Dr. Robert C. Rosenquist, MD
- Part D claims, 2024
- 344
- Hospital affiliations
- 1
- Industry payments
- $251
- Medical group
- 1
- State license
- 1
- Practice address
- 9961 Sierra Ave, Fontana, CA 92335
- Practice phone
- Call (909) 427-5000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Rosenquist'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 C. Rosenquist is an ophthalmologist in Fontana, California
Dr. Rosenquist practices at Fontana Medical Center in Fontana, California, part of Kaiser Permanente.
Dr. Rosenquist's NPI, 1245307065, was assigned on November 29, 2006. Dr. Rosenquist graduated from Loma Linda University School of Medicine in 1977. Dr. Rosenquist holds California license G54692.
- NPI
- 1245307065NPI Registry (opens in a new tab)
- NPI enumeration date
- November 29, 2006
- NPI status
- Active
- Practice phone
- (909) 427-5000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 75
- Medical school graduation
- 1977
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Affiliation Data
Dr. Robert C. Rosenquist practices at Fontana Medical Center in Fontana, California
Dr. Rosenquist's primary practice is Fontana Medical Center, at 9961 Sierra Ave, Fontana, CA 92335 in San Bernardino County. The practice phone is (909) 427-5000.
- Fontana Medical Center9961 Sierra Ave, Fontana, CA 92335 · San Bernardino CountyPhone(909) 427-5000
Source: Dmand AI Affiliation Data
Dr. Robert C. Rosenquist is affiliated with 1 site of care and 1 medical group
Dr. Rosenquist's primary practice is Fontana Medical Center in Fontana, California, part of Kaiser Permanente. The medical group on file is Southern California Permanente Medical Group.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Robert C. Rosenquist's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Rosenquist practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Fontana Medical Center | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Robert C. Rosenquist is one of 2,621 ophthalmologists in California
Ophthalmology is Dr. Rosenquist's primary specialty in the NPI Registry, under taxonomy code 207W00000X. Dr. Rosenquist is licensed in California.
Specialties and state licenses
- Ophthalmology, CaliforniaPrimary
Ophthalmologists near Dr. Rosenquist
Counts of ophthalmologists 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 C. Rosenquist's patients have a median age of 88
Across all payers, Dmand AI patient panel data puts Dr. Rosenquist's median patient age at 88, with 0% women.
Dr. Rosenquist's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 88
Patient panel by sex, all payers
- Women0%
- Men100%
Source: Dmand AI Patient Panel Data
Dr. Robert C. Rosenquist wrote 344 Medicare Part D claims in 2024
In 2024, Dr. Rosenquist wrote 344 Medicare Part D claims for 137 patients. 94% of them were for generic drugs. CMS names the drug for 312 of them, across 5 drugs with 11 or more claims each, at $5,306 in total drug cost. In 2023, CMS named 1,127 claims across 10 drugs.
Dr. Rosenquist's Part D claims by kind of drug, 2024
- Generic324 claims94%
- Brand-name20 claims6%
Dr. Rosenquist'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, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 1,1272024: 31272%
Drugs named by CMS: 5 in 2024, 10 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
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Dr. Robert C. Rosenquist received $251 in industry payments from 2016 to 2018
CMS Open Payments shows 3 general payments to Dr. Rosenquist from 3 drug and device companies from 2016 to 2018. Food and beverage make up the largest share, 100% of the total. Allergan Inc. paid the most, $125.
General payments to Dr. Rosenquist by program year, 2016 to 2018
Companies that paid Dr. Rosenquist the most, 2016 to 2018
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Robert C. Rosenquist graduated from Loma Linda University School of Medicine
Dr. Rosenquist graduated from Loma Linda University School of Medicine in 1977.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Robert C. Rosenquist'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 | Dmand AI Affiliation Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation DataDmand AI Org Hierarchy Data |
| 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 |
| 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 C. Rosenquist
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 C. Rosenquist's NPI number?
Dr. Robert C. Rosenquist's NPI number is 1245307065. It was assigned on November 29, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Robert C. Rosenquist?
Dr. Robert C. Rosenquist is an ophthalmologist in Fontana, California. The primary specialty in the NPI Registry is Ophthalmology Physician (taxonomy code 207W00000X).
Where does Dr. Robert C. Rosenquist practice?
Dr. Rosenquist practices at 9961 Sierra Ave, Fontana, CA 92335. Dr. Rosenquist's primary practice is Fontana Medical Center in Fontana, California, part of Kaiser Permanente.
What is Dr. Robert C. Rosenquist's office phone number?
The practice phone on file for Dr. Rosenquist is (909) 427-5000.
What is Dr. Robert C. Rosenquist's medical license number?
Dr. Rosenquist holds California license G54692.
Which hospitals is Dr. Robert C. Rosenquist affiliated with?
Dr. Rosenquist practices at Fontana Medical Center in Fontana, California.
What medical group is Dr. Robert C. Rosenquist part of?
Dr. Rosenquist is linked to Southern California Permanente Medical Group.
Where did Dr. Robert C. Rosenquist go to medical school?
Dr. Rosenquist graduated from Loma Linda University School of Medicine in 1977.
What drugs does Dr. Robert C. Rosenquist prescribe most?
In 2024 Medicare Part D data, Dr. Rosenquist's most prescribed drugs by claims were Latanoprost, Timolol Maleate and Brimonidine Tartrate.
Has Dr. Robert C. Rosenquist received payments from drug or device companies?
CMS Open Payments shows $251 in general payments to Dr. Rosenquist from 3 companies from 2016 to 2018. The largest total came from Allergan Inc.
How long has Dr. Robert C. Rosenquist been practicing?
Dr. Rosenquist graduated from medical school in 1977, 49 years ago.
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