Dr. Robert Daniel Kay, MD
- Medicare services, 2024
- 100
- Medicare patients, 2024
- 127
- Part D claims, 2024
- 124
- Hospital affiliations
- 1
- Industry payments
- $4,984
- Practice address
- 9961 Sierra Ave, Fontana, CA 92335
- Practice phone
- Call (909) 427-3910
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Fontana Medical Center
Fontana, California
Find Dr. Kay'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 Daniel Kay is an orthopedic surgeon in Fontana, California
Dr. Kay practices at Fontana Medical Center in Fontana, California.
Dr. Kay's NPI, 1912495656, was assigned on April 27, 2018. Dr. Kay graduated from University of Arizona College of Medicine in 2018. Dr. Kay holds Massachusetts license 1013142.
- NPI
- 1912495656NPI Registry (opens in a new tab)
- Medicare PAC ID
- 5991167934
- NPI enumeration date
- April 27, 2018
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (909) 427-3910
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 34
- Medical school graduation
- 2018
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Robert Daniel Kay practices at Fontana Medical Center in Fontana, California
Dr. Kay's primary practice is Fontana Medical Center, at 9961 Sierra Ave, Fontana, CA 92335 in San Bernardino County. The practice phone is (909) 427-3910.
- Fontana Medical Center9961 Sierra Ave, Fontana, CA 92335 · San Bernardino CountyPhone(909) 427-3910
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Robert Daniel Kay is affiliated with 2 sites of care and 4 medical groups
Dr. Kay's primary practice is Fontana Medical Center in Fontana, California. Dr. Kay is also affiliated with Massachusetts General Hospital. The medical group on file is Southern California Permanente Medical Group. Dmand AI also links Dr. Kay to 3 more medical groups, each named with a free account.
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Robert Daniel Kay's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Kay practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Fontana Medical Center | Available with a free account |
| +1 more site and 3 medical groups | 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. Robert Daniel Kay is one of 2,056 orthopedic surgeons in California
Orthopaedic surgery is Dr. Kay's primary specialty in the NPI Registry, under taxonomy code 207X00000X. Dr. Kay is licensed in Massachusetts.
Specialties and state licenses
- Orthopaedic surgery, MassachusettsPrimary
Orthopedic surgeons near Dr. Kay
Counts of orthopedic surgeons 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 Daniel Kay billed Medicare for 100 services in 2024
CMS data shows 100 Medicare services from Dr. Kay across 2 procedure codes in 2024, for 127 Medicare patients. Medicare paid $17,158 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Kay's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Surgery
- 2023: 572024: 10075%
Dr. Kay compared with the California median for orthopedic surgeons, 2024
- Dr. Kay
- California median
- Medicare services
- 100vs 68385% below
- Medicare patients
- 127vs 21541% below
- Part D claims
- 88vs 7026% above
Medians across 1,844 orthopedic surgeons in California with Dmand AI profiles that report each measure.
Dr. Kay'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.
Need commercial claims for Dr. Kay?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Kay and other orthopedic surgeons in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Robert Daniel Kay treated 127 Medicare patients in 2024, average age 74
CMS counts 127 Medicare patients who saw Dr. Kay in 2024. The largest group is 65 to 74, with 65 patients. 75% of them have arthritis, and 75% have high blood pressure. Their average risk score is 0.95, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Kay's median patient age at 66, with 62% women.
Dr. Kay's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Dr. Kay's Medicare patients by sex, 2024
- Women7257%
- Men5543%
Chronic conditions among Dr. Kay's Medicare patients, 2024
- Arthritis75%
- High blood pressure75%
- High cholesterol75%
- Anxiety32%
- Osteoporosis27%
- Mood disorders25%
- Ischemic heart disease24%
- Depression22%
Share of Medicare patients with each condition. A patient can have several.
Dr. Kay's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 66
Patient panel by sex, all payers
- Women62%
- Men38%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Robert Daniel Kay wrote 124 Medicare Part D claims in 2024
In 2024, Dr. Kay wrote 124 Medicare Part D claims for 51 patients. 98% of them were for generic drugs. CMS names the drug for 88 of them, across 4 drugs with 11 or more claims each, at $572 in total drug cost. In 2023, CMS named 18 claims across 1 drug.
Dr. Kay's Part D claims by kind of drug, 2024
- Generic121 claims98%
- Brand-name and other3 claims2%
Dr. Kay'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. Kay's Part D claims, 2024
- Opioids27%34 of 124 claims
- Antibiotics15%18 of 124 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: 182024: 88389%
Drugs named by CMS: 4 in 2024, 1 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 Daniel Kay takes part in Medicare
Dr. Kay accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Hip replacement: 1 to 10 procedures (CMS shows small counts as a range)
Sources: Doctors and Clinicians National Downloadable File (CMS); and Doctors and Clinicians Utilization Data (CMS)
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. Robert Daniel Kay received $4,984 in industry payments from 2019 to 2025
CMS Open Payments shows 50 general payments to Dr. Kay from 7 drug and device companies from 2019 to 2025. Food and beverage make up the largest share, 70% of the total. Stryker Corporation paid the most, $2,440.
General payments to Dr. Kay by program year, 2019 to 2025
General payments to Dr. Kay by kind, 2019 to 2025
- Food and beverage$3,50370%
- Education$1,45829%
- Travel and lodging$230%
Companies that paid Dr. Kay the most, 2019 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Robert Daniel Kay graduated from University of Arizona College of Medicine
Dr. Kay graduated from University of Arizona College of Medicine in 2018.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Robert Daniel Kay'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 DataDmand AI Org Hierarchy 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)Doctors and Clinicians Utilization Data (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 Daniel Kay
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 Daniel Kay's NPI number?
Dr. Robert Daniel Kay's NPI number is 1912495656. It was assigned on April 27, 2018, and it is active in the NPI Registry.
What kind of doctor is Dr. Robert Daniel Kay?
Dr. Robert Daniel Kay is an orthopedic surgeon in Fontana, California. The primary specialty in the NPI Registry is Orthopaedic Surgery Physician (taxonomy code 207X00000X).
Where does Dr. Robert Daniel Kay practice?
Dr. Kay practices at 9961 Sierra Ave, Fontana, CA 92335. Dr. Kay's primary practice is Fontana Medical Center in Fontana, California. Dmand AI also links Dr. Kay to 3 medical groups.
What is Dr. Robert Daniel Kay's office phone number?
The practice phone on file for Dr. Kay is (909) 427-3910.
What is Dr. Robert Daniel Kay's medical license number?
Dr. Kay holds Massachusetts license 1013142.
Which hospitals is Dr. Robert Daniel Kay affiliated with?
Dr. Kay is affiliated with Massachusetts General Hospital.
What medical group is Dr. Robert Daniel Kay part of?
Dr. Kay is linked to Southern California Permanente Medical Group. Dmand AI links Dr. Kay to 3 more medical groups.
Does Dr. Robert Daniel Kay accept Medicare?
Yes. CMS data shows Dr. Kay billed Medicare for 100 services in 2024, and Dr. Kay accepts Medicare assignment.
How many Medicare patients does Dr. Robert Daniel Kay see?
CMS counts 127 Medicare patients who saw Dr. Kay in 2024, with an average age of 74.
What services does Dr. Robert Daniel Kay bill to Medicare?
In 2024, Dr. Kay's most billed Medicare services were surgery: bones and joints (27447) and surgery: bones and joints (27130).
Show 4 more questionsShow fewer questions
Where did Dr. Robert Daniel Kay go to medical school?
Dr. Kay graduated from University of Arizona College of Medicine in 2018.
What drugs does Dr. Robert Daniel Kay prescribe most?
In 2024 Medicare Part D data, Dr. Kay's most prescribed drugs by claims were Oxycodone HCl, Naproxen and Ondansetron HCl.
Has Dr. Robert Daniel Kay received payments from drug or device companies?
CMS Open Payments shows $4,984 in general payments to Dr. Kay from 7 companies from 2019 to 2025. The largest total came from Stryker Corporation.
How long has Dr. Robert Daniel Kay been practicing?
Dr. Kay graduated from medical school in 2018, 8 years ago.
Selling to orthopaedic surgery practices?
See orthopedic surgeons 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