Dr. Jonathon Mark Weisz, MD
- Industry payments
- $541
- Affiliated sites
- 2
- Medical groups
- 2
- Insurance carriers
- 9
- State license
- 1
- Practice address
- 420 W Rowland St, Covina, CA 91723
- Practice phone
- Call (213) 623-2225
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Healthcare Partners Medical Group
Covina, California
Find Dr. Weisz'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. Jonathon Mark Weisz is a pediatrician in Covina, California
Dr. Weisz practices at Healthcare Partners Medical Group in Covina, California.
Dr. Weisz's NPI, 1841259298, was assigned on March 22, 2006. Dr. Weisz graduated from Keck School of Medicine of USC in 1991. Dr. Weisz holds California license G74937.
- NPI
- 1841259298NPI Registry (opens in a new tab)
- NPI enumeration date
- March 22, 2006
- NPI status
- Active
- Practice phone
- (213) 623-2225
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Medical school graduation
- 1991
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Practice Data
Dr. Jonathon Mark Weisz practices at Healthcare Partners Medical Group in Covina, California
Dr. Weisz's primary practice is Healthcare Partners Medical Group, at 420 W Rowland St, Covina, CA 91723 in Los Angeles County. The practice phone is (213) 623-2225.
- Healthcare Partners Medical Group420 W Rowland St, Covina, CA 91723 · Los Angeles CountyPhone(213) 623-2225
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Jonathon Mark Weisz is affiliated with 3 sites of care and 2 medical groups
Dr. Weisz's primary practice is Healthcare Partners Medical Group in Covina, California. The medical group on file is Optum - Downtown Los Angeles. Dmand AI also links Dr. Weisz to 2 more group practices and clinics and 1 medical group, 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 Dr. Jonathon Mark Weisz's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Weisz practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Healthcare Partners Medical Group | Available with a free account |
| +2 more sites and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Jonathon Mark Weisz is one of 8,236 pediatricians in California
Pediatrics is Dr. Weisz's primary specialty in the NPI Registry, under taxonomy code 208000000X. Dr. Weisz is board certified in pediatrics by the American Board of Pediatrics. Dr. Weisz is licensed in California.
Specialties and state licenses
- Pediatrics, CaliforniaPrimary
Pediatricians near Dr. Weisz
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. Jonathon Mark Weisz's patients have a median age of 13
Across all payers, Dmand AI patient panel data puts Dr. Weisz's median patient age at 13, with 45% women.
Dr. Weisz's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 13
Patient panel by sex, all payers
- Women45%
- Men54%
Source: Dmand AI Patient Panel Data
Dr. Jonathon Mark Weisz received $541 in industry payments from 2016 to 2020
CMS Open Payments shows 38 general payments to Dr. Weisz from 14 drug and device companies from 2016 to 2020. Food and beverage make up the largest share, 100% of the total. Merck Sharp & Dohme Corporation paid the most, $222.
General payments to Dr. Weisz by program year, 2016 to 2020
Companies that paid Dr. Weisz the most, 2016 to 2020
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Jonathon Mark Weisz graduated from Keck School of Medicine of USC
Dr. Weisz graduated from Keck School of Medicine of USC in 1991.
- Medical school
- Board certified in pediatrics
Source: Dmand AI Professional Profile Data
Dr. Jonathon Mark Weisz accepts plans from 9 insurance carriers
Dr. Weisz is in network with 9 carriers, including Aetna, Elevance and Blue Cross Blue Shield of Michigan. Medicare plans come from the most carriers, 7. Check the plan with the practice before a visit.
- Aetna
- Elevance
- Blue Cross Blue Shield of Michigan
- United Healthcare
- Blue Cross Blue Shield of Massachusetts
- HCSC
- Regence Health Plans
- Aspirus Health Plan
- +1 more carriersWith a free account
Plan types Dr. Weisz accepts, by number of carriers
- Medicare7
- PPO7
- POS5
- HMO4
- EPO3
Source: Dmand AI Insurance Network Data
Sources for Dr. Jonathon Mark Weisz'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 Data |
| 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. Jonathon Mark Weisz
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. Jonathon Mark Weisz's NPI number?
Dr. Jonathon Mark Weisz's NPI number is 1841259298. It was assigned on March 22, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Jonathon Mark Weisz?
Dr. Jonathon Mark Weisz is a pediatrician in Covina, California. The primary specialty in the NPI Registry is Pediatrics Physician (taxonomy code 208000000X).
Where does Dr. Jonathon Mark Weisz practice?
Dr. Weisz practices at 420 W Rowland St, Covina, CA 91723. Dr. Weisz's primary practice is Healthcare Partners Medical Group in Covina, California. Dmand AI also links Dr. Weisz to 2 group practices and clinics and 1 medical group.
What is Dr. Jonathon Mark Weisz's office phone number?
The practice phone on file for Dr. Weisz is (213) 623-2225.
What is Dr. Jonathon Mark Weisz's medical license number?
Dr. Weisz holds California license G74937.
What medical group is Dr. Jonathon Mark Weisz part of?
Dr. Weisz is linked to Optum - Downtown Los Angeles. Dmand AI links Dr. Weisz to 1 more medical group.
Is Dr. Jonathon Mark Weisz board certified?
Yes. Dr. Weisz is board certified in pediatrics by the American Board of Pediatrics.
Where did Dr. Jonathon Mark Weisz go to medical school?
Dr. Weisz graduated from Keck School of Medicine of USC in 1991.
Has Dr. Jonathon Mark Weisz received payments from drug or device companies?
CMS Open Payments shows $541 in general payments to Dr. Weisz from 14 companies from 2016 to 2020. The largest total came from Merck Sharp & Dohme Corporation.
How long has Dr. Jonathon Mark Weisz been practicing?
Dr. Weisz graduated from medical school in 1991, 35 years ago.
What insurance does Dr. Jonathon Mark Weisz accept?
Dr. Weisz is in network with 9 carriers, including Aetna, Elevance and Blue Cross Blue Shield of Michigan. Medicare plans come from the most carriers, 7. Check the plan with the practice before a visit.
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