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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.

HAYK SIMONYAN MD
NPI 1134860877
Pathology - Anatomic Pathology & Clinical Pathology in Los Angeles, CA

Active since April 06, 2022PECOS Enrolled
10833 LE CONTE AVE, LOS ANGELES, CA 90095(310) 206-0944(310) 267-3561 Get Directions Write a Review

NPPES record last updated: June 12, 2026. Verified against the NPPES registry weekly; last sync: August 02, 2026.

Record update history: Jun 19, 2025, Jul 19, 2022, Apr 8, 2022 (3 updates tracked since 2022).

About Hayk Simonyan Md NPPES

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

HAYK SIMONYAN MD (NPI 1134860877) is an individual anatomic pathology & clinical pathology provider in Los Angeles, California, licensed in California (A207483) and active in the NPI registry since April 2022. He is enrolled in Medicare PECOS and maintains a secondary practice location in Washington.

NPPES Registry Identity

NPI1134860877
Entity TypeIndividualMale
Primary Taxonomy207ZP0102X
Provider Legal NameHAYK SIMONYANCredential: MD
Location Address10833 LE CONTE AVELos Angeles, CA 90095-3075
Mailing Address5767 W Century Blvd Ste 400Los Angeles, CA 90045-5631
Phone(310) 206-0944
Fax(310) 267-3561
Sole ProprietorYes
Enumeration DateApril 6, 2022
Last NPPES UpdateJune 12, 20263 updates tracked since enumeration
NPPES CertifiedJune 12, 2026
✔ NPI 1134860877 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPathology · Anatomic Pathology & Clinical PathologyAllopathic & Osteopathic Physicians
Taxonomy Code207ZP0102X
License✔ Licensed in CA · A207483
Definition
A pathologist deals with the causes and nature of disease and contributes to diagnosis, prognosis and treatment through knowledge gained by the laboratory application of the biologic, chemical and physical sciences. A pathologist uses information gathered from the microscopic examination of tissue specimens, cells and body fluids, and from clinical laboratory tests on body fluids and secretions for the diagnosis, exclusion and monitoring of disease.
10833 LE CONTE AVE, Los Angeles, CA 90095
Open in Google Maps ↗

Secondary Practice Location 1

Location 12300 M St NW Fl 7Washington, DC 20037-1434 · Phone (202) 677-6600

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Hayk Simonyan 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.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 90095 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
$142.39 typical visit price
range $62.96 – $187.60
Typical copayment $35.59 (range $15.74 – $46.90)
Most-billed visit code 99204
Established Patient
$109.96 typical visit price
range $20.84 – $153.61
Typical copayment $27.49 (range $5.21 – $38.40)
Most-billed visit code 99214
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.

DR. JENNIFER A FULCHER M.D., PH.D.
Internal Medicine (Infectious Disease)
10833 LE CONTE AVE, CHS 37-121
LOS ANGELES, CA 90095
Los Angeles County (310) 825-7225
LEE HAROLD HILBORNE MD
Pathology (Anatomic Pathology & Clinical Pathology)
10833 LE CONTE AVE, STE B-186 CHS
LOS ANGELES, CA 90095
Los Angeles County (310) 794-8285
PETER TONTONOZ MD
Pathology (Anatomic Pathology)
10833 LE CONTE AVE, STE B-186 CHS
LOS ANGELES, CA 90095
Los Angeles County (310) 794-8285
HSIN Y LEE MD
Radiology (Diagnostic Radiology)
10833 LE CONTE AVE
LOS ANGELES, CA 90095
Los Angeles County (310) 825-4721
COLIN J. WELLS MD
Radiology (Diagnostic Radiology)
10833 LE CONTE AVE
LOS ANGELES, CA 90095
Los Angeles County (310) 301-6800
RODNEY L TEICHNER MD
Anesthesiology
10833 LE CONTE AVE
LOS ANGELES, CA 90095
Los Angeles County (310) 825-9111
DR. LLOYD EDWARD GREASER III M.D.
Radiology (Diagnostic Radiology)
10833 LE CONTE AVE, DEPARTMENT OF RADIOLOGY
LOS ANGELES, CA 90095
Los Angeles County (310) 825-4321
BRANDON KEN ITAGAKI M.D.
Internal Medicine
10833 LE CONTE AVE
LOS ANGELES, CA 90095
Los Angeles County (310) 825-8307

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 Hayk Simonyan's NPI number?

The NPI number for Hayk Simonyan is 1134860877. It was assigned to this individual provider in the NPPES registry on April 6, 2022.

Where is Hayk Simonyan located?

Hayk Simonyan practices at 10833 Le Conte Ave, Los Angeles, CA 90095. The listed phone number is (310) 206-0944.

What is Hayk Simonyan's specialty?

The primary specialty registered for this NPI is Pathology, specializing in Anatomic Pathology & Clinical Pathology, with taxonomy code 207ZP0102X.

Is Hayk Simonyan enrolled in Medicare?

Yes. Hayk Simonyan is registered in the Medicare PECOS enrollment system.

When was this NPI record last updated?

The NPPES record for Hayk Simonyan was last updated on June 12, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 55 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.