Onpan Cheung, M.D., M.P.H.
NPI 1639195746 · Gastroenterology Physician · Denison, TX
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Onpan Cheung, M.D., M.P.H. is a Gastroenterology Physician provider in Denison, TX (NPI 1639195746).
Provider details
- NPI number
- 1639195746
- Entity type
- Individual
- Primary specialty
- Gastroenterology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D., M.P.H.
- Sex
- Female
- Sole proprietor
- Yes
- License
- FC1954189 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
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
19 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
2 documented practice locations
- Medicare service volume (vs. specialty peers)25% of score
1,638 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 | 597 | $111 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 352 | $122 |
| New Patient Office Or Other Outpatient Visit With Moderate Level of Medical Decision Making, If Using Time, 45 Minutes Or More99204 | 174 | $159 |
| Initial Hospital Care With Moderate Level of Medical Decision Making, If Using Time, at Least 75 Minutes99223 | 143 | $165 |
| Biopsy of Esophagus, Stomach, And/Or Upper Small Bowel Using a Flexible Endoscope43239 | 121 | $62 |
| 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 · 11 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Omeprazole | 180 | 45 |
| Pantoprazole Sodium | 131 | 44 |
| Peg 3350/Sod Sulf,chlr/Pot/Magbrand: Suflave | 58 | 57 |
| Famotidine | 42 | — |
| Mesalamine | 24 | — |
| Dicyclomine Hcl | 17 | — |
| Linaclotidebrand: Linzess | 16 | — |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$52 across 3 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 (1)
- 375 Terracina BlvdRedlands, CA 92373-3801Phone: (909) 644-4063Fax: (909) 335-1911
Registry dates
- Enumerated
- 2006-07-14
- Last updated
- 2023-08-26
- Certified
- 2023-08-26
Frequently asked questions
- What is Onpan Cheung's NPI number?
- Onpan Cheung's National Provider Identifier (NPI) is 1639195746, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Onpan Cheung's specialty?
- Onpan Cheung is listed in the NPPES registry with a primary specialty of Gastroenterology Physician (Allopathic & Osteopathic Physicians).
- Where is Onpan Cheung located?
- Onpan Cheung's practice location on file with NPPES is 5016 US Hwy 75, Denison, TX 75020-4584.
- What is Onpan Cheung's phone number?
- The practice phone number listed in the NPPES registry for Onpan Cheung is (903) 416-6389.
- Does Onpan Cheung accept Medicare?
- Onpan Cheung is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Onpan Cheung's NPI active?
- Yes — Onpan Cheung's NPI (1639195746) is active in the NPPES registry as of the last update on 2023-08-26.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.