Marlon Kleinman, M.D.
NPI 1255343521 · Hematology & Oncology Physician · Morton Grove, IL
Enrolled with Medicare as Practitioner - Hematology/Oncology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Marlon Kleinman, M.D. is a Hematology & Oncology Physician provider in Morton Grove, IL (NPI 1255343521).
Provider details
- NPI number
- 1255343521
- Entity type
- Individual
- Primary specialty
- Hematology & Oncology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 036086753 (IL)
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
19 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
1,682 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) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 458 | $132 |
| Injection of Drug Or Substance Under Skin Or Into Muscle96372 | 267 | $15 |
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 255 | $187 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 208 | $94 |
| Injection of Additional New Drug Or Substance Into Vein96375 | 165 | $16 |
| Injection of Drug Or Substance Into Vein96374 | 79 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 25 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Apixabanbrand: Eliquis | 121 | 26 |
| Hydroxyurea | 80 | 14 |
| Warfarin Sodium | 66 | — |
| Ruxolitinib Phosphatebrand: Jakafi | 41 | — |
| Rivaroxabanbrand: Xarelto | 35 | — |
| Acyclovir | 33 | — |
| Anastrozole | 28 | — |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$14,899 across 233 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
- 2006-08-13
- Last updated
- 2025-03-20
Frequently asked questions
- What is Marlon Kleinman's NPI number?
- Marlon Kleinman's National Provider Identifier (NPI) is 1255343521, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Marlon Kleinman's specialty?
- Marlon Kleinman is listed in the NPPES registry with a primary specialty of Hematology & Oncology Physician (Allopathic & Osteopathic Physicians).
- Where is Marlon Kleinman located?
- Marlon Kleinman's practice location on file with NPPES is 9300 Waukegan Road, Morton Grove, IL 60053.
- What is Marlon Kleinman's phone number?
- The practice phone number listed in the NPPES registry for Marlon Kleinman is (847) 675-3900.
- Does Marlon Kleinman accept Medicare?
- Marlon Kleinman is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Marlon Kleinman's NPI active?
- Yes — Marlon Kleinman's NPI (1255343521) is active in the NPPES registry as of the last update on 2025-03-20.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.