Dr. Robert K. Yamada, MD
- Medicare services, 2024
- 93
- Medicare patients, 2024
- 75
- Part D claims, 2024
- 1,619
- Industry payments
- $1,628
- Affiliated sites
- 2
- Practice address
- 1300 E Cooley Dr, Colton, CA 92324
- Practice phone
- Call (909) 793-3311
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Optum Redlands Fern Cajon Primary and Specialty Care
Colton, California
Find Dr. Yamada'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. Robert K. Yamada is a family medicine physician in Colton, California
Dr. Yamada practices at Optum Redlands Fern Cajon Primary and Specialty Care in Colton, California.
Dr. Yamada's NPI, 1790724243, was assigned on June 6, 2006. Dr. Yamada graduated from University of California, San Francisco School of Medicine in 1985. Dr. Yamada holds California license G58149.
- NPI
- 1790724243NPI Registry (opens in a new tab)
- Medicare PAC ID
- 8123156205
- NPI enumeration date
- June 6, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (909) 793-3311
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 67
- Medical school graduation
- 1985
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Robert K. Yamada practices at Optum Redlands Fern Cajon Primary and Specialty Care in Colton, California
Dr. Yamada's primary practice is Optum Redlands Fern Cajon Primary and Specialty Care, at 1300 E Cooley Dr, Colton, CA 92324 in San Bernardino County. The practice phone is (909) 793-3311.
- Optum Redlands Fern Cajon Primary and Specialty Care1300 E Cooley Dr, Colton, CA 92324 · San Bernardino CountyPhone(909) 793-3311
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Robert K. Yamada is affiliated with 3 sites of care and 2 medical groups
Dr. Yamada's primary practice is Optum Redlands Fern Cajon Primary and Specialty Care in Colton, California. The medical group on file is Optum - Downtown Los Angeles. Dmand AI also links Dr. Yamada to 2 more group practices and clinics and 1 medical group, each 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. Robert K. Yamada's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Yamada practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Optum Redlands Fern Cajon Primary and Specialty Care | Available with a free account |
| +2 more sites and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Robert K. Yamada is one of 15,680 family medicine physicians in California
Family medicine is Dr. Yamada's primary specialty in the NPI Registry, under taxonomy code 207Q00000X. Dr. Yamada is licensed in California.
Specialties and state licenses
- Family medicine, CaliforniaPrimary
Family medicine physicians near Dr. Yamada
Counts of family medicine physicians 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. Robert K. Yamada billed Medicare for 93 services in 2024
CMS data shows 93 Medicare services from Dr. Yamada across 4 procedure codes in 2024, for 75 Medicare patients. Medicare paid $9,677 for them. Every service was in an office.
Dr. Yamada's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 222024: 67205%
- Tests and treatments
- 2023: 132024: 13No change
- Other services
- 2023: 02024: 13
Dr. Yamada compared with the California median for family medicine physicians, 2024
- Dr. Yamada
- California median
- Medicare services
- 93vs 24662% below
- Medicare patients
- 75vs 11836% below
- Part D claims
- 1,131vs 83336% above
Medians across 15,349 family medicine physicians in California with Dmand AI profiles that report each measure.
Dr. Yamada's most billed Medicare procedure codes, 2024
CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.
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Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Yamada and other family medicine physicians in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Robert K. Yamada treated 75 Medicare patients in 2024, average age 76
CMS counts 75 Medicare patients who saw Dr. Yamada in 2024. The largest group is 65 to 74, with 35 patients. 75% of them have high blood pressure, and 69% have high cholesterol. 17% are also on Medicaid. Their average risk score is 1.15, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Yamada's median patient age at 72, with 57% women.
Dr. Yamada's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Dr. Yamada's Medicare patients by sex, 2024
- Women5573%
- Men2027%
Chronic conditions among Dr. Yamada's Medicare patients, 2024
- High blood pressure75%
- High cholesterol69%
- Arthritis43%
- Diabetes43%
- Chronic kidney disease29%
- Mood disorders21%
- Anxiety20%
- Heart failure20%
Share of Medicare patients with each condition. A patient can have several.
Dr. Yamada's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 72
Patient panel by sex, all payers
- Women57%
- Men42%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Robert K. Yamada wrote 1,619 Medicare Part D claims in 2024
In 2024, Dr. Yamada wrote 1,619 Medicare Part D claims for 445 patients. 88% of them were for generic drugs. CMS names the drug for 1,131 of them, across 43 drugs with 11 or more claims each, at $85,554 in total drug cost. In 2023, CMS named 223 claims across 11 drugs.
Dr. Yamada's Part D claims by kind of drug, 2024
- Generic1,422 claims88%
- Brand-name and other197 claims12%
Dr. Yamada'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.
Drug classes CMS tracks in Dr. Yamada's Part D claims, 2024
- Opioids3%42 of 1,619 claims
- Antibiotics3%41 of 1,619 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 2232024: 1,131407%
Drugs named by CMS: 43 in 2024, 11 in 2023.
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
How Dr. Robert K. Yamada takes part in Medicare
Dr. Yamada accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
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Dr. Robert K. Yamada received $1,628 in industry payments from 2016 to 2025
CMS Open Payments shows 112 general payments to Dr. Yamada from 13 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 100% of the total. Novo Nordisk Inc paid the most, $410.
General payments to Dr. Yamada by program year, 2016 to 2025
General payments to Dr. Yamada by kind, 2016 to 2025
- Food and beverage$1,623100%
- Education$50%
Companies that paid Dr. Yamada the most, 2016 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Robert K. Yamada graduated from University of California, San Francisco School of Medicine
Dr. Yamada graduated from University of California, San Francisco School of Medicine in 1985.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Robert K. Yamada'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 DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab) |
| 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) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (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 |
| 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. Robert K. Yamada
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. Robert K. Yamada's NPI number?
Dr. Robert K. Yamada's NPI number is 1790724243. It was assigned on June 6, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Robert K. Yamada?
Dr. Robert K. Yamada is a family medicine physician in Colton, California. The primary specialty in the NPI Registry is Family Medicine Physician (taxonomy code 207Q00000X).
Where does Dr. Robert K. Yamada practice?
Dr. Yamada practices at 1300 E Cooley Dr, Colton, CA 92324. Dr. Yamada's primary practice is Optum Redlands Fern Cajon Primary and Specialty Care in Colton, California. Dmand AI also links Dr. Yamada to 2 group practices and clinics and 1 medical group.
What is Dr. Robert K. Yamada's office phone number?
The practice phone on file for Dr. Yamada is (909) 793-3311.
What is Dr. Robert K. Yamada's medical license number?
Dr. Yamada holds California license G58149.
What medical group is Dr. Robert K. Yamada part of?
Dr. Yamada is linked to Optum - Downtown Los Angeles. Dmand AI links Dr. Yamada to 1 more medical group.
Does Dr. Robert K. Yamada accept Medicare?
Yes. CMS data shows Dr. Yamada billed Medicare for 93 services in 2024, and Dr. Yamada accepts Medicare assignment.
How many Medicare patients does Dr. Robert K. Yamada see?
CMS counts 75 Medicare patients who saw Dr. Yamada in 2024, with an average age of 76.
What services does Dr. Robert K. Yamada bill to Medicare?
In 2024, Dr. Yamada's most billed Medicare services were office visit, established patient (99214), office visit, established patient (99213) and vaccine or vaccine administration (90677).
Where did Dr. Robert K. Yamada go to medical school?
Dr. Yamada graduated from University of California, San Francisco School of Medicine in 1985.
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What drugs does Dr. Robert K. Yamada prescribe most?
In 2024 Medicare Part D data, Dr. Yamada's most prescribed drugs by claims were Atorvastatin Calcium, Gabapentin and Losartan Potassium.
Has Dr. Robert K. Yamada received payments from drug or device companies?
CMS Open Payments shows $1,628 in general payments to Dr. Yamada from 13 companies from 2016 to 2025. The largest total came from Novo Nordisk Inc.
How long has Dr. Robert K. Yamada been practicing?
Dr. Yamada graduated from medical school in 1985, 41 years ago.
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