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DR. CHI SI CHOI M.D.
NPI 1336182294
Internal Medicine - Cardiovascular Disease in Houston, TX

Active since June 14, 2006PECOS EnrolledAccepts Medicare Assignment
3502 LIBERTY RD, HOUSTON, TX 77026(713) 993-6000(713) 497-5546 Get Directions Write a Review

NPPES record last updated: January 15, 2024. Verified against the NPPES registry weekly; last sync: November 01, 2026.

Record update history: Dec 20, 2022, Oct 17, 2018, Feb 22, 2017 (3 updates tracked since 2017).

About Dr. Chi Si Choi M.d. NPPES

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

DR. CHI SI CHOI M.D. (NPI 1336182294) is an individual cardiovascular disease provider in Houston, Texas, licensed in Texas (F5863) and active in the NPI registry since June 2006. He is enrolled in Medicare PECOS, is affiliated with Memorial Hermann Hospital System, and is a graduate of Other (1970).

NPPES Registry Identity

NPI1336182294
Entity TypeIndividualMale
Primary Taxonomy207RC0000X
Provider Legal NameDR. CHI SI CHOICredential: M.D.
Location Address3502 LIBERTY RDHouston, TX 77026-6243
Mailing Address3502 Liberty RdHouston, TX 77026-6243 · (713) 993-6000 · Fax (713) 497-5546
Phone(713) 993-6000
Fax(713) 497-5546
Sole ProprietorYes
Medical School CMSOtherGraduated 1970
Enumeration DateJune 14, 2006
Last NPPES UpdateJanuary 15, 20243 updates tracked since enumeration
NPPES CertifiedJanuary 15, 2024
✔ NPI 1336182294 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal Medicine · Cardiovascular DiseaseAllopathic & Osteopathic Physicians
Taxonomy Code207RC0000X
License✔ Licensed in TX · F5863
Definition
An internist who specializes in diseases of the heart and blood vessels and manages complex cardiac conditions such as heart attacks and life-threatening, abnormal heartbeat rhythms.
3502 LIBERTY RD, Houston, TX 77026
Open in Google Maps ↗

Other Identifiers 1

Medicaid135733703TX

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Antidote Health of TX, Blue Cross and Blue Shield of Texas, Harbor Health 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. Chi Si Choi M.d. 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 ID9537127121
PECOS Enrollment IDI20110121000510
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

4

Medicare enrollment records show Chi Si Choi reassigns Medicare billing to 4 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Chi Si Choi, M.D.,p.A.
Same address
Cardiovascular Disease
3502 LIBERTY RD
Houston, TX 77026
  • Reassigned Medicare billing, Texas enrollment
NPI 1487961538 (713) 993-6000
Grace Clinic
Same address
Family
3502 LIBERTY RD
Houston, TX 77026
  • Reassigned Medicare billing, Texas enrollment
  • 2 clinicians in this Medicare group
NPI 1629850151 (713) 993-6000
Mrg Health Inc.
4.7 mi
Clinical Informatics
MRG HEALTH INC., 5201 MEMORIAL DRIVE STE 529
Houston, TX 77007
  • Reassigned Medicare billing, Texas enrollment
  • 12 clinicians in this Medicare group
NPI 1881342947 (855) 674-5333
Bird Dog Pharma, LLC
23 mi
Internal Medicine
12242 QUEENSTON BLVD STE E
Houston, TX 77095
  • Reassigned Medicare billing, Texas enrollment
  • 16 clinicians in this Medicare group
NPI 1124488085 (713) 252-3579

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

Hospital Affiliations CMS Care Compare

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

Memorial Hermann Hospital System

Acute Care Hospitals · Houston, TX
3/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number450184
Location1635 North Loop WestHouston, TX 77008 · Harris County
Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 77026 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
$72.62 typical visit price
range $18.60 – $143.93
Typical copayment $18.15 (range $4.65 – $35.98)
Most-billed visit code 99213
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

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

Nebulizer, with compressor E0570
DME-Other DME · category DE000N
1 supplier17 claims21 services$2.76 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.

SHEILA YOUNG FNP-BC
Nurse Practitioner (Family)
3502 LIBERTY RD
HOUSTON, TX 77026
Harris County (713) 993-6000
DR. EULA FAYE PERRY MD
Pediatrics
3502 LIBERTY RD
HOUSTON, TX 77026
Harris County (713) 223-9934
DR. LEVI VINCENT PERRY SR. MD
Internal Medicine (Cardiovascular Disease)
3502 LIBERTY RD
HOUSTON, TX 77026
Harris County (713) 223-9934
GRACE CLINIC
Clinic/Center (Primary Care)
3502 LIBERTY RD
HOUSTON, TX 77026
Harris County (713) 417-0479
CHI SI CHOI, M.D.,P.A.
Internal Medicine (Cardiovascular Disease)
3502 LIBERTY RD
HOUSTON, TX 77026
Harris County (713) 993-6000
GRACE CLINIC
Nurse Practitioner (Family)
3502 LIBERTY RD
HOUSTON, TX 77026
Harris County (713) 993-6000

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 Chi Si Choi's NPI number?

The NPI number for Chi Si Choi is 1336182294. It was assigned to this individual provider in the NPPES registry on June 14, 2006.

Where is Chi Si Choi located?

Chi Si Choi practices at 3502 Liberty Rd, Houston, TX 77026. The listed phone number is (713) 993-6000.

What is Chi Si Choi's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Cardiovascular Disease, with taxonomy code 207RC0000X.

Is Chi Si Choi enrolled in Medicare?

Yes. Chi Si Choi 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 organizations bill Medicare for Chi Si Choi's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Chi Si Choi reassigns Medicare benefits to 4 organizations: Chi Si Choi, M.D.,p.A. (Houston, TX), Grace Clinic (Houston, TX), Mrg Health Inc. (Houston, TX) and Bird Dog Pharma, LLC (Houston, TX). Each 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 Chi Si Choi's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Chi Si Choi accept?

Health plans from Antidote Health of TX, Blue Cross and Blue Shield of Texas, Harbor Health and UnitedHealthcare list Chi Si Choi 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 Chi Si Choi affiliated with any hospitals?

According to CMS data, Chi Si Choi is affiliated with Memorial Hermann Hospital System.

When was this NPI record last updated?

The NPPES record for Chi Si Choi was last updated on January 15, 2024. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 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.