DR. OLIVIA LIAO MD
NPI 1174502454
Ophthalmology in Lexington, MA

Q: What is Olivia Liao's NPI number?

The NPI number for Olivia Liao is 1174502454. It was assigned to this individual provider in the NPPES registry on January 13, 2006.

Q: What is Olivia Liao's specialty?

The primary specialty registered for this NPI is Ophthalmology with taxonomy code 207W00000X.

Q: When was this NPI record last updated?

The NPPES record for Olivia Liao was last updated on June 23, 2008. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 18 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.

Active since January 13, 2006PECOS Enrolled

21 WORTHEN RD, LEXINGTON, MA 02421(781) 862-1620(781) 863-9416 Get Directions Write a Review

NPPES record last updated: June 23, 2008. Verified against the NPPES registry weekly; last sync: October 18, 2026.

On this page

About Dr. Olivia Liao Md NPPES

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

DR. OLIVIA LIAO MD (NPI 1174502454) is an individual ophthalmology provider in Lexington, Massachusetts, licensed in Massachusetts (75542) and active in the NPI registry since January 2006. She is enrolled in Medicare PECOS and is a graduate of Boston University School Of Medicine (1990).

NPPES Registry Identity

NPI1174502454

Entity TypeIndividualFemale

Primary Taxonomy207W00000X

Provider Legal NameDR. OLIVIA LIAOCredential: MD

Location Address21 WORTHEN RDLexington, MA 02421-4835

Mailing Address21 Worthen Rd, Attn: Amy KilpatrickLexington, MA 02421-4835 · (781) 862-1620 · Fax (781) 863-9416

Phone(781) 862-1620

Fax(781) 863-9416

Sole ProprietorNo

Medical School CMSBoston University School Of MedicineGraduated 1990

Enumeration DateJanuary 13, 2006

Last NPPES UpdateJune 23, 2008

✔ NPI 1174502454 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyOphthalmologyAllopathic & Osteopathic Physicians

Taxonomy Code207W00000X

License✔ Licensed in MA · 75542

Definition

An ophthalmologist has the knowledge and professional skills needed to provide comprehensive eye and vision care. Ophthalmologists are medically trained to diagnose, monitor and medically or surgically treat all ocular and visual disorders. This includes problems affecting the eye and its component structures, the eyelids, the orbit and the visual pathways. In so doing, an ophthalmologist prescribes vision services, including glasses and contact lenses.

21 WORTHEN RD, Lexington, MA 02421

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Other Identifiers 3

Medicare PINNX2629MA

Medicare UPING36555MA

Medicaid3173844MA

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Anthem Blue Cross and Blue Sheld, Anthem Blue Cross and Blue Shield, Blue Cross and Blue Shield of Montana and more.Insurance ›

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Dr. Olivia Liao Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

PECOS PAC ID7113935495

PECOS Enrollment IDI20110315000285

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

Medicare enrollment records show Olivia Liao reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Lexington Eye Associates - Bid

Same address

Ophthalmology

21 WORTHEN RD
Lexington, MA 02421

Reassigned Medicare billing, Massachusetts enrollment
37 clinicians in this Medicare group

NPI 1801204714 (781) 862-1620

Lexington Eye Associates, Inc

Same address

Ophthalmology

21 WORTHEN RD
Lexington, MA 02421

Reassigned Medicare billing, Massachusetts enrollment
39 clinicians in this Medicare group

NPI 1467502757 (781) 862-1620

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 13

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 complete exam of visual system 92014

An established patient complete exam of the visual system involves a thorough check of your eyes and vision. It assesses eye health, checks for diseases, and measures your ability to see clearly at different distances. It's a routine, non-invasive procedure.

866 services857 patients

Imaging of optic nerve 92133

Imaging of the optic nerve is a non-invasive procedure that captures detailed pictures of your optic nerve. It helps doctors assess eye health, particularly for conditions like glaucoma. It's painless, quick, and uses safe technology like MRI or OCT (Optical Coherence Tomography).

146 services143 patients

Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more 99214

This is a routine check-up for patients who have previously visited our clinic. It involves a comprehensive review of your health and any ongoing treatments. The consultation lasts between 30-39 minutes, allowing enough time to discuss any concerns.

141 services122 patients

Imaging of retina 92134

Imaging of the retina is a non-invasive procedure that captures detailed images of your eye's interior. This helps detect conditions like macular degeneration or retinal detachment. It's painless and takes only a few minutes.

110 services106 patients

Photography of the retina 92250

Photography of the retina, also known as retinal imaging, is a non-invasive procedure that captures images of the back of your eye. This helps doctors identify and monitor conditions like glaucoma, macular degeneration, or diabetic retinopathy. It's painless and quick, often part of a routine eye exam.

85 services76 patients

Exam of visual field with extended testing 92083

An extended visual field exam is a detailed test to evaluate your peripheral (side) vision. It helps to detect any potential blind spots which may not be noticeable in daily life. These could be caused by eye diseases like glaucoma, or neurological conditions.

77 services73 patients

Established patient problem focused exam of visual system 92012

This is a routine check-up for existing patients focusing on the visual system. It involves examining your eyes to detect any potential issues or changes in your vision. It's a crucial part of maintaining good eye health.

75 services75 patients

Removal of cataract with insertion of prosthetic lens 66984

This is a procedure where a cloudy lens in your eye, known as a cataract, is removed. After removal, a clear artificial lens is inserted. This helps to restore your vision, enabling you to see clearly again.

71 services59 patients

Measurement of corneal curvature and depth of eye 92136

This procedure measures the shape and depth of your eye, specifically the cornea, the clear front surface. It helps in diagnosing conditions, planning for surgeries, or fitting contact lenses. It's non-invasive and painless.

55 services53 patients

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.

38 services36 patients

Removal of recurring cataract in lens capsule using a laser 66821

This procedure, known as YAG laser capsulotomy, treats cloudiness in the lens capsule following cataract surgery. A laser is used to create a small hole in the cloudy capsule, allowing light to pass through and restore clear vision. It's a quick, painless procedure.

14 services14 patients

New patient complete exam of visual system 92004

A new patient complete exam of the visual system is a thorough evaluation of your eyes and vision. It checks for any potential issues and assesses overall eye health. It includes tests for visual acuity, eye movement, and light response.

13 services13 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.

11 services11 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 02421 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

$144.11 typical visit price

range $63.72 – $189.86

Typical copayment $36.02 (range $15.93 – $47.46)

Most-billed visit code 99204

Established Patient

$78.84 typical visit price

range $21.07 – $155.29

Typical copayment $19.71 (range $5.26 – $38.82)

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.

DANIEL W TOLPIN MD

Ophthalmology

21 WORTHEN RD
LEXINGTON, MA 02421

Middlesex County (781) 862-1620

LEXINGTON EYE ASSOCIATES - HIGHLAND HEALTHCARE

Ophthalmology

21 WORTHEN RD
LEXINGTON, MA 02421

Middlesex County (781) 862-1620

LEXINGTON EYE ASSOCIATES, INC.

Ophthalmology

21 WORTHEN RD
LEXINGTON, MA 02421

Middlesex County (781) 862-1620

DR. JARED E DUNCAN M.D.

Ophthalmology (Pediatric Ophthalmology and Strabismus Specialist)

21 WORTHEN RD
LEXINGTON, MA 02421

Middlesex County (781) 862-1620

DR. ANN PAWLOWSKI BURNHAM M.D.

Ophthalmology

21 WORTHEN RD
LEXINGTON, MA 02421

Middlesex County (781) 862-1620

DR. JENNIFER MULLON M.D.

Ophthalmology

21 WORTHEN RD
LEXINGTON, MA 02421

Middlesex County (781) 862-1620

MS. SUZANNE MORSE-FORTIER LICSW

Social Worker

21 WORTHEN RD, SUITE 2
LEXINGTON, MA 02421

Middlesex County (781) 879-3257

DR. LI-WEI LIN M.D.

Ophthalmology

21 WORTHEN RD
LEXINGTON, MA 02421

Middlesex County (781) 862-1620

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 Olivia Liao's NPI number?

The NPI number for Olivia Liao is 1174502454. It was assigned to this individual provider in the NPPES registry on January 13, 2006.

Where is Olivia Liao located?

Olivia Liao practices at 21 Worthen Rd, Lexington, MA 02421. The listed phone number is (781) 862-1620.

What is Olivia Liao's specialty?

The primary specialty registered for this NPI is Ophthalmology with taxonomy code 207W00000X.

Is Olivia Liao enrolled in Medicare?

Yes. Olivia Liao is registered in the Medicare PECOS enrollment system.

Which organizations bill Medicare for Olivia Liao's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Olivia Liao reassigns Medicare benefits to 2 organizations: Lexington Eye Associates - Bid (Lexington, MA) and Lexington Eye Associates, Inc (Lexington, MA). 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 Olivia Liao's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Olivia Liao accept?

Health plans from Anthem Blue Cross and Blue Sheld, Anthem Blue Cross and Blue Shield, Blue Cross and Blue Shield of Montana, Blue Cross and Blue Shield of Oklahoma and Blue Cross and Blue Shield of Texas and 2 other insurers list Olivia Liao as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

When was this NPI record last updated?

The NPPES record for Olivia Liao was last updated on June 23, 2008. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 18 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.