Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

WEI-NING SUN
NPI 1780189506
Internal Medicine in Houston, TX

Active since March 25, 2018PECOS Enrolled
4101 GREENBRIAR DR STE 122G, HOUSTON, TX 77098(713) 235-1101(573) 240-9818 Get Directions Write a Review

NPPES record last updated: October 29, 2026. Verified against the NPPES registry weekly; last sync: November 01, 2026.

Record update history: Oct 29, 2026, May 12, 2022, Mar 25, 2018 (3 updates tracked since 2018).

About Wei-ning Sun NPPES

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

WEI-NING SUN (NPI 1780189506) is an individual internal medicine provider in Houston, Texas, licensed in Texas (T0638) and active in the NPI registry since March 2018. He is enrolled in Medicare PECOS, is affiliated with Houston Methodist Hospital, and is a graduate of Other (2018).

NPPES Registry Identity

NPI1780189506
Entity TypeIndividualMale
Primary Taxonomy207R00000X
Provider Legal NameWEI-NING SUN
Location Address4101 GREENBRIAR DR STE 122GHouston, TX 77098-5266
Mailing Address4101 Greenbriar Dr Ste 122gHouston, TX 77098-5266 · (713) 235-1101 · Fax (573) 240-9818
Fax(573) 240-9818
Sole ProprietorNo
Medical School CMSOtherGraduated 2018
Enumeration DateMarch 25, 2018
Last NPPES UpdateOctober 29, 20263 updates tracked since enumeration
NPPES CertifiedOctober 29, 2026
✔ NPI 1780189506 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207R00000X
License✔ Licensed in TX · T0638
Definition
A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.
4101 GREENBRIAR DR STE 122G, Houston, TX 77098

Accepted 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

Wei-ning Sun 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 ID5294132056
PECOS Enrollment IDI20210921001638
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 Reassignment

Medicare enrollment records show Wei-ning Sun reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Internal Medicine
6565 FANNIN ST
Houston, TX 77030
  • Reassigned Medicare billing, Texas enrollment
  • 45 clinicians in this Medicare group

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 6

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.
698 services245 patients
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes 99232
Follow-up hospital inpatient care involves daily check-ups while you're admitted in the hospital. Typically, a healthcare provider spends about 25 minutes each day reviewing your condition, adjusting treatment if needed, and answering any questions you might have.
451 services142 patients
Hospital discharge day management, more than 30 minutes 99239
Hospital discharge day management over 30 minutes involves a detailed process to ensure a smooth transition from hospital to home. It includes final examinations, discussion of your hospital stay, post-discharge instructions, and coordinating follow-up care.
219 services205 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.
115 services112 patients
Advance care planning, first 30 minutes 99497
Advance care planning is a process where you discuss your healthcare preferences with your doctor. This conversation, lasting up to 30 minutes, helps ensure your wishes are respected if you're unable to communicate them in the future. It's about your care, your way.
113 services109 patients
Critical care, first 30-74 minutes 99291
Critical care involves immediate and constant attention by a team of specially-trained health professionals. It's for patients with life-threatening conditions, requiring first 30-74 minutes of intense monitoring and treatment.
31 services31 patients

Hospital Affiliations CMS Care Compare 2

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

Houston Methodist Hospital

Acute Care Hospitals · Houston, TX
5/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number450358
Location6565 FanninHouston, TX 77030 · Harris County
Emergency services Birthing friendly

Houston Methodist West Hospital

Acute Care Hospitals · Houston, TX
5/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number670077
Location18500 Katy FreewayHouston, TX 77094 · Harris County
Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 77098 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
$134.06 typical visit price
range $58.24 – $176.98
Typical copayment $33.51 (range $14.56 – $44.24)
Most-billed visit code 99204
Established Patient
$102.71 typical visit price
range $18.60 – $143.93
Typical copayment $25.67 (range $4.65 – $35.98)
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.

Referred Medical Equipment & Supplies CMS DME claims 2

Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.

Portable gaseous oxygen system, rental; includes portable container, regulator, flowmeter, humidifier, cannula or mask, and tubing E0431
DME-Oxygen and Supplies · category DC000N
1 supplier11 claims11 services$15.18 avg. paid by Medicare
Oxygen concentrator, single delivery port, capable of delivering 85 percent or greater oxygen concentration at the prescribed flow rate E1390
DME-Oxygen and Supplies · category DC002N
1 supplier11 claims11 services$67.12 avg. paid by Medicare
Dollar amounts are the average Medicare paid the supplier per service. They are not the cost to the patient.

Other Providers at the Same Location NPPES 6

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

Internal Medicine
4101 GREENBRIAR DR STE 122G
HOUSTON, TX 77098
Internal Medicine
4101 GREENBRIAR DR STE 122G
HOUSTON, TX 77098
Internal Medicine
4101 GREENBRIAR DR STE 122G
HOUSTON, TX 77098
Internal Medicine
4101 GREENBRIAR DR STE 122G
HOUSTON, TX 77098
Internal Medicine
4101 GREENBRIAR DR STE 122G
HOUSTON, TX 77098
Internal Medicine
4101 GREENBRIAR DR STE 122G
HOUSTON, TX 77098

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Wei-ning Sun's NPI number?

The NPI number for Wei-ning Sun is 1780189506. It was assigned to this individual provider in the NPPES registry on March 25, 2018.

Where is Wei-ning Sun located?

Wei-ning Sun practices at 4101 Greenbriar Dr Ste 122G, Houston, TX 77098. The listed phone number is (713) 235-1101.

What is Wei-ning Sun's specialty?

The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.

Is Wei-ning Sun enrolled in Medicare?

Yes. Wei-ning Sun is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

Which organization bills Medicare for Wei-ning Sun's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Wei-ning Sun reassigns Medicare benefits to Medical Center Hospitalist Associates PLLC (Houston, TX). The reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Wei-ning Sun's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Wei-ning Sun accept?

Health plans from Blue Cross and Blue Shield of Texas list Wei-ning Sun as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

Is Wei-ning Sun affiliated with any hospitals?

According to CMS data, Wei-ning Sun is affiliated with Houston Methodist Hospital and Houston Methodist West Hospital.

When was this NPI record last updated?

The NPPES record for Wei-ning Sun was last updated on October 29, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 7 days 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.