Dr. Jonathan Chock, MD
- Medicare services, 2024
- 33
- Medicare patients, 2024
- 38
- Part D claims, 2024
- 581
- Publications
- 1
- Hospital affiliations
- 1
- Practice address
- 9965 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
Kaiser Permanente - Fontana Medical Center
Fontana, California
Find Dr. Chock'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. Jonathan Chock is an emergency medicine physician in Fontana, California
Dr. Chock practices at Kaiser Permanente - Fontana Medical Center in Fontana, California.
Dr. Chock's NPI, 1770650624, was assigned on November 29, 2006. Dr. Chock graduated from OHSU School of Medicine in 1998. Dr. Chock holds California license A69620.
- NPI
- 1770650624NPI Registry (opens in a new tab)
- Medicare PAC ID
- 8628104650
- NPI enumeration date
- November 29, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (909) 427-5000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 54
- Medical school graduation
- 1998
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Jonathan Chock practices at Kaiser Permanente - Fontana Medical Center in Fontana, California
Dr. Chock's primary practice is Kaiser Permanente - Fontana Medical Center, at 9965 Sierra Ave, Fontana, CA 92335 in San Bernardino County. The practice phone is (909) 427-5000.
- Kaiser Permanente - Fontana Medical Center9965 Sierra Ave, Fontana, CA 92335 · San Bernardino CountyPhone(909) 427-5000
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Jonathan Chock is affiliated with 2 sites of care and 1 medical group
Dr. Chock's primary practice is Kaiser Permanente - Fontana Medical Center in Fontana, California. Dr. Chock is also affiliated with Fontana Medical Center. The medical group on file is Southern California Permanente Medical Group.
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. Jonathan Chock's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Chock practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Kaiser Permanente - Fontana 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 each health system and 6.2K+ hospitals, with verified contacts in the same login.
Dr. Jonathan Chock is one of 7,423 emergency medicine physicians in California
Emergency medicine is Dr. Chock's primary specialty in the NPI Registry, under taxonomy code 207P00000X. Dr. Chock is board certified in emergency medicine by the American Board of Emergency Medicine. Dr. Chock is licensed in California.
Specialties and state licenses
- Emergency medicine, CaliforniaPrimary
Emergency medicine physicians near Dr. Chock
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. Jonathan Chock billed Medicare for 33 services in 2024
CMS data shows 33 Medicare services from Dr. Chock across 2 procedure codes in 2024, for 38 Medicare patients. Medicare paid $2,670 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Chock's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 342024: 333%
Dr. Chock compared with the California median for emergency medicine physicians, 2024
- Dr. Chock
- California median
- Medicare services
- 33vs 26588% below
- Medicare patients
- 38vs 24384% below
- Part D claims
- 313vs 625.0 times
Medians across 7,079 emergency medicine physicians in California with Dmand AI profiles that report each measure.
Dr. Chock'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. Chock?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Chock 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. Jonathan Chock treated 38 Medicare patients in 2024, average age 64
CMS counts 38 Medicare patients who saw Dr. Chock in 2024. The largest group is under 65, with 16 patients. 68% of them have high blood pressure, and 47% have diabetes. Their average risk score is 2.63, 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. Chock's median patient age at 46, with 57% women.
Dr. Chock's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Dr. Chock's Medicare patients by sex, 2024
- Women2361%
- Men1539%
Chronic conditions among Dr. Chock's Medicare patients, 2024
- High blood pressure68%
- Diabetes47%
- High cholesterol45%
- Arthritis37%
- Depression32%
- Mood disorders32%
- Anxiety29%
Share of Medicare patients with each condition. A patient can have several.
Dr. Chock's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 46
Patient panel by sex, all payers
- Women57%
- Men43%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Jonathan Chock wrote 581 Medicare Part D claims in 2024
In 2024, Dr. Chock wrote 581 Medicare Part D claims for 338 patients. 90% of them were for generic drugs. CMS names the drug for 313 of them, across 13 drugs with 11 or more claims each, at $6,589 in total drug cost. In 2023, CMS named 299 claims across 13 drugs.
Dr. Chock's Part D claims by kind of drug, 2024
- Generic520 claims90%
- Brand-name and other61 claims10%
Dr. Chock'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. Chock's Part D claims, 2024
- Opioids12%68 of 581 claims
- Antibiotics30%174 of 581 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: 2992024: 3135%
Drugs named by CMS: 13 in 2024, 13 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
How Dr. Jonathan Chock takes part in Medicare
Dr. Chock accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
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. Jonathan Chock has 1 publication on record
Dmand AI links 1 paper to Dr. Chock.
Recent publications by Dr. Chock
See who Dr. Chock researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Chock works with, so you can find a warm path to the right emergency medicine physicians.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. Jonathan Chock graduated from OHSU School of Medicine
Dr. Chock graduated from OHSU School of Medicine in 1998.
- Medical school
- Board certified in emergency medicine
Source: Dmand AI Professional Profile Data
Dr. Jonathan Chock accepts plans from 1 insurance carrier
Dr. Chock 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. Chock accepts, by number of carriers
- EPO1
- HMO1
- POS1
Source: Dmand AI Insurance Network Data
Sources for Dr. Jonathan Chock'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 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) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (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 |
| 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. Jonathan Chock
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. Jonathan Chock's NPI number?
Dr. Jonathan Chock's NPI number is 1770650624. It was assigned on November 29, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Jonathan Chock?
Dr. Jonathan Chock is an emergency medicine physician in Fontana, California. The primary specialty in the NPI Registry is Emergency Medicine Physician (taxonomy code 207P00000X).
Where does Dr. Jonathan Chock practice?
Dr. Chock practices at 9965 Sierra Ave, Fontana, CA 92335. Dr. Chock's primary practice is Kaiser Permanente - Fontana Medical Center in Fontana, California.
What is Dr. Jonathan Chock's office phone number?
The practice phone on file for Dr. Chock is (909) 427-5000.
What is Dr. Jonathan Chock's medical license number?
Dr. Chock holds California license A69620.
Which hospitals is Dr. Jonathan Chock affiliated with?
Dr. Chock is affiliated with Fontana Medical Center.
What medical group is Dr. Jonathan Chock part of?
Dr. Chock is linked to Southern California Permanente Medical Group.
Does Dr. Jonathan Chock accept Medicare?
Yes. CMS data shows Dr. Chock billed Medicare for 33 services in 2024, and Dr. Chock accepts Medicare assignment.
How many Medicare patients does Dr. Jonathan Chock see?
CMS counts 38 Medicare patients who saw Dr. Chock in 2024, with an average age of 64.
Is Dr. Jonathan Chock board certified?
Yes. Dr. Chock is board certified in emergency medicine by the American Board of Emergency Medicine.
Show 6 more questionsShow fewer questions
What services does Dr. Jonathan Chock bill to Medicare?
In 2024, Dr. Chock's most billed Medicare services were emergency department visit (99284) and emergency department visit (99285).
Where did Dr. Jonathan Chock go to medical school?
Dr. Chock graduated from OHSU School of Medicine in 1998.
What drugs does Dr. Jonathan Chock prescribe most?
In 2024 Medicare Part D data, Dr. Chock's most prescribed drugs by claims were Cefpodoxime Proxetil, Prednisone and Hydrocodone-Acetaminophen.
How long has Dr. Jonathan Chock been practicing?
Dr. Chock graduated from medical school in 1998, 28 years ago.
Does Dr. Jonathan Chock do research?
Dmand AI links 1 publication to Dr. Chock.
What insurance does Dr. Jonathan Chock accept?
Dr. Chock 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