Uladzislau Naidzionak, M.D.
NPI 1023246212 · Internal Medicine Physician · San Diego, CA
Enrolled with Medicare as Practitioner - Medical Oncology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Uladzislau Naidzionak, M.D. is a Internal Medicine Physician provider in San Diego, CA (NPI 1023246212).
Provider details
- NPI number
- 1023246212
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- Yes
- License
- 2009012274 (MO)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
17 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
3,668 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) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 840 | $103 |
| Complete Blood Cell Count (red Cells, White Blood Cell, Platelets), Automated Test and Automated Differential White Blood Cell Count85025 | 835 | $8 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes99232 | 403 | $85 |
| Administration of Additional New Drug Or Substance Into Vein Using Push Technique96411 | 297 | $66 |
| Injection of Drug Or Substance Under Skin Or Into Muscle96372 | 270 | $17 |
| Declotting of Central Venous Tube36593 | 230 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 23 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Ondansetron Hcl | 58 | 26 |
| Anastrozole | 37 | — |
| Lenalidomide | 30 | — |
| Apalutamidebrand: Erleada | 29 | — |
| Ribociclib Succinatebrand: Kisqali | 26 | — |
| Abemaciclibbrand: Verzenio | 25 | — |
| Omeprazole | 21 | — |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$13,925 across 109 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
- 2009-06-25
- Last updated
- 2026-02-17
- Certified
- 2026-02-17
Frequently asked questions
- What is Uladzislau Naidzionak's NPI number?
- Uladzislau Naidzionak's National Provider Identifier (NPI) is 1023246212, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Uladzislau Naidzionak's specialty?
- Uladzislau Naidzionak is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Uladzislau Naidzionak located?
- Uladzislau Naidzionak's practice location on file with NPPES is 7930 Frost St Ste 405, San Diego, CA 92123-2759.
- What is Uladzislau Naidzionak's phone number?
- The practice phone number listed in the NPPES registry for Uladzislau Naidzionak is (858) 571-2811.
- Does Uladzislau Naidzionak accept Medicare?
- Uladzislau Naidzionak is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Uladzislau Naidzionak's NPI active?
- Yes — Uladzislau Naidzionak's NPI (1023246212) is active in the NPPES registry as of the last update on 2026-02-17.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.