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DR. JOON SUNG YUN M.D.
NPI 1952387680
Internal Medicine - Pulmonary Disease in Portsmouth, VA

Active since December 15, 2005PECOS Enrolled
620 JOHN PAUL JONES CIR, PORTSMOUTH, VA 23708(757) 953-2075(757) 953-0832 Get Directions Write a Review

NPPES record last updated: September 15, 2017. Verified against the NPPES registry weekly; last sync: October 18, 2026.

About Dr. Joon Sung Yun M.d. NPPES

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

DR. JOON SUNG YUN M.D. (NPI 1952387680) is an individual pulmonary disease provider in Portsmouth, Virginia, licensed in Virginia (0101235221) and active in the NPI registry since December 2005. He is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1952387680
Entity TypeIndividualMale
Primary Taxonomy207RP1001X
Provider Legal NameDR. JOON SUNG YUNCredential: M.D.
Location Address620 JOHN PAUL JONES CIRPortsmouth, VA 23708-2111
Mailing Address4205 White Acres CtVirginia Beach, VA 23455-5648
Phone(757) 953-2075
Fax(757) 953-0832
Sole ProprietorNo
Enumeration DateDecember 15, 2005
Last NPPES UpdateSeptember 15, 2017
✔ NPI 1952387680 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyInternal Medicine · Pulmonary DiseaseAllopathic & Osteopathic Physicians
Taxonomy Code207RP1001X
License✔ Licensed in VA · 0101235221
Definition
An internist who treats diseases of the lungs and airways. The pulmonologist diagnoses and treats cancer, pneumonia, pleurisy, asthma, occupational and environmental diseases, bronchitis, sleep disorders, emphysema and other complex disorders of the lungs.
Also ListedInternal Medicine · Critical Care MedicineTaxonomy 207RC0200X · License 0101235221 (VA)
620 JOHN PAUL JONES CIR, Portsmouth, VA 23708
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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. Joon Sung Yun M.d. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

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 Joon Yun reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Sentara Medical Group
5.4 mi
Family Medicine
824 N MILITARY HWY STE 100
Norfolk, VA 23502
  • Reassigned Medicare billing, Virginia enrollment
  • 1,901 clinicians in this Medicare group
NPI 1265485270 (757) 252-2900

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 3

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.

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.
91 services57 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.
22 services22 patients
Initial hospital care with straightforward or low level of medical decision making, per day, if using time, at least 40 minutes 99221
Initial hospital inpatient care refers to the first day of your stay in the hospital. This service typically includes a 30-minute check-up with a healthcare professional. They'll assess your health, discuss your condition, and plan your treatment. It's part of ensuring you receive the best possible care.
14 services14 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 23708 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
$129.04 typical visit price
range $56.19 – $170.30
Typical copayment $32.26 (range $14.04 – $42.57)
Most-billed visit code 99204
Established Patient
$99.13 typical visit price
range $18.07 – $138.91
Typical copayment $24.78 (range $4.51 – $34.72)
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 20

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

MEREDITH TVERDOSI CRNA
Nurse Anesthetist, Certified Registered
620 JOHN PAUL JONES CIR
PORTSMOUTH, VA 23708
Portsmouth City (757) 953-3238
ERIC FRANCIS SULAVA
Emergency Medicine
620 JOHN PAUL JONES CIR, NAVAL MEDICAL CENTER PORTSMOUTH
PORTSMOUTH, VA 23708
Portsmouth City (757) 953-0669
MRS. TIFFNY KUPER RHH
Dental Hygienist
620 JOHN PAUL JONES CIR
PORTSMOUTH, VA 23708
Portsmouth City (757) 953-2711
DR. LAKEISHA GOODE PHARMD
Pharmacist
620 JOHN PAUL JONES CIR
PORTSMOUTH, VA 23708
Portsmouth City (757) 953-7462
JASMINE WOOD MD
Surgery
620 JOHN PAUL JONES CIR
PORTSMOUTH, VA 23708
Portsmouth City (757) 953-1895
NICHOLAS FANSELOW
General Practice
620 JOHN PAUL JONES CIR
PORTSMOUTH, VA 23708
Portsmouth City (757) 953-0669
DR. DAVID JESSEN MD
Military Health Care Provider
620 JOHN PAUL JONES CIR
PORTSMOUTH, VA 23708
Portsmouth City (757) 953-2518
DR. DANIEL VERNON UNGER M.D.
Orthopaedic Surgery
620 JOHN PAUL JONES CIR, NAVAL MEDICAL CENTER
PORTSMOUTH, VA 23708
Portsmouth City (757) 953-1888

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 Joon Yun's NPI number?

The NPI number for Joon Yun is 1952387680. It was assigned to this individual provider in the NPPES registry on December 15, 2005.

Where is Joon Yun located?

Joon Yun practices at 620 John Paul Jones Cir, Portsmouth, VA 23708. The listed phone number is (757) 953-2075.

What is Joon Yun's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Pulmonary Disease, with taxonomy code 207RP1001X.

Is Joon Yun enrolled in Medicare?

Yes. Joon Yun is registered in the Medicare PECOS enrollment system.

Which organization bills Medicare for Joon Yun's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Joon Yun reassigns Medicare benefits to Sentara Medical Group (Norfolk, VA). 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 Joon Yun'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 Joon Yun was last updated on September 15, 2017. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 9 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.