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Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

MRS. SHILIAN DUAN PA-C
NPI 1992583827
Physician Assistant in Rockville, MD

Active since September 20, 2023PECOS Enrolled
9901 MEDICAL CENTER DR, ROCKVILLE, MD 20850(240) 826-6000 Get Directions Write a Review

NPPES record last updated: July 15, 2026. Verified against the NPPES registry weekly; last sync: August 09, 2026.

About Mrs. Shilian Duan Pa-c NPPES

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

MRS. SHILIAN DUAN PA-C (NPI 1992583827) is an individual physician assistant in Rockville, Maryland and active in the NPI registry since September 2023. She is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1992583827
Entity TypeIndividualFemale
Primary Taxonomy363A00000X
Provider Legal NameMRS. SHILIAN DUANCredential: PA-C
Location Address9901 MEDICAL CENTER DRRockville, MD 20850-3357
Mailing Address9901 Medical Center DrRockville, MD 20850-3357
Phone(240) 826-6000
Sole ProprietorNo
Enumeration DateSeptember 20, 2023
Last NPPES UpdateJuly 15, 2026
NPPES CertifiedJuly 15, 2026
✔ NPI 1992583827 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyPhysician AssistantPhysician Assistants & Advanced Practice Nursing Providers
Taxonomy Code363A00000X
Definition
A physician assistant is a person who has successfully completed an accredited education program for physician assistant, is licensed by the state and is practicing within the scope of that license. Physician assistants are formally trained to perform many of the routine, time-consuming tasks a physician can do. In some states, they may prescribe medications. They take medical histories, perform physical exams, order lab tests and x-rays, and give inoculations. Most states require that they work under the supervision of a physician.
Also ListedPhysician Assistant · MedicalTaxonomy 363AM0700X
9901 MEDICAL CENTER DR, Rockville, MD 20850
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Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Mrs. Shilian Duan Pa-c 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.

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.

Emergency department visit with high level of medical decision making 99285
An emergency department visit for severe conditions is when you urgently seek medical help due to serious health issues. These could be severe injuries, breathing problems, unbearable pain, or sudden severe illness. Doctors and nurses will provide immediate care to stabilize your condition.
80 services79 patients
Emergency department visit with moderate level of medical decision making 99284
An emergency department visit for a high-severity issue means you're experiencing a serious health problem that needs immediate attention. This could be a severe injury, serious illness, or life-threatening condition. Medical professionals will provide urgent care to stabilize your condition.
76 services76 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 20850 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
$100.31 typical visit price
range $65.18 – $194.86
Typical copayment $25.07 (range $16.29 – $48.71)
Most-billed visit code 99203
Established Patient
$80.66 typical visit price
range $21.40 – $158.88
Typical copayment $20.16 (range $5.35 – $39.72)
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.

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.

LOGAN HEWITT LMSW LGSM
Social Worker
9901 MEDICAL CENTER DR
ROCKVILLE, MD 20850
Montgomery County (240) 826-6000
DR. SHERRY CHANG PHARM.D.
Pharmacist (Pharmacotherapy)
9901 MEDICAL CENTER DR
ROCKVILLE, MD 20850
Montgomery County (301) 294-0612
RAKESH MAKADIA M.D
Internal Medicine
9901 MEDICAL CENTER DR
ROCKVILLE, MD 20850
Montgomery County (240) 826-6000
MESFIN WOLDESENBET M.D.
Pediatrics (Neonatal-Perinatal Medicine)
9901 MEDICAL CENTER DR
ROCKVILLE, MD 20850
Montgomery County (240) 826-7392
FABIAN PADRON PA-C
Physician Assistant (Surgical)
9901 MEDICAL CENTER DR
ROCKVILLE, MD 20850
Montgomery County (240) 826-6000
SANDRA ST JEAN
Counselor (Professional)
9901 MEDICAL CENTER DR
ROCKVILLE, MD 20850
Montgomery County (240) 826-6000
DR. ANUJA RASTOGI M.D.
Pediatrics
9901 MEDICAL CENTER DR, PEDIATRIC FLOOR
ROCKVILLE, MD 20850
Montgomery County (240) 826-6480
NICOLE MARIE EDWARDS PA-C
Physician Assistant (Medical)
9901 MEDICAL CENTER DR
ROCKVILLE, MD 20850
Montgomery County (586) 703-4476

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 Shilian Duan's NPI number?

The NPI number for Shilian Duan is 1992583827. It was assigned to this individual provider in the NPPES registry on September 20, 2023.

Where is Shilian Duan located?

Shilian Duan practices at 9901 Medical Center Dr, Rockville, MD 20850. The listed phone number is (240) 826-6000.

What is Shilian Duan's specialty?

The primary specialty registered for this NPI is Physician Assistant with taxonomy code 363A00000X.

Is Shilian Duan enrolled in Medicare?

Yes. Shilian Duan is registered in the Medicare PECOS enrollment system.

When was this NPI record last updated?

The NPPES record for Shilian Duan was last updated on July 15, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 27 days 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.