Jonathan Chai
- Medicare services, 2024
- 5,335
- Medicare patients, 2024
- 539
- Part D claims, 2024
- 2,951
- Industry payments
- $213
- Affiliated sites
- 8
- Practice address
- 1339 York Avenue, New York, NY 10021
- Practice phone
- Call (646) 475-4800
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
ArchCare at Mary Manning Walsh Healthcare and Rehabilitation Center
Skilled Nursing Facility · New York, New York
Find Jonathan Chai'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.
Jonathan Chai is an internist in New York, New York
Jonathan Chai practices at ArchCare at Mary Manning Walsh Healthcare and Rehabilitation Center in New York, New York.
Jonathan Chai's NPI, 1063743169, was assigned on January 29, 2010. Jonathan Chai holds New York license 261327.
- NPI
- 1063743169NPI Registry (opens in a new tab)
- Medicare PAC ID
- 7315106598
- NPI enumeration date
- January 29, 2010
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (646) 475-4800
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 47
- Medical school graduation
- 2005
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Jonathan Chai practices at ArchCare at Mary Manning Walsh Healthcare and Rehabilitation Center in New York, New York
Jonathan Chai's primary practice is ArchCare at Mary Manning Walsh Healthcare and Rehabilitation Center, at 1339 York Avenue, New York, NY 10021 in New York County. The practice phone is (646) 475-4800.
- ArchCare at Mary Manning Walsh Healthcare and Rehabilitation Center1339 York Avenue, New York, NY 10021 · New York CountyPhone(646) 475-4800
Source: Dmand AI Affiliation Data
Jonathan Chai is affiliated with 8 sites of care and 4 medical groups
Jonathan Chai's primary practice is ArchCare at Mary Manning Walsh Healthcare and Rehabilitation Center in New York, New York. The medical group on file is Essen Medical Associates. Dmand AI also links Jonathan Chai to 4 more group practices and clinics, 3 medical groups, 2 home health agencies and 1 hospice, 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 Chai's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Jonathan Chai practices, 8 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| ArchCare at Mary Manning Walsh Healthcare and Rehabilitation Center | Available with a free account |
| +7 more sites and 3 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
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Jonathan Chai is one of 9,643 internists in New York
Internal medicine is Jonathan Chai's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dmand AI has Jonathan Chai's licenses on file in 2 states: New York and Arizona.
Specialties and state licenses
- Internal medicine, New YorkPrimary
- Arizona license
Internists near Jonathan Chai
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
Jonathan Chai billed Medicare for 5,335 services in 2024
CMS data shows 5,335 Medicare services from Jonathan Chai across 4 procedure codes in 2024, for 539 Medicare patients. Medicare paid $408,111 for them. Every service was in a facility, such as a hospital, rather than an office.
Jonathan Chai's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 3,6242024: 5,33547%
Jonathan Chai compared with the New York median for internists, 2024
- Jonathan Chai
- New York median
- Medicare services
- 5,335vs 42612.5 times
- Medicare patients
- 539vs 1583.4 times
- Part D claims
- 2,312vs 6223.7 times
Medians across 9,428 internists in New York with Dmand AI profiles that report each measure.
Jonathan Chai'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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Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Jonathan Chai treated 539 Medicare patients in 2024, average age 83
CMS counts 539 Medicare patients who saw Jonathan Chai in 2024. The largest group is 85 and over, with 233 patients. 75% of them have arthritis, and 75% have high blood pressure. 22% are also on Medicaid. Their average risk score is 2.21, 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 Chai's median patient age at 84, with 63% women.
Jonathan Chai's Medicare patients by age, 2024
Jonathan Chai's Medicare patients by sex, 2024
- Women32761%
- Men21239%
Chronic conditions among Jonathan Chai's Medicare patients, 2024
- Arthritis75%
- High blood pressure75%
- High cholesterol75%
- Ischemic heart disease66%
- Mood disorders57%
- Depression52%
- Anxiety45%
- Heart failure43%
Share of Medicare patients with each condition. A patient can have several.
Jonathan Chai's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 84
Patient panel by sex, all payers
- Women63%
- Men35%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Jonathan Chai wrote 2,951 Medicare Part D claims in 2024
In 2024, Jonathan Chai wrote 2,951 Medicare Part D claims for 350 patients. 84% of them were for generic drugs. CMS names the drug for 2,312 of them, across 58 drugs with 11 or more claims each, at $135,817 in total drug cost. In 2023, CMS named 1,267 claims across 41 drugs.
Jonathan Chai's Part D claims by kind of drug, 2024
- Generic2,487 claims84%
- Brand-name and other464 claims16%
Jonathan Chai'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 Jonathan Chai's Part D claims, 2024
- Opioids2%54 of 2,951 claims
- Antibiotics2%55 of 2,951 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: 1,2672024: 2,31282%
Drugs named by CMS: 58 in 2024, 41 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 Jonathan Chai takes part in Medicare
Jonathan Chai accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Removal of tissue: 1 to 10 procedures (CMS shows small counts as a range)
Sources: Doctors and Clinicians National Downloadable File (CMS); and Doctors and Clinicians Utilization Data (CMS)
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Jonathan Chai received $213 in industry payments from 2018 to 2024
CMS Open Payments shows 5 general payments to Jonathan Chai from 5 drug and device companies from 2018 to 2024. Food and beverage make up the largest share, 100% of the total. Boston Scientific Corporation paid the most, $109.
General payments to Jonathan Chai by program year, 2018 to 2024
Companies that paid Jonathan Chai the most, 2018 to 2024
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Jonathan Chai'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) |
| 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)Doctors and Clinicians Utilization Data (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 Chai
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 Chai's NPI number?
Jonathan Chai's NPI number is 1063743169. It was assigned on January 29, 2010, and it is active in the NPI Registry.
What does Jonathan Chai specialize in?
Jonathan Chai is an internist in New York, New York. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Jonathan Chai practice?
Jonathan Chai practices at 1339 York Avenue, New York, NY 10021. Jonathan Chai's primary practice is ArchCare at Mary Manning Walsh Healthcare and Rehabilitation Center in New York, New York. Dmand AI also links Jonathan Chai to 4 group practices and clinics, 3 medical groups, 2 home health agencies and 1 hospice.
What is Jonathan Chai's office phone number?
The practice phone on file for Jonathan Chai is (646) 475-4800.
What is Jonathan Chai's medical license number?
Jonathan Chai holds New York license 261327, one of the licenses on file in 2 states.
Which states has Jonathan Chai been licensed in?
Dmand AI has state licenses on file for Jonathan Chai in New York and Arizona.
What medical group is Jonathan Chai part of?
Jonathan Chai is linked to Essen Medical Associates. Dmand AI links Jonathan Chai to 3 more medical groups.
Does Jonathan Chai accept Medicare?
Yes. CMS data shows Jonathan Chai billed Medicare for 5,335 services in 2024, and Jonathan Chai accepts Medicare assignment.
How many Medicare patients does Jonathan Chai see?
CMS counts 539 Medicare patients who saw Jonathan Chai in 2024, with an average age of 83.
What services does Jonathan Chai bill to Medicare?
In 2024, Jonathan Chai's most billed Medicare services were nursing facility care (99308), nursing facility care (99309) and nursing facility care (99316).
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What drugs does Jonathan Chai prescribe most?
In 2024 Medicare Part D data, Jonathan Chai's most prescribed drugs by claims were Atorvastatin Calcium, Eliquis and Levothyroxine Sodium.
Has Jonathan Chai received payments from drug or device companies?
CMS Open Payments shows $213 in general payments to Jonathan Chai from 5 companies from 2018 to 2024. The largest total came from Boston Scientific Corporation.
How long has Jonathan Chai been practicing?
Jonathan Chai graduated from medical school in 2005, 21 years ago.
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