Dr. Klaus Dittmar, MD
- Medicare services, 2024
- 483
- Medicare patients, 2024
- 65
- Part D claims, 2024
- 17
- MIPS score, 2024
- 91
- Hospital affiliations
- 1
- Practice address
- 550 1st Ave, New York, NY 10016
- Practice phone
- Call (212) 263-1481
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
NYU Langone - Tisch Hospital
New York, New York
Find Dr. Dittmar's professional email, personal email and mobile number
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Dr. Klaus Dittmar is a hematologist and oncologist in New York, New York
Dr. Dittmar practices at NYU Langone - Tisch Hospital in New York, New York.
Dr. Dittmar's NPI, 1245239664, was assigned on July 18, 2005. Dr. Dittmar graduated from University of Heidelberg Faculty of Medicine in 1957. Dr. Dittmar holds New York license 089981.
- NPI
- 1245239664NPI Registry (opens in a new tab)
- Medicare PAC ID
- 4082776117
- NPI enumeration date
- July 18, 2005
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (212) 263-1481
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 95
- Medical school graduation
- 1957
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Klaus Dittmar practices at NYU Langone - Tisch Hospital in New York, New York
Dr. Dittmar's primary practice is NYU Langone - Tisch Hospital, at 550 1st Ave, New York, NY 10016 in New York County. The practice phone is (212) 263-1481.
- NYU Langone - Tisch Hospital550 1st Ave, New York, NY 10016 · New York CountyPhone(212) 263-1481
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Klaus Dittmar is affiliated with 3 sites of care and 1 medical group
Dr. Dittmar's primary practice is NYU Langone - Tisch Hospital in New York, New York. Dr. Dittmar is also affiliated with Tisch Hospital. The medical group on file is NYU Langone Orthopedic Surgery Associates. Dmand AI also links Dr. Dittmar to 1 more group practice or clinic, named with a free account.
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. Klaus Dittmar's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Dittmar practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| NYU Langone - Tisch Hospital | Available with a free account |
| +2 more affiliated sites | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Klaus Dittmar is one of 996 hematologists and oncologists in New York
Hematology and oncology is Dr. Dittmar's primary specialty in the NPI Registry, under taxonomy code 207RH0003X. Dr. Dittmar is licensed in New York.
Specialties and state licenses
- Hematology and oncology, New YorkPrimary
Hematologists and oncologists near Dr. Dittmar
Counts of hematologists and oncologists 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. Klaus Dittmar billed Medicare for 483 services in 2024
CMS data shows 483 Medicare services from Dr. Dittmar across 6 procedure codes in 2024, for 65 Medicare patients. Medicare paid $26,884 for them. Every service was in an office.
Dr. Dittmar's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Surgery
- 2023: 2162024: 2296%
- Office and hospital visits
- 2023: 2112024: 2246%
- Lab and pathology
- 2023: 502024: 3040%
Dr. Dittmar compared with the New York median for hematologists and oncologists, 2024
- Dr. Dittmar
- New York median
- Medicare services
- 483vs 66828% below
- Medicare patients
- 65vs 21069% below
- Part D claims
- 12vs 25895% below
Medians across 940 hematologists and oncologists in New York with Dmand AI profiles that report each measure.
Dr. Dittmar'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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Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Dittmar and other hematologists and oncologists in New York.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Klaus Dittmar treated 65 Medicare patients in 2024, average age 78
CMS counts 65 Medicare patients who saw Dr. Dittmar in 2024. The largest group is 75 to 84, with 32 patients. 75% of them have high blood pressure, and 75% have high cholesterol. Their average risk score is 1.38, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Dittmar's median patient age at 76, with 58% women.
Dr. Dittmar's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Dr. Dittmar's Medicare patients by sex, 2024
- Women3148%
- Men3452%
Chronic conditions among Dr. Dittmar's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis60%
- Ischemic heart disease38%
- Diabetes31%
- Atrial fibrillation26%
- Cancer23%
- Mood disorders18%
Share of Medicare patients with each condition. A patient can have several.
Dr. Dittmar's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 76
Patient panel by sex, all payers
- Women58%
- Men40%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Klaus Dittmar wrote 17 Medicare Part D claims in 2024
In 2024, Dr. Dittmar wrote 17 Medicare Part D claims. 94% of them were for generic drugs. CMS names the drug for 12 of them, across 1 drug with 11 or more claims each, at $2,603 in total drug cost. In 2021, CMS named 24 claims across 2 drugs.
Dr. Dittmar's Part D claims by kind of drug, 2024
- Generic16 claims94%
- Brand-name and other1 claims6%
Dr. Dittmar'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: 242022: 1250%
Drugs named by CMS: 1 in 2022, 2 in 2021.
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. Klaus Dittmar scored 91 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 91 out of 100 for Dr. Dittmar for performance year 2024, reported as part of a group. Dr. Dittmar accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Dr. Dittmar's MIPS scores, performance year 2024
- 91of 100Final score
- 91.8of 100Quality
- 100of 100Promoting Interoperability
- 40of 100Improvement Activities
- 75of 100Cost
Each score is out of 100. The final score weighs the categories CMS scored for this clinician.
Sources: Doctors and Clinicians National Downloadable File (CMS); and Clinician Public Reporting: Overall MIPS Performance (CMS), 2024 data, released September 10, 2026
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Dr. Klaus Dittmar received $540 in industry payments from 2016 to 2018
CMS Open Payments shows 27 general payments to Dr. Dittmar from 18 drug and device companies from 2016 to 2018. Food and beverage make up the largest share, 95% of the total. Incyte Corporation paid the most, $59.
General payments to Dr. Dittmar by program year, 2016 to 2018
General payments to Dr. Dittmar by kind, 2016 to 2018
- Food and beverage$51595%
- Gifts$255%
Companies that paid Dr. Dittmar the most, 2016 to 2018
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Klaus Dittmar graduated from University of Heidelberg Faculty of Medicine
Dr. Dittmar graduated from University of Heidelberg Faculty of Medicine in 1957.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Klaus Dittmar'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) |
| 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. Klaus Dittmar
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. Klaus Dittmar's NPI number?
Dr. Klaus Dittmar's NPI number is 1245239664. It was assigned on July 18, 2005, and it is active in the NPI Registry.
What kind of doctor is Dr. Klaus Dittmar?
Dr. Klaus Dittmar is a hematologist and oncologist in New York, New York. The primary specialty in the NPI Registry is Hematology & Oncology Physician (taxonomy code 207RH0003X).
Where does Dr. Klaus Dittmar practice?
Dr. Dittmar practices at 550 1st Ave, New York, NY 10016. Dr. Dittmar's primary practice is NYU Langone - Tisch Hospital in New York, New York. Dmand AI also links Dr. Dittmar to 1 group practice or clinic.
What is Dr. Klaus Dittmar's office phone number?
The practice phone on file for Dr. Dittmar is (212) 263-1481.
What is Dr. Klaus Dittmar's medical license number?
Dr. Dittmar holds New York license 089981.
Which hospitals is Dr. Klaus Dittmar affiliated with?
Dr. Dittmar is affiliated with Tisch Hospital.
What medical group is Dr. Klaus Dittmar part of?
Dr. Dittmar is linked to NYU Langone Orthopedic Surgery Associates.
Does Dr. Klaus Dittmar accept Medicare?
Yes. CMS data shows Dr. Dittmar billed Medicare for 483 services in 2024, and Dr. Dittmar accepts Medicare assignment.
What is Dr. Klaus Dittmar's MIPS score?
Dr. Dittmar's MIPS final score for performance year 2024 is 91 out of 100, reported as part of a group.
How many Medicare patients does Dr. Klaus Dittmar see?
CMS counts 65 Medicare patients who saw Dr. Dittmar in 2024, with an average age of 78.
Show 5 more questionsShow fewer questions
What services does Dr. Klaus Dittmar bill to Medicare?
In 2024, Dr. Dittmar's most billed Medicare services were surgery: heart and blood vessels (36415), office visit, established patient (99214) and office visit, established patient (99213).
Where did Dr. Klaus Dittmar go to medical school?
Dr. Dittmar graduated from University of Heidelberg Faculty of Medicine in 1957.
What drugs does Dr. Klaus Dittmar prescribe most?
In 2022 Medicare Part D data, Dr. Dittmar's most prescribed drugs by claims were Deferasirox.
Has Dr. Klaus Dittmar received payments from drug or device companies?
CMS Open Payments shows $540 in general payments to Dr. Dittmar from 18 companies from 2016 to 2018. The largest total came from Incyte Corporation.
How long has Dr. Klaus Dittmar been practicing?
Dr. Dittmar graduated from medical school in 1957, 69 years ago.
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