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DR. MARK F TSAI M.D.
NPI 1962566950
Internal Medicine - Gastroenterology in Northridge, CA

Active since December 21, 2006PECOS Enrolled
18350 ROSCOE BLVD, SUITE 210, NORTHRIDGE, CA 91325(818) 772-2798 Get Directions Write a Review

NPPES record last updated: July 8, 2007. Verified against the NPPES registry weekly; last sync: September 06, 2026.

About Dr. Mark F Tsai M.d. NPPES

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

DR. MARK F TSAI M.D. (NPI 1962566950) is an individual gastroenterology provider in Northridge, California, licensed in California (A38579) and active in the NPI registry since December 2006. He is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1962566950
Entity TypeIndividualMale
Primary Taxonomy207RG0100X
Provider Legal NameDR. MARK F TSAICredential: M.D.
Location Address18350 ROSCOE BLVD, SUITE 210Northridge, CA 91325-4109
Mailing Address18350 Roscoe Blvd, Suite 210Northridge, CA 91325-4109 · (818) 772-2798
Phone(818) 772-2798
Sole ProprietorYes
Enumeration DateDecember 21, 2006
Last NPPES UpdateJuly 8, 2007
✔ NPI 1962566950 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 · A38579
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.
18350 ROSCOE BLVD, Northridge, CA 91325
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Other Names 1

Former Name (1)Ming F Tsai M.d.

Other Identifiers 1

Medicare UPINC35493

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Dr. Mark F Tsai M.d. 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 91325 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. ANDREW CHANG M.D.
Ophthalmology
18350 ROSCOE BLVD, SUITE 101
NORTHRIDGE, CA 91325
Los Angeles County (818) 349-8300
NORTHRIDGE FACIAL PLASTIC SURGERY MEDICAL GROUP A PROFESSIONAL CORP
Clinic/Center (Ambulatory Surgical)
18350 ROSCOE BLVD, #318A
NORTHRIDGE, CA 91325
Los Angeles County (818) 993-9824
DR. FARES RABADI M.D.
Internal Medicine
18350 ROSCOE BLVD, SUITE 514
NORTHRIDGE, CA 91325
Los Angeles County (818) 775-0519
SASIPAN JETAWATANA
Pharmacist
18350 ROSCOE BLVD
NORTHRIDGE, CA 91325
Los Angeles County (818) 688-5772
DR. RITOO GAGNEJA M.D.
Family Medicine
18350 ROSCOE BLVD, SUITE 600
NORTHRIDGE, CA 91325
Los Angeles County (818) 727-1515
FAMILY MEDICINE ASSOCIATES OF NORTHRIDGE A MEDICAL GROUP INC
Family Medicine
18350 ROSCOE BLVD, SUITE 600
NORTHRIDGE, CA 91325
Los Angeles County (818) 727-1515
JAMES CHRISTOPHER ANDREWS M.D.
Otolaryngology (Otology & Neurotology)
18350 ROSCOE BLVD, SUITE 518
NORTHRIDGE, CA 91325
Los Angeles County (818) 349-0680
DR. ADEL F. JABOUR M.D.
Surgery
18350 ROSCOE BLVD, SUITE #200
NORTHRIDGE, CA 91325
Los Angeles County (818) 885-7905

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 Tsai's NPI number?

The NPI number for Mark Tsai is 1962566950. It was assigned to this individual provider in the NPPES registry on December 21, 2006. The provider is also known as Ming F Tsai M.D..

Where is Mark Tsai located?

Mark Tsai practices at 18350 Roscoe Blvd Suite 210, Northridge, CA 91325. The listed phone number is (818) 772-2798.

What is Mark Tsai's specialty?

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

Is Mark Tsai enrolled in Medicare?

Yes. Mark Tsai is registered in the Medicare PECOS enrollment system.

When was this NPI record last updated?

The NPPES record for Mark Tsai was last updated on July 8, 2007. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 19 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.