Diem Ngo, M.D
NPI 1538542287 · Family Medicine Physician · Moreno Valley, CA
Enrolled with Medicare as Practitioner - Family Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Diem Ngo, M.D is a Family Medicine Physician provider in Moreno Valley, CA (NPI 1538542287).
Provider details
- NPI number
- 1538542287
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D
- Sex
- Female
- Sole proprietor
- Yes
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Student, Health Care
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure33% of score
10 yrs in NPPES registry
- Profile completeness33% of score
83% of core fields populated
- Practice footprint20% of score
1 documented practice location
- Open Payments transparency13% of score
Has Open Payments disclosures (2024)
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 methodology.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 17 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 115 | 49 |
| Metformin Hcl | 67 | 23 |
| Amlodipine Besylate | 54 | 20 |
| Losartan Potassium | 44 | 17 |
| Lisinopril | 29 | 14 |
| Metoprolol Succinate | 25 | 12 |
| Albuterol Sulfate |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$250 across 2 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
- 2015-06-30
- Last updated
- 2024-01-14
- Certified
- 2024-01-14
Frequently asked questions
- What is Diem Ngo's NPI number?
- Diem Ngo's National Provider Identifier (NPI) is 1538542287, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Diem Ngo's specialty?
- Diem Ngo is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Diem Ngo located?
- Diem Ngo's practice location on file with NPPES is 26520 Cactus Ave, Moreno Valley, CA 92555-3927.
- What is Diem Ngo's phone number?
- The practice phone number listed in the NPPES registry for Diem Ngo is (951) 486-4000.
- Does Diem Ngo accept Medicare?
- Diem Ngo is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Diem Ngo's NPI active?
- Yes — Diem Ngo's NPI (1538542287) is active in the NPPES registry as of the last update on 2024-01-14.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.