DR. ONPAN CHEUNG M.D., M.P.H.
NPI 1639195746
Internal Medicine - Gastroenterology in Denison, TX

Q: What is Onpan Cheung's NPI number?

The NPI number for Onpan Cheung is 1639195746. It was assigned to this individual provider in the NPPES registry on July 14, 2006.

Q: What is Onpan Cheung's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Gastroenterology, with taxonomy code 207RG0100X.

Q: When was this NPI record last updated?

The NPPES record for Onpan Cheung was last updated on August 26, 2023. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.

Active since July 14, 2006PECOS EnrolledAccepts Medicare Assignment

5016 US HWY 75, DENISON, TX 75020(903) 416-6389 Get Directions Write a Review

NPPES record last updated: August 26, 2023. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Aug 26, 2023, Mar 17, 2018, Feb 13, 2018 and 1 more (4 updates tracked since 2017).

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About Dr. Onpan Cheung M.d., M.p.h. NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

DR. ONPAN CHEUNG M.D., M.P.H. (NPI 1639195746) is an individual gastroenterology provider in Denison, Texas, licensed in Texas (U1248) and active in the NPI registry since July 2006. She is enrolled in Medicare PECOS, is affiliated with Alliancehealth Durant, and maintains a secondary practice location in Redlands.

NPPES Registry Identity

NPI1639195746

Entity TypeIndividualFemale

Primary Taxonomy207RG0100X

Provider Legal NameDR. ONPAN CHEUNGCredential: M.D., M.P.H.

Location Address5016 US HWY 75Denison, TX 75020-4584

Mailing Address5016 Us Hwy 75Denison, TX 75020-4584 · (903) 416-6389

Phone(903) 416-6389

Sole ProprietorYes

Medical School CMSOtherGraduated 2003

Enumeration DateJuly 14, 2006

Last NPPES UpdateAugust 26, 20234 updates tracked since enumeration

NPPES CertifiedAugust 26, 2023

✔ NPI 1639195746 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyInternal Medicine · GastroenterologyAllopathic & Osteopathic Physicians

Taxonomy Code207RG0100X

Licenses✔ Licensed in TX · U1248✔ Licensed in CA · FC1954189✔ Licensed in CA · A111454

Definition

An internist who specializes in diagnosis and treatment of diseases of the digestive organs including the stomach, bowels, liver and gallbladder. This specialist treats conditions such as abdominal pain, ulcers, diarrhea, cancer and jaundice and performs complex diagnostic and therapeutic procedures using endoscopes to visualize internal organs.

Also ListedInternal MedicineTaxonomy 207R00000X · License 0101238939 (VA)

5016 US HWY 75, Denison, TX 75020

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Secondary Practice Location 1

Location 1375 Terracina BlvdRedlands, CA 92373-3801 · Phone (909) 644-4063 · Fax (909) 335-1911

Other Identifiers 1

Other1265982375CA · Npi Group Number

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Ambetter from Arizona Complete Health, Ambetter from Arkansas Health & Wellness, Ambetter from Louisiana Healthcare Connections and more.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Dr. Onpan Cheung M.d., M.p.h. is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID3971783507

PECOS Enrollment IDI20230525002345

Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Medicare Billing Reassignments

Medicare enrollment records show Onpan Cheung reassigns Medicare billing to 5 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Texomacare

0.4 mi

Family Medicine

5012 S US HIGHWAY 75, SUITE 300
Denison, TX 75020

Reassigned Medicare billing, Texas enrollment
66 clinicians in this Medicare group

NPI 1740233592 (903) 416-6015

Texomacare Specialty Physicians

0.4 mi

Cardiovascular Disease

5012 S US HIGHWAY 75, SUITE 100
Denison, TX 75020

Reassigned Medicare billing, Texas enrollment
40 clinicians in this Medicare group

NPI 1548541733 (903) 416-1726

Beaver Medical Group P C

1,183 mi

Family Medicine

2 WEST FERN AVENUE
Redlands, CA 92373

Reassigned Medicare billing, California enrollment
635 clinicians in this Medicare group

NPI 1649503319 (909) 793-3311

San Bernardino Gastroenterology Associates Inc.

1,184 mi

Gastroenterology

375 TERRACINA BLVD
Redlands, CA 92373

Reassigned Medicare billing, California enrollment
10 clinicians in this Medicare group

NPI 1265982375 (909) 644-4063

Ace Gastroenterology Associates Inc

1,193 mi

Gastroenterology

2006 N. RIVERSIDE AVENUE
Rialto, CA 92377

Reassigned Medicare billing, California enrollment
3 clinicians in this Medicare group

NPI 1447671714 (909) 881-3032

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Areas of Expertise CMS Part B claims 11

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes 99233

Follow-up hospital inpatient care per day typically involves a 35-minute check-up by your healthcare provider. This service includes monitoring your health progress, adjusting your treatment plan if needed, and answering any questions you may have about your condition or care.

597 services127 patients

Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more 99214

This is a routine check-up for patients who have previously visited our clinic. It involves a comprehensive review of your health and any ongoing treatments. The consultation lasts between 30-39 minutes, allowing enough time to discuss any concerns.

352 services240 patients

New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more 99204

This is a first-time office or outpatient visit lasting between 45-59 minutes. The healthcare provider evaluates your health, discusses your medical history, and may suggest further tests or treatments. It's an opportunity to ask questions and understand your health better.

174 services174 patients

Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes 99223

Initial hospital inpatient care per day, typically 70 minutes, refers to the daily medical service provided to patients admitted to the hospital. This includes a comprehensive evaluation, diagnosis, treatment plan, and monitoring of your health condition. It ensures your well-being during your hospital stay.

143 services133 patients

Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope 43239

This procedure involves using a thin, flexible tube with a light and camera, known as an endoscope, to examine the esophagus, stomach, and upper part of the small intestine. Small tissue samples are taken for further examination to help diagnose various conditions.

121 services115 patients

Removal of polyps or growths of large bowel using an endoscope with mechanical snare 45385

This procedure involves using a thin, flexible tube called an endoscope to examine the large bowel. If any abnormal growths or polyps are found, a tool called a mechanical snare is used to remove them. This is a common method to prevent potential health issues.

91 services90 patients

Hospital Affiliations CMS Care Compare 3

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

Alliancehealth Durant

Acute Care Hospitals · Durant, OK

1/5 CMS rating

OwnershipProprietary

CMS Certification Number370014

Location1800 University BoulevardDurant, OK 74702 · Bryan County

Emergency services Birthing friendly

Alliancehealth Madill

Critical Access Hospitals · Madill, OK

OwnershipVoluntary non-profit - Other

CMS Certification Number371326

Location901 S 5th AveMadill, OK 73446 · Marshall County

Emergency services

Texoma Medical Center

Acute Care Hospitals · Denison, TX

3/5 CMS rating

OwnershipProprietary

CMS Certification Number450324

Location5016 S Us Highway 75Denison, TX 75020 · Grayson County

Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 75020 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient

$126.40 typical visit price

range $54.84 – $166.88

Typical copayment $31.60 (range $13.71 – $41.72)

Most-billed visit code 99204

Established Patient

$97.05 typical visit price

range $17.52 – $136.11

Typical copayment $24.26 (range $4.38 – $34.02)

Most-billed visit code 99214

Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Other Providers at the Same Location NPPES 20

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

SAAD HUSSAIN M.D.

Radiology (Vascular & Interventional Radiology)