Dr. Ira Kalfus, MD
- Part D claims, 2017
- 11
- Publications
- 13
- Industry payments
- $65,493
- State license
- 1
- Year NPI issued
- 2012
- Practice address
- 251 Central Park W, New York, NY 10024-4134
- Practice phone
- Call (917) 817-7517
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Find Dr. Kalfus' 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. Ira Kalfus is an internist in New York, New York
Dr. Kalfus practices in New York, New York.
Dr. Kalfus' NPI, 1053681650, was assigned on January 12, 2012. Dr. Kalfus holds New York license 178151.
- NPI
- 1053681650NPI Registry (opens in a new tab)
- NPI enumeration date
- January 12, 2012
- NPI status
- Active
- Practice phone
- (917) 817-7517
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
Sources: NPPES NPI Registry (CMS); and Dmand AI Professional Profile Data
Dr. Ira Kalfus' practice address is in New York, New York
Dr. Kalfus' practice address in the NPI Registry is 251 Central Park W, New York, NY 10024-4134. The practice phone is (917) 817-7517.
- NPI Registry address251 Central Park W, New York, NY 10024-4134Phone(917) 817-7517
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dmand AI tracks the EHR system at Dr. Ira Kalfus' practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Kalfus practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Dr. Kalfus' practice | Available with a free account |
Source: Dmand AI Technology Install Data
For health IT teams
Dmand AI maps EHR vendors, IT decision makers and buying committees across each health system and 6.2K+ hospitals, with verified contacts in the same login.
Dr. Ira Kalfus is one of 9,643 internists in New York
Internal medicine is Dr. Kalfus' primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dr. Kalfus is licensed in New York.
Specialties and state licenses
- Internal medicine, New YorkPrimary
Internists near Dr. Kalfus
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
Dr. Ira Kalfus wrote 11 Medicare Part D claims in 2017
In 2017, Dr. Kalfus wrote 11 Medicare Part D claims. They cover 1 drug, with $3,967 in total drug cost.
Dr. Kalfus' most prescribed drugs by claims, 2017
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Source: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026
For MedTech and pharma teams
Filter 7.4M+ HCPs by Medicare procedures, Part D drugs and Open Payments history, then reach them with verified contacts in one login.
Dr. Ira Kalfus has 13 publications on record
Dmand AI links 13 papers to Dr. Kalfus, published from 2010 to 2020. 2020 was the busiest year, with 4. The most frequent topics are Angioedemas, Hereditary, Complement C1 Inhibitor Protein and Filtration. Dr. Kalfus has published most often in Ann Allergy Asthma Immunol. Dr. Kalfus' most frequent co-authors are Timothy J. Craig, DO, William Raymond Lumry, MD and Marc Andrew Riedl, MD.
Dr. Kalfus' papers by year, 2010 to 2020
Topics Dr. Kalfus writes about most
- Angioedemas, Hereditary
- Complement C1 Inhibitor Protein
- Filtration
- Complement C1 Inactivator Proteins
- Complement Inactivating Agents
- Nanotechnology
Dr. Kalfus' most frequent co-authors
- Timothy J. Craig, DO3 shared papers
- William Raymond Lumry, MD3 shared papers
- Marc Andrew Riedl, MD3 shared papers
Recent publications by Dr. Kalfus
See who Dr. Kalfus researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Kalfus works with, so you can find a warm path to the right internists.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. Ira Kalfus received $65,493 in industry payments from 2018 to 2020
CMS Open Payments shows 9 general payments to Dr. Kalfus from 4 drug and device companies from 2018 to 2020. Consulting fees make up the largest share, 99% of the total. RedHill Biopharma Inc. paid the most, $65,086.
General payments to Dr. Kalfus by program year, 2018 to 2020
General payments to Dr. Kalfus by kind, 2018 to 2020
- Consulting fees$65,08699%
- Food and beverage$4071%
Companies that paid Dr. Kalfus the most, 2018 to 2020
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Dr. Ira Kalfus'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 |
| Part D prescribing | Medicare Part D Prescribers - by Provider and Drug (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) |
| 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. Ira Kalfus
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. Ira Kalfus' NPI number?
Dr. Ira Kalfus' NPI number is 1053681650. It was assigned on January 12, 2012, and it is active in the NPI Registry.
What kind of doctor is Dr. Ira Kalfus?
Dr. Ira Kalfus is an internist in New York, New York. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Dr. Ira Kalfus practice?
Dr. Kalfus practices at 251 Central Park W, New York, NY 10024-4134.
What is Dr. Ira Kalfus' office phone number?
The practice phone on file for Dr. Kalfus is (917) 817-7517.
What is Dr. Ira Kalfus' medical license number?
Dr. Kalfus holds New York license 178151.
What drugs does Dr. Ira Kalfus prescribe most?
In 2017 Medicare Part D data, Dr. Kalfus' most prescribed drugs by claims were Linzess.
Has Dr. Ira Kalfus received payments from drug or device companies?
CMS Open Payments shows $65,493 in general payments to Dr. Kalfus from 4 companies from 2018 to 2020. The largest total came from RedHill Biopharma Inc.
How long has Dr. Ira Kalfus been practicing?
Dr. Kalfus' NPI was assigned in 2012.
Does Dr. Ira Kalfus do research?
Dmand AI links 13 publications to Dr. Kalfus, published from 2010 to 2020.
Who does Dr. Ira Kalfus publish with?
Dr. Kalfus' most frequent co-authors are Timothy J. Craig, DO (3 shared papers), William Raymond Lumry, MD (3 shared papers) and Marc Andrew Riedl, MD (3 shared papers).
Selling to internal medicine practices?
See internists in New York by site of care and group
Find the practices, groups and hospitals they work with, and the right people to contact at each.
- 30 days free
- Self-serve
- No credit card