Dr. Ivan Guan, MD
- Part D claims, 2024
- 29
- Hospital affiliations
- 1
- Industry payments
- $12,461
- State license
- 1
- Year NPI issued
- 2021
- Practice address
- 800 Poly Place, Brooklyn, NY 11209
- Practice phone
- Call (718) 836-6600
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Guan'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. Ivan Guan is a neurologist in Brooklyn, New York
Dr. Guan practices at Brooklyn VA Medical Center in Brooklyn, New York, part of Veterans Health Administration.
Dr. Guan's NPI, 1649850348, was assigned on April 8, 2021. Dr. Guan holds Illinois license 036.175387.
- NPI
- 1649850348NPI Registry (opens in a new tab)
- Medicare PAC ID
- 9739694589
- NPI enumeration date
- April 8, 2021
- NPI status
- Active
- Practice phone
- (718) 836-6600
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Affiliation Data
Dr. Ivan Guan practices at Brooklyn VA Medical Center in Brooklyn, New York
Dr. Guan's primary practice is Brooklyn VA Medical Center, at 800 Poly Place, Brooklyn, NY 11209 in Kings County. The practice phone is (718) 836-6600.
- Brooklyn VA Medical Center800 Poly Place, Brooklyn, NY 11209 · Kings CountyPhone(718) 836-6600
Source: Dmand AI Affiliation Data
Dr. Ivan Guan is affiliated with 1 site of care
Dr. Guan's primary practice is Brooklyn VA Medical Center in Brooklyn, New York, part of Veterans Health Administration.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Ivan Guan's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Guan practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Brooklyn VA Medical Center | Available with a free account |
Source: Dmand AI Technology Install Data
For health IT teams
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Dr. Ivan Guan is one of 1,489 neurologists in New York
Neurology is Dr. Guan's primary specialty in the NPI Registry, under taxonomy code 2084N0400X. Dr. Guan is licensed in Illinois.
Specialties and state licenses
- Neurology, IllinoisPrimary
Neurologists near Dr. Guan
Counts of neurologists 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. Ivan Guan's patients have a median age of 73
Across all payers, Dmand AI patient panel data puts Dr. Guan's median patient age at 73, with 53% women.
Dr. Guan's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 73
Patient panel by sex, all payers
- Women53%
- Men47%
Source: Dmand AI Patient Panel Data
Dr. Ivan Guan wrote 29 Medicare Part D claims in 2024
In 2024, Dr. Guan wrote 29 Medicare Part D claims for 11 patients. 93% of them were for generic drugs.
Dr. Guan's Part D claims by kind of drug, 2024
- Generic27 claims93%
- Brand-name and other2 claims7%
Source: Medicare Part D Prescribers - by Provider (CMS), 2024 data
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Filter 7.4M+ HCPs by Medicare procedures, Part D drugs and Open Payments history, then reach them with verified contacts in one login.
Dr. Ivan Guan received $12,461 in industry payments in 2025
CMS Open Payments shows 27 general payments to Dr. Guan from 3 drug and device companies in 2025. Grants make up the largest share, 80% of the total. Medtronic, Inc. paid the most, $11,041.
General payments to Dr. Guan by kind, 2025 to 2025
- Grants$10,00080%
- Travel and lodging$1,79814%
- Food and beverage$6625%
Companies that paid Dr. Guan the most, 2025 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Dr. Ivan Guan'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 patients and the all-payer patient panel | Dmand AI Patient Panel Data |
| Part D prescribing | Medicare Part D Prescribers - by Provider (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 Dr. Ivan Guan
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. Ivan Guan's NPI number?
Dr. Ivan Guan's NPI number is 1649850348. It was assigned on April 8, 2021, and it is active in the NPI Registry.
What kind of doctor is Dr. Ivan Guan?
Dr. Ivan Guan is a neurologist in Brooklyn, New York. The primary specialty in the NPI Registry is Neurology Physician (taxonomy code 2084N0400X).
Where does Dr. Ivan Guan practice?
Dr. Guan practices at 800 Poly Place, Brooklyn, NY 11209. Dr. Guan's primary practice is Brooklyn VA Medical Center in Brooklyn, New York, part of Veterans Health Administration.
What is Dr. Ivan Guan's office phone number?
The practice phone on file for Dr. Guan is (718) 836-6600.
What is Dr. Ivan Guan's medical license number?
Dr. Guan holds Illinois license 036.175387.
Which hospitals is Dr. Ivan Guan affiliated with?
Dr. Guan practices at Brooklyn VA Medical Center in Brooklyn, New York.
Has Dr. Ivan Guan received payments from drug or device companies?
CMS Open Payments shows $12,461 in general payments to Dr. Guan from 3 companies from 2025 to 2025. The largest total came from Medtronic, Inc.
How long has Dr. Ivan Guan been practicing?
Dr. Guan's NPI was assigned in 2021.
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