NPI registry status
Active
2026 NPPES data Family Medicine Physician NPI 1528059441 MD
Verify on CMS → Mark Flynn, MD
Family Medicine Physician in Everett, Washington.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 147,760 in Family Medicine Physician, and covers specialty classification, practice address, and Medicare Part D prescribing data when reported. According to CMS, every field reflects the provider's official federal registration, see our methodology.
Federal data, no proprietary rating.
We show these CMS records as-is - no composite score, no star rating, no editorial opinion layered on top.
Prescribing volume
5K
Medicare Part D claims · 418 beneficiaries · Family Medicine Physician avg: 3K
Generic prescribing
91%
generic claims · 8% brand-name · higher generic rates reduce patient out-of-pocket costs
Source: CMS Medicare Part D Prescriber Public Use File, 2023
What the federal data shows
Mark Flynn, MD filed 4,697 Medicare Part D claims in 2023 as a Family Medicine Physician in Everett, Washington, prescribing 91% generic.
- 5K
- Part D claims, 2023
- 91%
- generic prescribing
- Likely
- board-certified (heuristic)
- ≥93rd
- pct by Part D claim volume (lower-bound band)
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.
CMS NPPES provider registry desk
NPI 1528059441 · Family Medicine Physician
NPI-10 · ENUM-LEGACY · TAX-MEGA · RX-MID · BOOK-MID · PHOTO-ENUM
- NPI-10 1528059441
- ENUM-LEGACY 2005
- TAX-MEGA 148K Family Medicine
- RX-MID 4,697
- BOOK-MID 5,197 in Washington
- PHOTO-ENUM Galen Durose · 2005
Mark Flynn, MD's Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
4,697 ≥ 93rd percentile 93% of 1,370,886 prescribers are in lower value bands
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.
The percentile is a conservative 100-claim band: it counts only prescribers in lower claim-volume bands. Medicare Part D claim volume is activity context, not a quality measure or recommendation. See methodology § corpus placement.
Source CMS Medicare Part D Prescriber Public Use File · 2023
✓
Board certification likely (heuristic, not verified)
Mark Flynn, 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).
What does the federal data show about Mark Flynn, MD?
Quality data not reportedPrimary specialty
Family Medicine Physician
Medicare Part D claims
4,697 37% vs specialty avg
Specialty distribution in Washington
How Family Medicine Physician compares to other specialties among Washington providers
Board certification
Not published by CMS
CMS does not publish a per-provider board-certification field in NPPES. PlainDoctor does not have a reliable per-specialty certification rate to show for Family Medicine Physician. Verify directly:
How MIPS and board certification work
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).
Practice Address
Provider Details
| NPI | 1528059441 |
|---|---|
| Specialty | Family Medicine Physician |
| Credentials | MD |
| Gender | Male |
| NPI Issued | 10/31/2005 |
Hospital and facility affiliations
Facilities where Mark Flynn, 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.
Kaiser Foundation Health Plan OF Washington
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 Mark Flynn, MD. To verify Mark Flynn, 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
Mark Flynn, MD - brand share 8.0%
Family Medicine Physician average
8% brand-name claims vs 91% generic, on 4,697 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.
4,697
Total Claims
$242K
Total Drug Cost
418
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 10,615
- Total Day Supply
- 308,321
- Brand vs Generic
- 8% brand / 91% generic
- Brand Drug Cost
- $147K
- Generic Drug Cost
- $94K
- Opioid Claims
- 360 (7.7% rate)
- Antibiotic Claims
- 56
Patient Demographics
- Average Patient Age
- 73.7 years
- Avg HCC Risk Score
- 1.03
- Gender Split
- 41% female / 59% male
- Age Distribution
- <65: 22, 65-74: 221, 75-84: 136, 85+: 39
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Mark Flynn, MD prescribes most
Top Medicare Part D drugs by claim count, 2023
- Atorvastatin Calcium
Atorvastatin Calcium
356 claims
- Lisinopril
Lisinopril
261 claims
- Amlodipine Besylate
Amlodipine Besylate
174 claims
- Levothyroxine Sodium
Levothyroxine Sodium
150 claims
- Losartan Potassium
Losartan Potassium
144 claims
- Tamsulosin Hcl 135
Tamsulosin Hcl
135 claims
- Omeprazole 117
Omeprazole
117 claims
- Trazodone Hcl 116
Trazodone Hcl
116 claims
| Drug | Claims |
|---|---|
| Atorvastatin Calcium | 356 |
| Lisinopril | 261 |
| Amlodipine Besylate | 174 |
| Levothyroxine Sodium | 150 |
| Losartan Potassium | 144 |
| Tamsulosin Hcl | 135 |
| Omeprazole | 117 |
| Trazodone Hcl | 116 |
| Gabapentin | 114 |
| Simvastatin | 107 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Family Medicine Physician Overview
How Mark Flynn, MD fits within the Family Medicine Physician landscape nationally.
147,760
Family Medicine Physician Providers in US
56
States with Family Medicine Physician
3,418
Avg Claims per Provider
Mark Flynn, MD's 4,697 claims are above the specialty average of 3,418.
Nationwide Family Medicine Physician peers with similar MIPS or enrollment year
Two federal-record peer sets for Flynn, both outside Washington so the neighborhoods are not geographic containment.
Same NPPES enumeration year (2005)
Same-specialty clinicians who entered the NPI registry in the same calendar year, outside this state.
Nearby Family Medicine Physician Providers in Washington
Other clinicians with the same primary specialty enrolled in Washington, drawn from the same CMS NPPES roster as Flynn.
One of 5,197 Family Medicine Physician providers enrolled in Washington, 5 are shown here.
Dr. Shawn Aaron
MD
Longview, WA
Dr. John Abano
M.D.
Shoreline, WA
Dr. Sarah Abbot
DO
Kirkland, WA
Dr. Arthur Abbott
M.D.
Seattle, WA
Dr. Dale Abbott
MD
Burlington, WA
Compare Family Medicine Physician nationally: see state-by-state distribution →
Frequently Asked Questions
What is Mark Flynn, MD's specialty? ▼
Mark Flynn, MD specializes in Family Medicine Physician and practices in Everett, Washington. Credentials: MD.
How much does Mark Flynn, MD prescribe under Medicare Part D? ▼
In 2023, Mark Flynn, MD wrote 4,697 Medicare Part D claims totaling $242K in drug costs for 418 beneficiaries.
Where is Mark Flynn, MD located? ▼
Mark Flynn, MD is located at 2930 MAPLE ST, Everett, WA, 98201. Phone: (425) 261-1500.
What is Mark Flynn, MD's NPI number? ▼
Mark Flynn, MD's National Provider Identifier (NPI) is 1528059441, issued on 10/31/2005.
Does Mark Flynn, MD prescribe more brand-name or generic drugs? ▼
Mark Flynn, MD's prescribing is 8% brand-name and 91% generic drugs by claim count, with $147K in brand drug costs.
Does Mark Flynn, MD prescribe opioids? ▼
Yes, Mark Flynn, MD had 360 opioid claims in 2023 with an opioid prescribing rate of 7.7%.
How many Family Medicine Physician providers are there in the US? ▼
There are 147,760 Family Medicine Physician providers across 56 states in the US. The average Family Medicine Physician provider writes 3,418 Medicare Part D claims per year.
What drugs does Mark Flynn, MD prescribe most often? ▼
Based on 2023 Medicare Part D data, Mark Flynn, MD's most frequently prescribed drugs include Atorvastatin Calcium, Lisinopril, Amlodipine Besylate. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Mark Flynn, MD accept Medicare? ▼
Mark Flynn, MD appears in CMS Medicare data with 4,697 Part D claims and 418 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Mark Flynn, MD's credentials? ▼
Mark Flynn, MD's NPI is 1528059441 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
View source datasets and methodology notes
- 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
Every figure on PlainDoctor is rendered directly from the federal CMS NPPES registry, Medicare Part D, MIPS, and Open Payments records, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of May 2026.