with the nearest ZIP codes
- Mohammed Alam, M.D.Upland, CA 917861750316139
- Mary BuiUpland, CA 917861841225224
- Jonardi Handoko, MDUpland, CA 917861780664581
- Minna Huang, M.D.Upland, CA 917861841447745
- Solomon Huang, M.D.Upland, CA 917861184939381
- Nima Naimi, D.O.Upland, CA 917861740424712
- Saman Sarani, M.D.Upland, CA 917861124333141
- Erlinda Uy - Concepcion, M.D.Upland, CA 917861194742775
Common questions
What is Gerald Stanley Friedman, MD's NPI number?
Gerald Stanley Friedman, MD's National Provider Identifier (NPI) is 1366474322, issued on Jul 7, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Gerald Stanley Friedman, MD located?
The NPPES record lists a practice address at 600 N 13TH Ave, Upland, CA, 91786. Phone: (909) 373-1799. Providers update this record themselves, so call before visiting.
How can I verify Gerald Stanley Friedman, MD's license?
NPPES lists California license number G19835, as entered by the provider. Search the Medical Board of California at https://www.mbc.ca.gov/License-Verification/default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Gerald Stanley Friedman, MD prescribe under Medicare Part D?
In 2024, Gerald Stanley Friedman, MD had 37 Medicare Part D claims; the average among nephrology physician prescribers was 1,465. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.