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DR. MARK D SCHAFER MD
NPI 1417948894
Internal Medicine in Tustin, CA

Active since November 03, 2005PECOS Enrolled
2742 DOW AVE, TUSTIN, CA 92780(714) 665-1661(714) 665-1669 Get Directions Write a Review

NPPES record last updated: February 8, 2018. Verified against the NPPES registry weekly; last sync: October 18, 2026.

About Dr. Mark D Schafer Md NPPES

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

DR. MARK D SCHAFER MD (NPI 1417948894) is an individual internal medicine provider in Tustin, California, licensed in California (G69584) and active in the NPI registry since November 2005. He is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1417948894
Entity TypeIndividualMale
Primary Taxonomy207R00000X
Provider Legal NameDR. MARK D SCHAFERCredential: MD
Location Address2742 DOW AVETustin, CA 92780-7242
Mailing Address2742 Dow AveTustin, CA 92780-7242 · (714) 665-1600
Phone(714) 665-1661
Fax(714) 665-1669
Sole ProprietorNo
Enumeration DateNovember 3, 2005
Last NPPES UpdateFebruary 8, 2018
✔ NPI 1417948894 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207R00000X
License✔ Licensed in CA · G69584
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.
2742 DOW AVE, Tustin, CA 92780
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Other Identifiers 1

Medicaid00G695840CA

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Dr. Mark D Schafer 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 Mark Schafer reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Memorialcare Medical Foundation
8.3 mi
Clinic/Center
17360 BROOKHURST ST
Fountain Valley, CA 92708
  • Reassigned Medicare billing, California enrollment
  • 948 clinicians in this Medicare group
NPI 1205167350 (877) 696-3622

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 92780 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 3

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

AMANDA M IMAI NP
Nurse Practitioner (Family)
2742 DOW AVE
TUSTIN, CA 92780
Orange County (714) 665-1600
BRISTOL PARK MEDICAL GROUP, INC
Exclusive Provider Organization
2742 DOW AVE
TUSTIN, CA 92780
Orange County (714) 665-1661
DR. ELIZABETH TSAI D.O.
Internal Medicine
2742 DOW AVE
TUSTIN, CA 92780
Orange County (714) 665-1600

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 Schafer's NPI number?

The NPI number for Mark Schafer is 1417948894. It was assigned to this individual provider in the NPPES registry on November 3, 2005.

Where is Mark Schafer located?

Mark Schafer practices at 2742 Dow Ave, Tustin, CA 92780. The listed phone number is (714) 665-1661.

What is Mark Schafer's specialty?

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

Is Mark Schafer enrolled in Medicare?

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

Which organization bills Medicare for Mark Schafer's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Mark Schafer reassigns Medicare benefits to Memorialcare Medical Foundation (Fountain Valley, 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 Mark Schafer'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 Mark Schafer was last updated on February 8, 2018. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 8 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.