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Dr. Rebecca Klahr, MD
NPI1851977441
- Medicare patients, 2024
- 14
- Part D claims, 2024
- 660
- Publications
- 8
- Industry payments
- $767
- Affiliated sites
- 1
- 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
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Dr. Rebecca Klahr is an internist in New York, New York
Dr. Klahr practices at Columbia University Irving Medical Center in New York, New York.
Dr. Klahr's NPI, 1851977441, was assigned on March 23, 2021. Dr. Klahr graduated from Icahn School Of Medicine At Mount Sinai in 2021. Dr. Klahr holds New York license 326469.
NPI and contact details
- NPI
- 1851977441NPI Registry (opens in a new tab)
- NPI enumeration date
- March 23, 2021
- NPI status
- Active
- Practice phone
- (212) 297-4255
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 31
- Medical school graduation
- 2021
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Practice Data
Dr. Rebecca Klahr practices at Columbia University Irving Medical Center in New York, New York
Dr. Klahr'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. Rebecca Klahr is affiliated with 2 sites of care and 1 medical group
Dr. Klahr's primary practice is Columbia University Irving Medical Center in New York, New York. The medical group on file is ColumbiaDoctors. Dmand AI also links Dr. Klahr to 1 more group practice or clinic, named with a free account.
Columbia University Irving Medical CenterPrimary
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; and Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. Rebecca Klahr's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Klahr 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. Rebecca Klahr is one of 9,643 internists in New York
Internal medicine is Dr. Klahr's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dr. Klahr is licensed in New York.
Specialties and state licenses
- Internal medicine, New YorkPrimary
Internists near Dr. Klahr
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. Rebecca Klahr treated 14 Medicare patients in 2024, average age 71
CMS counts 14 Medicare patients who saw Dr. Klahr in 2024. The largest group is 85 and over, with 0 patients. 75% of them have high blood pressure, and 75% have high cholesterol. Their average risk score is 2.27, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.
Across all payers, Dmand AI patient panel data puts Dr. Klahr's median patient age at 69, with 35% women.
Medicare patients, 202414
Average age71
Average risk score2.27
Dr. Klahr's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Chronic conditions among Dr. Klahr's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
Share of Medicare patients with each condition. A patient can have several.
Dr. Klahr's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 69
Patient panel by sex, all payers
- Women35%
- Men59%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Rebecca Klahr wrote 660 Medicare Part D claims in 2024
In 2024, Dr. Klahr wrote 660 Medicare Part D claims for 204 patients. 80% of them were for generic drugs. CMS names the drug for 272 of them, across 14 drugs with 11 or more claims each, at $40,649 in total drug cost. In 2023, CMS named 137 claims across 8 drugs.
Part D claims, 2024660
Drugs named by CMS14
Total drug cost$40,649
Part D patients204
Dr. Klahr's Part D claims by kind of drug, 2024
- Generic526 claims80%
- Brand-name120 claims18%
- Other14 claims2%
Dr. Klahr'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. Klahr's Part D claims, 2024
- Antibiotics3%22 of 660 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: 1372024: 27299%
Drugs named by CMS: 14 in 2024, 8 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
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Dr. Rebecca Klahr has 8 publications on record
Dmand AI links 8 papers to Dr. Klahr, published from 2019 to 2024. 2019 was the busiest year, with 3. The most frequent topics are Pregnancy Outcome, Premature Birth and Uterus. Dr. Klahr has published most often in Am J Perinatol. Dr. Klahr's most frequent co-authors are Nathan S. Fox, MD, Andrei Rebarber, MD and Kyrollis Attalla, MD.
Papers8
Years published2019 to 2024
Dr. Klahr's papers by year, 2019 to 2024
Topics Dr. Klahr writes about most
- Pregnancy Outcome
- Premature Birth
- Uterus
Dr. Klahr's most frequent co-authors
- Nathan S. Fox, MD5 shared papers
- Andrei Rebarber, MD4 shared papers
- Kyrollis Attalla, MD1 shared paper
Recent publications by Dr. Klahr
Anti-Bacterial AgentsAntibiotic ProphylaxisCystectomy
Atrial FibrillationInpatientsMyocarditis
Am J Perinatol
Adrenal Cortex HormonesBirth WeightFetal Growth Retardation
Cesarean SectionHysterectomyPlacenta Accreta
See who Dr. Klahr researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Klahr 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. Rebecca Klahr received $767 in industry payments from 2024 to 2025
CMS Open Payments shows 36 general payments to Dr. Klahr from 12 drug and device companies from 2024 to 2025. Food and beverage make up the largest share, 100% of the total. Merck Sharp & Dohme Corporation paid the most, $241.
General payments to Dr. Klahr by program year, 2024 to 2025
Companies that paid Dr. Klahr 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. Rebecca Klahr graduated from Icahn School Of Medicine At Mount Sinai
Dr. Klahr graduated from Icahn School Of Medicine At Mount Sinai in 2021.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Rebecca Klahr'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 Data |
| 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) |
| 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 |
| 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. Rebecca Klahr
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. Rebecca Klahr's NPI number?
Dr. Rebecca Klahr's NPI number is 1851977441. It was assigned on March 23, 2021, and it is active in the NPI Registry.
What kind of doctor is Dr. Rebecca Klahr?
Dr. Rebecca Klahr 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. Rebecca Klahr practice?
Dr. Klahr practices at 622 W 168th St, New York, NY 10032. Dr. Klahr's primary practice is Columbia University Irving Medical Center in New York, New York. Dmand AI also links Dr. Klahr to 1 group practice or clinic.
What is Dr. Rebecca Klahr's office phone number?
The practice phone on file for Dr. Klahr is (212) 297-4255.
What is Dr. Rebecca Klahr's medical license number?
Dr. Klahr holds New York license 326469.
What medical group is Dr. Rebecca Klahr part of?
Dr. Klahr is linked to ColumbiaDoctors.
How many Medicare patients does Dr. Rebecca Klahr see?
CMS counts 14 Medicare patients who saw Dr. Klahr in 2024, with an average age of 71.
Where did Dr. Rebecca Klahr go to medical school?
Dr. Klahr graduated from Icahn School Of Medicine At Mount Sinai in 2021.
What drugs does Dr. Rebecca Klahr prescribe most?
In 2024 Medicare Part D data, Dr. Klahr's most prescribed drugs by claims were Atorvastatin Calcium, Amlodipine Besylate and Rosuvastatin Calcium.
Has Dr. Rebecca Klahr received payments from drug or device companies?
CMS Open Payments shows $767 in general payments to Dr. Klahr from 12 companies from 2024 to 2025. The largest total came from Merck Sharp & Dohme Corporation.
Show 3 more questionsShow fewer questions
How long has Dr. Rebecca Klahr been practicing?
Dr. Klahr graduated from medical school in 2021, 5 years ago.
Does Dr. Rebecca Klahr do research?
Dmand AI links 8 publications to Dr. Klahr, published from 2019 to 2024.
Who does Dr. Rebecca Klahr publish with?
Dr. Klahr's most frequent co-authors are Nathan S. Fox, MD (5 shared papers), Andrei Rebarber, MD (4 shared papers) and Kyrollis Attalla, MD (1 shared paper).
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