David Weng, MD
NPI 1831154731 · Medical Oncology Physician · Chevy Chase, MD
Enrolled with Medicare as Practitioner - Medical Oncology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
David Weng, MD is a Medical Oncology Physician provider in Chevy Chase, MD (NPI 1831154731).
Provider details
- NPI number
- 1831154731
- Entity type
- Individual
- Primary specialty
- Medical Oncology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- Yes
- License
- C55735 (CA)
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
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
7,560 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) |
|---|---|---|
| Complete Blood Cell Count (red Cells, White Blood Cell, Platelets), Automated Test and Automated Differential White Blood Cell Count85025 | 1,360 | $8 |
| Blood Test, Comprehensive Group of Blood Chemicals80053 | 1,169 | $10 |
| 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 | 755 | $17 |
| Administration of Chemotherapy Into Vein, 1 Hour Or Less96413 | 445 | $132 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 355 | $92 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 48 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Anastrozole | 245 | 74 |
| Letrozole | 102 | 31 |
| Apixabanbrand: Eliquis | 75 | 20 |
| Tamoxifen Citrate | 65 | 18 |
| Levothyroxine Sodium | 57 | 12 |
| Oxycodone Hcl | 51 | 18 |
| Exemestane | 51 | — |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$3,845 across 38 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
- 2006-04-20
- Last updated
- 2024-12-13
- Certified
- 2024-12-13
Frequently asked questions
- What is David Weng's NPI number?
- David Weng's National Provider Identifier (NPI) is 1831154731, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is David Weng's specialty?
- David Weng is listed in the NPPES registry with a primary specialty of Medical Oncology Physician (Allopathic & Osteopathic Physicians).
- Where is David Weng located?
- David Weng's practice location on file with NPPES is 9017 Spring Hill Ln, Chevy Chase, MD 20815-5633.
- What is David Weng's phone number?
- The practice phone number listed in the NPPES registry for David Weng is (301) 652-7370.
- Does David Weng accept Medicare?
- David Weng is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is David Weng's NPI active?
- Yes — David Weng's NPI (1831154731) is active in the NPPES registry as of the last update on 2024-12-13.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.