Khanh Duong, MD
NPI 1225528466 · Internal Medicine Physician · Montclair, CA
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Khanh Duong, MD is a Internal Medicine Physician provider in Montclair, CA (NPI 1225528466).
Provider details
- NPI number
- 1225528466
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- BP10064981 (TX)
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
8 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
1,013 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) |
|---|---|---|
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 50 Minutes99233 | 460 | $118 |
| Initial Hospital Care With Moderate Level of Medical Decision Making, If Using Time, at Least 75 Minutes99223 | 223 | $173 |
| Hospital Discharge Day Management, More Than 30 Minutes99239 | 129 | $115 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 90 | $125 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 73 | $89 |
| Annual Wellness Visit, Includes a Personalized Prevention Plan of Service (pps), Subsequent VisitG0439 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 60 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 204 | 75 |
| Metformin Hcl | 120 | 36 |
| Amlodipine Besylate | 108 | 37 |
| Losartan Potassium | 101 | 30 |
| Gabapentin | 79 | 25 |
| Albuterol Sulfatebrand: Albuterol Sulfate Hfa | 56 | 27 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$7 across 1 record (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
- 2018-05-14
- Last updated
- 2022-02-25
- Certified
- 2022-02-25
Frequently asked questions
- What is Khanh Duong's NPI number?
- Khanh Duong's National Provider Identifier (NPI) is 1225528466, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Khanh Duong's specialty?
- Khanh Duong is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Khanh Duong located?
- Khanh Duong's practice location on file with NPPES is 9635 Monte Vista Ave Ste 208, Montclair, CA 91763-2235.
- What is Khanh Duong's phone number?
- The practice phone number listed in the NPPES registry for Khanh Duong is (909) 255-0199.
- Does Khanh Duong accept Medicare?
- Khanh Duong is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Khanh Duong's NPI active?
- Yes — Khanh Duong's NPI (1225528466) is active in the NPPES registry as of the last update on 2022-02-25.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.