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PATRICK OSAK DO
NPI 1154827814
Emergency Medicine in Loma Linda, CA

Active since April 02, 2018PECOS Enrolled
85.18/100
CMS Quality Rating
11234 ANDERSON ST # A890, LOMA LINDA, CA 92354(909) 558-4000 Get Directions Write a Review

NPPES record last updated: August 31, 2021. Verified against the NPPES registry weekly; last sync: October 25, 2026.

About Patrick Osak Do NPPES

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

PATRICK OSAK DO (NPI 1154827814) is an individual emergency medicine provider in Loma Linda, California, licensed in California (20A18759) and active in the NPI registry since April 2018. He is enrolled in Medicare PECOS and maintains a secondary practice location in Buffalo.

NPPES Registry Identity

NPI1154827814
Entity TypeIndividualMale
Primary Taxonomy207P00000X
Provider Legal NamePATRICK OSAKCredential: DO
Location Address11234 ANDERSON ST # A890Loma Linda, CA 92354-2804
Mailing Address11234 Anderson St # A890Loma Linda, CA 92354-2804
Phone(909) 558-4000
Sole ProprietorNo
Enumeration DateApril 2, 2018
Last NPPES UpdateAugust 31, 2021
NPPES CertifiedAugust 31, 2021
✔ NPI 1154827814 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyEmergency MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207P00000X
License✔ Licensed in CA · 20A18759
Definition
An emergency physician focuses on the immediate decision making and action necessary to prevent death or any further disability both in the pre-hospital setting by directing emergency medical technicians and in the emergency department. The emergency physician provides immediate recognition, evaluation, care, stabilization and disposition of a generally diversified population of adult and pediatric patients in response to acute illness and injury.
Also ListedStudent in an Organized Health Care Education/Training ProgramTaxonomy 390200000X
11234 ANDERSON ST # A890, Loma Linda, CA 92354
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Secondary Practice Location 1

Location 1100 High StBuffalo, NY 14203-1126 · Phone (716) 859-1993

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Patrick Osak Do 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 Reassignments

3

Medicare enrollment records show Patrick Osak reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Faculty Physicians And Surgeons Of Llusm
Same address
Pediatrics
11234 ANDERSON ST
Loma Linda, CA 92350
  • Reassigned Medicare billing, California enrollment
  • 2,584 clinicians in this Medicare group
NPI 1477503407 (909) 558-4000
Mission Viejo Emergency Medical Associates
41 mi
Emergency Medicine
27700 MEDICAL CENTER RD
Mission Viejo, CA 92691
  • Reassigned Medicare billing, California enrollment
  • 86 clinicians in this Medicare group
NPI 1073542916 (844) 474-4019
Mission Viejo Emergency Medical Associates, Inc.
47 mi
Emergency Medicine
31872 COAST HWY
Laguna Beach, CA 92651
  • Reassigned Medicare billing, California enrollment
  • 110 clinicians in this Medicare group
NPI 1134355597 (844) 474-4019

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.

Emergency department visit with high level of medical decision making 99285
An emergency department visit for severe conditions is when you urgently seek medical help due to serious health issues. These could be severe injuries, breathing problems, unbearable pain, or sudden severe illness. Doctors and nurses will provide immediate care to stabilize your condition.
279 services275 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.
229 services223 patients
Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only 93010
A routine electrocardiogram (ECG) with 12 leads is a simple, non-invasive test that records the electrical activity of your heart. It helps in identifying heart conditions by detecting irregularities in your heart rhythms. The results are interpreted and a report is provided.
212 services197 patients
Emergency department visit with moderate level of medical decision making 99284
An emergency department visit for a high-severity issue means you're experiencing a serious health problem that needs immediate attention. This could be a severe injury, serious illness, or life-threatening condition. Medical professionals will provide urgent care to stabilize your condition.
30 services30 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 92354 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
$91.88 typical visit price
range $59.60 – $179.42
Typical copayment $22.97 (range $14.90 – $44.85)
Most-billed visit code 99203
Established Patient
$104.64 typical visit price
range $19.37 – $146.42
Typical copayment $26.16 (range $4.84 – $36.60)
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.

Medicare Quality Performance CMS QPP · MIPS

Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.

85.18/100
MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program
Scored as part of a group practice
Quality71.81
Promoting Interoperability82
Improvement Activities40
Cost64.54

Other Providers at the Same Location NPPES 2

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

DANIEL JONATHAN ROSSIE
Emergency Medicine
11234 ANDERSON ST # A890
LOMA LINDA, CA 92354
San Bernardino County (909) 558-4085
NANCY NGO
Emergency Medicine
11234 ANDERSON ST # A890
LOMA LINDA, CA 92354
San Bernardino County (909) 558-4444

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 Patrick Osak's NPI number?

The NPI number for Patrick Osak is 1154827814. It was assigned to this individual provider in the NPPES registry on April 2, 2018.

Where is Patrick Osak located?

Patrick Osak practices at 11234 Anderson St # A890, Loma Linda, CA 92354. The listed phone number is (909) 558-4000.

What is Patrick Osak's specialty?

The primary specialty registered for this NPI is Emergency Medicine with taxonomy code 207P00000X.

Is Patrick Osak enrolled in Medicare?

Yes. Patrick Osak is registered in the Medicare PECOS enrollment system.

Which organizations bill Medicare for Patrick Osak's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Patrick Osak reassigns Medicare benefits to 3 organizations: Faculty Physicians And Surgeons Of Llusm (Loma Linda, CA), Mission Viejo Emergency Medical Associates (Mission Viejo, CA) and Mission Viejo Emergency Medical Associates, Inc. (Laguna Beach, 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 Patrick Osak'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 Patrick Osak was last updated on August 31, 2021. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 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.