MARK KOWALCZYK
NPI 1376106344
Internal Medicine in San Diego, CA

Q: What is Mark Kowalczyk's NPI number?

The NPI number for Mark Kowalczyk is 1376106344. It was assigned to this individual provider in the NPPES registry on April 16, 2019.

Q: What is Mark Kowalczyk's specialty?

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

Q: When was this NPI record last updated?

The NPPES record for Mark Kowalczyk was last updated on May 19, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 17 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.

Active since April 16, 2019PECOS EnrolledAccepts Medicare Assignment

200 W ARBOR DR, SAN DIEGO, CA 92103(800) 926-8273(888) 539-8781 Get Directions Write a Review

NPPES record last updated: May 19, 2025. Verified against the NPPES registry weekly; last sync: November 01, 2026.

Record update history: May 19, 2025, Apr 16, 2019 (2 updates tracked since 2019).

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About Mark Kowalczyk NPPES

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

MARK KOWALCZYK (NPI 1376106344) is an individual internal medicine provider in San Diego, California, licensed in California (A180227) and active in the NPI registry since April 2019. He is enrolled in Medicare PECOS, maintains 3 additional practice locations, and is a graduate of University Of Washington School Of Medicine (2019).

NPPES Registry Identity

NPI1376106344

Entity TypeIndividualMale

Primary Taxonomy207R00000X

Provider Legal NameMARK KOWALCZYK

Location Address200 W ARBOR DRSan Diego, CA 92103-9000

Mailing AddressFile 57326Los Angeles, CA 90074-7326 · (800) 926-8273

Phone(800) 926-8273

Fax(888) 539-8781

Sole ProprietorNo

Medical School CMSUniversity Of Washington School Of MedicineGraduated 2019

Enumeration DateApril 16, 2019

Last NPPES UpdateMay 19, 20252 updates tracked since enumeration

NPPES CertifiedMay 19, 2025

✔ NPI 1376106344 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 3

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians

Taxonomy Code207R00000X

License✔ Licensed in CA · A180227

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.

Also ListedInternal Medicine · GastroenterologyTaxonomy 207RG0100X · License A180227 (CA)

Also ListedStudent in an Organized Health Care Education/Training ProgramTaxonomy 390200000X

200 W ARBOR DR, San Diego, CA 92103

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Secondary Practice Locations 3

Location 19300 Campus Point DrLA Jolla, CA 92037-1300 · Phone (800) 926-8273 · Fax (888) 539-8781

Location 26655 Alvarado RdSan Diego, CA 92120-5208 · Phone (800) 926-8273 · Fax (888) 539-8781

Location 39350 Campus Point DrLA Jolla, CA 92037-1300 · Phone (800) 926-8273 · Fax (888) 539-8781

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Mark Kowalczyk is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID7416466743

PECOS Enrollment IDI20250529003658

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

Regents Of The University Of California

Same address

Allergy & Immunology

200 W ARBOR DR
San Diego, CA 92103

Reassigned Medicare billing, California enrollment
1,051 clinicians in this Medicare group

NPI 1487772380 (800) 926-8273

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 92103 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

$140.22 typical visit price

range $62.10 – $184.71

Typical copayment $35.05 (range $15.52 – $46.17)

Most-billed visit code 99204

Established Patient

$108.42 typical visit price

range $20.62 – $151.42

Typical copayment $27.10 (range $5.15 – $37.85)

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. RAMIN MOTARJEMI M.D.

Internal Medicine (Geriatric Medicine)