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HONGYING TAN MD
NPI 1356303846
Pathology - Anatomic Pathology & Clinical Pathology in Los Angeles, CA

Active since April 03, 2006PECOS Enrolled
2131 W 3RD ST, LOS ANGELES, CA 90057(213) 484-7935 Get Directions Write a Review

NPPES record last updated: April 18, 2013. Verified against the NPPES registry weekly; last sync: November 01, 2026.

About Hongying Tan Md NPPES

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

HONGYING TAN MD (NPI 1356303846) is an individual anatomic pathology & clinical pathology provider in Los Angeles, California, licensed in California (A85887) and active in the NPI registry since April 2006. She is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1356303846
Entity TypeIndividualFemale
Primary Taxonomy207ZP0102X
Provider Legal NameHONGYING TANCredential: MD
Location Address2131 W 3RD STLos Angeles, CA 90057-1901
Mailing Address5700 Southwyck BlvdToledo, OH 43614-1509 · (800) 288-8325 · Fax (419) 866-5453
Phone(213) 484-7935
Sole ProprietorNo
Enumeration DateApril 3, 2006
Last NPPES UpdateApril 18, 2013
✔ NPI 1356303846 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyPathology · Anatomic Pathology & Clinical PathologyAllopathic & Osteopathic Physicians
Taxonomy Code207ZP0102X
License✔ Licensed in CA · A85887
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.
Also ListedPathology · CytopathologyTaxonomy 207ZC0500X · License A85887 (CA)
2131 W 3RD ST, Los Angeles, CA 90057
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Other Identifiers 3

Medicare ID-Type UnspecifiedWA85887ACA · Ppin
Medicare UPINI45351CA
Medicaid00A858870CA

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Hongying Tan 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.

Medicare Billing Reassignment

Medicare enrollment records show Hongying Tan reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

St. Vincent Pathology Medical Group
2.4 mi
Cytopathology
1300 N VERMONT AVE
Los Angeles, CA 90027
  • Reassigned Medicare billing, California enrollment
  • 5 clinicians in this Medicare group
NPI 1689635773 (323) 913-4934

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

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 90057 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.

DIANE L. JOHNSON, M.D., INC.
Internal Medicine (Critical Care Medicine)
2131 W 3RD ST
LOS ANGELES, CA 90057
Los Angeles County (213) 484-7111
ANDREW KASSINOVE, MD; INC.
Emergency Medicine
2131 W 3RD ST
LOS ANGELES, CA 90057
Los Angeles County (213) 484-7301
PAUL HSIEH MD
Pathology (Anatomic Pathology & Clinical Pathology)
2131 W 3RD ST
LOS ANGELES, CA 90057
Los Angeles County (213) 484-7935
ST VINCENT RADIOLOGICAL MEDICAL GROUP
Radiology (Diagnostic Radiology)
2131 W 3RD ST
LOS ANGELES, CA 90057
Los Angeles County (213) 484-7901
ST VINCENT MEDICAL CENTER
General Acute Care Hospital
2131 W 3RD ST
LOS ANGELES, CA 90057
Los Angeles County (213) 484-7402
DEBRA LYNN COOK PA-C
Physician Assistant (Surgical)
2131 W 3RD ST
LOS ANGELES, CA 90057
Los Angeles County (310) 484-7600
ST. VINCENT ANESTHESIA MEDICAL GROUP, INC.
Anesthesiology
2131 W 3RD ST
LOS ANGELES, CA 90057
Los Angeles County (213) 484-7111
JIE REN M.D. INC.
Anesthesiology
2131 W 3RD ST
LOS ANGELES, CA 90057
Los Angeles County (213) 484-7111

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 Hongying Tan's NPI number?

The NPI number for Hongying Tan is 1356303846. It was assigned to this individual provider in the NPPES registry on April 3, 2006.

Where is Hongying Tan located?

Hongying Tan practices at 2131 W 3rd St, Los Angeles, CA 90057. The listed phone number is (213) 484-7935.

What is Hongying Tan's specialty?

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

Is Hongying Tan enrolled in Medicare?

Yes. Hongying Tan is registered in the Medicare PECOS enrollment system.

Which organization bills Medicare for Hongying Tan's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Hongying Tan reassigns Medicare benefits to St. Vincent Pathology Medical Group (Los Angeles, CA). The 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 Hongying Tan'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 Hongying Tan was last updated on April 18, 2013. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 13 years 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.