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DR. HAJOON CHUN M.D.
NPI 1174612592
Obstetrics & Gynecology - Maternal & Fetal Medicine in Flushing, NY

Active since October 12, 2006PECOS Enrolled
89.52/100
CMS Quality Rating
18901 NORTHERN BLVD, FLUSHING, NY 11358(718) 253-8111(718) 587-9300 Get Directions Write a Review

NPPES record last updated: June 10, 2024. Verified against the NPPES registry weekly; last sync: November 01, 2026.

Record update history: Jun 10, 2024, Jun 6, 2024 (2 updates tracked since 2024).

About Dr. Hajoon Chun M.d. NPPES

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

DR. HAJOON CHUN M.D. (NPI 1174612592) is an individual maternal & fetal medicine provider in Flushing, New York, licensed in New York (198540) and active in the NPI registry since October 2006. He is enrolled in Medicare PECOS and is a graduate of Tufts University School Of Medicine (1991).

NPPES Registry Identity

NPI1174612592
Entity TypeIndividualMale
Primary Taxonomy207VM0101X
Provider Legal NameDR. HAJOON CHUNCredential: M.D.
Location Address18901 NORTHERN BLVDFlushing, NY 11358-2824
Mailing Address18901 Northern BlvdFlushing, NY 11358-2824 · (718) 253-8111 · Fax (718) 587-9300
Phone(718) 253-8111
Fax(718) 587-9300
Sole ProprietorYes
Medical School CMSTufts University School Of MedicineGraduated 1991
Enumeration DateOctober 12, 2006
Last NPPES UpdateJune 10, 20242 updates tracked since enumeration
NPPES CertifiedJune 10, 2024
✔ NPI 1174612592 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyObstetrics & Gynecology · Maternal & Fetal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207VM0101X
License✔ Licensed in NY · 198540
Definition
An obstetrician/gynecologist who cares for, or provides consultation on, patients with complications of pregnancy. This specialist has advanced knowledge of the obstetrical, medical and surgical complications of pregnancy and their effect on both the mother and the fetus. The specialist also possesses expertise in the most current diagnostic and treatment modalities used in the care of patients with complicated pregnancies.
18901 NORTHERN BLVD, Flushing, NY 11358
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Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Dr. Hajoon Chun M.d. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

PECOS PAC ID8820148745
PECOS Enrollment IDI20090615000236
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

11

Medicare enrollment records show Hajoon Chun reassigns Medicare billing to 11 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Hjc Medicine PLLC
Same address
Maternal & Fetal Medicine
18901 NORTHERN BLVD
Flushing, NY 11358
  • Reassigned Medicare billing, New York enrollment
NPI 1083126155 (718) 261-9300
Flushing Hospital & Medical Center
1.3 mi
General Acute Care Hospital
4500 PARSONS BLVD
Flushing, NY 11355
  • Reassigned Medicare billing, New York enrollment
  • 327 clinicians in this Medicare group
NPI 1548217763 (718) 670-6000
Choices Women's Medical Center, Inc.
4.0 mi
Ambulatory Surgical
14732 JAMAICA AVE
Jamaica, NY 11435
  • Reassigned Medicare billing, New York enrollment
  • 29 clinicians in this Medicare group
NPI 1194832949 (718) 786-5000
Comprehensive Medical Care, PC
4.0 mi
Specialist
14732 JAMAICA AVE
Jamaica, NY 11435
  • Reassigned Medicare billing, New York enrollment
  • 22 clinicians in this Medicare group
NPI 1609897834 (718) 786-5000
Onsite Medical Suite PC
4.0 mi
Specialist
9811 QUEENS BLVD, SUITE LL3
Rego Park, NY 11374
  • Reassigned Medicare billing, New York enrollment
  • 4 clinicians in this Medicare group
NPI 1497131403 (718) 606-2800
Tjh Medical Services, P.C.
4.2 mi
Internal Medicine
8906 135TH ST
Jamaica, NY 11418
  • Reassigned Medicare billing, New York enrollment
  • Medicare enrollment name: Tjh Medical Services PC
  • 497 clinicians in this Medicare group
NPI 1184670465 (718) 206-6742
Medical Care For Women, PC
7.1 mi
Specialist
2322 30TH RD, SUITE #1H
Astoria, NY 11102
  • Reassigned Medicare billing, New York enrollment
  • 4 clinicians in this Medicare group
NPI 1942475793 (718) 278-0888
Nsuh Plainview Physicians Ufp Corporation
8.9 mi
Obstetrics & Gynecology
260 E 67TH ST STE B
New York, NY 10065
  • Reassigned Medicare billing, New York enrollment
  • 43 clinicians in this Medicare group
NPI 1508750332 (212) 629-2000
Bethpage Medical, PLLC
9.3 mi
Obstetrics & Gynecology
200 GARDEN CITY PLZ
Garden City, NY 11530
  • Reassigned Medicare billing, New York enrollment
  • 35 clinicians in this Medicare group
NPI 1205074739 (516) 663-6400
Invision Maternal Fetal Medicine PC
25 mi
Maternal & Fetal Medicine
1323 STUYVESANT AVE
Union, NJ 07083
  • Reassigned Medicare billing, New York enrollment
  • 4 clinicians in this Medicare group
NPI 1467290064 (888) 501-0937

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 2

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.

Ultrasound scan of uterus, ovaries, tubes, cervix and pelvic area through vagina 76830
An ultrasound scan of the lower abdominal region is a safe, non-invasive procedure that uses sound waves to create images of internal structures. This helps in checking the health of reproductive organs and detecting any abnormalities. The scan is done via a small probe inserted into the body.
34 services31 patients
Complete ultrasound scan of pelvis 76856
A complete ultrasound scan of the pelvis is a safe, non-invasive imaging procedure. It uses sound waves to create pictures of your lower abdomen area, helping doctors to evaluate and diagnose any potential issues. It's painless and usually takes about 30 minutes.
33 services30 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 11358 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
$153.13 typical visit price
range $67.00 – $201.98
Typical copayment $38.28 (range $16.75 – $50.49)
Most-billed visit code 99204
Established Patient
$82.96 typical visit price
range $21.62 – $163.52
Typical copayment $20.74 (range $5.40 – $40.88)
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.

Medicare Quality Performance CMS QPP · MIPS

Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.

89.52/100
MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program
Scored as part of a group practice
Quality75.34
Promoting Interoperability79
Improvement Activities40
Cost73.91

Other Providers at the Same Location NPPES 3

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

HJC MEDICINE PLLC
Obstetrics & Gynecology (Maternal & Fetal Medicine)
18901 NORTHERN BLVD
FLUSHING, NY 11358
Queens County (718) 261-9300
SABINE EDJENGUELE
Nurse Practitioner (Women's Health)
18901 NORTHERN BLVD
FLUSHING, NY 11358
Queens County (917) 410-6905
AMR ETMAN MD
Obstetrics & Gynecology (Gynecology)
18901 NORTHERN BLVD
FLUSHING, NY 11358
Queens County (917) 410-6905

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 Hajoon Chun's NPI number?

The NPI number for Hajoon Chun is 1174612592. It was assigned to this individual provider in the NPPES registry on October 12, 2006.

Where is Hajoon Chun located?

Hajoon Chun practices at 18901 Northern Blvd, Flushing, NY 11358. The listed phone number is (718) 253-8111.

What is Hajoon Chun's specialty?

The primary specialty registered for this NPI is Obstetrics & Gynecology, specializing in Maternal & Fetal Medicine, with taxonomy code 207VM0101X.

Is Hajoon Chun enrolled in Medicare?

Yes. Hajoon Chun is registered in the Medicare PECOS enrollment system.

Which organizations bill Medicare for Hajoon Chun's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Hajoon Chun reassigns Medicare benefits to 11 organizations: Hjc Medicine PLLC (Flushing, NY), Flushing Hospital & Medical Center (Flushing, NY), Choices Women's Medical Center, Inc. (Jamaica, NY), Comprehensive Medical Care, PC (Jamaica, NY), Onsite Medical Suite PC (Rego Park, NY) and 6 more organizations, 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 Hajoon Chun's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

When was this NPI record last updated?

The NPPES record for Hajoon Chun was last updated on June 10, 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.