Mark Vellek, M.D.
NPI 1063409688 · Hematology & Oncology Physician · Las Vegas, NV
Enrolled with Medicare as Practitioner - Hematology/Oncology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Mark Vellek, M.D. is a Hematology & Oncology Physician provider in Las Vegas, NV (NPI 1063409688).
Provider details
- NPI number
- 1063409688
- Entity type
- Individual
- Primary specialty
- Hematology & Oncology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- C2194 (KY)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
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
3 documented practice locations
- Medicare service volume (vs. specialty peers)25% of score
1,134 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 | 898 | $90 |
| New Patient Office Or Other Outpatient Visit With Moderate Level of Medical Decision Making, If Using Time, 45 Minutes Or More99204 | 87 | $124 |
| Visit Complexity Inherent to Evaluation and Management Associated With Medical Care Services That Serve As the Continuing Focal Point for All Needed Health Care Services And/Or With Medical Care Services That Are Part of Ongoing Care Related to a Patient'SG2211 | 53 | $15 |
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 52 | $134 |
| New Patient Office Or Other Outpatient Visit With a High Level of Medical Decision Making, If Using Time, 60 Minutes Or More99205 | 22 | $169 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 24 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Anastrozole | 91 | 34 |
| Prochlorperazine Maleate | 86 | 72 |
| Dexamethasone | 67 | 40 |
| Prednisone | 62 | 27 |
| Ondansetron Hcl | 52 | 47 |
| Lenalidomide | 49 | — |
| Oxycodone Hcl | 46 | 14 |
| Ondansetronbrand: Ondansetron Odt |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$1,115 across 61 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
Additional practice locations (2)
- 803 Poplar StMurray, KY 42071-2432Phone: (270) 762-1597
- 1705 E BroadwaySuite 100Columbia, MO 65201-5852Phone: (573) 874-7800Fax: (573) 443-3627
Registry dates
- Enumerated
- 2005-09-29
- Last updated
- 2023-12-12
- Certified
- 2023-12-12
Frequently asked questions
- What is Mark Vellek's NPI number?
- Mark Vellek's National Provider Identifier (NPI) is 1063409688, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mark Vellek's specialty?
- Mark Vellek is listed in the NPPES registry with a primary specialty of Hematology & Oncology Physician (Allopathic & Osteopathic Physicians).
- Where is Mark Vellek located?
- Mark Vellek's practice location on file with NPPES is 3131 La Canada St Ste 140, Las Vegas, NV 89169-2579.
- What is Mark Vellek's phone number?
- The practice phone number listed in the NPPES registry for Mark Vellek is (702) 933-9400.
- Does Mark Vellek accept Medicare?
- Mark Vellek is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Mark Vellek's NPI active?
- Yes — Mark Vellek's NPI (1063409688) is active in the NPPES registry as of the last update on 2023-12-12.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.