Mark Ngo, M.D.
NPI 1982623468 · Hematology & Oncology Physician · Long Beach, CA
Enrolled with Medicare as Practitioner - Hematology/Oncology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Mark Ngo, M.D. is a Hematology & Oncology Physician provider in Long Beach, CA (NPI 1982623468).
Provider details
- NPI number
- 1982623468
- Entity type
- Individual
- Primary specialty
- Hematology & Oncology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- A73755 (CA)
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
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
3,889 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 Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 1,915 | $138 |
| Injection of Drug Or Substance Under Skin Or Into Muscle96372 | 579 | $16 |
| Infusion Into a Vein for Therapy, Prevention, Or Diagnosis, Additional Sequential Infusion, 1 Hour Or Less96367 | 419 | $32 |
| Administration of Chemotherapy Into Vein, 1 Hour Or Less96413 | 171 | $148 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes99232 | 153 | $79 |
| Administration of Non-Hormonal Anti-Neoplastic Chemotherapy Under Skin Or Into Muscle96401 | 120 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 38 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Letrozole | 164 | 43 |
| Apixabanbrand: Eliquis | 120 | 26 |
| Hydroxyurea | 93 | 23 |
| Dexamethasone | 83 | 16 |
| Ondansetron Hcl | 44 | 14 |
| Rivaroxabanbrand: Xarelto | 44 | — |
| Prednisone | 35 | — |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$495 across 21 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
- 2006-07-18
- Last updated
- 2010-02-20
Frequently asked questions
- What is Mark Ngo's NPI number?
- Mark Ngo's National Provider Identifier (NPI) is 1982623468, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mark Ngo's specialty?
- Mark Ngo is listed in the NPPES registry with a primary specialty of Hematology & Oncology Physician (Allopathic & Osteopathic Physicians).
- Where is Mark Ngo located?
- Mark Ngo's practice location on file with NPPES is 1043 Elm Ave, Long Beach, CA 90813-3271.
- What is Mark Ngo's phone number?
- The practice phone number listed in the NPPES registry for Mark Ngo is (562) 590-0345.
- Does Mark Ngo accept Medicare?
- Mark Ngo is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Mark Ngo's NPI active?
- Yes — Mark Ngo's NPI (1982623468) is active in the NPPES registry as of the last update on 2010-02-20.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.