2026 NPPES data Internal Medicine Physician NPI 1790866424 MD
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MEGAN ELLINGSEN, MD

Internal Medicine Physician in BELLINGHAM, 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
511
Medicare Part D claims · 136 beneficiaries · Internal Medicine Physician avg: 3K

What the federal data shows

MEGAN ELLINGSEN, MD filed 511 Medicare Part D claims in 2023 as a Internal Medicine Physician in BELLINGHAM, Washington.

511
Part D claims, 2023

Every figure on this page comes straight from federal CMS records (NPPES, Medicare Part D, MIPS, Open Payments) — no proprietary rating or editorial opinion is applied.

MEGAN ELLINGSEN, MD's Medicare Part D volume vs every U.S. prescriber

Total Medicare Part D claims, 2023 — across all CMS prescribers nationally

511 Top 34% higher than 66% of 1,370,886 prescribers

0–200: 670,926 prescribers (49%). Below this entry. 200–400: 182,923 prescribers (13%). Below this entry. 400–600: 90,619 prescribers (7%). This entry sits in this band. 600–800: 56,224 prescribers (4%). Above this entry. 800–1,000: 40,919 prescribers (3%). Above this entry. 1,000–1,200: 31,827 prescribers (2%). Above this entry. 1,200–1,400: 26,224 prescribers (2%). Above this entry. 1,400–1,600: 21,710 prescribers (2%). Above this entry. 1,600–1,800: 19,072 prescribers (1%). Above this entry. 1,800–2,000: 16,451 prescribers (1%). Above this entry. 2,000–2,200: 213,991 prescribers (16%). Above this entry. This provider 0 2K+ every Part D prescriber (claims/yr), bucketed by value

Each bar is a band; taller bars hold more prescribers. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count, share, and where it sits relative to this entry.

Source CMS Medicare Part D Prescriber Public Use File · 2023

Board-eligible specialty (heuristic — not verified)

MEGAN ELLINGSEN, MD practices in an ABMS-board-eligible specialty but we don't have enough CMS-participation signals to confirm active board-certified status. Consult CertificationMatters.org (the official ABMS public lookup).

What does the federal data show about MEGAN ELLINGSEN, MD?

Quality data not reported

NPI registry status

Active

Issued 10/18/2006

NPI 1790866424

Primary specialty

Internal Medicine Physician

High-volume

172,858 US NPIs in this specialty

Medicare Part D claims

511 81% vs specialty avg

2023 prescription claims

Specialty avg: 2,716

Specialty distribution in Washington

How Internal Medicine Physician compares to other specialties among Washington providers

Washington providers

Internal Medicine Physician share within Washington

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

Specialty board-certification context

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

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

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

0%100%78%
Est. board-certified rate (Internal 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).

MEGAN ELLINGSEN, MD appears in the CMS NPPES registry as a Internal Medicine Physician provider holding MD credentials at 2800 DOUGLAS AVE, BELLINGHAM, WA, 98225, with a listed phone of (360) 733-5877. NPI 1790866424 was issued on 10/18/2006. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what ELLINGSEN 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 511 prescription claims written by this provider, covering 136 Medicare beneficiaries and totaling roughly $26K in drug spend. 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.

Internal Medicine Physician is a high-volume specialty nationwide, with 172,858 enrolled providers across 56 states and an average of 2,716 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

2800 DOUGLAS AVE
BELLINGHAM, WA 98225

Provider Details

NPI 1790866424
Specialty Internal Medicine Physician
Credentials MD
Gender Female
NPI Issued 10/18/2006

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 MEGAN ELLINGSEN, MD. To verify MEGAN ELLINGSEN, 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.

Medicare Part D Prescribing Data

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

511
Total Claims
$26K
Total Drug Cost
136
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
544
Total Day Supply
12,034
Generic Drug Cost
$9K

Patient Demographics

Average Patient Age
81.8 years
Avg HCC Risk Score
2.51
Gender Split
65% female / 35% male

Top Prescribed Drugs (Medicare Part D)

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

What MEGAN ELLINGSEN, MD prescribes most

Top Medicare Part D drugs by claim count, 2023

claims
Source CMS Medicare Part D Prescriber Public Use File As of 2023
Drug Claims
Levothyroxine Sodium
48
Metoprolol Succinate
29
Carvedilol
24
Lamotrigine
23
Lisinopril
22
Latanoprost
21
Losartan Potassium
17
Tamsulosin Hcl
17
Amlodipine Besylate
16
Pantoprazole Sodium
16

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

Internal Medicine Physician Overview

How MEGAN ELLINGSEN, MD fits within the Internal Medicine Physician landscape nationally.

172,858
Internal Medicine Physician Providers in US
56
States with Internal Medicine Physician
2,716
Avg Claims per Provider

MEGAN ELLINGSEN, MD's 511 claims are below the specialty average of 2,716.

Nearby Internal Medicine Physician Providers in Washington

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

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

Frequently Asked Questions

What is MEGAN ELLINGSEN, MD's specialty?
MEGAN ELLINGSEN, MD specializes in Internal Medicine Physician and practices in BELLINGHAM, Washington. Credentials: MD.
How much does MEGAN ELLINGSEN, MD prescribe under Medicare Part D?
In 2023, MEGAN ELLINGSEN, MD wrote 511 Medicare Part D claims totaling $26K in drug costs for 136 beneficiaries.
Where is MEGAN ELLINGSEN, MD located?
MEGAN ELLINGSEN, MD is located at 2800 DOUGLAS AVE, BELLINGHAM, WA, 98225. Phone: (360) 733-5877.
What is MEGAN ELLINGSEN, MD's NPI number?
MEGAN ELLINGSEN, MD's National Provider Identifier (NPI) is 1790866424, issued on 10/18/2006.
How many Internal Medicine Physician providers are there in the US?
There are 172,858 Internal Medicine Physician providers across 56 states in the US. The average Internal Medicine Physician provider writes 2,716 Medicare Part D claims per year.
What drugs does MEGAN ELLINGSEN, MD prescribe most often?
Based on 2023 Medicare Part D data, MEGAN ELLINGSEN, MD's most frequently prescribed drugs include Levothyroxine Sodium, Metoprolol Succinate, Carvedilol. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does MEGAN ELLINGSEN, MD accept Medicare?
MEGAN ELLINGSEN, MD appears in CMS Medicare data with 511 Part D claims and 136 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify MEGAN ELLINGSEN, MD's credentials?
MEGAN ELLINGSEN, MD's NPI is 1790866424 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