MARK J VELLEK (M.D.) – Hematology & Oncology Physician, NPI 1063409688
Hematology & Oncology Physician
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
310 HEMATOLOGY/ONCOLOGY in MO
Loading map...
Provider Addresses for MARK J VELLEK (M.D.)
1705, East Broadway, Strollway, Columbia, Boone County, Missouri, 65201, United States
SUITE 100
COLUMBIA, MO 652015852
Phone: (573) 874-7800
Fax: (573) 443-3627
Type: Mailing
3131 LA CANADA ST STE 140
LAS VEGAS, NV 891692579
Phone: (702) 933-9400
Fax: (702) 933-9444
Type: Location
1705 E Broadway
Suite 100
Columbia, MO 652015852
Phone: (573) 874-7800
Fax: (573) 443-3627
Type: Location
803 Poplar St
Murray, KY 420712432
Phone: (270) 762-1597
Type: Location
PO BOX 98978
LAS VEGAS, NV 891938978
Phone: (702) 216-3346
Type: Mailing
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
Loading prescription activity...
Open Payments (CMS)
CMS reports 76 Open Payments records for all available years, with a total value of $1,438.
Total Amount is formed as General ($1,438) + Research ($0) + Ownership ($0) = $1,438.
Last reported payment date: 2024-12-16 • Largest payer in this snapshot: PFIZER INC. ($178).
Total Amount
$1,438
General + Research + Ownership
Payments
76
Total payment records
General Amount
$1,438
General payments
Research Amount
$0
Research funding
Ownership Amount
$0
Ownership interests
Ownership Count
0
Ownership records
Last Payment Date
2024-12-16
Latest reported date
Top Companies
Largest payers in this snapshot
| Company | Amount |
|---|---|
| PFIZER INC. | $178 |
| Novartis Pharmaceuticals Corporation | $142 |
| ABBVIE INC. | $81 |
| AstraZeneca Pharmaceuticals LP | $80 |
| Janssen Biotech, Inc. | $73 |
Medicare Enrollment & Revalidation
Source: CMS public data · Not endorsed by CMS ·
Educational use only—not medical, billing, or legal advice.
PECOS enrollment status
Participating (accepts Medicare assignment)
Enrollment effective: 2024-01-29
PECOS data refreshed: 2026-05-27
Medicare revalidation (CMS due date list)
Due date not assigned yet
CMS is tracking 3 Medicare enrollment records; no due dates published yet.
Enrollment records
3
Earliest due date
Not assigned (TBD)
CMS data updated
2026-06-01
Revalidation progress
- Medicare enrolled
- On CMS revalidation list
- Due date assigned
- Revalidate in PECOS
CMS enrollment records
| Enrollment ID | Type | Specialty | State | Due date |
|---|---|---|---|---|
| I20210928001077 | I | Hematology/Oncology | NV | TBD |
| I20230213000510 | I | Medical Oncology | OR | TBD |
| I20240129000105 | I | Hematology/Oncology | KY | TBD |
What to do next
- No action required while the due date shows TBD.
- Check the CMS Revalidation Lookup Tool periodically — CMS updates the list about every 60 days.
- Do not submit a revalidation application in PECOS until CMS publishes a concrete due date.
Prepare CMS-855 application → · Look up this NPI in PECOS → · Verify on CMS PECOS
Medicare Utilization (FFS)
Source: CMS public data · Not endorsed by CMS · Beneficiary counts under 11 are suppressed in source data ·
Educational use only—not medical, billing, or legal advice.
Top Medicare procedures (2023) · refreshed 2026-05-27
| HCPCS | Description | Services | Beneficiaries | Medicare allowed |
|---|---|---|---|---|
| 99214 | Established patient office or other outpatient visit, 30-39 minutes | 275 | 163 | $0 |
| 99215 | Established patient office or other outpatient visit, 40-54 minutes | 46 | 39 | $0 |
| 99204 | New patient office or other outpatient visit, 45-59 minutes | 32 | 32 | $0 |
| 99205 | New patient office or other outpatient visit, 60-74 minutes | 27 | 27 | $0 |
| 99213 | Established patient office or other outpatient visit, 20-29 minutes | 17 | 16 | $0 |
Insurance plans in this area (ZIP 65201)
Loading plans...
Provider's Procedures
| Specialty | Practice State | HCPCS Code | Description | Service Count | Beneficiary Count |
|---|---|---|---|---|---|
| HEMATOLOGY/ONCOLOGY | MO | 74177 | CT scan of abdomen and pelvis with contrast | 97 | 70 |
| HEMATOLOGY/ONCOLOGY | MO | 81002 | Urinalysis, manual test | 77 | 15 |
| HEMATOLOGY/ONCOLOGY | MO | 96375 | Injection of different drug or substance into a vein for therapy, diagnosis, or prevention | 497 | 88 |
| HEMATOLOGY/ONCOLOGY | MO | 96415 | Infusion of chemotherapy into a vein | 112 | 36 |
Group practice members
| Name | Specialty | State |
|---|---|---|
| P A T H O L O G Y | KY | |
| - | KY | |
| Nurse Practitioner | OH | |
| Nurse Practitioner | KY | |
| Nurse Practitioner | KY | |
| Nurse Practitioner | KY | |
| O B S T E T R I C S/ G Y N E C O L O G Y | KY | |
| General Surgery | KY | |
| - | KY | |
| Orthopedic Surgery | KY |
Reviews
All reviews are moderated before publication. Reviews reflect users' opinions; we do not verify the accuracy of individual reviews.
No reviews yet. Be the first to share your experience — your opinion helps families compare providers.