Dr. Thomas A. Leighton, MD
- Medicare services, 2024
- 27
- Medicare patients, 2024
- 35
- Part D claims, 2024
- 289
- Hospital affiliations
- 2
- Industry payments
- $12
- Practice address
- 10800 Magnolia Avenue, Riverside, CA 92505
- Practice phone
- Call (951) 353-2000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Leighton'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. Thomas A. Leighton is an emergency medicine physician in Riverside, California
Dr. Leighton practices at Riverside Medical Center in Riverside, California, part of Kaiser Permanente.
Dr. Leighton's NPI, 1720155583, was assigned on November 29, 2006. Dr. Leighton graduated from Keck School of Medicine of USC in 1987. Dr. Leighton holds California license G64985.
- NPI
- 1720155583NPI Registry (opens in a new tab)
- NPI enumeration date
- November 29, 2006
- NPI status
- Active
- Practice phone
- (951) 353-2000
- 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 Affiliation Data
Dr. Thomas A. Leighton practices at Riverside Medical Center in Riverside, California
Dr. Leighton's primary practice is Riverside Medical Center, at 10800 Magnolia Avenue, Riverside, CA 92505 in Riverside County. The practice phone is (951) 353-2000.
- Riverside Medical Center10800 Magnolia Avenue, Riverside, CA 92505 · Riverside CountyPhone(951) 353-2000
Source: Dmand AI Affiliation Data
Dr. Thomas A. Leighton is affiliated with 2 sites of care and 1 medical group
Dr. Leighton's primary practice is Riverside Medical Center in Riverside, California, part of Kaiser Permanente. Dr. Leighton is also affiliated with Kaiser Permanente South Bay Medical Center. 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. Thomas A. Leighton's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Leighton practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Riverside Medical Center | 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 Kaiser Permanente and 6.2K+ hospitals, with verified contacts in the same login.
Dr. Thomas A. Leighton is one of 7,423 emergency medicine physicians in California
Emergency medicine is Dr. Leighton's primary specialty in the NPI Registry, under taxonomy code 207P00000X. Dr. Leighton is licensed in California.
Specialties and state licenses
- Emergency medicine, CaliforniaPrimary
Emergency medicine physicians near Dr. Leighton
Counts of emergency 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. Thomas A. Leighton billed Medicare for 27 services in 2024
CMS data shows 27 Medicare services from Dr. Leighton across 1 procedure code in 2024, for 35 Medicare patients. Medicare paid $2,026 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Leighton's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 282024: 274%
Dr. Leighton compared with the California median for emergency medicine physicians, 2024
- Dr. Leighton
- California median
- Medicare services
- 27vs 26590% below
- Medicare patients
- 35vs 24386% below
- Part D claims
- 162vs 622.6 times
Medians across 7,079 emergency medicine physicians in California with Dmand AI profiles that report each measure.
Dr. Leighton'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. Leighton?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Leighton and other emergency medicine physicians in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Thomas A. Leighton treated 35 Medicare patients in 2024, average age 70
CMS counts 35 Medicare patients who saw Dr. Leighton in 2024. The largest group is 65 to 74, with 14 patients. 69% of them have high blood pressure, and 66% have high cholesterol. 66% are also on Medicaid. Their average risk score is 1.93, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.
Across all payers, Dmand AI patient panel data puts Dr. Leighton's median patient age at 38, with 62% women.
Dr. Leighton's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Dr. Leighton's Medicare patients by sex, 2024
- Women1851%
- Men1749%
Chronic conditions among Dr. Leighton's Medicare patients, 2024
- High blood pressure69%
- High cholesterol66%
- Diabetes49%
- Arthritis46%
- Alzheimer's and dementia34%
- COPD31%
Share of Medicare patients with each condition. A patient can have several.
Dr. Leighton's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 38
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. Thomas A. Leighton wrote 289 Medicare Part D claims in 2024
In 2024, Dr. Leighton wrote 289 Medicare Part D claims for 194 patients. 91% of them were for generic drugs. CMS names the drug for 162 of them, across 7 drugs with 11 or more claims each, at $1,588 in total drug cost. In 2023, CMS named 179 claims across 8 drugs.
Dr. Leighton's Part D claims by kind of drug, 2024
- Generic262 claims91%
- Brand-name27 claims9%
Dr. Leighton'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. Leighton's Part D claims, 2024
- Opioids20%57 of 289 claims
- Antibiotics35%100 of 289 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: 1792024: 1629%
Drugs named by CMS: 7 in 2024, 8 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
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. Thomas A. Leighton received $12 in industry payments in 2018
CMS Open Payments shows 1 general payment to Dr. Leighton from 1 drug or device company in 2018. Food and beverage make up the largest share, 100% of the total. Smith & Nephew, Inc. paid the most, $12.
Companies that paid Dr. Leighton the most, 2018 to 2018
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Thomas A. Leighton graduated from Keck School of Medicine of USC
Dr. Leighton graduated from Keck School of Medicine of USC in 1987.
- Medical school
Source: Dmand AI Professional Profile Data
Dr. Thomas A. Leighton accepts plans from 1 insurance carrier
Dr. Leighton is in network with 1 carrier, including Kaiser Permanente. EPO plans come from the most carriers, 1. Check the plan with the practice before a visit.
- Kaiser Permanente
Plan types Dr. Leighton accepts, by number of carriers
- EPO1
- HMO1
- POS1
Source: Dmand AI Insurance Network Data
Sources for Dr. Thomas A. Leighton'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 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) |
| 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. Thomas A. Leighton
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. Thomas A. Leighton's NPI number?
Dr. Thomas A. Leighton's NPI number is 1720155583. It was assigned on November 29, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Thomas A. Leighton?
Dr. Thomas A. Leighton is an emergency medicine physician in Riverside, California. The primary specialty in the NPI Registry is Emergency Medicine Physician (taxonomy code 207P00000X).
Where does Dr. Thomas A. Leighton practice?
Dr. Leighton practices at 10800 Magnolia Avenue, Riverside, CA 92505. Dr. Leighton's primary practice is Riverside Medical Center in Riverside, California, part of Kaiser Permanente.
What is Dr. Thomas A. Leighton's office phone number?
The practice phone on file for Dr. Leighton is (951) 353-2000.
What is Dr. Thomas A. Leighton's medical license number?
Dr. Leighton holds California license G64985.
Which hospitals is Dr. Thomas A. Leighton affiliated with?
Dr. Leighton practices at Riverside Medical Center in Riverside, California. Dr. Leighton is also affiliated with Kaiser Permanente South Bay Medical Center.
What medical group is Dr. Thomas A. Leighton part of?
Dr. Leighton is linked to Southern California Permanente Medical Group.
Does Dr. Thomas A. Leighton accept Medicare?
Yes. CMS data shows Dr. Leighton billed Medicare for 27 services in 2024.
How many Medicare patients does Dr. Thomas A. Leighton see?
CMS counts 35 Medicare patients who saw Dr. Leighton in 2024, with an average age of 70.
What services does Dr. Thomas A. Leighton bill to Medicare?
In 2024, Dr. Leighton's most billed Medicare services were emergency department visit (99284).
Show 5 more questionsShow fewer questions
Where did Dr. Thomas A. Leighton go to medical school?
Dr. Leighton graduated from Keck School of Medicine of USC in 1987.
What drugs does Dr. Thomas A. Leighton prescribe most?
In 2024 Medicare Part D data, Dr. Leighton's most prescribed drugs by claims were Hydrocodone-Acetaminophen, Ciprofloxacin HCl and Cephalexin.
Has Dr. Thomas A. Leighton received payments from drug or device companies?
CMS Open Payments shows $12 in general payments to Dr. Leighton from 1 company from 2018 to 2018. The largest total came from Smith & Nephew, Inc.
How long has Dr. Thomas A. Leighton been practicing?
Dr. Leighton graduated from medical school in 1987, 39 years ago.
What insurance does Dr. Thomas A. Leighton accept?
Dr. Leighton is in network with 1 carrier, including Kaiser Permanente. EPO plans come from the most carriers, 1. Check the plan with the practice before a visit.
Selling to emergency medicine practices?
See emergency medicine physicians 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