Individual provider Active NPI

Amit Bhasker Ayer, M.D.

  • Neurological Surgery Physician
  • Portland, OR
National Provider Identifier
1841638293
Registry record updated Apr 28, 2026
On this page

Key facts

NPPES NPI Registry
Primary specialty
Neurological Surgery PhysicianTaxonomy code 207T00000X
License
MD214300 Issued in OR
Practice address
1040 NW 22ND Ave Ste 420
Portland, OR 97210-3062
Phone
(503) 944-6300
NPI assigned
Jun 7, 2013
Sex
Male
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on Apr 28, 2026

Registry information is reported by the provider to CMS and is not verified. About this source

Specialties & licenses 5

Specialty (taxonomy)CodeLicenseStatePrimary
Neurological Surgery Physician 207T00000X 125.063148 IL
Neurological Surgery Physician 207T00000X A166651 CA
Neurological Surgery Physician 207T00000X 125063148 IL
Neurological Surgery Physician 207T00000X DR.0066618 CO
Neurological Surgery Physician 207T00000X MD214300 OR Primary

Addresses

Primary practice location

1040 NW 22ND Ave Ste 420
Portland, OR 97210-3062

Mailing address

1040 NW 22ND Ave Ste 420
Portland, OR 97210-3062

Medicare participation

Medicare enrollment files
Medicare fee-for-service enrollment
Enrolled in CA, OR2 enrollments
Eligible to order & refer
  • Part B services: Yes
  • Medical equipment: Yes
  • Home health: Yes
  • Power mobility devices: Yes
  • Hospice: Yes
Green means eligible to order or refer.

Enrollment records 2

Enrollment IDStateProvider typePAC IDDetails
I20200603002250 CA Practitioner - Neurosurgery 9931481181 Reassigns benefits to 3 organizations
I20230403001551 OR Practitioner - Neurosurgery 9931481181 Reassigns benefits to 1 organization

Care Compare profile

Medicare Care Compare
Specialty
Neurosurgery
Education
Wake Forest University School of Medicine, 2013
Medicare assignment
Accepts the Medicare-approved amount as payment in full
Telehealth
Offers telehealth services
Group practices
Legacy Clinics LLCGroup PAC ID 0244144004, 714 clinicians

Practice addresses (Care Compare)

2800 N Vancouver Ave
Stes 130 230
Portland, OR 97227-1630
Phone (503) 413-7162

Hospital & facility affiliations

Merit-based Incentive Payment System (MIPS)

Final score
94.62 of 100Reported as apm
Quality
77.21
Promoting interoperability
99.06
Improvement activities
40

Merit-based Incentive Payment System (MIPS)

Final score
93.65 of 100Reported as group
Quality
86.8
Promoting interoperability
100
Improvement activities
40
Cost
86.36

Procedures performed for Medicare patients

ProcedureNumber of procedures
Spinal fusion1-10
Laminectomy or laminotomy (partial removal of spine bones)12

National Provider Directory

National Provider Directory
Medicare enrollment (NPD)
Enrolled
Credentials
Doctor of Medicine

State licenses

LicenseStateTypeSpecialty
A166651CAMDNeurological Surgery Physician
125.063148ILMDNeurological Surgery Physician
MD214300ORMDNeurological Surgery Physician

Practice roles

OrganizationSpecialtyStatusNew patients
County of Santa Clara Neurological Surgery CurrentSince Aug 10, 2020 Accepting new patients
County of Santa Clara CurrentSince Aug 10, 2020 Accepting new patients
County of Santa Clara Current Accepting new patients
Legacy Clinics LLC Neurological Surgery CurrentSince Mar 28, 2023 Accepting new patients
County of Santa Clara CurrentSince Aug 10, 2020 Accepting new patients
Legacy Clinics LLC CurrentSince Mar 28, 2023 Accepting new patients
County of Santa Clara CurrentSince Aug 10, 2020 Accepting new patients
Legacy Emanuel Hospital & Health Center Past Accepting new patients

Locations

7475 Camino Arroyo
Gilroy, CA 95020
Phone (408) 852-2400

1993 McKee Rd
San Jose, CA 95116
Phone (408) 254-6320

1996 Lundy Ave
San Jose, CA 95131
Phone (408) 299-5846

500 Tully Rd
San Jose, CA 95111
Phone (408) 817-1433

750 S Bascom Ave
San Jose, CA 95128
Phone (408) 885-2320

2101 Alexian Dr
San Jose, CA 95116
Phone (408) 272-6050

751 S Bascom Ave
San Jose, CA 95128
Phone (408) 885-5110

300 Pasteur Dr
Stanford, CA 94305
Phone (650) 498-5710

660 S Fair Oaks Ave
Sunnyvale, CA 94086
Phone (408) 885-7366

1919 NW Lovejoy St
Portland, OR 97209
Phone (503) 415-5600

1040 NW 22nd Ave
Ste 420
Portland, OR 97210
Phone (503) 229-7566

2800 N Vancouver Ave
Ste 130
Portland, OR 97227
Phone (503) 276-6110

1130 NW 22nd Ave
Ste 220
Portland, OR 97210
Phone (503) 413-4134

Interoperability endpoints

  • Direct secure messaging: aayer1327851@direct.lhs.org
  • Direct secure messaging: aayer165646@santaclaravalley.direct-ci.net

Organizations & group practices 8

Organizations this provider is connected to: Medicare benefit reassignments (the organization bills Medicare for this provider’s services), Care Compare group memberships, National Provider Directory roles and organizations whose NPPES authorized official is this provider.

Hospital & facility affiliations 7

Hospitals and other facilities this clinician is affiliated with according to Medicare Care Compare.

NPI Registry JSON

The complete NPPES record for this NPI in the NPI Registry API format.

{
    "created_epoch": "1370563200000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1777334400000",
    "number": "1841638293",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "1040 NW 22ND AVE STE 420",
            "city": "PORTLAND",
            "state": "OR",
            "postal_code": "972103062"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "1040 NW 22ND AVE STE 420",
            "city": "PORTLAND",
            "state": "OR",
            "postal_code": "972103062",
            "telephone_number": "503-944-6300"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "AYER",
        "first_name": "AMIT",
        "middle_name": "BHASKER",
        "credential": "M.D.",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2013-06-07",
        "last_updated": "2026-04-28",
        "certification_date": "2026-04-28",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207T00000X",
            "taxonomy_group": "",
            "desc": "Neurological Surgery",
            "state": "IL",
            "license": "125.063148",
            "primary": false
        },
        {
            "code": "207T00000X",
            "taxonomy_group": "",
            "desc": "Neurological Surgery",
            "state": "CA",
            "license": "A166651",
            "primary": false
        },
        {
            "code": "207T00000X",
            "taxonomy_group": "",
            "desc": "Neurological Surgery",
            "state": "IL",
            "license": "125063148",
            "primary": false
        },
        {
            "code": "207T00000X",
            "taxonomy_group": "",
            "desc": "Neurological Surgery",
            "state": "CO",
            "license": "DR.0066618",
            "primary": false
        },
        {
            "code": "207T00000X",
            "taxonomy_group": "",
            "desc": "Neurological Surgery",
            "state": "OR",
            "license": "MD214300",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

Other providers in Portland, OR

Sources for this page

Verify at the official NPI Registry.