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MATTHEW S KOZLOFF M.D.
NPI 1801933288
Surgery in San Marcos, CA

Active since February 01, 2007PECOS EnrolledAccepts Medicare Assignment
838 NORDAHL ROAD, SUITE 270, SAN MARCOS, CA 92069(760) 489-5955(760) 489-7150 Get Directions Write a Review

NPPES record last updated: December 7, 2017. Verified against the NPPES registry weekly; last sync: November 01, 2026.

About Matthew S Kozloff M.d. NPPES

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

MATTHEW S KOZLOFF M.D. (NPI 1801933288) is an individual surgery provider in San Marcos, California, licensed in California (C55616) and active in the NPI registry since February 2007. He is enrolled in Medicare PECOS and is a graduate of Other (2011).

NPPES Registry Identity

NPI1801933288
Entity TypeIndividualMale
Primary Taxonomy208600000X
Provider Legal NameMATTHEW S KOZLOFFCredential: M.D.
Location Address838 NORDAHL ROAD, SUITE 270San Marcos, CA 92069-3596
Mailing Address2067 Wineridge Place, Suite AEscondido, CA 92029-1952 · (760) 489-5955 · Fax (760) 489-7150
Phone(760) 489-5955
Fax(760) 489-7150
Sole ProprietorNo
Medical School CMSOtherGraduated 2011
Enumeration DateFebruary 1, 2007
Last NPPES UpdateDecember 7, 2017
✔ NPI 1801933288 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 3

★ Primary SpecialtySurgeryAllopathic & Osteopathic Physicians
Taxonomy Code208600000X
Licenses✔ Licensed in CA · C55616✔ Licensed in KY · 40482✔ Licensed in FL · ME108087
Definition
A general surgeon has expertise related to the diagnosis - preoperative, operative and postoperative management - and management of complications of surgical conditions in the following areas: alimentary tract; abdomen; breast, skin and soft tissue; endocrine system; head and neck surgery; pediatric surgery; surgical critical care; surgical oncology; trauma and burns; and vascular surgery. General surgeons increasingly provide care through the use of minimally invasive and endoscopic techniques. Many general surgeons also possess expertise in transplantation surgery, plastic surgery and cardiothoracic surgery.
Also ListedSurgery · Surgical Critical CareTaxonomy 2086S0102X · License 40482 (KY)
Also ListedSurgery · Trauma SurgeryTaxonomy 2086S0127X · License 40482 (KY), MD12565 (RI)
838 NORDAHL ROAD, San Marcos, CA 92069
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Other Identifiers 3

Medicaid200869360IN
Other50016289KY · Passport
Medicaid7100005600KY

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

Matthew S Kozloff M.d. 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 ID7416058250
PECOS Enrollment IDI20130228000279
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 Reassignments

2

Medicare enrollment records show Matthew Kozloff reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

North County Trauma Associates, Inc. A Medical Group
2.6 mi
Surgery
215 SOUTH HICKORY AVENUE, SUITE 112
Escondido, CA 92025
  • Reassigned Medicare billing, California enrollment
  • 12 clinicians in this Medicare group
NPI 1467563791 (760) 489-5955
Oc Trauma Inc
43 mi
Trauma Surgery
26732 CROWN VALLEY PKWY STE 440
Mission Viejo, CA 92691
  • Reassigned Medicare billing, California enrollment
  • 28 clinicians in this Medicare group
NPI 1720516628 (949) 364-1007

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

Areas of Expertise CMS Part B claims 4

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Subsequent hospital care with straightforward or low level of medical decision making, per day, if using time, at least 25 minutes 99231
Follow-up hospital inpatient care is a daily service where a healthcare professional checks on your health progress during your hospital stay. Each session typically lasts 15 minutes, involving updates on your condition and adjustments to your treatment plan, if necessary.
68 services33 patients
Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes 99222
Initial hospital inpatient care is a service where a healthcare provider spends about 50 minutes per day overseeing your care while you're admitted in the hospital. This includes reviewing your health status, planning your treatment, and ensuring your safety and comfort.
42 services42 patients
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes 99232
Follow-up hospital inpatient care involves daily check-ups while you're admitted in the hospital. Typically, a healthcare provider spends about 25 minutes each day reviewing your condition, adjusting treatment if needed, and answering any questions you might have.
42 services24 patients
Critical care, first 30-74 minutes 99291
Critical care involves immediate and constant attention by a team of specially-trained health professionals. It's for patients with life-threatening conditions, requiring first 30-74 minutes of intense monitoring and treatment.
33 services21 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 92069 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
$94.87 typical visit price
range $62.10 – $184.71
Typical copayment $23.71 (range $15.52 – $46.17)
Most-billed visit code 99203
Established Patient
$76.87 typical visit price
range $20.62 – $151.42
Typical copayment $19.21 (range $5.15 – $37.85)
Most-billed visit code 99213
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

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 Matthew Kozloff's NPI number?

The NPI number for Matthew Kozloff is 1801933288. It was assigned to this individual provider in the NPPES registry on February 1, 2007.

Where is Matthew Kozloff located?

Matthew Kozloff practices at 838 Nordahl Road Suite 270, San Marcos, CA 92069. The listed phone number is (760) 489-5955.

What is Matthew Kozloff's specialty?

The primary specialty registered for this NPI is Surgery with taxonomy code 208600000X.

Is Matthew Kozloff enrolled in Medicare?

Yes. Matthew Kozloff is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

Which organizations bill Medicare for Matthew Kozloff's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Matthew Kozloff reassigns Medicare benefits to 2 organizations: North County Trauma Associates, Inc. A Medical Group (Escondido, CA) and Oc Trauma Inc (Mission Viejo, CA). Each 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 Matthew Kozloff'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 Matthew Kozloff was last updated on December 7, 2017. 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.