Nicholas Markadakis, MD
NPI 1639673544 · Emergency Medicine Physician · Auburn, WA
Enrolled with Medicare as Practitioner - Emergency Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Nicholas Markadakis, MD is a Emergency Medicine Physician provider in Auburn, WA (NPI 1639673544).
Provider details
- NPI number
- 1639673544
- Entity type
- Individual
- Primary specialty
- Emergency Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- MD61224889 (WA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
8 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
3 documented practice locations
- Medicare service volume (vs. specialty peers)28% of score
470 Medicare services, 2024 (ranked within specialty)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Routine Electrocardiogram (ecg) Using at Least 12 Leads With Interpretation and Report Only93010 | 150 | $8 |
| Emergency Department Visit With High Level of Medical Decision Making99285 | 129 | $174 |
| Critical Care, First 30-74 Minutes99291 | 76 | $216 |
| Electrocardiogram (ecg) 1 to 3 Leads With Review By Physician Only93042 | 54 | $7 |
| Emergency Department Visit With Moderate Level of Medical Decision Making99284 | 27 | $121 |
| Initial Hospital Care With Moderate Level of Medical Decision Making, If Using Time, at Least 75 Minutes99223 | 20 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 1 distinct drug on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Oxycodone Hcl | 14 | 14 |
Medicare Part D only. These counts cover prescriptions paid through Medicare Part D in 2024 — they do notinclude cash-pay, commercial-insurance, Medicaid, or Part B–administered drugs, and badly undercount high cash-pay categories (e.g. GLP-1 weight-loss, testosterone, and ED medications). Any drug with 10 or fewer claims is omitted by CMS, and beneficiary counts under 11 are suppressed — so a missing drug means no Part D record, never zero. This is a factual claims summary, not an endorsement, not medical advice, and not a consumer report. Source: CMS Medicare Part D Prescribers — by Provider and Drug.
Practice location
Mailing address
Additional practice locations (2)
- 1800 W Charleston BlvdLas Vegas, NV 89102-2386Phone: (702) 383-2000
- 939 Caroline StPort Angeles, WA 98362-3997Phone: (360) 417-7000
Registry dates
- Enumerated
- 2018-03-23
- Last updated
- 2026-05-26
- Certified
- 2026-05-26
Frequently asked questions
- What is Nicholas Markadakis's NPI number?
- Nicholas Markadakis's National Provider Identifier (NPI) is 1639673544, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Nicholas Markadakis's specialty?
- Nicholas Markadakis is listed in the NPPES registry with a primary specialty of Emergency Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Nicholas Markadakis located?
- Nicholas Markadakis's practice location on file with NPPES is 202 N Division St, Auburn, WA 98001-4939.
- What is Nicholas Markadakis's phone number?
- The practice phone number listed in the NPPES registry for Nicholas Markadakis is (253) 833-7711.
- Does Nicholas Markadakis accept Medicare?
- Nicholas Markadakis is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Nicholas Markadakis's NPI active?
- Yes — Nicholas Markadakis's NPI (1639673544) is active in the NPPES registry as of the last update on 2026-05-26.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.