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Physician Assistant

Melissa K. Nicholas, PA

Works at hospitals in Yakima, WA · Washington

Summary

Melissa K. Nicholas, PA is a physician assistant at 3911 Castlevale Rd, Yakima, WA 98902. Phone: (509) 966-7899. May accept Medicare assignment. In 2024, Melissa K. Nicholas had 614 Original Medicare patients and 2,506 services. NPI 1215197694. 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: Physician assistant
  • Address: 3911 Castlevale Rd, Yakima, WA 98902 · Directions
  • Phone: (509) 966‑7899
  • Medicare: May accept Medicare assignment
  • Hospital: Yakima Valley Memorial
  • Group practice: Yakima Valley Dermatology Inc PS
  • School: graduated 2006
  • Gender (as listed): Female

From official Medicare data

This page shows what Medicare's official clinician data says about Melissa K. Nicholas, 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 Melissa K. Nicholas accept Medicare assignment?
Medicare's clinician data says Melissa K. Nicholas may accept Medicare assignment (as of October 2, 2026). Ask the office whether they accept it for your visit.
How many Medicare patients does Melissa K. Nicholas see?
In 2024, CMS data shows 614 Original Medicare patients and 2,506 services for Melissa K. Nicholas. This counts Original Medicare only and measures volume, not quality.
What is Melissa K. Nicholas's NPI number?
1215197694. 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 Melissa K. Nicholas, 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 patients614
Services billed to Medicare2,506
Different services or procedures29
Participating Medicare providerYes
Average age of these patients76

Most frequent services

  1. Destruction of precancer skin growth, 2-14 growths (17003)910 services
  2. Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)661 services
  3. Destruction of precancer skin growth, 1 growth (17000)300 services
  4. New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more (99203)147 services
  5. Destruction of skin growth, 1-14 growths (17110)145 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 cholesterol69%
  • High blood pressure64%
  • Arthritis38%
  • Diabetes24%
  • Chronic kidney disease21%
  • Anxiety17%

Hospitals where Melissa K. Nicholas works

Medicare's Facility Affiliation Data lists Melissa K. Nicholas 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.

  • Yakima Valley MemorialYakima, WA · Acute Care Hospital · Medicare rating: 1 of 5 stars · Emergency services: not listed by Medicare · CCN 500036

Practice locations

Addresses where Melissa K. Nicholas is enrolled with Medicare (CMS data updated October 2, 2026).

Group practices

Medicare enrollment lists Melissa K. Nicholas as a member of this group (CMS data updated October 2, 2026).

  • Yakima Valley Dermatology Inc PS8 clinicians in the group

Specialties

Find other clinicians: Physician Assistant, Washington →

Other physician assistants in Yakima

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

All physician assistants in Yakima →

Other clinicians in Yakima Valley Dermatology Inc PS

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

Clinician information

CredentialPA
Graduation year2006
Gender (as listed)Female
Medicare assignmentMay accept for some services
NPI (National Provider Identifier)1215197694
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