GREGORY P WARREN (MD) – Hematology & Oncology Physician, NPI 1154309243
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NPPES metrics only — not quality of care.
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Provider Addresses for GREGORY P WARREN (MD)
Cleveland Clinic Middleburg Heights Family Health Center, 17840, Bagley Road, Middleburg Heights, Cuyahoga County, Ohio, 44130, United States
CLEVELAND, OH 441303417
Phone: (440) 816-6051
Type: Location
PO BOX 638269
CINCINNATI, OH 452630001
Phone: (440) 816-6051
Type: Mailing
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
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Open Payments (CMS)
CMS reports 1 Open Payments records for all available years, with a total value of $18.
Total Amount is formed as General ($18) + Research ($0) + Ownership ($0) = $18.
Last reported payment date: 2023-01-31 • Largest payer in this snapshot: Amgen Inc. ($18).
Total Amount
$18
General + Research + Ownership
Payments
1
Total payment records
General Amount
$18
General payments
Research Amount
$0
Research funding
Ownership Amount
$0
Ownership interests
Ownership Count
0
Ownership records
Last Payment Date
2023-01-31
Latest reported date
Top Companies
Largest payers in this snapshot
| Company | Amount |
|---|---|
| Amgen Inc. | $18 |
Medicare Enrollment & Revalidation
Source: CMS public data · Not endorsed by CMS ·
Educational use only—not medical, billing, or legal advice.
No Medicare enrollment or revalidation data available for this provider in our database.
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 | 280 | 171 | $0 |
| 99232 | Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes | 60 | 25 | $0 |
| 99213 | Established patient office or other outpatient visit, 20-29 minutes | 31 | 31 | $0 |
| 99233 | Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes | 22 | 18 | $0 |
| 99222 | Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes | 17 | 17 | $0 |
Insurance plans in this area (ZIP 44130)
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Group practice members
| Name | Specialty | State |
|---|---|---|
| Gastroenterology, Internal Medicine | OH | |
| Nurse Practitioner | OH | |
| O B S T E T R I C S/ G Y N E C O L O G Y | OH | |
| Nurse Practitioner | OH | |
| Certified Registered Nurse Anesthetist (Crna) | OH | |
| Anesthesiology Assistant | CO | |
| - | OH | |
| Anesthesiology Assistant | OH | |
| - | OH | |
| - | OH |
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