2026 NPPES data Adult Medicine Physician NPI 1255798260 MD
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KATERYNA MYKHALCHENKO, MD

Adult Medicine Physician in EVERETT, Washington. CMS National Plan and Provider Enumeration System profile including specialty classification, practice address, and Medicare prescribing data when reported.

Federal data — no proprietary rating. PlainDoctor publishes the actual CMS NPPES and Medicare records — NPI registration, specialty, practice location, and prescribing data — without a composite score or editorial opinion on top. Every field traces to a federal source.
Prescribing volume
446
Medicare Part D claims · 313 beneficiaries · Adult Medicine Physician avg: 3K
Generic prescribing
92%
generic claims · 8% brand-name · higher generic rates reduce patient out-of-pocket costs
What the federal data reveals: KATERYNA MYKHALCHENKO, MD is a Adult Medicine Physician ([object Object]) practicing in EVERETT, Washington with a Medicare Part D prescribing footprint of 446 claims across 313 beneficiaries — 8% brand-name prescribing .

What stands out: KATERYNA MYKHALCHENKO, MD filed 446 Medicare Part D claims in 2023 across EVERETT, Washington. Every figure on this page comes straight from federal CMS records, with no proprietary rating applied.

Board certification likely (heuristic — not verified)

KATERYNA MYKHALCHENKO, MD practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + 1 hospital affiliation — signals consistent with board-certified status. For verified board certification, see CertificationMatters.org (the official ABMS public lookup).

KATERYNA MYKHALCHENKO, MD at a glance

Quality data not reported

NPI registry status

Active

Issued 01/21/2016

NPI 1255798260

Primary specialty

Adult Medicine Physician

Niche

2,481 US NPIs in this specialty

Medicare Part D claims

446 84% vs specialty avg

2023 prescription claims

Specialty avg: 2,807

Specialty distribution in Washington

How Adult Medicine Physician compares to other specialties among Washington providers

Washington providers

Adult Medicine Physician share within Washington

1. Adult Medicine Physician42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Adult Medicine Physician share within Washington

Specialty board-certification context

Estimated specialty board-certified rate — Adult Medicine Physician (ABMS / AOA reference)

Quality data not reported
Est. board-certified rate
78%
Adult Medicine Physician ABMS/AOA estimate

Est. board-certified rate (Adult Medicine Physician) — ABMS / AOA estimate

0%100%78%
Est. board-certified rate (Adult Medicine Physician) — ABMS / AOA estimate

The Merit-based Incentive Payment System (MIPS) scores providers 0–100 across four performance categories: Quality, Cost, Promoting Interoperability, and Improvement Activities, weighted under 42 CFR §414.1380. Reporting is voluntary for many small practices, so absence of a MIPS score is not a quality signal.

Board certification through an ABMS or AOA member board signals voluntary post-licensure examination plus continuous Maintenance of Certification cycles. Verify any individual provider's status through certificationmatters.org (ABMS) or osteopathic.org (AOA).

KATERYNA MYKHALCHENKO, MD is a Adult Medicine Physician provider practicing in EVERETT, Washington, according to the CMS National Plan and Provider Enumeration System (NPPES). Credentials: MD. NPI: 1255798260. This profile includes practice location, specialty classification, and organizational affiliations from the CMS provider registry. Provider information is self-reported to CMS and updated monthly.

KATERYNA MYKHALCHENKO, MD appears in the CMS NPPES registry as a Adult Medicine Physician provider holding MD credentials at 3927 RUCKER AVE, EVERETT, WA, 98201, with a listed phone of (425) 339-5422. NPI 1255798260 was issued on 01/21/2016. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what MYKHALCHENKO most recently submitted to CMS rather than a vetted directory listing, which is why patients should always confirm the practice is still at this location before scheduling.

Medicare Part D records for calendar year 2023 show 446 prescription claims written by this provider, covering 313 Medicare beneficiaries and totaling roughly $15K in drug spend, split 8% brand-name and 92% generic by claim count. These figures capture only Medicare Part D — commercial insurance, Medicaid, and cash-pay prescriptions are not included, and any drug-beneficiary cell under 11 is suppressed by CMS for patient privacy.

Adult Medicine Physician is a narrow specialty nationwide, with 2,481 enrolled providers across 52 states and an average of 2,807 Part D claims per prescriber, so the context for interpreting these metrics differs meaningfully from a primary-care baseline. Important: PlainDoctor is a directory of publicly available government data, not medical advice, a malpractice database, or a quality rating. Inclusion here does not imply a recommendation, and absence of complaints or sanctions on this page does not mean none exist — always verify credentials through the NPPES NPI Registry, your state medical board, and the ABMS or AOA before making healthcare decisions.

Practice Address

3927 RUCKER AVE
EVERETT, WA 98201

Provider Details

NPI 1255798260
Specialty Adult Medicine Physician
Credentials MD
Gender Female
NPI Issued 01/21/2016

Hospital and facility affiliations

Facilities where KATERYNA MYKHALCHENKO, MD bills Medicare from. Star ratings (1-5) are CMS Hospital Compare's "Hospital overall rating" — a composite of mortality, readmission, patient experience, safety, timely care, and efficient use of medical imaging measures. Source: CMS Care Compare.

OPTUM CARE WASHINGTON PLLC
EVERETT, WA

Affiliations sourced from CMS Doctors and Clinicians National Downloadable File; hospital ratings from CMS Hospital General Information dataset (cross-referenced by facility name + state).

License & disciplinary context — Washington WMC 2023 annual report

Aggregate state board data only — NOT a determination of any individual provider's status. The figures below describe statewide disciplinary activity across all ~34K Washington medical licensees in 2023 — they are NOT specific to KATERYNA MYKHALCHENKO, MD. To verify KATERYNA MYKHALCHENKO, MD's current license status, search the WMC public license lookup directly, or check the Federation of State Medical Boards (FSMB) verification service.

88
Total board actions, Washington 2023
Across 85 cases
2.59
Actions per 1,000 licensees
Washington statewide rate
probation
Most common action type
31 cases

WMC publishes annual disciplinary statistics as part of public-record reporting under each state's Administrative Procedure Act. See the full breakdown by action type and year on the Washington disciplinary trends page. Cross-checked against FSMB U.S. Medical Regulatory Trends.

Brand vs generic prescribing mix · Generic-heavy

KATERYNA MYKHALCHENKO, MD — brand share 8.0%
Specialty average (est.)

8% brand-name claims vs 92% generic, on 446 2023 Medicare Part D claims.

The federal Medicare Part D Generic Dispensing Rate national benchmark sits near 90% generic / 10% brand for primary-care prescribers, per CMS Office of the Actuary 2024 estimates. Higher brand share is common in specialty prescribing where generic equivalents are not available.

Medicare Part D Prescribing Data

CMS Medicare Part D prescriber-level data for calendar year 2023.

446
Total Claims
$15K
Total Drug Cost
313
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
475
Total Day Supply
6,528
Brand vs Generic
8% brand / 92% generic
Brand Drug Cost
$10K
Generic Drug Cost
$5K
Antibiotic Claims
159

Patient Demographics

Average Patient Age
72.4 years
Avg HCC Risk Score
1.45
Gender Split
56% female / 44% male
Age Distribution
<65: 27, 65-74: 154, 75-84: 106, 85+: 26

Top Prescribed Drugs (Medicare Part D)

Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.

Drug Claims
Cephalexin
43
Amoxicillin-Clavulanate Potass
Amoxicillin/Potassium Clav
40
Prednisone
40
Mupirocin
24
Doxycycline Hyclate
21
Albuterol Sulfate Hfa
Albuterol Sulfate
19
Paxlovid (Eua)
Nirmatrelvir/Ritonavir
18
Azithromycin
17
Tizanidine Hcl
16
Nitrofurantoin Mono-Macro
Nitrofurantoin Monohyd/M-Cryst
13

* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.

Adult Medicine Physician Overview

How KATERYNA MYKHALCHENKO, MD fits within the Adult Medicine Physician landscape nationally.

2,481
Adult Medicine Physician Providers in US
52
States with Adult Medicine Physician
2,807
Avg Claims per Provider

KATERYNA MYKHALCHENKO, MD's 446 claims are below the specialty average of 2,807.

Nearby Adult Medicine Physician Providers in Washington

Other clinicians with the same primary specialty enrolled in Washington, drawn from the same CMS NPPES roster as MYKHALCHENKO.

Compare Adult Medicine Physician nationally: see state-by-state distribution →

Frequently Asked Questions

What is KATERYNA MYKHALCHENKO, MD's specialty?
KATERYNA MYKHALCHENKO, MD specializes in Adult Medicine Physician and practices in EVERETT, Washington. Credentials: MD.
How much does KATERYNA MYKHALCHENKO, MD prescribe under Medicare Part D?
In 2023, KATERYNA MYKHALCHENKO, MD wrote 446 Medicare Part D claims totaling $15K in drug costs for 313 beneficiaries.
Where is KATERYNA MYKHALCHENKO, MD located?
KATERYNA MYKHALCHENKO, MD is located at 3927 RUCKER AVE, EVERETT, WA, 98201. Phone: (425) 339-5422.
What is KATERYNA MYKHALCHENKO, MD's NPI number?
KATERYNA MYKHALCHENKO, MD's National Provider Identifier (NPI) is 1255798260, issued on 01/21/2016.
Does KATERYNA MYKHALCHENKO, MD prescribe more brand-name or generic drugs?
KATERYNA MYKHALCHENKO, MD's prescribing is 8% brand-name and 92% generic drugs by claim count, with $10K in brand drug costs.
How many Adult Medicine Physician providers are there in the US?
There are 2,481 Adult Medicine Physician providers across 52 states in the US. The average Adult Medicine Physician provider writes 2,807 Medicare Part D claims per year.
What drugs does KATERYNA MYKHALCHENKO, MD prescribe most often?
Based on 2023 Medicare Part D data, KATERYNA MYKHALCHENKO, MD's most frequently prescribed drugs include Cephalexin, Amoxicillin-Clavulanate Potass, Prednisone. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does KATERYNA MYKHALCHENKO, MD accept Medicare?
KATERYNA MYKHALCHENKO, MD appears in CMS Medicare data with 446 Part D claims and 313 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify KATERYNA MYKHALCHENKO, MD's credentials?
KATERYNA MYKHALCHENKO, MD's NPI is 1255798260 with credentials MD. You can verify this through the NPPES NPI Registry, check state medical board records, and confirm board certification through the ABMS or AOA.

Data Sources

Provider Directory
CMS National Plan and Provider Enumeration System (NPPES), download.cms.gov/nppes, updated monthly. Contains NPI, specialty, credentials, and practice location.
Specialty Classification
NUCC Health Care Provider Taxonomy (nucc.org), the industry standard for classifying provider specialties in Medicare and Medicaid billing.
Prescribing Data
CMS Medicare Part D Prescriber Public Use File (2023). Includes claims, drug costs, beneficiaries, and opioid prescribing rates.
Limitations
Provider data is self-reported to CMS. Prescribing data reflects Medicare Part D only and does not include commercial insurance, Medicaid, or cash prescriptions. Claims below 11 beneficiaries are suppressed by CMS for privacy.

See our complete data methodology for details on how we collect and process government data.

Data as of April 2026 (NPPES) / 2023 (Medicare Part D). Source: Centers for Medicare & Medicaid Services (CMS).

Disclaimer: Data from CMS NPPES and Medicare Part D. PlainDoctor does not rate or rank providers. Provider information is self-reported and may not be current. Always verify information directly with the provider. About · Methodology