DR. HAO ZHANG M.D. PHD
NPI 1346637485
Internal Medicine - Gastroenterology in Huntley, IL

Active since April 15, 2015PECOS EnrolledAccepts Medicare Assignment
10350 HALIGUS RD, SUITE 210, HUNTLEY, IL 60142(847) 535-6284(847) 759-6284 Get Directions Write a Review

NPPES record last updated: April 21, 2026. Verified against the NPPES registry weekly; last sync: August 02, 2026.

Record update history: Apr 21, 2026, Jan 20, 2023, Sep 11, 2018 (3 updates tracked since 2018).

About Dr. Hao Zhang M.d. Phd NPPES

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

DR. HAO ZHANG M.D. PHD (NPI 1346637485) is an individual gastroenterology provider in Huntley, Illinois, licensed in Illinois (036156365) and active in the NPI registry since April 2015. He is enrolled in Medicare PECOS, is affiliated with Loyola Gottlieb Memorial Hospital, and is a graduate of Other (2009).

NPPES Registry Identity

NPI1346637485
Entity TypeIndividualMale
Primary Taxonomy207RG0100X
Provider Legal NameDR. HAO ZHANGCredential: M.D. PHD
Location Address10350 HALIGUS RD, SUITE 210Huntley, IL 60142
Mailing Address611 W Park StUrbana, IL 61801-2529
Fax(847) 759-6284
Sole ProprietorNo
Medical School CMSOtherGraduated 2009
Enumeration DateApril 15, 2015
Last NPPES UpdateApril 21, 20263 updates tracked since enumeration
NPPES CertifiedApril 21, 2026
NPI 1346637485 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

Primary SpecialtyInternal Medicine · GastroenterologyAllopathic & Osteopathic Physicians
Taxonomy Code207RG0100X
Licenses Licensed in IL · 036156365 Licensed in OH · 35.134766
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.
10350 HALIGUS RD, Huntley, IL 60142

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

Enrolled in Medicare and accepts Medicare assignment

Dr. Hao Zhang M.d. Phd 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 ID42614653
PECOS Enrollment IDI20210804001574
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.

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.

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.
108 services107 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.
93 services92 patients
Moderate sedation services provided by the same physician or other qualified health care professional performing a gastrointestinal endoscopic service that sedation supports, requiring the presence of an independent trained observer to assist in the monito G0500
Moderate sedation is a method where a physician uses medication to help you relax during a gastrointestinal endoscopy. An independent trained observer will be present to monitor your vital signs and ensure your safety throughout the procedure. It's a common and safe practice.
86 services83 patients
Biopsy of large bowel using a flexible endoscope 45380
A biopsy of the large bowel using a flexible endoscope is a procedure where a thin, flexible tube with a camera is inserted through the rectum to examine the bowel. If abnormal tissue is found, a small sample is taken for further examination. This helps in diagnosing conditions like inflammation, polyps, or cancer.
71 services71 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.
63 services62 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.
49 services44 patients

Hospital Affiliations CMS Care Compare 5

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

Loyola Gottlieb Memorial Hospital

Acute Care Hospitals · Melrose Park, IL
3/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number140008
Location701 West North AveMelrose Park, IL 60160 · Cook County
Emergency services

Northwestern Medicine Mchenry

Acute Care Hospitals · Mchenry, IL
5/5 CMS rating
OwnershipVoluntary non-profit - Other
CMS Certification Number140116
Location4201 Medical Center DriveMchenry, IL 60050 · Mc Henry County
Emergency services Birthing friendly

Northwestern Medicine Central Dupage Hospital

Acute Care Hospitals · Winfield, IL
5/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number140242
Location25 North Winfield RoadWinfield, IL 60190 · Du Page County
Emergency services Birthing friendly

Loyola University Medical Center

Acute Care Hospitals · Maywood, IL
3/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number140276
Location2160 S 1st AvenueMaywood, IL 60153 · Cook County
Emergency services Birthing friendly

Northwestern Memorial Hospital

Acute Care Hospitals · Chicago, IL
5/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number140281
Location251 E Huron StChicago, IL 60611 · Cook County
Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 60142 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
$127.46 typical visit price
range $54.80 – $168.44
Typical copayment $31.86 (range $13.70 – $42.11)
Most-billed visit code 99204
Established Patient
$97.25 typical visit price
range $17.16 – $136.56
Typical copayment $24.31 (range $4.29 – $34.14)
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 14

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

Nurse Practitioner (Family)
10350 HALIGUS RD
HUNTLEY, IL 60142
Family Medicine
10350 HALIGUS RD
HUNTLEY, IL 60142
Nurse Practitioner (Family)
10350 HALIGUS RD
HUNTLEY, IL 60142
Anesthesiology
10350 HALIGUS RD
HUNTLEY, IL 60142
Family Medicine
10350 HALIGUS RD
HUNTLEY, IL 60142
Nurse Practitioner
10350 HALIGUS RD
HUNTLEY, IL 60142
Nurse Anesthetist, Certified Registered
10350 HALIGUS RD
HUNTLEY, IL 60142
Internal Medicine (Hematology & Oncology)
10350 HALIGUS RD, STE 210
HUNTLEY, IL 60142

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 Hao Zhang's NPI number?

The NPI number for Hao Zhang is 1346637485. It was assigned to this individual provider in the NPPES registry on April 15, 2015.

Where is Hao Zhang located?

Hao Zhang practices at 10350 Haligus Rd Suite 210, Huntley, IL 60142. The listed phone number is (847) 535-6284.

What is Hao Zhang's specialty?

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

Is Hao Zhang enrolled in Medicare?

Yes. Hao Zhang 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.

Is Hao Zhang affiliated with any hospitals?

According to CMS data, Hao Zhang is affiliated with Loyola Gottlieb Memorial Hospital, Northwestern Medicine Mchenry, Northwestern Medicine Central Dupage Hospital, Loyola University Medical Center and Northwestern Memorial Hospital.

When was this NPI record last updated?

The NPPES record for Hao Zhang was last updated on April 21, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 months 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.