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

DR. SUSAN J LIU MD
NPI 1033169594
Specialist in Ellicott City, MD

Q: What is Susan Liu's NPI number?

The NPI number for Susan Liu is 1033169594. It was assigned to this individual provider in the NPPES registry on May 12, 2006.

Q: What is Susan Liu's specialty?

The primary specialty registered for this NPI is Specialist with taxonomy code 174400000X.

Q: Is Susan Liu enrolled in Medicare?

No. Susan Liu has opted out of Medicare through May 18, 2027. Care is provided under private contracts, and Medicare does not pay for services furnished by providers who have opted out. The provider remains eligible to order and refer services for Medicare patients.

Q: When was this NPI record last updated?

The NPPES record for Susan Liu was last updated on July 13, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 41 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.

Active since May 12, 2006Opted out of Medicare · through May 18, 2027

3570 SAINT JOHNS LN, ELLICOTT CITY, MD 21042(410) 461-9500(410) 461-8945 Get Directions Write a Review

NPPES record last updated: July 13, 2026. Verified against the NPPES registry weekly; last sync: August 16, 2026.

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About Dr. Susan J Liu Md NPPES

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

DR. SUSAN J LIU MD (NPI 1033169594) is an individual specialist in Ellicott City, Maryland, licensed in Maryland (D0063453) and active in the NPI registry since May 2006. She has opted out of Medicare through May 18, 2027 and remains eligible to order and refer.

NPPES Registry Identity

NPI1033169594

Entity TypeIndividualFemale

Primary Taxonomy174400000X

Provider Legal NameDR. SUSAN J LIUCredential: MD

Location Address3570 SAINT JOHNS LNEllicott City, MD 21042-4020

Mailing Address3570 Saint Johns LnEllicott City, MD 21042-4020 · (410) 461-9500 · Fax (410) 461-8945

Phone(410) 461-9500

Fax(410) 461-8945

Sole ProprietorNo

Enumeration DateMay 12, 2006

Last NPPES UpdateJuly 13, 2026

✔ NPI 1033169594 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtySpecialistOther Service Providers

Taxonomy Code174400000X

License✔ Licensed in MD · D0063453

Definition

An individual educated and trained in an applied knowledge discipline used in the performance of work at a level requiring knowledge and skills beyond or apart from that provided by a general education or liberal arts degree.

3570 SAINT JOHNS LN, Ellicott City, MD 21042

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Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

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Opted out of Medicare

Dr. Susan J Liu Md has filed a Medicare opt-out affidavit. Services are provided under private contract between the provider and the patient, and are not billed to or reimbursed by Medicare. The opt-out is on file from May 18, 2015 through May 18, 2027.

Opt-Out Effective DateMay 18, 2015

Opt-Out In Effect ThroughMay 18, 2027Opt-out affidavits renew automatically every two years unless cancelled

Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesAn opted-out provider can still order and refer for Medicare patients in the categories marked above, even though their own services are not covered.

Other Providers at the Same Location NPPES 19

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

DR. KEVIN E MCGOVERN MD

Specialist