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

ANASTASIA POZDNYAKOVA PIERSA MD
NPI 1023696564
Anesthesiology in Santa Clara, CA

Active since March 29, 2021PECOS Enrolled
700 LAWRENCE EXPY, SANTA CLARA, CA 95051(408) 851-1000 Get Directions Write a Review

NPPES record last updated: September 16, 2026. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Sep 16, 2026, Nov 10, 2025, Sep 27, 2024 and 1 more (4 updates tracked since 2021).

About Anastasia Pozdnyakova Piersa Md NPPES

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

ANASTASIA POZDNYAKOVA PIERSA MD (NPI 1023696564) is an individual anesthesiology provider in Santa Clara, California, licensed in California (A199447) and active in the NPI registry since March 2021. She is enrolled in Medicare PECOS, maintains 2 additional practice locations, and is a graduate of University Of Chicago, Pritzker School Of Medicine (2021).

NPPES Registry Identity

NPI1023696564
Entity TypeIndividualFemale
Primary Taxonomy207L00000X
Provider Legal NameANASTASIA POZDNYAKOVA PIERSACredential: MD
Location Address700 LAWRENCE EXPYSanta Clara, CA 95051-5173
Mailing Address700 Lawrence ExpySanta Clara, CA 95051-5173 · (408) 851-1000
Phone(408) 851-1000
Sole ProprietorNo
Medical School CMSUniversity Of Chicago, Pritzker School Of MedicineGraduated 2021
Enumeration DateMarch 29, 2021
Last NPPES UpdateSeptember 16, 20264 updates tracked since enumeration
NPPES CertifiedSeptember 16, 2026
✔ NPI 1023696564 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyAnesthesiologyAllopathic & Osteopathic Physicians
Taxonomy Code207L00000X
Licenses✔ Licensed in CA · A199447✔ Licensed in MA · 288650
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.
700 LAWRENCE EXPY, Santa Clara, CA 95051
Open in Google Maps ↗

Secondary Practice Locations 2

Location 155 Fruit St GRB-444Boston, MA 02114-2696 · Phone (617) 726-2000
Location 2300 Pasteur DrStanford, CA 94305-2200 · Phone (650) 723-4000

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Anastasia Pozdnyakova Piersa Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

PECOS PAC ID4789092206
PECOS Enrollment IDI20251023004567
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

2

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

Stanford Health Care
12 mi
General Acute Care Hospital
300 PASTEUR DRIVE
Stanford, CA 94305
  • Reassigned Medicare billing, California enrollment
  • 4,258 clinicians in this Medicare group
NPI 1437292927 (650) 723-4000
Lpch Medical Group Div Of Lucile
12 mi
Children
725 WELCH RD
Palo Alto, CA 94304
  • Reassigned Medicare billing, California enrollment
  • 3,617 clinicians in this Medicare group
NPI 1417907940 (650) 498-6762

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

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.

HUI WU MD
Hospitalist
700 LAWRENCE EXPY
SANTA CLARA, CA 95051
Santa Clara County (408) 605-7333
REBEKAH LYNN KECK
Dietitian, Registered
700 LAWRENCE EXPY
SANTA CLARA, CA 95051
Santa Clara County (408) 475-7208
VALERIE ROBERSON RDN
Dietitian, Registered
700 LAWRENCE EXPY
SANTA CLARA, CA 95051
Santa Clara County (408) 851-1000
LAARNI OBIS YET RRT
Respiratory Therapist, Registered
700 LAWRENCE EXPY
SANTA CLARA, CA 95051
Santa Clara County (408) 851-7022
NETALI ADIEL
Doula
700 LAWRENCE EXPY
SANTA CLARA, CA 95051
Santa Clara County (408) 851-1000
DR. KHANH-LINH GUERRERO PHARM.D.
Pharmacist
700 LAWRENCE EXPY
SANTA CLARA, CA 95051
Santa Clara County (408) 851-7500
KRISTINE MAE MANGALINDAN M.D.
Student in an Organized Health Care Education/Training Program
700 LAWRENCE EXPY
SANTA CLARA, CA 95051
Santa Clara County (408) 851-1000
PATRICK NGUYEN PHARM.D.
Pharmacist
700 LAWRENCE EXPY, DEPT 301
SANTA CLARA, CA 95051
Santa Clara County (408) 851-7492

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 Anastasia Piersa's NPI number?

The NPI number for Anastasia Piersa is 1023696564. It was assigned to this individual provider in the NPPES registry on March 29, 2021.

Where is Anastasia Piersa located?

Anastasia Piersa practices at 700 Lawrence Expy, Santa Clara, CA 95051. The listed phone number is (408) 851-1000.

What is Anastasia Piersa's specialty?

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

Is Anastasia Piersa enrolled in Medicare?

Yes. Anastasia Piersa is registered in the Medicare PECOS enrollment system.

Which organizations bill Medicare for Anastasia Piersa's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Anastasia Piersa reassigns Medicare benefits to 2 organizations: Stanford Health Care (Stanford, CA) and Lpch Medical Group Div Of Lucile (Palo Alto, CA). 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 Anastasia Piersa's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

When was this NPI record last updated?

The NPPES record for Anastasia Piersa was last updated on September 16, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 37 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.