MR. DAVID B LEFF (DO) – Gastroenterology Physician, NPI 1619956505
Gastroenterology Physician
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
431 GASTROENTEROLOGY in AZ
Provider Addresses for MR. DAVID B LEFF (DO)
3638 E SOUTHERN AVE STE C101
MESA, AZ 852062563
Phone: (480) 564-3763
Fax: (480) 716-3723
Type: Mailing
East Southern Avenue, Mesa, Maricopa County, Arizona, 85220, United States
STE C 108
MESA, AZ 852062563
Phone: (480) 834-0771
Fax: (480) 834-1136
Type: Mailing
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
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Open Payments (CMS)
CMS reports 350 Open Payments records for all available years, with a total value of $97,000.
Total Amount is formed as General ($97,000) + Research ($0) + Ownership ($0) = $97,000.
Last reported payment date: 2024-12-30 • Largest payer in this snapshot: ABBVIE INC. ($42,191).
Total Amount
$97,000
General + Research + Ownership
Payments
350
Total payment records
General Amount
$97,000
General payments
Research Amount
$0
Research funding
Ownership Amount
$0
Ownership interests
Ownership Count
0
Ownership records
Last Payment Date
2024-12-30
Latest reported date
Top Companies
Largest payers in this snapshot
| Company | Amount |
|---|---|
| ABBVIE INC. | $42,191 |
| GENZYME CORPORATION | $26,259 |
| Regeneron Healthcare Solutions, Inc. | $15,288 |
| Madrigal Pharmaceuticals | $3,571 |
| Ardelyx, Inc. | $2,394 |
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: 2012-02-24
PECOS data refreshed: 2026-05-27
Medicare revalidation (CMS due date list)
Due date not assigned yet
CMS is tracking this Medicare enrollment for revalidation, but has not published a due date.
Enrollment records
1
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 |
|---|---|---|---|---|
| I20120224000200 | I | Gastroenterology | AZ | 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 | 278 | 188 | $0 |
| 99204 | New patient office or other outpatient visit, 45-59 minutes | 119 | 119 | $0 |
| 99233 | Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes | 86 | 51 | $0 |
| 99223 | Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes | 66 | 63 | $0 |
| 45385 | Removal of polyps or growths of large bowel using an endoscope with mechanical snare | 58 | 58 | $0 |
Insurance plans in this area (ZIP 85206)
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Provider's Procedures
| Specialty | Practice State | HCPCS Code | Description | Service Count | Beneficiary Count |
|---|---|---|---|---|---|
| GASTROENTEROLOGY | AZ | 43235 | Diagnostic examination of esophagus, stomach, and/or upper small bowel using an endoscope | 14 | 14 |
| GASTROENTEROLOGY | AZ | 45378 | Diagnostic examination of large bowel using an endoscope | 25 | 25 |
| GASTROENTEROLOGY | AZ | 45385 | Removal of polyps or growths of large bowel using an endoscope | 44 | 44 |
Group practice members
| Name | Specialty | State |
|---|---|---|
| Family Practice | AZ | |
| - | AZ | |
| Nurse Practitioner | AZ | |
| Physician Assistant | AZ | |
| Internal Medicine, Pediatric Medicine | AZ | |
| Nurse Practitioner | AZ | |
| Gastroenterology, Internal Medicine | AZ | |
| Pulmonary Disease, Critical Care (Intensivists) | AZ | |
| Internal Medicine, Gastroenterology | AZ | |
| G A S T R O E N T E R O L O G Y | AZ |
Reviews
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