Dr. Ryan H. Chan, MD
- Medicare services, 2024
- 43
- Medicare patients, 2024
- 69
- Part D claims, 2024
- 114
- Publications
- 7
- MIPS score, 2024
- 92
- Practice address
- 622 W 168th St, New York, NY 10032
- Practice phone
- Call (212) 297-4255
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Columbia University Irving Medical Center
New York, New York
Find Dr. Chan'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. Ryan H. Chan is a general surgeon in New York, New York
Dr. Chan practices at Columbia University Irving Medical Center in New York, New York.
Dr. Chan's NPI, 1891299244, was assigned on March 21, 2018. Dr. Chan graduated from Albany Medical College in 2018. Dr. Chan holds Florida license ME168126.
- NPI
- 1891299244NPI Registry (opens in a new tab)
- Medicare PAC ID
- 3375870934
- NPI enumeration date
- March 21, 2018
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (212) 297-4255
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 34
- Medical school graduation
- 2018
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Ryan H. Chan practices at Columbia University Irving Medical Center in New York, New York
Dr. Chan's primary practice is Columbia University Irving Medical Center, at 622 W 168th St, New York, NY 10032 in New York County. The practice phone is (212) 297-4255.
- Columbia University Irving Medical Center622 W 168th St, New York, NY 10032 · New York CountyPhone(212) 297-4255
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Ryan H. Chan is affiliated with 2 sites of care and 1 medical group
Dr. Chan's primary practice is Columbia University Irving Medical Center in New York, New York. Dr. Chan is also affiliated with NewYork-Presbyterian/Weill Cornell Medical Center. The medical group on file is ColumbiaDoctors.
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. Ryan H. Chan's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Chan practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Columbia University Irving 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. Ryan H. Chan is one of 1,604 general surgeons in New York
Surgery is Dr. Chan's primary specialty in the NPI Registry, under taxonomy code 208600000X. Dr. Chan is board certified in surgery by the American Board of Surgery. Dmand AI has Dr. Chan's licenses on file in 2 states: Florida and New York.
Specialties and state licenses
- Surgery, FloridaPrimary
- New York license
General surgeons near Dr. Chan
Counts of general surgeons 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. Ryan H. Chan billed Medicare for 43 services in 2024
CMS data shows 43 Medicare services from Dr. Chan across 2 procedure codes in 2024, all of them office visits, for 69 Medicare patients. Medicare paid $1,868 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Chan compared with the New York median for general surgeons, 2024
- Dr. Chan
- New York median
- Medicare services
- 43vs 15472% below
- Medicare patients
- 69vs 10937% below
- Part D claims
- 67vs 242.8 times
Medians across 1,502 general surgeons in New York with Dmand AI profiles that report each measure.
Dr. Chan'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
Dr. Ryan H. Chan treated 69 Medicare patients in 2024, average age 70
CMS counts 69 Medicare patients who saw Dr. Chan in 2024. The largest group is 65 to 74, with 44 patients. 75% of them have high blood pressure, and 75% have high cholesterol. Their average risk score is 1.14, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Chan's median patient age at 61, with 48% women.
Dr. Chan's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Dr. Chan's Medicare patients by sex, 2024
- Women3348%
- Men3652%
Chronic conditions among Dr. Chan's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis57%
- Ischemic heart disease42%
- Anxiety33%
- Diabetes32%
- Mood disorders32%
- Depression30%
Share of Medicare patients with each condition. A patient can have several.
Dr. Chan's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 61
Patient panel by sex, all payers
- Women48%
- Men50%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Ryan H. Chan wrote 114 Medicare Part D claims in 2024
In 2024, Dr. Chan wrote 114 Medicare Part D claims for 50 patients. 98% of them were for generic drugs. CMS names the drug for 67 of them, across 3 drugs with 11 or more claims each, at $340 in total drug cost.
Dr. Chan's Part D claims by kind of drug, 2024
- Generic112 claims98%
- Brand-name and other2 claims2%
Dr. Chan'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. Chan's Part D claims, 2024
- Opioids24%27 of 114 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
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
Dr. Ryan H. Chan scored 92 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 92 out of 100 for Dr. Chan for performance year 2024, reported through an alternative payment model (APM). Dr. Chan accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS counts 42 procedures of hernia repair (minimally invasive) by Dr. Chan, more than 98% of the clinicians it reports for that procedure.
- Accepts Medicare assignment
- Yes
Dr. Chan's MIPS scores, performance year 2024
- 92of 100Final score
- 80.2of 100Quality
- 99of 100Promoting Interoperability
- 40of 100Improvement Activities
Each score is out of 100. The final score weighs the categories CMS scored for this clinician.
Where Dr. Chan ranks in Medicare procedure volume
- Hernia repair (minimally invasive)
- 98th percentile42 procedures
- Melanoma (skin cancer) excision
- 75th percentile21 procedures
- Hernia repair - groin (open)
- 95th percentile17 procedures
CMS ranks each clinician against every clinician it reports for the same procedure category.
Upper gastrointestinal (GI) endoscopy for acid reflux: 1 to 10 procedures (CMS shows small counts as a range)
Sources: Doctors and Clinicians National Downloadable File (CMS); Clinician Public Reporting: Overall MIPS Performance (CMS), 2024 data, released September 10, 2026; and Doctors and Clinicians Utilization Data (CMS)
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Dr. Ryan H. Chan has 7 publications on record
Dmand AI links 7 papers to Dr. Chan, published from 2017 to 2025. 2024 was the busiest year, with 3. Dr. Chan has published most often in J Am Acad Dermatol. Dr. Chan's most frequent co-authors are Shari Lipner, Christopher Haas, MD and Nikolaos Chandolias, MD.
Dr. Chan's papers by year, 2017 to 2025
Dr. Chan's most frequent co-authors
Recent publications by Dr. Chan
See who Dr. Chan researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Chan works with, so you can find a warm path to the right general surgeons.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. Ryan H. Chan received $979 in industry payments from 2024 to 2025
CMS Open Payments shows 11 general payments to Dr. Chan from 5 drug and device companies from 2024 to 2025. Food and beverage make up the largest share, 51% of the total. Davol Inc. paid the most, $813.
General payments to Dr. Chan by program year, 2024 to 2025
General payments to Dr. Chan by kind, 2024 to 2025
- Food and beverage$50151%
- Travel and lodging$47849%
Companies that paid Dr. Chan the most, 2024 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Ryan H. Chan graduated from Albany Medical College
Dr. Chan graduated from Albany Medical College in 2018.
- Medical school
- Board certified in surgery
Source: Dmand AI Professional Profile Data
Dr. Ryan H. Chan accepts plans from 5 insurance carriers
Dr. Chan is in network with 5 carriers, including Aetna, Elevance and Blue Cross Blue Shield of Michigan. Medicare plans come from the most carriers, 5. Check the plan with the practice before a visit.
- Aetna
- Elevance
- Blue Cross Blue Shield of Michigan
- Regence Health Plans
- CMS Medicare
Plan types Dr. Chan accepts, by number of carriers
- Medicare5
- PPO4
- HMO3
- POS3
- EPO2
Source: Dmand AI Insurance Network Data
Sources for Dr. Ryan H. Chan'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)Clinician Public Reporting: Overall MIPS Performance (CMS) (opens in a new tab)Doctors and Clinicians Utilization Data (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. Ryan H. Chan
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. Ryan H. Chan's NPI number?
Dr. Ryan H. Chan's NPI number is 1891299244. It was assigned on March 21, 2018, and it is active in the NPI Registry.
What kind of doctor is Dr. Ryan H. Chan?
Dr. Ryan H. Chan is a general surgeon in New York, New York. The primary specialty in the NPI Registry is Surgery Physician (taxonomy code 208600000X).
Where does Dr. Ryan H. Chan practice?
Dr. Chan practices at 622 W 168th St, New York, NY 10032. Dr. Chan's primary practice is Columbia University Irving Medical Center in New York, New York.
What is Dr. Ryan H. Chan's office phone number?
The practice phone on file for Dr. Chan is (212) 297-4255.
What is Dr. Ryan H. Chan's medical license number?
Dr. Chan holds Florida license ME168126, one of the licenses on file in 2 states.
Which states has Dr. Ryan H. Chan been licensed in?
Dmand AI has state licenses on file for Dr. Chan in Florida (2024 to 2026) and New York (2025 to 2027).
Which hospitals is Dr. Ryan H. Chan affiliated with?
Dr. Chan is affiliated with NewYork-Presbyterian/Weill Cornell Medical Center.
What medical group is Dr. Ryan H. Chan part of?
Dr. Chan is linked to ColumbiaDoctors.
Does Dr. Ryan H. Chan accept Medicare?
Yes. CMS data shows Dr. Chan billed Medicare for 43 services in 2024, and Dr. Chan accepts Medicare assignment.
What is Dr. Ryan H. Chan's MIPS score?
Dr. Chan's MIPS final score for performance year 2024 is 92 out of 100, reported through an alternative payment model (APM).
Show 10 more questionsShow fewer questions
How many Medicare patients does Dr. Ryan H. Chan see?
CMS counts 69 Medicare patients who saw Dr. Chan in 2024, with an average age of 70.
Is Dr. Ryan H. Chan board certified?
Yes. Dr. Chan is board certified in surgery by the American Board of Surgery.
What services does Dr. Ryan H. Chan bill to Medicare?
In 2024, Dr. Chan's most billed Medicare services were office visit, established patient (99213) and office visit, established patient (99212).
Where did Dr. Ryan H. Chan go to medical school?
Dr. Chan graduated from Albany Medical College in 2018.
What drugs does Dr. Ryan H. Chan prescribe most?
In 2024 Medicare Part D data, Dr. Chan's most prescribed drugs by claims were Oxycodone HCl, Methocarbamol and Omeprazole.
Has Dr. Ryan H. Chan received payments from drug or device companies?
CMS Open Payments shows $979 in general payments to Dr. Chan from 5 companies from 2024 to 2025. The largest total came from Davol Inc.
How long has Dr. Ryan H. Chan been practicing?
Dr. Chan graduated from medical school in 2018, 8 years ago.
Does Dr. Ryan H. Chan do research?
Dmand AI links 7 publications to Dr. Chan, published from 2017 to 2025.
Who does Dr. Ryan H. Chan publish with?
Dr. Chan's most frequent co-authors are Shari Lipner (4 shared papers), Christopher Haas, MD (2 shared papers) and Nikolaos Chandolias, MD (1 shared paper).
What insurance does Dr. Ryan H. Chan accept?
Dr. Chan is in network with 5 carriers, including Aetna, Elevance and Blue Cross Blue Shield of Michigan. Medicare plans come from the most carriers, 5. Check the plan with the practice before a visit.
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