Dr. Thomas J. Mattimore, MD
- Medicare services, 2018
- 568
- Part D claims, 2018
- 3,429
- Publications
- 1
- Affiliated sites
- 1
- Insurance carriers
- 10
- Practice address
- 13768 Roswell Ave, Chino, CA 91710
- Practice phone
- Call (909) 591-8200
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
TotalCare Chino
Urgent Care Center · Chino, California
Find Dr. Mattimore'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 J. Mattimore is an internist in Chino, California
Dr. Mattimore practices at TotalCare Chino in Chino, California.
Dr. Mattimore's NPI, 1447285507, was assigned on July 11, 2006. Dr. Mattimore graduated from Georgetown University School Of Medicine in 1973. Dr. Mattimore's California license number on file is G61869.
- NPI
- 1447285507NPI Registry (opens in a new tab)
- NPI enumeration date
- July 11, 2006
- NPI status
- Active
- Practice phone
- (909) 591-8200
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Medical school graduation
- 1973
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Affiliation Data
Dr. Thomas J. Mattimore practices at TotalCare Chino in Chino, California
Dr. Mattimore's primary practice is TotalCare Chino, at 13768 Roswell Ave, Chino, CA 91710. The practice phone is (909) 591-8200.
- TotalCare Chino13768 Roswell Ave, Chino, CA 91710Phone(909) 591-8200
Source: Dmand AI Affiliation Data
Dr. Thomas J. Mattimore is affiliated with 1 site of care
Dr. Mattimore's primary practice is TotalCare Chino in Chino, California.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Thomas J. Mattimore's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Mattimore practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| TotalCare Chino | 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. Thomas J. Mattimore is one of 16,751 internists in California
Internal medicine is Dr. Mattimore's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dr. Mattimore is board certified in geriatric medicine by the American Board of Internal Medicine. Dmand AI has Dr. Mattimore's licenses on file in 3 states: California, North Carolina and Illinois.
Specialties and state licenses
- Internal medicine, CaliforniaPrimary
- North Carolina license
- Illinois license
Internists near Dr. Mattimore
Counts of internists 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 J. Mattimore billed Medicare for 568 services in 2018
CMS data shows 568 Medicare services from Dr. Mattimore across 5 procedure codes in 2018. Medicare paid $25,374 for them.
Dr. Mattimore's Medicare services by type, 2017 to 2018
- 2017
- 2018
- Office and hospital visits
- 2017: 1,3972018: 53262%
- Surgery
- 2017: 882018: 2176%
- Other services
- 2017: 1092018: 1586%
- Lab and pathology
- 2017: 1192018: 0100%
- Tests and treatments
- 2017: 1372018: 0100%
Where Dr. Mattimore's Medicare services took place, 2018
- In an office35663%
- In a facility21237%
Dr. Mattimore compared with the California median for internists, 2018
- Dr. Mattimore
- California median
- Medicare services
- 568vs 36157% above
- Part D claims
- 3,429vs 4218.1 times
Medians across 15,815 internists in California with Dmand AI profiles that report each measure.
Dr. Mattimore's most billed Medicare procedure codes, 2018
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. Mattimore?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Mattimore and other internists in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Thomas J. Mattimore's patients have a median age of 73
Across all payers, Dmand AI patient panel data puts Dr. Mattimore's median patient age at 73, with 43% women.
Dr. Mattimore's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 73
Patient panel by sex, all payers
- Women43%
- Men57%
Source: Dmand AI Patient Panel Data
Dr. Thomas J. Mattimore wrote 3,429 Medicare Part D claims in 2018
In 2018, Dr. Mattimore wrote 3,429 Medicare Part D claims. They cover 84 drugs, with $203,561 in total drug cost. In 2017, CMS named 5,992 claims across 132 drugs.
Dr. Mattimore's most prescribed drugs by claims, 2018
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, 2017 to 2018
- 2017
- 2018
- Claims for drugs CMS names
- 2017: 5,9922018: 3,42943%
Drugs named by CMS: 84 in 2018, 132 in 2017.
Source: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 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.
Dr. Thomas J. Mattimore has 1 publication on record
Dmand AI links 1 paper to Dr. Mattimore in 2012. Dr. Mattimore's most frequent co-author is Derjung Tarn.
Dr. Mattimore's most frequent co-authors
Recent publications by Dr. Mattimore
See who Dr. Mattimore researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Mattimore works with, so you can find a warm path to the right internists.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. Thomas J. Mattimore has 4 awards and honors on record
Dmand AI lists 4 awards for Dr. Mattimore, most recently CMS Stage 1 EHR in 2013.
Awards and honors for Dr. Mattimore
- 2013
- CMS Stage 1 EHR
- Top Doctors:LA Area
- 2012
- Top Doctors:Southern California
- 2000
- Town & Country Magazine: Top Doctors
Source: Dmand AI Professional Profile Data
Dr. Thomas J. Mattimore graduated from Georgetown University School Of Medicine
Dr. Mattimore graduated from Georgetown University School Of Medicine in 1973.
- Medical school
- Board certified in geriatric medicine
- Board certified in internal medicine
Source: Dmand AI Professional Profile Data
Dr. Thomas J. Mattimore accepts plans from 10 insurance carriers
Dr. Mattimore is in network with 10 carriers, including Blue Cross Blue Shield of Michigan, United Healthcare and HCSC. HMO plans come from the most carriers, 6. Check the plan with the practice before a visit.
- Blue Cross Blue Shield of Michigan
- United Healthcare
- HCSC
- Aetna
- Blue Cross Blue Shield of Massachusetts
- Regence Health Plans
- Alliant Health Plans
- Aspirus Health Plan
- +2 more carriersWith a free account
Plan types Dr. Mattimore accepts, by number of carriers
- HMO6
- PPO6
- Medicare5
- POS3
- EPO1
Source: Dmand AI Insurance Network Data
Sources for Dr. Thomas J. Mattimore'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 Data |
| Part D prescribing | Medicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab) |
| Publications, topics and co-authors | PubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage |
| Awards and committee roles | Dmand AI Professional Profile Data |
| 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 J. Mattimore
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 J. Mattimore's NPI number?
Dr. Thomas J. Mattimore's NPI number is 1447285507. It was assigned on July 11, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Thomas J. Mattimore?
Dr. Thomas J. Mattimore is an internist in Chino, California. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Dr. Thomas J. Mattimore practice?
Dr. Mattimore practices at 13768 Roswell Ave, Chino, CA 91710. Dr. Mattimore's primary practice is TotalCare Chino in Chino, California.
What is Dr. Thomas J. Mattimore's office phone number?
The practice phone on file for Dr. Mattimore is (909) 591-8200.
What is Dr. Thomas J. Mattimore's medical license number?
Dr. Mattimore's California license number on file is G61869, one of the licenses on file in 3 states.
Which states has Dr. Thomas J. Mattimore been licensed in?
Dmand AI has state licenses on file for Dr. Mattimore in California (1987 to 2025), North Carolina (2002 to 2004) and Illinois (1976 to 1984).
Does Dr. Thomas J. Mattimore accept Medicare?
Yes. CMS data shows Dr. Mattimore billed Medicare for 568 services in 2018.
Is Dr. Thomas J. Mattimore board certified?
Yes. Dr. Mattimore is board certified in geriatric medicine by the American Board of Internal Medicine.
What services does Dr. Thomas J. Mattimore bill to Medicare?
In 2018, Dr. Mattimore's most billed Medicare services were office visit, established patient (99214), office visit, established patient (99213) and office visit, established patient (99211).
Where did Dr. Thomas J. Mattimore go to medical school?
Dr. Mattimore graduated from Georgetown University School Of Medicine in 1973.
Show 5 more questionsShow fewer questions
What drugs does Dr. Thomas J. Mattimore prescribe most?
In 2018 Medicare Part D data, Dr. Mattimore's most prescribed drugs by claims were Atorvastatin Calcium, Amlodipine Besylate and Lisinopril.
How long has Dr. Thomas J. Mattimore been practicing?
Dr. Mattimore graduated from medical school in 1973, 53 years ago.
Does Dr. Thomas J. Mattimore do research?
Dmand AI links 1 publication to Dr. Mattimore.
Who does Dr. Thomas J. Mattimore publish with?
Dr. Mattimore's most frequent co-authors are Derjung Tarn (1 shared paper).
What insurance does Dr. Thomas J. Mattimore accept?
Dr. Mattimore is in network with 10 carriers, including Blue Cross Blue Shield of Michigan, United Healthcare and HCSC. HMO plans come from the most carriers, 6. Check the plan with the practice before a visit.
Selling to internal medicine practices?
See internists 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