Dr. Gerald Stanley Friedman, MD
- Medicare services, 2021
- 231
- Part D claims, 2024
- 37
- Industry payments
- $270
- Affiliated sites
- 1
- Insurance carriers
- 5
- Practice address
- 999 San Bernardino Rd, Upland, CA 91786
- Practice phone
- Call (909) 985-2811
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
San Antonio Regional Hospital
Upland, California
Find Dr. Friedman's professional email, personal email and mobile number
Dmand AI checks each channel through healthcare-specific waterfall enrichment. See what is on file with a free account, with practice phones, licenses and affiliations.
Dr. Gerald Stanley Friedman is a nephrologist in Upland, California
Dr. Friedman practices at San Antonio Regional Hospital in Upland, California.
Dr. Friedman's NPI, 1366474322, was assigned on July 7, 2006. Dr. Friedman graduated from University of Miami, Miller School of Medicine in 1966. Dr. Friedman's California license number on file is G19835.
- NPI
- 1366474322NPI Registry (opens in a new tab)
- NPI enumeration date
- July 7, 2006
- NPI status
- Active
- Practice phone
- (909) 985-2811
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 86
- Medical school graduation
- 1966
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Practice Data
Dr. Gerald Stanley Friedman practices at San Antonio Regional Hospital in Upland, California
Dr. Friedman's primary practice is San Antonio Regional Hospital, at 999 San Bernardino Rd, Upland, CA 91786 in San Bernardino County. The practice phone is (909) 985-2811.
- San Antonio Regional Hospital999 San Bernardino Rd, Upland, CA 91786 · San Bernardino CountyPhone(909) 985-2811
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Gerald Stanley Friedman is affiliated with 2 sites of care
Dr. Friedman's primary practice is San Antonio Regional Hospital in Upland, California. Dmand AI also links Dr. Friedman to 1 physician office, named with a free account.
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; and Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. Gerald Stanley Friedman's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Friedman practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| San Antonio Regional Hospital | Available with a free account |
| +1 more affiliated site | Available with a free account |
Source: Dmand AI Technology Install Data
For health IT teams
Dmand AI maps EHR vendors, IT decision makers and buying committees across each health system and 6.2K+ hospitals, with verified contacts in the same login.
Dr. Gerald Stanley Friedman is one of 1,401 nephrologists in California
Nephrology is Dr. Friedman's primary specialty in the NPI Registry, under taxonomy code 207RN0300X. Dr. Friedman is board certified in internal medicine by the American Board of Internal Medicine. Dmand AI has Dr. Friedman's licenses on file in 2 states: California and Florida.
Specialties and state licenses
- Nephrology, CaliforniaPrimary
- Florida license
Nephrologists near Dr. Friedman
Counts of nephrologists with a Dmand AI profile, by place and practice. Each opens the list.
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. Gerald Stanley Friedman billed Medicare for 231 services in 2021
CMS data shows 231 Medicare services from Dr. Friedman across 6 procedure codes in 2021. Medicare paid $14,538 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Friedman's Medicare services by type, 2020 to 2021
- 2020
- 2021
- Office and hospital visits
- 2020: 1622021: 1573%
- Tests and treatments
- 2020: 3142021: 7476%
Dr. Friedman compared with the California median for nephrologists, 2021
- Dr. Friedman
- California median
- Medicare services
- 231vs 1,08479% below
- Part D claims
- 14vs 95599% below
Medians across 1,355 nephrologists in California with Dmand AI profiles that report each measure.
Dr. Friedman's most billed Medicare procedure codes, 2021
CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.
Need commercial claims for Dr. Friedman?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Friedman and other nephrologists in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Gerald Stanley Friedman's patients have a median age of 75
Across all payers, Dmand AI patient panel data puts Dr. Friedman's median patient age at 75, with 50% women.
Dr. Friedman's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 75
Patient panel by sex, all payers
- Women50%
- Men50%
Source: Dmand AI Patient Panel Data
Dr. Gerald Stanley Friedman wrote 37 Medicare Part D claims in 2024
In 2024, Dr. Friedman wrote 37 Medicare Part D claims. 30% of them were for generic drugs. CMS names the drug for 14 of them, across 1 drug with 11 or more claims each, at $7,393 in total drug cost. In 2021, CMS named 176 claims across 5 drugs.
Dr. Friedman's Part D claims by kind of drug, 2024
- Generic11 claims30%
- Brand-name26 claims70%
Dr. Friedman's most prescribed drugs by claims, 2024
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Part D claims for drugs CMS names, 2021 to 2024
- 2021
- 2024
- Claims for drugs CMS names
- 2021: 1762024: 1492%
Drugs named by CMS: 1 in 2024, 5 in 2021.
Sources: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026; and Medicare Part D Prescribers - by Provider (CMS), 2024 data
For MedTech and pharma teams
Filter 7.4M+ HCPs by Medicare procedures, Part D drugs and Open Payments history, then reach them with verified contacts in one login.
Dr. Gerald Stanley Friedman received $270 in industry payments from 2016 to 2019
CMS Open Payments shows 6 general payments to Dr. Friedman from 5 drug and device companies from 2016 to 2019. Food and beverage make up the largest share, 94% of the total. Fresenius USA Marketing, Inc. paid the most, $121.
General payments to Dr. Friedman by program year, 2016 to 2019
General payments to Dr. Friedman by kind, 2016 to 2019
- Food and beverage$25494%
- Education$176%
Companies that paid Dr. Friedman the most, 2016 to 2019
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Gerald Stanley Friedman graduated from University of Miami, Miller School of Medicine
Dr. Friedman graduated from University of Miami, Miller School of Medicine in 1966.
- Medical school
- Board certified in internal medicine
Source: Dmand AI Professional Profile Data
Dr. Gerald Stanley Friedman accepts plans from 5 insurance carriers
Dr. Friedman is in network with 5 carriers, including Blue Cross Blue Shield of Michigan, Elevance and Blue Cross Blue Shield of Massachusetts. Medicare plans come from the most carriers, 5. Check the plan with the practice before a visit.
- Blue Cross Blue Shield of Michigan
- Elevance
- Blue Cross Blue Shield of Massachusetts
- HCSC
- Regence Health Plans
Plan types Dr. Friedman accepts, by number of carriers
- Medicare5
- PPO4
- POS2
- HMO1
Source: Dmand AI Insurance Network Data
Sources for Dr. Gerald Stanley Friedman's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice Data |
| Primary practice, affiliations and health system | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice DataDmand AI Affiliation Data |
| Medicare services and procedure codes | Medicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab) |
| State medians for the same specialty | Dmand AI Peer Benchmarks |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel Data |
| Part D prescribing | Medicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab)Medicare Part D Prescribers - by Provider (CMS) (opens in a new tab) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| Insurance carriers and plan types | Dmand AI Insurance Network Data |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Dr. Gerald Stanley Friedman
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Dr. Gerald Stanley Friedman's NPI number?
Dr. Gerald Stanley Friedman's NPI number is 1366474322. It was assigned on July 7, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Gerald Stanley Friedman?
Dr. Gerald Stanley Friedman is a nephrologist in Upland, California. The primary specialty in the NPI Registry is Nephrology Physician (taxonomy code 207RN0300X).
Where does Dr. Gerald Stanley Friedman practice?
Dr. Friedman practices at 999 San Bernardino Rd, Upland, CA 91786. Dr. Friedman's primary practice is San Antonio Regional Hospital in Upland, California. Dmand AI also links Dr. Friedman to 1 physician office.
What is Dr. Gerald Stanley Friedman's office phone number?
The practice phone on file for Dr. Friedman is (909) 985-2811.
What is Dr. Gerald Stanley Friedman's medical license number?
Dr. Friedman's California license number on file is G19835, one of the licenses on file in 2 states.
Which states has Dr. Gerald Stanley Friedman been licensed in?
Dmand AI has state licenses on file for Dr. Friedman in California (1971 to 2024) and Florida (1973 to 1989).
Does Dr. Gerald Stanley Friedman accept Medicare?
Yes. CMS data shows Dr. Friedman billed Medicare for 231 services in 2021.
Is Dr. Gerald Stanley Friedman board certified?
Yes. Dr. Friedman is board certified in internal medicine by the American Board of Internal Medicine.
What services does Dr. Gerald Stanley Friedman bill to Medicare?
In 2021, Dr. Friedman's most billed Medicare services were dialysis (90935), hospital inpatient care (99232) and hospital inpatient care (99231).
Where did Dr. Gerald Stanley Friedman go to medical school?
Dr. Friedman graduated from University of Miami, Miller School of Medicine in 1966.
Show 4 more questionsShow fewer questions
What drugs does Dr. Gerald Stanley Friedman prescribe most?
In 2024 Medicare Part D data, Dr. Friedman's most prescribed drugs by claims were Repatha Sureclick.
Has Dr. Gerald Stanley Friedman received payments from drug or device companies?
CMS Open Payments shows $270 in general payments to Dr. Friedman from 5 companies from 2016 to 2019. The largest total came from Fresenius USA Marketing, Inc.
How long has Dr. Gerald Stanley Friedman been practicing?
Dr. Friedman graduated from medical school in 1966, 60 years ago.
What insurance does Dr. Gerald Stanley Friedman accept?
Dr. Friedman is in network with 5 carriers, including Blue Cross Blue Shield of Michigan, Elevance and Blue Cross Blue Shield of Massachusetts. Medicare plans come from the most carriers, 5. Check the plan with the practice before a visit.
Selling to nephrology practices?
See nephrologists in California by site of care and group
Find the practices, groups and hospitals they work with, and the right people to contact at each.
- 30 days free
- Self-serve
- No credit card