Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Gemma Louise Chandratillake, MPHIL PH.D. M.S. CGC

Genetic Counselor (M.S.) in Menlo Park, CA · enumerated 2012.

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

National Provider Identifier

1487925186

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)

Name Dr. Gemma Louise Chandratillake

Credential MPHIL PH.D. M.S. CGC

Sex Female

Practice address 1350 Willow Rd, Suite 202, Menlo Park, CA, 94025

Phone (650) 752-1300

Enumeration date Jan 26, 2012

Last updated in NPPES Aug 25, 2013

Taxonomy & licenses

170300000X Genetic Counselor (M.S.) Other Service Providers Primary

Other identifiers

Identifier	Type	State	Issuer
GC000379	Other	CA	CALIFORNIA DEPARTMENT OF PUBLIC HEALTH GENETIC DISEASE SCREENING PROGRAM

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

What is the NPI number for Gemma Chandratillake?

The National Provider Identifier (NPI) for Gemma Chandratillake is 1487925186, a Type 1 (individual) record in the CMS NPPES registry.

Where does Gemma Chandratillake practice?

The practice location on file with NPPES is in Menlo Park, CA. Providers can have multiple locations; NPPES lists the primary practice address.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2013-08-25.