Zheng Topp, M.D.
NPI 1023212784 · Medical Oncology Physician · Portland, OR
Enrolled with Medicare as Practitioner - Medical Oncology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Zheng Topp, M.D. is a Medical Oncology Physician provider in Portland, OR (NPI 1023212784).
Provider details
- NPI number
- 1023212784
- Entity type
- Individual
- Primary specialty
- Medical Oncology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Female
- Sole proprietor
- No
- License
- ME121637 (FL)
Specialties & taxonomies
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
19 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
672 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) |
|---|---|---|
| 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 | 299 | $17 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 165 | $132 |
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 162 | $185 |
| New Patient Office Or Other Outpatient Visit With a High Level of Medical Decision Making, If Using Time, 60 Minutes Or More99205 | 31 | $226 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 15 | $94 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 21 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Anastrozole | 483 | 160 |
| Letrozole | 197 | 73 |
| Tamoxifen Citrate | 128 | 44 |
| Alendronate Sodium | 81 | 23 |
| Exemestane | 53 | 20 |
| Dexamethasone | 42 | 16 |
| Gabapentin | 42 | 14 |
| Ribociclib Succinatebrand: Kisqali | 38 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$2,612 across 7 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
- 2007-06-14
- Last updated
- 2021-10-13
- Certified
- 2021-10-13
Frequently asked questions
- What is Zheng Topp's NPI number?
- Zheng Topp's National Provider Identifier (NPI) is 1023212784, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Zheng Topp's specialty?
- Zheng Topp is listed in the NPPES registry with a primary specialty of Medical Oncology Physician (Allopathic & Osteopathic Physicians).
- Where is Zheng Topp located?
- Zheng Topp's practice location on file with NPPES is 9135 Sw Barnes Rd Ste 261, Portland, OR 97225-6784.
- What is Zheng Topp's phone number?
- The practice phone number listed in the NPPES registry for Zheng Topp is (503) 216-6300.
- Does Zheng Topp accept Medicare?
- Zheng Topp is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Zheng Topp's NPI active?
- Yes — Zheng Topp's NPI (1023212784) is active in the NPPES registry as of the last update on 2021-10-13.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.