Jonathan Y. Chap
- Medicare services, 2024
- 25
- Medicare patients, 2024
- 23
- MIPS score, 2024
- 79
- Hospital affiliations
- 4
- Industry payments
- $1,585
- Practice address
- 525 N Garfield Ave, Monterey Park, CA 91754
- Practice phone
- Call (626) 573-2222
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
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Jonathan Y. Chap is a physician assistant in Monterey Park, California
Jonathan Chap practices at Garfield Medical Center in Monterey Park, California, part of AHMC Healthcare.
Jonathan Chap's NPI, 1306510888, was assigned on August 6, 2021. Jonathan Chap holds California license 60039.
- NPI
- 1306510888NPI Registry (opens in a new tab)
- Medicare PAC ID
- 0446628465
- NPI enumeration date
- August 6, 2021
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (626) 573-2222
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 31
- Medical school graduation
- 2021
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Jonathan Y. Chap practices at Garfield Medical Center in Monterey Park, California
Jonathan Chap's primary practice is Garfield Medical Center, at 525 N Garfield Ave, Monterey Park, CA 91754 in Los Angeles County. The practice phone is (626) 573-2222.
- Garfield Medical Center525 N Garfield Ave, Monterey Park, CA 91754 · Los Angeles CountyPhone(626) 573-2222
Source: Dmand AI Affiliation Data
Jonathan Y. Chap is affiliated with 5 sites of care and 2 medical groups
Jonathan Chap's primary practice is Garfield Medical Center in Monterey Park, California, part of AHMC Healthcare. Jonathan Chap is also affiliated with UCI Health - Orange. The medical group on file is PIH Health Physicians. Dmand AI also links Jonathan Chap to 2 more hospitals, 1 group practice or clinic and 1 medical group, each named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Jonathan Y. Chap's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Jonathan Chap practices, 5 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Garfield Medical Center | Available with a free account |
| +4 more sites and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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Jonathan Y. Chap is one of 11,482 physician assistants in California
Physician assistant is Jonathan Chap's primary specialty in the NPI Registry, under taxonomy code 363A00000X. Jonathan Chap is licensed in California.
Specialties and state licenses
- Physician assistant, CaliforniaPrimary
Physician assistants near Jonathan Chap
Counts of physician assistants 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
Jonathan Y. Chap billed Medicare for 25 services in 2024
CMS data shows 25 Medicare services from Jonathan Chap across 2 procedure codes in 2024, for 23 Medicare patients. Medicare paid $2,331 for them. Every service was in a facility, such as a hospital, rather than an office.
Jonathan Chap compared with the California median for physician assistants, 2024
- Jonathan Chap
- California median
- Medicare services
- 25vs 20488% below
- Medicare patients
- 23vs 10578% below
Medians across 7,065 physician assistants in California with Dmand AI profiles that report each measure.
Jonathan Chap'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.
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Medicare shows one payer. Book a meeting to get commercial claims data for Jonathan Chap and other physician assistants in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Jonathan Y. Chap treated 23 Medicare patients in 2024, average age 68
CMS counts 23 Medicare patients who saw Jonathan Chap in 2024. The largest group is 65 to 74, with 12 patients. 75% of them have high blood pressure, and 75% have high cholesterol. Their average risk score is 3.40, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.
Across all payers, Dmand AI patient panel data puts Jonathan Chap's median patient age at 64, with 37% women.
Jonathan Chap's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Chronic conditions among Jonathan Chap's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Ischemic heart disease75%
- Diabetes70%
- Heart failure65%
- Chronic kidney disease57%
- Atrial fibrillation52%
Share of Medicare patients with each condition. A patient can have several.
Jonathan Chap's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 64
Patient panel by sex, all payers
- Women37%
- Men63%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Jonathan Y. Chap scored 79 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 79 out of 100 for Jonathan Chap for performance year 2024, reported as part of a group. Jonathan Chap accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Jonathan Chap's MIPS scores, performance year 2024
- 79of 100Final score
- 58.7of 100Quality
- 40of 100Improvement Activities
- 75of 100Cost
Each score is out of 100. The final score weighs the categories CMS scored for this clinician.
Sources: Doctors and Clinicians National Downloadable File (CMS); and Clinician Public Reporting: Overall MIPS Performance (CMS), 2024 data, released September 10, 2026
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Jonathan Y. Chap received $1,585 in industry payments from 2024 to 2025
CMS Open Payments shows 18 general payments to Jonathan Chap from 9 drug and device companies from 2024 to 2025. Food and beverage make up the largest share, 48% of the total. Intuitive Surgical, Inc. paid the most, $836.
General payments to Jonathan Chap by program year, 2024 to 2025
General payments to Jonathan Chap by kind, 2024 to 2025
- Food and beverage$76548%
- Travel and lodging$72045%
- Education$1006%
Companies that paid Jonathan Chap the most, 2024 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Jonathan Y. Chap'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) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab)Clinician Public Reporting: Overall MIPS Performance (CMS) (opens in a new tab) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| 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 Jonathan Y. Chap
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Jonathan Y. Chap's NPI number?
Jonathan Y. Chap's NPI number is 1306510888. It was assigned on August 6, 2021, and it is active in the NPI Registry.
What does Jonathan Y. Chap specialize in?
Jonathan Y. Chap is a physician assistant in Monterey Park, California. The primary specialty in the NPI Registry is Physician Assistant (taxonomy code 363A00000X).
Where does Jonathan Y. Chap practice?
Jonathan Chap practices at 525 N Garfield Ave, Monterey Park, CA 91754. Jonathan Chap's primary practice is Garfield Medical Center in Monterey Park, California, part of AHMC Healthcare. Dmand AI also links Jonathan Chap to 2 hospitals, 1 group practice or clinic and 1 medical group.
What is Jonathan Y. Chap's office phone number?
The practice phone on file for Jonathan Chap is (626) 573-2222.
What is Jonathan Y. Chap's medical license number?
Jonathan Chap holds California license 60039.
Which hospitals is Jonathan Y. Chap affiliated with?
Jonathan Chap practices at Garfield Medical Center in Monterey Park, California. Jonathan Chap is also affiliated with UCI Health - Orange. Dmand AI links Jonathan Chap to 2 more hospitals.
What medical group is Jonathan Y. Chap part of?
Jonathan Chap is linked to PIH Health Physicians. Dmand AI links Jonathan Chap to 1 more medical group.
Does Jonathan Y. Chap accept Medicare?
Yes. CMS data shows Jonathan Chap billed Medicare for 25 services in 2024, and Jonathan Chap accepts Medicare assignment.
What is Jonathan Y. Chap's MIPS score?
Jonathan Chap's MIPS final score for performance year 2024 is 79 out of 100, reported as part of a group.
How many Medicare patients does Jonathan Y. Chap see?
CMS counts 23 Medicare patients who saw Jonathan Chap in 2024, with an average age of 68.
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What services does Jonathan Y. Chap bill to Medicare?
In 2024, Jonathan Chap's most billed Medicare services were surgery: heart and blood vessels (33508) and surgery: heart and blood vessels (33533).
Has Jonathan Y. Chap received payments from drug or device companies?
CMS Open Payments shows $1,585 in general payments to Jonathan Chap from 9 companies from 2024 to 2025. The largest total came from Intuitive Surgical, Inc.
How long has Jonathan Y. Chap been practicing?
Jonathan Chap graduated from medical school in 2021, 5 years ago.
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