Dr. Ernie Yap, MD
- Medicare services, 2021
- 206
- Part D claims, 2022
- 65
- Industry payments
- $3,498
- Affiliated sites
- 2
- Medical groups
- 2
- Practice address
- 450 Clarkson Ave # 30 #30, Brooklyn, NY 11203
- Practice phone
- Call (718) 270-2045
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Downstate Health Physicians
Multi-specialty group site · Brooklyn, New York
Find Dr. Yap'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. Ernie Yap is a nephrologist in Brooklyn, New York
Dr. Yap practices at Downstate Health Physicians in Brooklyn, New York.
Dr. Yap's NPI, 1407003734, was assigned on August 18, 2008. Dr. Yap holds New York license 296450.
- NPI
- 1407003734NPI Registry (opens in a new tab)
- NPI enumeration date
- August 18, 2008
- NPI status
- Active
- Practice phone
- (718) 270-2045
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Ernie Yap practices at Downstate Health Physicians in Brooklyn, New York
Dr. Yap's primary practice is Downstate Health Physicians, at 450 Clarkson Ave # 30 #30, Brooklyn, NY 11203. The practice phone is (718) 270-2045.
- Downstate Health Physicians450 Clarkson Ave # 30 #30, Brooklyn, NY 11203Phone(718) 270-2045
Sources: Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Ernie Yap is affiliated with 2 sites of care and 2 medical groups
Dr. Yap's primary practice is Downstate Health Physicians in Brooklyn, New York. The medical group on file is Downstate Health Physicians. Dmand AI also links Dr. Yap to 1 more group practice or clinic and 1 medical group, each named with a free account.
Sources: Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dmand AI tracks the EHR system at Dr. Ernie Yap's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Yap practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Downstate Health Physicians | Available with a free account |
| +1 more site and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Ernie Yap is one of 914 nephrologists in New York
Nephrology is Dr. Yap's primary specialty in the NPI Registry, under taxonomy code 207RN0300X. Dr. Yap is licensed in New York.
Specialties and state licenses
- Nephrology, New YorkPrimary
Nephrologists near Dr. Yap
Counts of nephrologists 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. Ernie Yap billed Medicare for 206 services in 2021
CMS data shows 206 Medicare services from Dr. Yap across 6 procedure codes in 2021. Medicare paid $25,087 for them.
Dr. Yap's Medicare services by type, 2020 to 2021
- 2020
- 2021
- Office and hospital visits
- 2020: 2872021: 14948%
- Tests and treatments
- 2020: 302021: 5790%
Where Dr. Yap's Medicare services took place, 2021
- In an office2110%
- In a facility18590%
Dr. Yap compared with the New York median for nephrologists, 2021
- Dr. Yap
- New York median
- Medicare services
- 206vs 68970% below
- Part D claims
- 65vs 43685% below
Medians across 892 nephrologists in New York with Dmand AI profiles that report each measure.
Dr. Yap's most billed Medicare procedure codes, 2021
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 Dr. Yap and other nephrologists in New York.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Ernie Yap wrote 65 Medicare Part D claims in 2022
In 2022, Dr. Yap wrote 65 Medicare Part D claims. Every claim was for a generic drug. They cover 3 drugs, with $3,384 in total drug cost. In 2021, CMS named 182 claims across 7 drugs.
Dr. Yap's most prescribed drugs by claims, 2022
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Part D claims for drugs CMS names, 2021 to 2022
- 2021
- 2022
- Claims for drugs CMS names
- 2021: 1822022: 6564%
Drugs named by CMS: 3 in 2022, 7 in 2021.
Source: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026
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Dr. Ernie Yap received $3,498 in industry payments from 2019 to 2024
CMS Open Payments shows 63 general payments to Dr. Yap from 13 drug and device companies from 2019 to 2024. Food and beverage make up the largest share, 93% of the total. AstraZeneca Pharmaceuticals LP paid the most, $1,832. It also lists 14 research payments totaling $1,634 in 2019.
General payments to Dr. Yap by program year, 2019 to 2024
General payments to Dr. Yap by kind, 2019 to 2024
- Food and beverage$3,26093%
- Speaker and faculty fees$2006%
- Education$381%
Companies that paid Dr. Yap the most, 2019 to 2024
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Dr. Ernie Yap'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 DataDoctors and Clinicians National Downloadable File (CMS) (opens in a new tab) |
| Primary practice, affiliations and health system | Dmand AI Affiliation DataDoctors and Clinicians National Downloadable File (CMS) (opens in a new tab) |
| 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 |
| Part D prescribing | Medicare Part D Prescribers - by Provider and Drug (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. Ernie Yap
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. Ernie Yap's NPI number?
Dr. Ernie Yap's NPI number is 1407003734. It was assigned on August 18, 2008, and it is active in the NPI Registry.
What kind of doctor is Dr. Ernie Yap?
Dr. Ernie Yap is a nephrologist in Brooklyn, New York. The primary specialty in the NPI Registry is Nephrology Physician (taxonomy code 207RN0300X).
Where does Dr. Ernie Yap practice?
Dr. Yap practices at 450 Clarkson Ave # 30 #30, Brooklyn, NY 11203. Dr. Yap's primary practice is Downstate Health Physicians in Brooklyn, New York. Dmand AI also links Dr. Yap to 1 group practice or clinic and 1 medical group.
What is Dr. Ernie Yap's office phone number?
The practice phone on file for Dr. Yap is (718) 270-2045.
What is Dr. Ernie Yap's medical license number?
Dr. Yap holds New York license 296450.
What medical group is Dr. Ernie Yap part of?
Dr. Yap is linked to Downstate Health Physicians. Dmand AI links Dr. Yap to 1 more medical group.
Does Dr. Ernie Yap accept Medicare?
Yes. CMS data shows Dr. Yap billed Medicare for 206 services in 2021.
What services does Dr. Ernie Yap bill to Medicare?
In 2021, Dr. Yap's most billed Medicare services were hospital inpatient care (99232), hospital inpatient care (99223) and hospital inpatient care (99231).
What drugs does Dr. Ernie Yap prescribe most?
In 2022 Medicare Part D data, Dr. Yap's most prescribed drugs by claims were Furosemide, Meropenem and Calcitriol.
Has Dr. Ernie Yap received payments from drug or device companies?
CMS Open Payments shows $3,498 in general payments to Dr. Yap from 13 companies from 2019 to 2024. The largest total came from AstraZeneca Pharmaceuticals LP.
How long has Dr. Ernie Yap been practicing?
Dr. Yap's NPI was assigned in 2008.
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