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Pulmonary Disease

Courtney C. Greene, MD

Works at hospitals in Everett, WA · Washington

Summary

Dr. Courtney C. Greene, MD is a pulmonologist at 3901 Hoyt Ave, Everett, WA 98201. Phone: (425) 339-5442. Accepts Medicare assignment. In 2024, Courtney C. Greene had 294 Original Medicare patients and 913 services. NPI 1306956735. Source: CMS National Downloadable File, updated October 2, 2026; CMS Facility Affiliation Data, updated October 2, 2026; CMS Medicare Physician & Other Practitioners, data year 2024.

  • Specialty: Pulmonologist (Medicare lists Pulmonary Disease)
  • Address: 3901 Hoyt Ave, Everett, WA 98201 · Directions
  • Phone: (425) 339‑5442
  • Medicare: Accepts Medicare assignment
  • Hospital: Providence Regional Medical Center Everett
  • Group practice: Optum Care Washington PLLC
  • Medical school: University Of Texas Medical School At San Antonio · graduated 2003 (23 years since medical school)
  • Gender (as listed): Female
  • Telehealth: offered

From official Medicare data

This page shows what Medicare's official clinician data says about Courtney C. Greene, joined by NPI number (data updated October 2, 2026). It is not a recommendation or a rating. Call the office or hospital to confirm before you go.

In a medical emergency, call 911.

Quick answers

Does Courtney C. Greene accept Medicare assignment?
Yes. Medicare's clinician data says Courtney C. Greene accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of October 2, 2026. Ask the office to confirm before your visit.
How many Medicare patients does Courtney C. Greene see?
In 2024, CMS data shows 294 Original Medicare patients and 913 services for Courtney C. Greene. This counts Original Medicare only and measures volume, not quality.
What is Courtney C. Greene's NPI number?
1306956735. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.

Medicare activity in 2024

Official CMS public-use data for Courtney C. Greene, data year 2024 (released May 21, 2026). It covers Original Medicare (fee-for-service) patients only, not Medicare Advantage or other insurance. It shows volume, not quality or outcomes. CMS hides any count of 10 or fewer patients.

Original Medicare patients294
Services billed to Medicare913
Different services or procedures25
Participating Medicare providerYes
Average age of these patients73

Most frequent services

  1. Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)174 services
  2. Home sleep test (hst) with type iii portable monitor, unattended; minimum of 4 channels: 2 respiratory movement/airflow, 1 ecg/heart rate and 1 oxygen saturation (G0399)64 services
  3. Test to determine lung volumes using gas dilution or washout (94727)57 services
  4. Test to examine how well the lungs exchange gases (94729)57 services
  5. New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more (99204)55 services

Chronic conditions among these patients

Share of this clinician’s Original Medicare patients with each condition, as published by CMS (it describes the patients, not the care given).

  • High cholesterol68%
  • High blood pressure67%
  • Arthritis41%
  • COPD32%
  • Diabetes25%
  • Ischemic heart disease23%

Hospitals where Courtney C. Greene works

Medicare's Facility Affiliation Data lists Courtney C. Greene at these hospitals (updated October 2, 2026). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians. Star rating and emergency services: Hospital General Information (CMS), data updated October 26, 2026.

Practice locations

Addresses where Courtney C. Greene is enrolled with Medicare (CMS data updated October 2, 2026).

Group practices

Medicare enrollment lists Courtney C. Greene as a member of this group (CMS data updated October 2, 2026).

  • Optum Care Washington PLLC683 clinicians in the group

Specialties

Find other Pulmonary Disease doctors in Washington →

Other pulmonologists in Everett

Clinicians with the same Medicare primary specialty in Everett, WA — not a recommendation.

All pulmonologists in Everett →

Other clinicians in Optum Care Washington PLLC

Medicare enrollment lists these clinicians in the same group practice — not a recommendation.

Clinician information

CredentialMD
Medical schoolUniversity Of Texas Medical School At San Antonio
Graduation year2003 (23 years since medical school)
Gender (as listed)Female
Medicare assignmentAccepts (Medicare-approved amount as full payment)
TelehealthOffers telehealth services
NPI (National Provider Identifier)1306956735
CorrectionsReport an error or suggest an update →

Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.

Sources

  1. Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated October 2, 2026, retrieved October 29, 2026
  2. Hospital General Information — CMS, data updated October 26, 2026, retrieved November 13, 2026
  3. National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
  4. Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
  5. NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
  6. Medicare Care Compare — official Medicare tool to look up clinicians