Chi Duong, DO
NPI 1285642108 · Internal Medicine Physician · Phoenix, AZ
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Chi Duong, DO is a Internal Medicine Physician provider in Phoenix, AZ (NPI 1285642108).
Provider details
- NPI number
- 1285642108
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- DO
- Sex
- Female
- Sole proprietor
- No
- License
- 3424 (AZ)
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
3 documented practice locations
- Medicare service volume (vs. specialty peers)25% of score
1,480 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) |
|---|---|---|
| Insertion of Needle Into Vein for Collection of Blood Sample36415 | 456 | $7 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 406 | $124 |
| Visit Complexity Inherent to Evaluation and Management Associated With Medical Care Services That Serve As the Continuing Focal Point for All Needed Health Care Services And/Or With Medical Care Services That Are Part of Ongoing Care Related to a Patient'SG2211 | 206 | $16 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 112 | $88 |
| Administration of Influenza Virus VaccineG0008 | 94 | $31 |
| Injection of Drug Or Substance Under Skin Or Into Muscle |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 50 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Rosuvastatin Calcium | 101 | 46 |
| Levothyroxine Sodium | 76 | 30 |
| Montelukast Sodium | 64 | 33 |
| Amlodipine Besylate | 53 | 24 |
| Atorvastatin Calcium | 47 | 24 |
| Zolpidem Tartrate | 44 | 14 |
| Trazodone Hcl |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$295 across 5 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
Additional practice locations (2)
- 7150 E Camelback RdSuite 105Scottsdale, AZ 85251-1200Phone: (602) 218-4072Fax: (602) 218-4076
- 350 N Wilmot RdTucson, AZ 85711-2602Phone: (520) 296-3211
Registry dates
- Enumerated
- 2006-08-04
- Last updated
- 2025-02-05
- Certified
- 2025-02-05
Frequently asked questions
- What is Chi Duong's NPI number?
- Chi Duong's National Provider Identifier (NPI) is 1285642108, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Chi Duong's specialty?
- Chi Duong is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Chi Duong located?
- Chi Duong's practice location on file with NPPES is 4840 E Indian School Rd Ste 101, Phoenix, AZ 85018-5500.
- What is Chi Duong's phone number?
- The practice phone number listed in the NPPES registry for Chi Duong is (602) 522-1900.
- Does Chi Duong accept Medicare?
- Chi Duong is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Chi Duong's NPI active?
- Yes — Chi Duong's NPI (1285642108) is active in the NPPES registry as of the last update on 2025-02-05.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.