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MS. IL-RAN HWANG M.D
NPI 1346528593
Internal Medicine in Chicago, IL

Active since July 21, 2011PECOS EnrolledAccepts Medicare Assignment
1500 S CALIFORNIA AVENUE, CHICAGO, IL 60608(773) 542-2000(773) 257-6027 Get Directions Write a Review

NPPES record last updated: August 2, 2011. Verified against the NPPES registry weekly; last sync: October 18, 2026.

About Ms. Il-ran Hwang M.d NPPES

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

MS. IL-RAN HWANG M.D (NPI 1346528593) is an individual internal medicine provider in Chicago, Illinois, licensed in Illinois (125060559) and active in the NPI registry since July 2011. She is enrolled in Medicare PECOS, is affiliated with Houston Methodist Baytown Hospital, and is a graduate of Other (1989).

NPPES Registry Identity

NPI1346528593
Entity TypeIndividualFemale
Primary Taxonomy207R00000X
Provider Legal NameMS. IL-RAN HWANGCredential: M.D
Location Address1500 S CALIFORNIA AVENUEChicago, IL 60608-1797
Mailing Address1500 S California AveChicago, IL 60608-1797 · (773) 542-2000 · Fax (773) 257-6027
Phone(773) 542-2000
Fax(773) 257-6027
Sole ProprietorYes
Medical School CMSOtherGraduated 1989
Enumeration DateJuly 21, 2011
Last NPPES UpdateAugust 2, 2011
✔ NPI 1346528593 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207R00000X
License✔ Licensed in IL · 125060559
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.
1500 S CALIFORNIA AVENUE, Chicago, IL 60608
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Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Blue Cross and Blue Shield of Texas, CHRISTUS Health Plan, Molina Healthcare 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

Ms. Il-ran Hwang 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 ID7911223912
PECOS Enrollment IDI20180420001091
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

6

Medicare enrollment records show Il-ran Hwang reassigns Medicare billing to 6 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Ies Hospitalists PLLC
794 mi
Hospitalist
4835 LBJ FWY STE 900
Dallas, TX 75244
  • Reassigned Medicare billing, Texas enrollment
  • 50 clinicians in this Medicare group
NPI 1194483933 (469) 420-5527
Lonestar Hospital Medicine Associates, PA
823 mi
Hospitalist
2700 E BROAD ST
Mansfield, TX 76063
  • Reassigned Medicare billing, Texas enrollment
  • 994 clinicians in this Medicare group
NPI 1518237429 (682) 622-2000
Jefferson Physician Services, PLLC
888 mi
Internal Medicine
2830 CALDER ST
Beaumont, TX 77702
  • Reassigned Medicare billing, Texas enrollment
  • 103 clinicians in this Medicare group
NPI 1598546764 (409) 892-7171
Hospitalist Medicine Physicians Of Texas, PLLC
921 mi
Internal Medicine
18951 N MEMORIAL DR
Humble, TX 77338
  • Reassigned Medicare billing, Texas enrollment
  • 2,009 clinicians in this Medicare group
NPI 1629307095 (281) 540-7700
Round Table Specialist Group, PLLC
947 mi
Emergency Medicine
8910 HIGHWAY 6 S
Houston, TX 77083
  • Reassigned Medicare billing, Texas enrollment
  • 43 clinicians in this Medicare group
NPI 1497152268 (832) 429-8027
Vanguard Inpatient Physicians, PLLC
956 mi
Internal Medicine
4645 SWEETWATER BLVD STE 200
Sugar Land, TX 77479
  • Reassigned Medicare billing, Texas enrollment
  • 53 clinicians in this Medicare group
NPI 1801339742 (281) 666-8065

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 4

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 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.
61 services34 patients
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.
20 services14 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.
16 services16 patients
Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes 99222
Initial hospital inpatient care is a service where a healthcare provider spends about 50 minutes per day overseeing your care while you're admitted in the hospital. This includes reviewing your health status, planning your treatment, and ensuring your safety and comfort.
13 services13 patients

Hospital Affiliations CMS Care Compare

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

Houston Methodist Baytown Hospital

Acute Care Hospitals · Baytown, TX
5/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number450424
Location4401 Garth RoadBaytown, TX 77521 · Harris County
Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 60608 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
$138.86 typical visit price
range $60.08 – $183.39
Typical copayment $34.71 (range $15.02 – $45.84)
Most-billed visit code 99204
Established Patient
$105.70 typical visit price
range $18.97 – $148.12
Typical copayment $26.42 (range $4.74 – $37.03)
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.

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 Il-ran Hwang's NPI number?

The NPI number for Il-ran Hwang is 1346528593. It was assigned to this individual provider in the NPPES registry on July 21, 2011.

Where is Il-ran Hwang located?

Il-ran Hwang practices at 1500 S California Avenue, Chicago, IL 60608. The listed phone number is (773) 542-2000.

What is Il-ran Hwang's specialty?

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

Is Il-ran Hwang enrolled in Medicare?

Yes. Il-ran Hwang 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 Il-ran Hwang's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Il-ran Hwang reassigns Medicare benefits to 6 organizations: Ies Hospitalists PLLC (Dallas, TX), Lonestar Hospital Medicine Associates, PA (Mansfield, TX), Jefferson Physician Services, PLLC (Beaumont, TX), Hospitalist Medicine Physicians Of Texas, PLLC (Humble, TX), Round Table Specialist Group, PLLC (Houston, TX) and 1 more organization, listed in the Medicare section above. 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 Il-ran Hwang's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Il-ran Hwang accept?

Health plans from Blue Cross and Blue Shield of Texas, CHRISTUS Health Plan, Molina Healthcare and Oscar Insurance Company list Il-ran Hwang 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 Il-ran Hwang affiliated with any hospitals?

According to CMS data, Il-ran Hwang is affiliated with Houston Methodist Baytown Hospital.

When was this NPI record last updated?

The NPPES record for Il-ran Hwang was last updated on August 2, 2011. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 15 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.