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SUNANDA CHATTERJEE MD
NPI 1265491641
Pathology - Anatomic Pathology & Clinical Pathology in South El Monte, CA

Active since March 22, 2006PECOS Enrolled
1701 SANTA ANITA AVE, SOUTH EL MONTE, CA 91733(626) 570-6597 Get Directions Write a Review

NPPES record last updated: September 11, 2025. Verified against the NPPES registry weekly; last sync: October 25, 2026.

About Sunanda Chatterjee Md NPPES

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

SUNANDA CHATTERJEE MD (NPI 1265491641) is an individual anatomic pathology & clinical pathology provider in South El Monte, California, licensed in California (A78811) and active in the NPI registry since March 2006. She is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1265491641
Entity TypeIndividualFemale
Primary Taxonomy207ZP0102X
Provider Legal NameSUNANDA CHATTERJEECredential: MD
Location Address1701 SANTA ANITA AVESouth El Monte, CA 91733-3482
Mailing AddressPo Box 10076Van Nuys, CA 91410-0076 · (805) 578-8300 · Fax (805) 578-8950
Phone(626) 570-6597
Sole ProprietorNo
Enumeration DateMarch 22, 2006
Last NPPES UpdateSeptember 11, 2025
✔ NPI 1265491641 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 · A78811
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 A78811 (CA)
1701 SANTA ANITA AVE, South El Monte, CA 91733
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Other Identifiers 1

Medicaid00A788110CA

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Sunanda Chatterjee 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 Sunanda Chatterjee reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

San Gabriel Valley Consulting Pathologists Medical Group, Inc.
Same address
Anatomic Pathology & Clinical Pathology
1701 SANTA ANITA AVE
South El Monte, CA 91733
  • Reassigned Medicare billing, California enrollment
  • 17 clinicians in this Medicare group
NPI 1700845179 (626) 570-6597

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

Areas of Expertise CMS Part B claims 9

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Pathology examination of tissue using a microscope, intermediate complexity 88305
A pathology examination of tissue with intermediate complexity involves studying a small sample of your body tissue under a microscope. This helps in identifying any abnormal cells or signs of disease. It's a detailed process requiring expert analysis to ensure accurate results.
82 services49 patients
Special stained specimen slides to examine tissue, each additional procedure 88341
Special stained specimen slides are used to analyze tissue in detail. In this process, extra procedures may be needed for a more thorough examination. These involve applying special stains to the tissue on slides, enhancing specific elements for closer study.
74 services15 patients
Special stained specimen slides to examine tissue including interpretation and report 88313
Special stained specimen slides are used to examine tissue samples. This involves applying special dyes to the tissue, which helps to highlight certain features under a microscope. The findings are then interpreted and a report is provided. This can aid in diagnosing various health conditions.
72 services28 patients
Special stained specimen slides to identify organisms including interpretation and report 88312
This service involves coloring specimen slides in a special way to help identify organisms. The colors make different parts of the organism stand out. Afterward, a detailed interpretation and report on the findings are provided.
53 services27 patients
Special stained specimen slides to examine tissue, initial procedure 88342
This procedure involves the use of specially stained slides to examine tissue samples. The initial process involves obtaining a small tissue sample from your body. This sample is then placed on a slide and stained with special dyes to highlight different structures and elements. The stained slide is then examined under a microscope to help diagnose any potential health issues.
21 services20 patients
Blood smear interpretation by physician with written report 85060
Blood smear interpretation is a lab test where your doctor examines a sample of your blood under a microscope. They look for abnormalities in your blood cells which can help diagnose various conditions. You'll receive a written report of the findings.
19 services17 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 91733 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 18

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

USHA GUPTA MD
Anesthesiology
1701 SANTA ANITA AVE
SOUTH EL MONTE, CA 91733
Los Angeles County (714) 347-1000
EL MONTE EMERGENCY MEDICAL ASSOCIATES, INC.
Emergency Medicine
1701 SANTA ANITA AVE
SOUTH EL MONTE, CA 91733
Los Angeles County (626) 350-7957
EVELYN Y. VALENTON, M.D., INC.
Anesthesiology
1701 SANTA ANITA AVE
SOUTH EL MONTE, CA 91733
Los Angeles County (626) 579-7777
ER CARE GROUP EL MONTE A MEDICAL CORPORATION
Emergency Medicine
1701 SANTA ANITA AVE
SOUTH EL MONTE, CA 91733
Los Angeles County (626) 940-5483
WEYJUIN ERIC CHAO M.D.
Emergency Medicine
1701 SANTA ANITA AVE
SOUTH EL MONTE, CA 91733
Los Angeles County (626) 579-7777
SYED MOHSIN SHAMIM ZAIDI
Emergency Medicine
1701 SANTA ANITA AVE
EL MONTE, CA 91733
Los Angeles County (626) 579-7777
AHMC GREATER EL MONTE COMMUNITY
General Acute Care Hospital
1701 SANTA ANITA AVE
SOUTH EL MONTE, CA 91733
Los Angeles County (626) 579-7777
DR. ASSIBI Z ABUDU M.D.
Emergency Medicine
1701 SANTA ANITA AVE
SOUTH EL MONTE, CA 91733
Los Angeles County (626) 350-7957

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 Sunanda Chatterjee's NPI number?

The NPI number for Sunanda Chatterjee is 1265491641. It was assigned to this individual provider in the NPPES registry on March 22, 2006.

Where is Sunanda Chatterjee located?

Sunanda Chatterjee practices at 1701 Santa Anita Ave, South El Monte, CA 91733. The listed phone number is (626) 570-6597.

What is Sunanda Chatterjee's specialty?

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

Is Sunanda Chatterjee enrolled in Medicare?

Yes. Sunanda Chatterjee is registered in the Medicare PECOS enrollment system.

Which organization bills Medicare for Sunanda Chatterjee's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Sunanda Chatterjee reassigns Medicare benefits to San Gabriel Valley Consulting Pathologists Medical Group, Inc. (South El Monte, 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 Sunanda Chatterjee'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 Sunanda Chatterjee was last updated on September 11, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 13 months 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.