Robert Kloss, M.D.
NPI 1649207770 · Hematology & Oncology Physician · Danbury, CT
Enrolled with Medicare as Practitioner - Medical Oncology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Robert Kloss, M.D. is a Hematology & Oncology Physician provider in Danbury, CT (NPI 1649207770).
Provider details
- NPI number
- 1649207770
- Entity type
- Individual
- Primary specialty
- Hematology & Oncology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 022825 (CT)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
20 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
1,822 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
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 .
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) |
|---|---|---|
| Complete Blood Cell Count (red Cells, White Blood Cell, Platelets), Automated Test and Automated Differential White Blood Cell Count85025 | 599 | $8 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 561 | $98 |
| Insertion of Needle Into Vein for Collection of Blood Sample36415 | 358 | $9 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 288 | $139 |
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 16 | $196 |
Typical Medicare-allowed amounts for these services range $8–$196 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 26 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Abiraterone Acetate | 69 | — |
| Prednisone | 64 | 18 |
| Ibrutinibbrand: Imbruvica | 57 | — |
| Oxycodone Hcl | 47 | — |
| Exemestane | 41 | — |
| Letrozole | 38 | — |
| Apixabanbrand: Eliquis | 34 | — |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$2,552 across 119 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-06-26
- Last updated
- 2010-11-03
Frequently asked questions
- What is Robert Kloss's NPI number?
- Robert Kloss's National Provider Identifier (NPI) is 1649207770, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Robert Kloss's specialty?
- Robert Kloss is listed in the NPPES registry with a primary specialty of Hematology & Oncology Physician (Allopathic & Osteopathic Physicians).
- Where is Robert Kloss located?
- Robert Kloss's practice location on file with NPPES is 24 Hospital Ave, Danbury, CT 06810-6099.
- What is Robert Kloss's phone number?
- The practice phone number listed in the NPPES registry for Robert Kloss is (203) 797-7029.
- Does Robert Kloss accept Medicare?
- Robert Kloss is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Robert Kloss's NPI active?
- Yes — Robert Kloss's NPI (1649207770) is active in the NPPES registry as of the last update on 2010-11-03.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.