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MARK DAVIDSON MD INC
NPI 1033142344
Internal Medicine - Gastroenterology in Los Angeles, CA

Active since July 09, 2006
8631 W 3RD ST # 1135E, LOS ANGELES, CA 90048(310) 855-0222(310) 652-1905 Get Directions Write a Review

NPPES record last updated: May 3, 2024. Verified against the NPPES registry weekly; last sync: November 01, 2026.

About Mark Davidson Md Inc NPPES

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

MARK DAVIDSON MD INC (NPI 1033142344) is a healthcare organization registered as a gastroenterology in Los Angeles, California and active in the NPI registry since July 2006. The organization lists Mark Mehrdad Davidson, President, as its authorized official.

NPPES Registry Identity

NPI1033142344
Entity TypeOrganization
Primary Taxonomy207RG0100X
Legal Business NameMARK DAVIDSON MD INC
Location Address8631 W 3RD ST # 1135ELos Angeles, CA 90048-5901
Mailing AddressPo Box 7487Beverly Hills, CA 90212-7487 · (310) 855-0222 · Fax (310) 652-1905
Phone(310) 855-0222
Fax(310) 652-1905
Organization SubpartNo
Authorized OfficialMark Mehrdad DavidsonPresident · (310) 855-0222
Enumeration DateJuly 9, 2006
Last NPPES UpdateMay 3, 2024
NPPES CertifiedApril 23, 2024
✔ NPI 1033142344 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal Medicine · GastroenterologyAllopathic & Osteopathic Physicians
Taxonomy Code207RG0100X
License✔ Licensed in CA · A67586
Definition
An internist who specializes in diagnosis and treatment of diseases of the digestive organs including the stomach, bowels, liver and gallbladder. This specialist treats conditions such as abdominal pain, ulcers, diarrhea, cancer and jaundice and performs complex diagnostic and therapeutic procedures using endoscopes to visualize internal organs.
8631 W 3RD ST # 1135E, Los Angeles, CA 90048
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Group Practice 1

Group TaxonomyThis provdier is a business group of one or more individual practitioners, all of who practice with the same area of specialization.193400000X MULTIPLE SINGLE 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)

Mark Davidson Md Inc is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Clinicians Billing Medicare Through This Organization

2

Medicare enrollment records show 2 clinicians reassign Medicare billing to Mark Davidson MD Inc, which bills Medicare for the services they deliver. Of these, 1 practice at this address. They are listed nearest first.

Clinicians, nearest first (2)

Mark Davidson, M.D.
Gastroenterology
NPI 1164459178
8631 W 3RD ST 1135-E
Los Angeles, CA 90048
(310) 855-0222
✔ PECOSSame address
Cameron Sikavi, MD
Gastroenterology
NPI 1114303302
3440 LOMITA BLVD STE 320
Torrance, CA 90505
(310) 534-8200
✔ PECOS✔ Accepts Medicare18 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 Mark Davidson MD Inc's NPI number?

The NPI number for Mark Davidson MD Inc is 1033142344. It was assigned to this organization in the NPPES registry on July 9, 2006.

Where is Mark Davidson MD Inc located?

Mark Davidson MD Inc is located at 8631 W 3rd St # 1135E, Los Angeles, CA 90048. The listed phone number is (310) 855-0222.

What is Mark Davidson MD Inc's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Gastroenterology, with taxonomy code 207RG0100X.

Is Mark Davidson MD Inc enrolled in Medicare?

Yes. Mark Davidson MD Inc is registered in the Medicare PECOS enrollment system.

How many clinicians bill Medicare through Mark Davidson MD Inc?

According to the CMS Revalidation Reassignment List (October 2026 release), 2 clinicians, all in Gastroenterology, reassign their Medicare billing to Mark Davidson MD Inc. 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. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

When was this NPI record last updated?

The NPPES record for Mark Davidson MD Inc was last updated on May 3, 2024. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 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.