Klaus Dittmar, M.D.
NPI 1245239664 · Hematology & Oncology Physician · New Hyde Park, NY
Enrolled with Medicare as Practitioner - Hematology/Oncology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Klaus Dittmar, M.D. is a Hematology & Oncology Physician provider in New Hyde Park, NY (NPI 1245239664).
Provider details
- NPI number
- 1245239664
- Entity type
- Individual
- Primary specialty
- Hematology & Oncology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 089981 (NY)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
20 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
483 Medicare services, 2024 (ranked within specialty)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Insertion of Needle Into Vein for Collection of Blood Sample36415 | 229 | $9 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 102 | $146 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 73 | $104 |
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 38 | $206 |
| Stool Analysis for Blood, By Peroxidase Activity82272 | 30 | $4 |
| New Patient Office Or Other Outpatient Visit With a High Level of Medical Decision Making, If Using Time, 60 Minutes Or More99205 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2005-07-18
- Last updated
- 2021-03-25
- Certified
- 2021-03-25
Frequently asked questions
- What is Klaus Dittmar's NPI number?
- Klaus Dittmar's National Provider Identifier (NPI) is 1245239664, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Klaus Dittmar's specialty?
- Klaus Dittmar is listed in the NPPES registry with a primary specialty of Hematology & Oncology Physician (Allopathic & Osteopathic Physicians).
- Where is Klaus Dittmar located?
- Klaus Dittmar's practice location on file with NPPES is 1999 Marcus Ave Ste 306, New Hyde Park, NY 11042-1028.
- What is Klaus Dittmar's phone number?
- The practice phone number listed in the NPPES registry for Klaus Dittmar is (516) 627-1221.
- Does Klaus Dittmar accept Medicare?
- Klaus Dittmar is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Klaus Dittmar's NPI active?
- Yes — Klaus Dittmar's NPI (1245239664) is active in the NPPES registry as of the last update on 2021-03-25.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.