KRISTINE B LY
NPI 1437905783
Optometrist in Boston, MA

Q: What is Kristine Ly's NPI number?

The NPI number for Kristine Ly is 1437905783. It was assigned to this individual provider in the NPPES registry on April 27, 2024.

Q: What is Kristine Ly's specialty?

The primary specialty registered for this NPI is Optometrist with taxonomy code 152W00000X.

Q: When was this NPI record last updated?

The NPPES record for Kristine Ly was last updated on February 15, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 8 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.

Active since April 27, 2024PECOS EnrolledAccepts Medicare Assignment

260 TREMONT ST, BOSTON, MA 02116(617) 636-4600 Get Directions Write a Review

NPPES record last updated: February 15, 2026. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: Mar 15, 2025, Apr 27, 2024 (2 updates tracked since 2024).

On this page

About Kristine B Ly NPPES

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

KRISTINE B LY (NPI 1437905783) is an individual optometrist in Boston, Massachusetts, licensed in Massachusetts (OPT8254) and active in the NPI registry since April 2024. She is enrolled in Medicare PECOS, is affiliated with Tufts Medical Center, and is a graduate of Other (2024).

NPPES Registry Identity

NPI1437905783

Entity TypeIndividualFemale

Primary Taxonomy152W00000X

Provider Legal NameKRISTINE B LY

Location Address260 TREMONT STBoston, MA 02116-5603

Mailing Address99 Kneeland St Apt 908Boston, MA 02111-2440 · (702) 576-1695

Phone(617) 636-4600

Sole ProprietorYes

Medical School CMSOtherGraduated 2024

Enumeration DateApril 27, 2024

Last NPPES UpdateFebruary 15, 20262 updates tracked since enumeration

NPPES CertifiedFebruary 15, 2026

✔ NPI 1437905783 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyOptometristEye and Vision Services Providers

Taxonomy Code152W00000X

License✔ Licensed in MA · OPT8254

Definition

Doctors of optometry (ODs) are the primary health care professionals for the eye. Optometrists examine, diagnose, treat, and manage diseases, injuries, and disorders of the visual system, the eye, and associated structures as well as identify related systemic conditions affecting the eye. An optometrist has completed pre-professional undergraduate education in a college or university and four years of professional education at a college of optometry, leading to the doctor of optometry (O.D.) degree. Some optometrists complete an optional residency in a specific area of practice. Optometrists are eye health care professionals state-licensed to diagnose and treat diseases and disorders of the eye and visual system.

260 TREMONT ST, Boston, MA 02116

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Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Blue Cross and Blue Shield of Montana, Blue Cross and Blue Shield of Oklahoma, Blue Cross and Blue Shield of Texas 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 and accepts Medicare assignment

Kristine B Ly 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 ID5890206510

PECOS Enrollment IDI20250618002188

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

Pratt Ophthalmology Associates Inc

0.1 mi

Ophthalmology

800 WASHINGTON ST, BOX 1013
Boston, MA 02111

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

NPI 1083660534 (617) 636-5000

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Hospital Affiliations CMS Care Compare

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

Tufts Medical Center

Acute Care Hospitals · Boston, MA

3/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number220116

Location800 Washington StreetBoston, MA 02111 · Suffolk County

Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 02116 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.

CHUKWUEMEKA JOHNSON ACHONU OD

Optometrist

260 TREMONT ST
BOSTON, MA 02116

Suffolk County (617) 636-4600

ELIANA FIELD

Physical Therapist

260 TREMONT ST, BIEWEND 7
BOSTON, MA 02116

Suffolk County (617) 636-5175

MATTHEW PENNEY PT

Physical Therapist

260 TREMONT ST
BOSTON, MA 02116

Suffolk County (617) 636-5175

ALLISON MARIE HYTTINEN OD

Optometrist

260 TREMONT ST
BOSTON, MA 02116

Suffolk County (800) 231-3316

ALLISON ELIZABETH RESNIK

Student in an Organized Health Care Education/Training Program

260 TREMONT ST
BOSTON, MA 02116

Suffolk County (176) 364-6006

NEW ENGLAND ORTHOTIC & PROSTHETIC SYSTEMS, LLC

Prosthetic/Orthotic Supplier

260 TREMONT ST
BOSTON, MA 02116

Suffolk County (617) 830-2547

JAMES TAEKYOON KWAN

Ophthalmology

260 TREMONT ST
BOSTON, MA 02116

Suffolk County (617) 636-4600

DR. BRADLEY ARVEL HANSEN M.D.

Ophthalmology

260 TREMONT ST, FLOORS 9-11
BOSTON, MA 02116

Suffolk County (617) 636-4600

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 Kristine Ly's NPI number?

The NPI number for Kristine Ly is 1437905783. It was assigned to this individual provider in the NPPES registry on April 27, 2024.

Where is Kristine Ly located?

Kristine Ly practices at 260 Tremont St, Boston, MA 02116. The listed phone number is (617) 636-4600.

What is Kristine Ly's specialty?

The primary specialty registered for this NPI is Optometrist with taxonomy code 152W00000X.

Is Kristine Ly enrolled in Medicare?

Yes. Kristine Ly 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 Kristine Ly's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Kristine Ly reassigns Medicare benefits to Pratt Ophthalmology Associates Inc (Boston, MA). 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 Kristine Ly's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Kristine Ly accept?

Health plans from Blue Cross and Blue Shield of Montana, Blue Cross and Blue Shield of Oklahoma, Blue Cross and Blue Shield of Texas and Taro Health list Kristine Ly 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.

Is Kristine Ly affiliated with any hospitals?

According to CMS data, Kristine Ly is affiliated with Tufts Medical Center.

When was this NPI record last updated?

The NPPES record for Kristine Ly was last updated on February 15, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 8 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.