Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Cristy Ku, M.D., PH.D.

Ophthalmology Physician in Sacramento, CA · enumerated 2016.

Data current as of Jul 13, 2026 · sourced from CMS NPPES

National Provider Identifier

1235592361

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Registry record

Entity type Individual (Type 1)

Name Cristy Ku

Credential M.D., PH.D.

Sex Female

Practice address 4860 Y St Ste 2400, Sacramento, CA, 95817

Phone (503) 494-8386

Enumeration date Apr 5, 2016

Last updated in NPPES Sep 26, 2023

Taxonomy & licenses

207W00000X Ophthalmology Physician Allopathic & Osteopathic Physicians · License A171814 (CA) Secondary

207WX0107X Retina Specialist (Ophthalmology) Physician Allopathic & Osteopathic Physicians · License A171814 (CA) Secondary

207WX0107X Retina Specialist (Ophthalmology) Physician Allopathic & Osteopathic Physicians · License U6002 (TX) Secondary

207W00000X Ophthalmology Physician Allopathic & Osteopathic Physicians · License U6002 (TX) Primary

MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD credential

What is an NPI number?

A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes, even if the provider moves or changes specialty.

Read the full guide → Validate an NPI →

Frequently asked questions

Is NPI 1235592361 active?

Yes, as of the latest NPPES snapshot, NPI 1235592361 is active (record last updated 2023-09-26).

How do I verify Cristy Ku's NPI record?

Cross-check NPI 1235592361 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2023-09-26.