Nha Duong, DO
NPI 1336594514 · Gastroenterology Physician · Springfield, MA
Enrolled with Medicare as Practitioner - Gastroenterology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Nha Duong, DO is a Gastroenterology Physician provider in Springfield, MA (NPI 1336594514).
Provider details
- NPI number
- 1336594514
- Entity type
- Individual
- Primary specialty
- Gastroenterology PhysicianAllopathic & Osteopathic Physicians
- Credential
- DO
- Sex
- Male
- Sole proprietor
- No
- License
- 1015918 (MA)
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
10 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
626 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) |
|---|---|---|
| Initial Hospital Care With Straightforward Or Low-Level Medical Decision Making, If Using Time, at Least 55 Minutes99222 | 146 | $131 |
| Biopsy of Esophagus, Stomach, And/Or Upper Small Bowel Using a Flexible Endoscope43239 | 73 | $68 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 67 | $96 |
| New Patient Office Or Other Outpatient Visit With Moderate Level of Medical Decision Making, If Using Time, 45 Minutes Or More99204 | 54 | $131 |
| Ultrasound Guided Needle Aspiration Or Biopsy of Esophagus, Stomach, And/Or Upper Small Bowel Using a Flexible Endoscope43242 | 49 | $231 |
| Removal of Polyps Or Growths of Large Bowel Using an Endoscope With Mechanical Snare |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 7 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Omeprazole | 63 | 30 |
| Pantoprazole Sodium | 62 | 16 |
| Peg3350/Sod Sulf,bicarb,cl/Kclbrand: Gavilyte-G | 39 | 35 |
| Sodium Chloride/Nahco3/Kcl/Pegbrand: Peg 3350-Electrolyte | 24 | 22 |
| Cholestyramine (with Sugar)brand: Cholestyramine | 13 | — |
| Nadolol | 13 | — |
| Sodium, Potassium,mag Sulfates |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$623 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
- 2016-04-26
- Last updated
- 2023-08-31
- Certified
- 2023-08-31
Frequently asked questions
- What is Nha Duong's NPI number?
- Nha Duong's National Provider Identifier (NPI) is 1336594514, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Nha Duong's specialty?
- Nha Duong is listed in the NPPES registry with a primary specialty of Gastroenterology Physician (Allopathic & Osteopathic Physicians).
- Where is Nha Duong located?
- Nha Duong's practice location on file with NPPES is 3300 Main Street, Springfield, MA 01107-1112.
- What is Nha Duong's phone number?
- The practice phone number listed in the NPPES registry for Nha Duong is (413) 794-7364.
- Does Nha Duong accept Medicare?
- Nha Duong is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Nha Duong's NPI active?
- Yes — Nha Duong's NPI (1336594514) is active in the NPPES registry as of the last update on 2023-08-31.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.