Long Dang, M.D.
NPI 1346324613 · Gastroenterology Physician · Westminster, CA
Enrolled with Medicare as Practitioner - Gastroenterology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Long Dang, M.D. is a Gastroenterology Physician provider in Westminster, CA (NPI 1346324613).
Provider details
- NPI number
- 1346324613
- Entity type
- Individual
- Primary specialty
- Gastroenterology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- G80593 (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
7,348 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 35 Minutes99232 | 2,746 | $77 |
| Pathology Examination of Tissue Using a Microscope, Intermediate Complexity88305 | 756 | $40 |
| Initial Hospital Care With Straightforward Or Low-Level Medical Decision Making, If Using Time, at Least 55 Minutes99222 | 674 | $128 |
| Special Stained Specimen Slides to Examine Tissue Including Interpretation and Report88313 | 529 | $79 |
| Biopsy of Esophagus, Stomach, And/Or Upper Small Bowel Using a Flexible Endoscope43239 | 522 | $125 |
| Special Stained Specimen Slides to Identify Organisms Including Interpretation and Report |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 22 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Famotidine | 799 | 331 |
| Dexlansoprazolebrand: Dexlansoprazole Dr | 347 | 139 |
| Pantoprazole Sodium | 276 | 140 |
| Sodium, Potassium,mag Sulfatesbrand: Sod Sulf-Potass Sulf-Mag Sulf | 179 | 178 |
| Esomeprazole Magnesium | 171 | 70 |
| Sod Picosulf/Mag Ox/Citric Acbrand: Clenpiq | 166 | 164 |
| Peg3350/Sod Sulf,bicarb,cl/Kclbrand: Gavilyte-G |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$17,000 across 50 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
- 2006-10-24
- Last updated
- 2023-02-18
- Certified
- 2023-02-18
Frequently asked questions
- What is Long Dang's NPI number?
- Long Dang's National Provider Identifier (NPI) is 1346324613, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Long Dang's specialty?
- Long Dang is listed in the NPPES registry with a primary specialty of Gastroenterology Physician (Allopathic & Osteopathic Physicians).
- Where is Long Dang located?
- Long Dang's practice location on file with NPPES is 7891 Westminster Blvd, Westminster, CA 92683-4043.
- What is Long Dang's phone number?
- The practice phone number listed in the NPPES registry for Long Dang is (714) 839-9091.
- Does Long Dang accept Medicare?
- Long Dang is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Long Dang's NPI active?
- Yes — Long Dang's NPI (1346324613) is active in the NPPES registry as of the last update on 2023-02-18.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.