NPI registry status
Active
2026 NPPES data Orthopaedic Surgery Physician NPI 1275552531 MD
Verify on CMS → Mark Merrell, MD
Orthopaedic Surgery Physician in Kennewick, 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 26,109 in Orthopaedic Surgery 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
1K
Medicare Part D claims · 316 beneficiaries · Orthopaedic Surgery Physician avg: 344
MIPS score
13.2/100
▼ 70 pts below national avg 83.5 · Penalty band
What the federal data shows
Mark Merrell, MD reported a CMS MIPS final score of 13.2/100 - below the 83.5 national average - and filed 1,056 Medicare Part D claims in 2024.
- 13.2/100
- MIPS score · -70 vs avg
- 1K
- Part D claims, 2024
- Likely
- board-certified (heuristic)
- ≥2nd
- pct among measured MIPS (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.
Federal trust snapshot
What official records show about Mark Merrell, MD
Federal records show an active NPI with both Medicare prescribing volume and a measured CMS quality score — objective registry data, not patient reviews.
- Verified
NPI registry status
Active listing in the CMS National Provider Identifier Registry (NPI 1275552531), first enumerated 07/18/2006.
Source: CMS NPPES
- Reported
Medicare Part D participation
Filed 1,056 Medicare Part D prescription claims in the 2023 CMS public use file — indicates active Medicare prescribing participation.
Source: CMS Part D Prescriber PUF
- Reported
CMS quality reporting (MIPS)
Reported a CMS MIPS final score of 13.2/100 in the Quality Payment Program — a federal quality measure, not a patient review.
Source: CMS Quality Payment Program
- Reported
Board certification signal
Heuristic suggests board-certified status based on ABMS-eligible specialty taxonomy plus active CMS participation signals — not a direct ABMS verification.
- Reported
Hospital affiliations
1 CMS Care Compare hospital affiliation on record — practice footprint from the Doctors and Clinicians file.
Source: CMS Care Compare
- State context
State board disciplinary context
Washington statewide board action statistics are published annually — these figures describe aggregate state activity, not Mark Merrell, MD's individual license status. Verify directly with the state medical board.
Source: WMC annual report 2023
- Not in federal data
Individual sanction lookup
PlainDoctor does not publish per-provider disciplinary determinations. Confirm current license and any individual actions through the state medical board or FSMB verification service.
Source: State medical board / FSMB
This trust snapshot summarizes only what appears in federal CMS/NPPES public records. It is not a composite score, star rating, patient review, or clinical recommendation. PlainDoctor never fabricates reviews or AggregateRating schema.
CMS NPPES provider registry desk
NPI 1275552531 · Orthopaedic Surgery Physician
NPI-10 · ENUM-LEGACY · TAX-MID · MIPS-LOW · RX-MID · BOOK-LIGHT · PHOTO-FINISH
- NPI-10 1275552531
- ENUM-LEGACY 2006
- TAX-MID 26K Orthopaedic Surgery
- MIPS-LOW 13.2/100
- RX-MID 1,056
- BOOK-LIGHT 693 in Washington
- PHOTO-FINISH Peter Hanson · ±0.1
MIPS final-score neighbourhood
Same-specialty nationwide peers by CMS final score, not geographic proximity
- Peter Hanson · l…
Peter Hanson
13.1 MIPS pts
- Merrell · this p…
Merrell · this provider
13.2 MIPS pts
- James Thriffiley…
James Thriffiley
13.3 MIPS pts
- Igor Jercinovich…
Igor Jercinovich
13.3 MIPS pts
- Anthony Quinn · …
Anthony Quinn
13.3 MIPS pts
What this shows Nearest measured MIPS peers for this NUCC specialty (2023 performance year).
Mark Merrell, MD's MIPS score vs every measured U.S. clinician
CMS Merit-based Incentive Payment System (MIPS) final score, 2023, the federal quality measure. Clinicians whose score CMS assigned without scoring any category are excluded.
13 ≥ 2nd percentile 2% of 454,083 measured providers are in lower value bands
Each bar is a band; taller bars hold more measured providers. 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 whole-score-point band: it counts only measured clinicians in lower score bands. A CMS MIPS metric is not a recommendation or a clinical-quality rating by PlainDoctor. See methodology § corpus placement.
Source CMS Merit-based Incentive Payment System (MIPS) · 2023
Where Mark Merrell, MD sits
This provider among orthopaedic surgery physician peers
Across the 7,229 orthopaedic surgery physician providers who report both Medicare Part D prescribing and a MIPS quality score, Mark Merrell, MD writes more Part D claims than 91% of them and scores higher on MIPS quality than 4% - placing this provider in the high-volume, lower-quality quadrant. Volume reflects patient-panel size and specialty, not quality; the two axes are independent.
Each dot is one orthopaedic surgery physician peer from a representative sample of 60; the gold marker is Mark Merrell, MD. Source: CMS Medicare Part D Prescriber data and the CMS Merit-based Incentive Payment System, 2023.
✓
Board certification likely (heuristic, not verified)
Mark Merrell, MD practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + MIPS quality reporting + 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 Merrell, MD?
Below national averagePrimary specialty
Orthopaedic Surgery Physician
Medicare Part D claims
1,056 207% vs specialty avg
MIPS final score
13.2/100 70.3 pts vs avg
Specialty distribution in Washington
How Orthopaedic Surgery Physician compares to other specialties among Washington providers
Medicare quality performance, MIPS
Mark Merrell, MD's 2023 MIPS final score plotted against the Orthopaedic Surgery Physician national average
- MIPS Final Score
- 13.2/100
- vs 83.5 national avg · 2023 performance year
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 | 1275552531 |
|---|---|
| Specialty | Orthopaedic Surgery Physician |
| Credentials | MD |
| Gender | Male |
| NPI Issued | 07/18/2006 |
CMS Quality Score (MIPS)
Merit-based Incentive Payment System (MIPS) scores from CMS, 2023 performance year.
13.1678
Final Score
Measured-score avg: 83.5
13.2396
Quality
30.653
Cost
0
Promoting Interoperability
Reporting: Individual
Hospital and facility affiliations
Facilities where Mark Merrell, 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.
Tri-City Orthopaedic Clinic P S C
Kennewick, 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 Merrell, MD. To verify Mark Merrell, 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 2024.
1,056
Total Claims
$9K
Total Drug Cost
316
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 1,068.933
- Total Day Supply
- 12,458
- Generic Drug Cost
- $9K
- Opioid Claims
- 314 (29.7% rate)
- Antibiotic Claims
- 223
Patient Demographics
- Average Patient Age
- 73.0 years
- Avg HCC Risk Score
- 0.87
- Gender Split
- 58% female / 42% male
- Age Distribution
- <65: 17, 65-74: 176, 75-84: 111, 85+: 12
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2024. Based on Medicare Part D data only.
What Mark Merrell, MD prescribes most
Top Medicare Part D drugs by claim count, 2024
- Oxycodone-Acetamin…
Oxycodone-Acetaminophen
240 claims
- Ondansetron Odt
Ondansetron Odt
198 claims
- Meloxicam
Meloxicam
197 claims
- Penicillin V Potas…
Penicillin V Potassium
140 claims
- Cephalexin 39
Cephalexin
39 claims
- Ibuprofen 36
Ibuprofen
36 claims
- Tramadol Hcl 35
Tramadol Hcl
35 claims
- Prednisone 30
Prednisone
30 claims
| Drug | Claims |
|---|---|
| Oxycodone-Acetaminophen Oxycodone Hcl/Acetaminophen | 240 |
| Ondansetron Odt Ondansetron | 198 |
| Meloxicam | 197 |
| Penicillin V Potassium | 140 |
| Cephalexin | 39 |
| Ibuprofen | 36 |
| Tramadol Hcl | 35 |
| Prednisone | 30 |
| Hydrocodone-Acetaminophen Hydrocodone/Acetaminophen | 29 |
| Clindamycin Hcl | 26 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Orthopaedic Surgery Physician Overview
How Mark Merrell, MD fits within the Orthopaedic Surgery Physician landscape nationally.
26,109
Orthopaedic Surgery Physician Providers in US
56
States with Orthopaedic Surgery Physician
344
Avg Claims per Provider
Mark Merrell, MD's 1,056 claims are above the specialty average of 344.
Nationwide Orthopaedic Surgery Physician peers with similar MIPS or enrollment year
Two federal-record peer sets for Merrell, both outside Washington so the neighborhoods are not geographic containment.
Similar MIPS final score
Nearest same-specialty clinicians by CMS MIPS final score (13.2 here).
Same NPPES enumeration year (2006)
Same-specialty clinicians who entered the NPI registry in the same calendar year, outside this state.
Nearby Orthopaedic Surgery Physician Providers in Washington
Other clinicians with the same primary specialty enrolled in Washington, drawn from the same CMS NPPES roster as Merrell.
One of 693 Orthopaedic Surgery Physician providers enrolled in Washington, 5 are shown here.
Dr. Omar Abdul-Hadi
MD
Silverdale, WA
Dr. Sean Adelman
MD
Kirkland, WA
Dr. Dale Adishian
MD
Coupeville, WA
Dr. Laddie Agtarap
M.D.
Olympia, WA
Dr. James Alberts
M.D.
Edmonds, WA
Compare Orthopaedic Surgery Physician nationally: see state-by-state distribution →
Frequently Asked Questions
What is Mark Merrell, MD's specialty? ▼
Mark Merrell, MD specializes in Orthopaedic Surgery Physician and practices in Kennewick, Washington. Credentials: MD.
How much does Mark Merrell, MD prescribe under Medicare Part D? ▼
In 2024, Mark Merrell, MD wrote 1,056 Medicare Part D claims totaling $9K in drug costs for 316 beneficiaries.
What is Mark Merrell, MD's Medicare quality score? ▼
Mark Merrell, MD has a CMS MIPS Final Score of 13.2/100 (Quality: 13.2, Cost: 30.7). The average MIPS Final Score across the 454,083 clinicians with at least one published category score is 83.5; clinicians whose score CMS assigned without scoring any category are excluded from that average. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is Mark Merrell, MD located? ▼
Mark Merrell, MD is located at 6703 W RIO GRANDE AVE, Kennewick, WA, 99336. Phone: (509) 460-5588.
What is Mark Merrell, MD's NPI number? ▼
Mark Merrell, MD's National Provider Identifier (NPI) is 1275552531, issued on 07/18/2006.
Does Mark Merrell, MD prescribe opioids? ▼
Yes, Mark Merrell, MD had 314 opioid claims in 2024 with an opioid prescribing rate of 29.7%.
How many Orthopaedic Surgery Physician providers are there in the US? ▼
There are 26,109 Orthopaedic Surgery Physician providers across 56 states in the US. The average Orthopaedic Surgery Physician provider writes 344 Medicare Part D claims per year.
What drugs does Mark Merrell, MD prescribe most often? ▼
Based on 2024 Medicare Part D data, Mark Merrell, MD's most frequently prescribed drugs include Oxycodone-Acetaminophen, Ondansetron Odt, Meloxicam. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Mark Merrell, MD accept Medicare? ▼
Mark Merrell, MD appears in CMS Medicare data with 1,056 Part D claims and 316 Medicare beneficiaries in 2024. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Mark Merrell, MD's credentials? ▼
Mark Merrell, MD's NPI is 1275552531 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 (2024). Includes claims, drug costs, beneficiaries, and opioid prescribing rates.
- Quality Performance
- CMS Merit-based Incentive Payment System (MIPS) - 2023 performance year.
- 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 August 2026 (NPPES) / 2024 (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 August 2026.