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Dr. John Matthew Chase, MD
NPI1194084012
- Part D claims, 2024
- 771
- Publications
- 5
- Hospital affiliations
- 1
- Industry payments
- $221
- Medical group
- 1
- 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
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Dr. John Matthew Chase is a pediatrician in Fontana, California
Dr. Chase practices at Fontana Medical Center in Fontana, California.
Dr. Chase's NPI, 1194084012, was assigned on May 12, 2012. Dr. Chase graduated from UC Irvine School of Medicine in 2009. Dr. Chase holds California license A115299.
NPI and contact details
- NPI
- 1194084012NPI Registry (opens in a new tab)
- NPI enumeration date
- May 12, 2012
- NPI status
- Active
- Practice phone
- (909) 427-3910
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 43
- Medical school graduation
- 2009
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Practice Data
Dr. John Matthew Chase practices at Fontana Medical Center in Fontana, California
Dr. Chase'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. John Matthew Chase is affiliated with 2 sites of care and 1 medical group
Dr. Chase's primary practice is Fontana Medical Center in Fontana, California. Dr. Chase is also affiliated with Kaiser Permanente Los Angeles Medical Center. The medical group on file is Southern California Permanente Medical Group.
Fontana Medical CenterPrimary
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. John Matthew Chase's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Chase 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 affiliated site | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. John Matthew Chase is one of 8,236 pediatricians in California
Pediatrics is Dr. Chase's primary specialty in the NPI Registry, under taxonomy code 208000000X. Dr. Chase is board certified in allergy & immunology by the American Board of Allergy and Immunology. Dr. Chase is licensed in California.
Specialties and state licenses
- Pediatrics, CaliforniaPrimary
Pediatricians near Dr. Chase
Counts of pediatricians 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. John Matthew Chase's patients have a median age of 29
Across all payers, Dmand AI patient panel data puts Dr. Chase's median patient age at 29, with 65% women.
Dr. Chase's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 29
Patient panel by sex, all payers
- Women65%
- Men35%
Source: Dmand AI Patient Panel Data
Dr. John Matthew Chase wrote 771 Medicare Part D claims in 2024
In 2024, Dr. Chase wrote 771 Medicare Part D claims for 216 patients. 80% of them were for generic drugs. CMS names the drug for 702 of them, across 14 drugs with 11 or more claims each, at $288,189 in total drug cost. In 2023, CMS named 596 claims across 12 drugs.
Part D claims, 2024771
Drugs named by CMS14
Total drug cost$288,189
Part D patients216
Dr. Chase's Part D claims by kind of drug, 2024
- Generic616 claims80%
- Brand-name155 claims20%
Dr. Chase'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: 5962024: 70218%
Drugs named by CMS: 14 in 2024, 12 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. John Matthew Chase has 5 publications on record
Dmand AI links 5 papers to Dr. Chase, published from 2010 to 2013. 2012 was the busiest year, with 2. The most frequent topics are Pregnancy Outcome. Dr. Chase's most frequent co-authors are David Elihu Greenberg, MD, Joseph August Church, MD and Marilyn Jones, MD.
Papers5
Years published2010 to 2013
Dr. Chase's papers by year, 2010 to 2013
Topics Dr. Chase writes about most
- Pregnancy Outcome
Dr. Chase's most frequent co-authors
- David Elihu Greenberg, MD2 shared papers
- Joseph August Church, MD1 shared paper
- Marilyn Jones, MD1 shared paper
Recent publications by Dr. Chase
Air PollutionEnvironmentHealth Status Disparities
CitiesInfant, Small for Gestational AgeOregon
See who Dr. Chase researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Chase works with, so you can find a warm path to the right pediatricians.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. John Matthew Chase received $221 in industry payments from 2017 to 2019
CMS Open Payments shows 2 general payments to Dr. Chase from 2 drug and device companies from 2017 to 2019. Food and beverage make up the largest share, 100% of the total. Sanofi and Genzyme US Companies paid the most, $122.
General payments to Dr. Chase by program year, 2017 to 2019
Companies that paid Dr. Chase the most, 2017 to 2019
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. John Matthew Chase graduated from UC Irvine School of Medicine
Dr. Chase graduated from UC Irvine School of Medicine in 2009.
- Medical school
- Board certified in allergy & immunology
- Board certified in pediatrics
Source: Dmand AI Professional Profile Data
Dr. John Matthew Chase accepts plans from 1 insurance carrier
Dr. Chase 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. Chase accepts, by number of carriers
- EPO1
- HMO1
- POS1
Source: Dmand AI Insurance Network Data
Sources for Dr. John Matthew Chase'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 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) |
| Publications, topics and co-authors | PubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage |
| 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. John Matthew Chase
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. John Matthew Chase's NPI number?
Dr. John Matthew Chase's NPI number is 1194084012. It was assigned on May 12, 2012, and it is active in the NPI Registry.
What kind of doctor is Dr. John Matthew Chase?
Dr. John Matthew Chase is a pediatrician in Fontana, California. The primary specialty in the NPI Registry is Pediatrics Physician (taxonomy code 208000000X).
Where does Dr. John Matthew Chase practice?
Dr. Chase practices at 9961 Sierra Ave, Fontana, CA 92335. Dr. Chase's primary practice is Fontana Medical Center in Fontana, California.
What is Dr. John Matthew Chase's office phone number?
The practice phone on file for Dr. Chase is (909) 427-3910.
What is Dr. John Matthew Chase's medical license number?
Dr. Chase holds California license A115299.
Which hospitals is Dr. John Matthew Chase affiliated with?
Dr. Chase is affiliated with Kaiser Permanente Los Angeles Medical Center.
What medical group is Dr. John Matthew Chase part of?
Dr. Chase is linked to Southern California Permanente Medical Group.
Is Dr. John Matthew Chase board certified?
Yes. Dr. Chase is board certified in allergy & immunology by the American Board of Allergy and Immunology.
Where did Dr. John Matthew Chase go to medical school?
Dr. Chase graduated from UC Irvine School of Medicine in 2009.
What drugs does Dr. John Matthew Chase prescribe most?
In 2024 Medicare Part D data, Dr. Chase's most prescribed drugs by claims were Azelastine HCl, Ipratropium Bromide and Montelukast Sodium.
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Has Dr. John Matthew Chase received payments from drug or device companies?
CMS Open Payments shows $221 in general payments to Dr. Chase from 2 companies from 2017 to 2019. The largest total came from Sanofi and Genzyme US Companies.
How long has Dr. John Matthew Chase been practicing?
Dr. Chase graduated from medical school in 2009, 17 years ago.
Does Dr. John Matthew Chase do research?
Dmand AI links 5 publications to Dr. Chase, published from 2010 to 2013.
Who does Dr. John Matthew Chase publish with?
Dr. Chase's most frequent co-authors are David Elihu Greenberg, MD (2 shared papers), Joseph August Church, MD (1 shared paper) and Marilyn Jones, MD (1 shared paper).
What insurance does Dr. John Matthew Chase accept?
Dr. Chase 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.
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