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KIN-SING AU MD
NPI 1730172362
Radiology - Radiation Oncology in Leesburg, VA

Active since August 30, 2005PECOS EnrolledAccepts Medicare Assignment
44035 RIVERSIDE PKWY, SUITE 100, LEESBURG, VA 20176(703) 858-8850(703) 858-8870 Get Directions Write a Review

NPPES record last updated: December 23, 2024. Verified against the NPPES registry weekly; last sync: October 18, 2026.

About Kin-sing Au Md NPPES

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

KIN-SING AU MD (NPI 1730172362) is an individual radiation oncology provider in Leesburg, Virginia, licensed in Guam (M-1793) and active in the NPI registry since August 2005. He is enrolled in Medicare PECOS, is affiliated with Guam Memorial Hospital Authority, and is a graduate of Johns Hopkins University School Of Medicine (1981).

NPPES Registry Identity

NPI1730172362
Entity TypeIndividualMale
Primary Taxonomy2085R0001X
Provider Legal NameKIN-SING AUCredential: MD
Location Address44035 RIVERSIDE PKWY, SUITE 100Leesburg, VA 20176-8260
Mailing Address133 Route 3Dededo, GU 96929-6911 · (671) 645-5500
Phone(703) 858-8850
Fax(703) 858-8870
Sole ProprietorNo
Medical School CMSJohns Hopkins University School Of MedicineGraduated 1981
Enumeration DateAugust 30, 2005
Last NPPES UpdateDecember 23, 2024
NPPES CertifiedDecember 23, 2024
✔ NPI 1730172362 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyRadiology · Radiation OncologyAllopathic & Osteopathic Physicians
Taxonomy Code2085R0001X
Licenses✔ Licensed in GU · M-1793✔ Licensed in VA · 0101046565
Definition
A radiologist who deals with the therapeutic applications of radiant energy and its modifiers and the study and management of disease, especially malignant tumors.
44035 RIVERSIDE PKWY, Leesburg, VA 20176
Open in Google Maps ↗

Other Identifiers 2

OtherP00112813Rr Medicare
Medicaid010046769VA

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

Kin-sing Au Md 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 ID1557355914
PECOS Enrollment IDI20131101001554
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 Kin-sing Au reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Guam Healthcare Development Incorporated
Clinic/Center
133 ROUTE 3
Dededo, GU 96929
  • Reassigned Medicare billing, Guam enrollment
  • 432 clinicians in this Medicare group
NPI 1326447939 (671) 645-5500

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.

Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more 99213
This is a routine visit for patients who have already been seen by the healthcare provider. During this approximately 20-29 minute appointment, your health status will be evaluated and any necessary treatments or tests will be discussed. It's a chance to address any health concerns you may have.
26 services16 patients
New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more 99203
This service involves an initial office or outpatient visit for a new patient. The healthcare professional will spend 30-44 minutes understanding your health history, current issues, and discussing possible treatment plans. It's a comprehensive evaluation to start your healthcare journey.
23 services23 patients
New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more 99204
This is a first-time office or outpatient visit lasting between 45-59 minutes. The healthcare provider evaluates your health, discusses your medical history, and may suggest further tests or treatments. It's an opportunity to ask questions and understand your health better.
22 services22 patients
Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more 99212
This is a routine check-up for patients who have previously seen the doctor. During this 10-19 minute visit, the doctor will review your health status, discuss any concerns, and manage ongoing treatments or medications. It's a chance to ensure your health is on track.
13 services11 patients

Hospital Affiliations CMS Care Compare 2

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

Guam Memorial Hospital Authority

Acute Care Hospitals · Tamuning, GU
2/5 CMS rating
OwnershipGovernment - Local
CMS Certification Number650001
Location85O Gov Carlos G Camacho RoadTamuning, GU 96913 · Guam County
Emergency services

Guam Regional Medical City

Acute Care Hospitals · Dededo, GU
OwnershipVoluntary non-profit - Private
CMS Certification Number650003
Location133 Route 3Dededo, GU 96929 · Guam County
Emergency services

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 20176 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
$170.30 typical visit price
range $56.19 – $170.30
Typical copayment $42.57 (range $14.04 – $42.57)
Most-billed visit code 99205
Established Patient
$70.08 typical visit price
range $18.07 – $138.91
Typical copayment $17.52 (range $4.51 – $34.72)
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.

Reported Quality Measures

Breast Cancer Screening
Percentage of women 50-74 years of age who had a mammogram to screen for breast cancer
18%67 patients1/55-star benchmark: 92%
Cervical Cancer Screening
Percentage of women 21-64 years of age who were screened for cervical cancer using either of the following criteria: - Women age 21-64 who had cervical cytology performed every 3 years - Women age 30-64 who had cervical cytology/human papillomavirus (HPV)…
21%63 patients
Documentation of Current Medications in the Medical Record
Percentage of visits for patients aged 18 years and older for which the eligible professional or eligible clinician attests to documenting a list of current medications using all immediate resources available on the date of the encounter.
88%381 patients3/55-star benchmark: 100%
Oncology: Medical and Radiation - Pain Intensity Quantified
Percentage of patient visits, regardless of patient age, with a diagnosis of cancer currently receiving chemotherapy or radiation therapy in which pain intensity is quantified
36%678 patients1/55-star benchmark: 100%
Preventive Care and Screening: Body Mass Index (BMI) Screening and Follow-Up Plan
Percentage of patients aged 18 years and older with a BMI documented during the current encounter or during the previous twelve months AND with a BMI outside of normal parameters, a follow-up plan is documented during the encounter or during the previous…
31%262 patients2/55-star benchmark: 97%
Providers report different measures because they deliver different services; reporting more or less information is not a reflection of quality. Star ratings appear only where CMS assigned them.

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.

ERIN SHANAHAN OT
Occupational Therapist
44035 RIVERSIDE PKWY, SUITE 500A
LEESBURG, VA 20176
Loudoun County (703) 858-6667
PHYSICIANS HEALTH SOLUTIONS
Podiatrist (Foot Surgery)
44035 RIVERSIDE PKWY, 345
LEESBURG, VA 20176
Loudoun County (703) 466-0455
JAY L LAUER OT
Occupational Therapist
44035 RIVERSIDE PKWY, SUITE 500A
LEESBURG, VA 20176
Loudoun County (703) 858-6667
INOVA LOUDOUN AMBULATORY SURGERY
Clinic/Center (Ambulatory Surgical)
44035 RIVERSIDE PKWY, SUITE 200
LEESBURG, VA 20176
Loudoun County (571) 209-6465
MARGIE COMERFORD SLP, CCC
Speech-Language Pathologist
44035 RIVERSIDE PKWY, SUIE 500A
LEESBURG, VA 20176
Loudoun County (703) 858-6667
INFECTIOUS DISEASE:TROPICAL MEDICINE AND TRAVELERS HEALTH
Internal Medicine (Infectious Disease)
44035 RIVERSIDE PKWY, SUITE 440
LEESBURG, VA 20176
Loudoun County (703) 858-9966
RAJAT GARG M.D.
Internal Medicine (Interventional Cardiology)
44035 RIVERSIDE PKWY, #400
LEESBURG, VA 20176
Loudoun County (703) 858-5421
LAURA A MUNTZER PA-C
Physician Assistant
44035 RIVERSIDE PKWY, #400
LEESBURG, VA 20176
Loudoun County (703) 858-5421

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 Kin-sing Au's NPI number?

The NPI number for Kin-sing Au is 1730172362. It was assigned to this individual provider in the NPPES registry on August 30, 2005.

Where is Kin-sing Au located?

Kin-sing Au practices at 44035 Riverside Pkwy Suite 100, Leesburg, VA 20176. The listed phone number is (703) 858-8850.

What is Kin-sing Au's specialty?

The primary specialty registered for this NPI is Radiology, specializing in Radiation Oncology, with taxonomy code 2085R0001X.

Is Kin-sing Au enrolled in Medicare?

Yes. Kin-sing Au 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 organization bills Medicare for Kin-sing Au's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Kin-sing Au reassigns Medicare benefits to Guam Healthcare Development Incorporated (Dededo, GU). 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 Kin-sing Au's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

Is Kin-sing Au affiliated with any hospitals?

According to CMS data, Kin-sing Au is affiliated with Guam Memorial Hospital Authority and Guam Regional Medical City.

When was this NPI record last updated?

The NPPES record for Kin-sing Au was last updated on December 23, 2024. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 22 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.