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

LYDIA SHI-YU CHEN MD
NPI 1053998245
Anesthesiology in San Diego, CA

Q: What is Lydia Chen's NPI number?

The NPI number for Lydia Chen is 1053998245. It was assigned to this individual provider in the NPPES registry on March 25, 2021.

Q: What is Lydia Chen's specialty?

The primary specialty registered for this NPI is Anesthesiology with taxonomy code 207L00000X.

Q: When was this NPI record last updated?

The NPPES record for Lydia Chen was last updated on July 9, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 48 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 March 25, 2021PECOS Enrolled

200 W ARBOR DR, SAN DIEGO, CA 92103(800) 926-8273(888) 539-8781 Get Directions Write a Review

NPPES record last updated: July 9, 2026. Verified against the NPPES registry weekly; last sync: August 23, 2026.

Record update history: Jul 9, 2026, Mar 25, 2021 (2 updates tracked since 2021).

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About Lydia Shi-yu Chen Md NPPES

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

LYDIA SHI-YU CHEN MD (NPI 1053998245) is an individual anesthesiology provider in San Diego, California, licensed in California (206392) and active in the NPI registry since March 2021. She is enrolled in Medicare PECOS and maintains 3 additional practice locations.

NPPES Registry Identity

NPI1053998245

Entity TypeIndividualFemale

Primary Taxonomy207L00000X

Provider Legal NameLYDIA SHI-YU CHENCredential: MD

Location Address200 W ARBOR DRSan Diego, CA 92103-9000

Mailing AddressFile 57326Los Angeles, CA 90074-7326 · (800) 926-8273

Phone(800) 926-8273

Fax(888) 539-8781

Sole ProprietorNo

Enumeration DateMarch 25, 2021

Last NPPES UpdateJuly 9, 20262 updates tracked since enumeration

NPPES CertifiedJuly 9, 2026

✔ NPI 1053998245 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyAnesthesiologyAllopathic & Osteopathic Physicians

Taxonomy Code207L00000X

License✔ Licensed in CA · 206392

Definition

An anesthesiologist is trained to provide pain relief and maintenance, or restoration, of a stable condition during and immediately following an operation or an obstetric or diagnostic procedure. The anesthesiologist assesses the risk of the patient undergoing surgery and optimizes the patient's condition prior to, during and after surgery. In addition to these management responsibilities, the anesthesiologist provides medical management and consultation in pain management and critical care medicine. Anesthesiologists diagnose and treat acute, long-standing and cancer pain problems; diagnose and treat patients with critical illnesses or severe injuries; direct resuscitation in the care of patients with cardiac or respiratory emergencies, including the need for artificial ventilation; and supervise post-anesthesia recovery.

Also ListedStudent in an Organized Health Care Education/Training ProgramTaxonomy 390200000X

200 W ARBOR DR, San Diego, CA 92103

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Secondary Practice Locations 3

Location 19300 Campus Point DrLA Jolla, CA 92037-1300 · Phone (800) 926-8273 · Fax (888) 539-8781

Location 2630 W 168th StNew York, NY 10032-3725 · Phone (212) 305-2500

Location 36655 Alvarado RdSan Diego, CA 92120-5208 · Phone (800) 926-8273 · Fax (888) 539-8781

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Lydia Shi-yu Chen Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

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.

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.

DR. RAMIN MOTARJEMI M.D.

Internal Medicine (Geriatric Medicine)