Thomas Francis Determan
- Medicare patients, 2024
- 700
- Part D claims, 2024
- 233
- Industry payments
- $16
- Affiliated sites
- 2
- Medical groups
- 2
- Practice address
- 3800 Kilroy Airport Way, Long Beach, CA 90806
- Practice phone
- Call (928) 580-6356
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Ocs
Long Beach, California
Find Thomas Determan'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.
Thomas Francis Determan is an optometrist in Long Beach, California
Thomas Determan practices at Ocs in Long Beach, California.
Thomas Determan's NPI, 1508966805, was assigned on September 25, 2006. Thomas Determan graduated from Southern California College of Optometry in 1987. Thomas Determan holds Arizona license OD 786.
- NPI
- 1508966805NPI Registry (opens in a new tab)
- NPI enumeration date
- September 25, 2006
- NPI status
- Active
- Practice phone
- (928) 580-6356
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 65
- Medical school graduation
- 1987
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Practice Data
Thomas Francis Determan practices at Ocs in Long Beach, California
Thomas Determan's primary practice is Ocs, at 3800 Kilroy Airport Way, Long Beach, CA 90806 in Los Angeles County. The practice phone is (928) 580-6356.
- Ocs3800 Kilroy Airport Way, Long Beach, CA 90806 · Los Angeles CountyPhone(928) 580-6356
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Thomas Francis Determan is affiliated with 3 sites of care and 2 medical groups
Thomas Determan's primary practice is Ocs in Long Beach, California. Dmand AI also links Thomas Determan to 2 group practices and clinics and 2 medical groups, 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 Thomas Francis Determan's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Thomas Determan practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Ocs | Available with a free account |
| +2 more sites and 2 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.
Thomas Francis Determan is one of 7,206 optometrists in California
Optometrist is Thomas Determan's primary specialty in the NPI Registry, under taxonomy code 152W00000X. Thomas Determan is licensed in Arizona.
Specialties and state licenses
- Optometrist, ArizonaPrimary
Optometrists near Thomas Determan
Counts of optometrists 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
Thomas Francis Determan treated 700 Medicare patients in 2024, average age 77
CMS counts 700 Medicare patients who saw Thomas Determan in 2024. The largest group is 65 to 74, with 292 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 2% are also on Medicaid. Their average risk score is 1.01, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Thomas Determan's median patient age at 41, with 57% women.
Thomas Determan's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Thomas Determan's Medicare patients by sex, 2024
- Women41159%
- Men28941%
Chronic conditions among Thomas Determan's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis41%
- Diabetes30%
- Chronic kidney disease27%
- Ischemic heart disease27%
- Osteoporosis17%
- Atrial fibrillation16%
Share of Medicare patients with each condition. A patient can have several.
Thomas Determan's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 41
Patient panel by sex, all payers
- Women57%
- Men42%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Thomas Francis Determan wrote 233 Medicare Part D claims in 2024
In 2024, Thomas Determan wrote 233 Medicare Part D claims for 102 patients. 63% of them were for generic drugs.
Thomas Determan's Part D claims by kind of drug, 2024
- Generic146 claims63%
- Brand-name87 claims37%
Source: Medicare Part D Prescribers - by Provider (CMS), 2024 data
Thomas Francis Determan scored 0 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 0 out of 100 for Thomas Determan for performance year 2024, reported individually.
Thomas Determan's MIPS scores, performance year 2024
- 0of 100Final score
- 0of 100Quality
- 0of 100Improvement Activities
- 0of 100Cost
Each score is out of 100. The final score weighs the categories CMS scored for this clinician.
Source: Clinician Public Reporting: Overall MIPS Performance (CMS), 2024 data, released September 10, 2026
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.
Thomas Francis Determan received $16 in industry payments in 2025
CMS Open Payments shows 1 general payment to Thomas Determan from 1 drug or device company in 2025. Food and beverage make up the largest share, 100% of the total. Bausch & Lomb Americas Inc. paid the most, $16.
Companies that paid Thomas Determan the most, 2025 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Thomas Francis Determan graduated from Southern California College of Optometry
Thomas Determan graduated from Southern California College of Optometry in 1987.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Thomas Francis Determan'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 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 (CMS) (opens in a new tab) |
| MIPS scores, telehealth, assignment and procedure percentiles | Clinician Public Reporting: Overall MIPS Performance (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 Thomas Francis Determan
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Thomas Francis Determan's NPI number?
Thomas Francis Determan's NPI number is 1508966805. It was assigned on September 25, 2006, and it is active in the NPI Registry.
What does Thomas Francis Determan specialize in?
Thomas Francis Determan is an optometrist in Long Beach, California. The primary specialty in the NPI Registry is Optometrist (taxonomy code 152W00000X).
Where does Thomas Francis Determan practice?
Thomas Determan practices at 3800 Kilroy Airport Way, Long Beach, CA 90806. Thomas Determan's primary practice is Ocs in Long Beach, California. Dmand AI also links Thomas Determan to 2 group practices and clinics and 2 medical groups.
What is Thomas Francis Determan's office phone number?
The practice phone on file for Thomas Determan is (928) 580-6356.
What is Thomas Francis Determan's medical license number?
Thomas Determan holds Arizona license OD 786.
What is Thomas Francis Determan's MIPS score?
Thomas Determan's MIPS final score for performance year 2024 is 0 out of 100, reported individually.
How many Medicare patients does Thomas Francis Determan see?
CMS counts 700 Medicare patients who saw Thomas Determan in 2024, with an average age of 77.
Where did Thomas Francis Determan go to medical school?
Thomas Determan graduated from Southern California College of Optometry in 1987.
Has Thomas Francis Determan received payments from drug or device companies?
CMS Open Payments shows $16 in general payments to Thomas Determan from 1 company from 2025 to 2025. The largest total came from Bausch & Lomb Americas Inc.
How long has Thomas Francis Determan been practicing?
Thomas Determan graduated from medical school in 1987, 39 years ago.
Selling to optometrist practices?
See optometrists 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