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WESTCHESTER MEDICAL GROUP
NPI 1578645180
Internal Medicine in Torrance, CA

Active since October 20, 2006
2860 SEPULVEDA BLVD, TORRANCE, CA 90505(310) 863-9060(310) 868-8922 Get Directions Write a Review

NPPES record last updated: March 19, 2026. Verified against the NPPES registry weekly; last sync: October 18, 2026.

About Westchester Medical Group NPPES

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

WESTCHESTER MEDICAL GROUP (NPI 1578645180) is a healthcare organization registered as an internal medicine in Torrance, California and active in the NPI registry since October 2006. The organization lists Allen H. Pachtman, Partner, as its authorized official.

NPPES Registry Identity

NPI1578645180
Entity TypeOrganization
Primary Taxonomy207R00000X
Legal Business NameWESTCHESTER MEDICAL GROUP
Location Address2860 SEPULVEDA BLVDTorrance, CA 90505-2803
Mailing Address2896 Orange Ave Ste 210Signal Hill, CA 90755-1803 · (310) 863-9060 · Fax (310) 868-8922
Phone(310) 863-9060
Fax(310) 868-8922
Organization SubpartNo
Authorized OfficialAllen H. PachtmanPartner · (310) 863-9060
Enumeration DateOctober 20, 2006
Last NPPES UpdateMarch 19, 2026
NPPES CertifiedMarch 19, 2026
✔ NPI 1578645180 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207R00000X
Definition
A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.
2860 SEPULVEDA BLVD, Torrance, CA 90505
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Group Practice 1

Group TaxonomyThis provider is a business group of one or more individual practitioners, who practice with different areas of specialization.193200000X MULTI-SPECIALTY GROUP

Medicare Participation & PECOS CMS

Medicare enrollment and the clinicians who bill Medicare through this organization, from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Westchester Medical Group is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Clinicians Billing Medicare Through This Organization

5

Medicare enrollment records show 5 clinicians reassign Medicare billing to Westchester Medical Group, which bills Medicare for the services they deliver. Of these, 1 practice at this address and 5 within 10 miles. They are listed nearest first.

Clinicians, nearest first (5)

Allen Pachtman, M.D.
Internal Medicine
NPI 1225110802
2860 SEPULVEDA BLVD
Torrance, CA 90505
(310) 863-9060
✔ PECOS✔ Accepts MedicareSame address
Jeffrey Steinberg, M.D.
Internal Medicine
NPI 1801862503
3330 LOMITA BLVD
Torrance, CA 90505
(310) 784-8770
✔ PECOS✔ Accepts Medicare0.9 mi
David Weiss, M.D.
Internal Medicine
NPI 1609958289
23560 MADISON ST STE 103
Torrance, CA 90505
(310) 325-9200
✔ PECOS1.0 mi
Gail Levee
Internal Medicine
NPI 1578500021
510 N PROSPECT AVE 304
Redondo Beach, CA 90277
(310) 372-8005
✔ PECOS2.4 mi
Robert Reiss, MD
Internal Medicine
NPI 1588746150
501 DEEP VALLEY DR STE 100
Rolling Hills Estates, CA 90274
(310) 670-1120
✔ PECOS✔ Accepts Medicare4.1 mi

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

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 Westchester Medical Group's NPI number?

The NPI number for Westchester Medical Group is 1578645180. It was assigned to this organization in the NPPES registry on October 20, 2006.

Where is Westchester Medical Group located?

Westchester Medical Group is located at 2860 Sepulveda Blvd, Torrance, CA 90505. The listed phone number is (310) 863-9060.

What is Westchester Medical Group's specialty?

The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.

Is Westchester Medical Group enrolled in Medicare?

Yes. Westchester Medical Group is registered in the Medicare PECOS enrollment system.

How many clinicians bill Medicare through Westchester Medical Group?

According to the CMS Revalidation Reassignment List (October 2026 release), 5 clinicians, all in Internal Medicine, reassign their Medicare billing to Westchester Medical Group. A 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 the clinician's services. Of these, 1 practice at this address and 5 within 10 miles. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

When was this NPI record last updated?

The NPPES record for Westchester Medical Group was last updated on March 19, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 7 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.