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Dr. Nicholas M. Hernandez

Joint Replacement Surgery (Adult Reconstructive Orthopaedic Surgery Physician)

1550 N 115th St
Seattle, WA 98133

Who else practices at this address →

King County includes primary care (5% of residents) and dental (4% of residents) and mental health (4% of residents) shortage areas. About shortage areas

Call (206) 520-5000

  • Medicare participating

At a glance

Years since graduation
7
In the NPI registry since
2014
Medicare patients seen, 2024
237

Licensed in Washington since 2022, according to the Washington State Department of Health. We show license dates only for the states that publish them in bulk; see which states do. For other states, check the state medical board.

The NPI date is when this clinician registered for a National Provider Identifier, the billing number used on health claims. It is not a license, graduation or board-certification date. What an NPI is

Education and training

  • 2014Registered with an NPI (national billing number; not a license date)

Medicare’s Care Compare data doesn’t list this clinician’s medical school. Undergraduate school, residency, fellowship, licensing exams and board certification aren’t in public federal data. Board certification can be confirmed with the certifying board (ABMS member boards for MDs, AOA boards for DOs).

Specialties and state licenses

  • Adult Reconstructive Orthopaedic Surgery Physician primary
    WA license MD61286038 (first issued 2022; active)
  • Orthopaedic Surgery Physician
    MN license 59423 · WA license MD61286038 (first issued 2022; active)
  • Student in an Organized Health Care Education/Training Program

As reported to the NPI registry. To confirm a license is current, check the state medical board.

Map: Joint Replacement Surgery per capita by county →

Where they work

Hospitals

Medical groups

Hospitals this clinician lists with Medicare, and groups they bill Medicare through (Care Compare). Affiliation doesn’t mean they see patients at every location.

Medicare patients and services

Medicare patients, 2024
237
Services billed
424
Patients’ average age
74
Most frequent Medicare services, 2023
ServiceTimesPatients
New patient office or other outpatient visit, 45-59 minutes5454
Established patient office or other outpatient visit, 30-39 minutes4444
Established patient office or other outpatient visit, 20-29 minutes4030
Replacement of thigh bone and hip joint with prosthesis2524
Replacement of knee joint, both sides of knee2422
Established patient office or other outpatient visit, 40-54 minutes2020
Telephone medical discussion with physician, 11-20 minutes1111
Telephone medical discussion with physician, 21-30 minutes1111

Medicare fee-for-service only. CMS leaves out services billed for fewer than 11 patients. These figures describe a practice’s Medicare work; they aren’t a measure of quality.

Medicare prescriptions

Most prescribed drugs, Medicare Part D 2024
DrugPrescriptions
Amoxicillin
Other prescribers in Seattle, WA
18

Prescriptions filled under Medicare Part D, including refills. CMS leaves out drugs prescribed fewer than 11 times.

Payments from drug and device companies

In 2025, 2 companies reported 2 payments worth $375 in total to this clinician.

By type
Food and Beverage$375

From CMS Open Payments. A payment is not evidence of wrongdoing; many are for consulting, teaching or meals. Clinicians can review and dispute their records with CMS.

Who received the most in Washington →

Other Joint Replacement Surgery clinicians in Seattle

Sources

NPI registry (CMS NPPES, November 2026; record last updated June 7, 2022), Medicare Care Compare, Medicare Physician & Other Practitioners (2024), Medicare Part D Prescribers (2024) and Open Payments (2025). Information is self-reported or billed data and may be out of date; call before visiting.

NPI 1679989396. Official NPI registry record (opens in a new tab). Clinicians can correct their information in NPPES; changes appear here after our next monthly update.