Nayyar Siddique, MD
NPI 1497890610 · Hematology & Oncology Physician · Oceanside, CA
Enrolled with Medicare as Practitioner - Hematology/Oncology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Nayyar Siddique, MD is a Hematology & Oncology Physician provider in Oceanside, CA (NPI 1497890610).
Provider details
- NPI number
- 1497890610
- Entity type
- Individual
- Primary specialty
- Hematology & Oncology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- LT20873 (ND)
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
516 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 | 129 | $8 |
| Insertion of Needle Into Vein for Collection of Blood Sample36415 | 120 | $9 |
| Injection of Drug Or Substance Under Skin Or Into Muscle96372 | 69 | $15 |
| Blood Test, Comprehensive Group of Blood Chemicals80053 | 44 | $10 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 40 | $92 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 30 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 16 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Letrozole | 67 | 28 |
| Apixabanbrand: Eliquis | 34 | — |
| Gabapentin | 27 | — |
| Prednisone | 26 | 11 |
| Exemestane | 25 | — |
| Prochlorperazine Maleate | 24 | 16 |
| Hydroxyurea | 23 | — |
| Imatinib Mesylate |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$1,287 across 18 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
- 2007-02-21
- Last updated
- 2024-04-18
- Certified
- 2024-04-18
Frequently asked questions
- What is Nayyar Siddique's NPI number?
- Nayyar Siddique's National Provider Identifier (NPI) is 1497890610, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Nayyar Siddique's specialty?
- Nayyar Siddique is listed in the NPPES registry with a primary specialty of Hematology & Oncology Physician (Allopathic & Osteopathic Physicians).
- Where is Nayyar Siddique located?
- Nayyar Siddique's practice location on file with NPPES is 3617 Vista Way, Oceanside, CA 92056-4522.
- What is Nayyar Siddique's phone number?
- The practice phone number listed in the NPPES registry for Nayyar Siddique is (760) 758-5770.
- Does Nayyar Siddique accept Medicare?
- Nayyar Siddique is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Nayyar Siddique's NPI active?
- Yes — Nayyar Siddique's NPI (1497890610) is active in the NPPES registry as of the last update on 2024-04-18.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.