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DR. AMER J MIRZA M.D.
NPI 1548296593
Orthopaedic Surgery in Lake Oswego, OR

Active since June 23, 2006PECOS EnrolledAccepts Medicare Assignment
93.57/100
CMS Quality Rating
4250 MERCANTILE DR, LAKE OSWEGO, OR 97035(503) 850-9940(503) 850-6709 Get Directions Write a Review

NPPES record last updated: August 10, 2026. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Aug 10, 2026, Apr 5, 2024, Jan 21, 2021 (3 updates tracked since 2021).

About Dr. Amer J Mirza M.d. NPPES

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

DR. AMER J MIRZA M.D. (NPI 1548296593) is an individual orthopaedic surgery provider in Lake Oswego, Oregon, licensed in Oregon (MD27789) and active in the NPI registry since June 2006. He is enrolled in Medicare PECOS, is affiliated with Legacy Emanuel Medical Center, and maintains a secondary practice location in Lake Oswego.

NPPES Registry Identity

NPI1548296593
Entity TypeIndividualMale
Primary Taxonomy207X00000X
Provider Legal NameDR. AMER J MIRZACredential: M.D.
Location Address4250 MERCANTILE DRLake Oswego, OR 97035-2557
Mailing AddressPo Box 42928Belfast, ME 04915-1281 · (503) 850-9940 · Fax (503) 850-6709
Phone(503) 850-9940
Fax(503) 850-6709
Sole ProprietorNo
Medical School CMSOregon Health Sciences University School Of MedicineGraduated 2001
Enumeration DateJune 23, 2006
Last NPPES UpdateAugust 10, 20263 updates tracked since enumeration
NPPES CertifiedAugust 10, 2026
✔ NPI 1548296593 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyOrthopaedic SurgeryAllopathic & Osteopathic Physicians
Taxonomy Code207X00000X
License✔ Licensed in OR · MD27789
Definition
An orthopaedic surgeon is trained in the preservation, investigation and restoration of the form and function of the extremities, spine and associated structures by medical, surgical and physical means. An orthopaedic surgeon is involved with the care of patients whose musculoskeletal problems include congenital deformities, trauma, infections, tumors, metabolic disturbances of the musculoskeletal system, deformities, injuries and degenerative diseases of the spine, hands, feet, knee, hip, shoulder and elbow in children and adults. An orthopaedic surgeon is also concerned with primary and secondary muscular problems and the effects of central or peripheral nervous system lesions of the musculoskeletal system.
Also ListedSurgery · Trauma SurgeryTaxonomy 2086S0127X · License MD27789 (OR)
4250 MERCANTILE DR, Lake Oswego, OR 97035
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Secondary Practice Location 1

Location 14250 Mercantile DrLake Oswego, OR 97035-2557 · Phone (503) 850-9950 · Fax (866) 252-2247

Other Identifiers 1

Medicaid500672508OR

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Ambetter Health, BridgeSpan Health Company, Moda Health Plan, Inc. and more.Insurance ›

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

Dr. Amer J Mirza 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 ID1951306448
PECOS Enrollment IDI20071001000024
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 Amer Mirza reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Summit Orthopaedics, LLP
Same address
Orthopaedic Surgery
4250 MERCANTILE DR STE B
Lake Oswego, OR 97035
  • Reassigned Medicare billing, Oregon enrollment
  • 8 clinicians in this Medicare group
NPI 1427200021 (503) 850-9940

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 9

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.

Extensive or complicated repair of surface wound reopening 13160
This procedure involves the repair of a surface wound that has reopened. It may be extensive or complex due to the wound's size, depth, or location. The process includes cleaning the wound, removing any damaged tissue, and stitching it closed to promote healing.
33 services28 patients
Incision of hip joint for exploration, fluid drainage, or removal of foreign body 27033
This procedure involves making a small cut in the hip joint to investigate, drain excess fluid, or remove a foreign object. It's done under anesthesia, ensuring you don't feel pain. It helps in reducing discomfort, improving mobility, and preventing further complications.
20 services16 patients
Removal of deep implant from bone 20680
This procedure involves the careful extraction of an implant deeply embedded in a bone. A specialist makes a small incision, then utilizes precise instruments to reach and safely remove the implant. The area is then closed and monitored for healing.
17 services14 patients
Revision of thigh bone and hip joint prosthesis 27134
A revision of thigh bone and hip joint prosthesis is a surgery to replace an old or malfunctioning hip implant. It involves removing the previous implant, cleaning the area, and inserting a new prosthesis. This procedure aims to restore mobility and alleviate pain.
16 services13 patients
X-ray of hip, 2-3 views 73502
An X-ray of the hip with 2-3 views is a non-invasive imaging test. It uses a small amount of radiation to produce pictures of the hip joint. These images help in diagnosing conditions like fractures, arthritis, or other abnormalities. The process is quick and painless.
16 services15 patients
Treatment of broken middle of thigh bone with placement of stabilizing device 27507
This procedure involves fixing a broken thigh bone (femur). A stabilizing device, like a metal rod, is inserted into the bone. It helps align the bone correctly for healing. You may need anesthesia and the recovery period varies based on the severity of the break.
14 services14 patients

Hospital Affiliations CMS Care Compare 3

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

Legacy Emanuel Medical Center

Acute Care Hospitals · Portland, OR
3/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number380007
Location2801 N Gantenbein AvenuePortland, OR 97227 · Multnomah County
Emergency services Birthing friendly

Legacy Meridian Park Medical Center

Acute Care Hospitals · Tualatin, OR
2/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number380089
Location19300 SW 65th AvenueTualatin, OR 97062 · Washington County
Emergency services Birthing friendly

Adventist Health Tillamook

Critical Access Hospitals · Tillamook, OR
3/5 CMS rating
OwnershipVoluntary non-profit - Church
CMS Certification Number381317
Location1000 Third StreetTillamook, OR 97141 · Tillamook County
Emergency services

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 97035 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
$90.51 typical visit price
range $58.99 – $176.88
Typical copayment $22.62 (range $14.74 – $44.22)
Most-billed visit code 99203
Established Patient
$73.28 typical visit price
range $19.32 – $144.79
Typical copayment $18.32 (range $4.83 – $36.19)
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.

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.

93.57/100
MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program
Scored as part of a group practice
Quality85.33
Promoting Interoperability100
Improvement Activities40

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.

STEPHEN J WALLACE MD PC
Orthopaedic Surgery (Orthopaedic Trauma)
4250 MERCANTILE DR
LAKE OSWEGO, OR 97035
Clackamas County (503) 850-9940
STEPHEN J WALLACE MD
Orthopaedic Surgery (Orthopaedic Trauma)
4250 MERCANTILE DR
LAKE OSWEGO, OR 97035
Clackamas County (503) 850-9940
MRS. KENDALL AMANDA JOHNSON PA-C
Physician Assistant (Surgical)
4250 MERCANTILE DR
LAKE OSWEGO, OR 97035
Clackamas County (503) 850-9940

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 Amer Mirza's NPI number?

The NPI number for Amer Mirza is 1548296593. It was assigned to this individual provider in the NPPES registry on June 23, 2006.

Where is Amer Mirza located?

Amer Mirza practices at 4250 Mercantile Dr, Lake Oswego, OR 97035. The listed phone number is (503) 850-9940.

What is Amer Mirza's specialty?

The primary specialty registered for this NPI is Orthopaedic Surgery with taxonomy code 207X00000X.

Is Amer Mirza enrolled in Medicare?

Yes. Amer Mirza 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 organization bills Medicare for Amer Mirza's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Amer Mirza reassigns Medicare benefits to Summit Orthopaedics, LLP (Lake Oswego, OR). 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 Amer Mirza's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Amer Mirza accept?

Health plans from Ambetter Health, BridgeSpan Health Company, Moda Health Plan, Inc., PacificSource Health Plans and Providence Health Plan and 1 other insurer list Amer Mirza as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

Is Amer Mirza affiliated with any hospitals?

According to CMS data, Amer Mirza is affiliated with Legacy Emanuel Medical Center, Legacy Meridian Park Medical Center and Adventist Health Tillamook.

When was this NPI record last updated?

The NPPES record for Amer Mirza was last updated on August 10, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 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.