NPI registry status
Active
2026 NPPES data Internal Medicine Physician NPI 1063470037 MD
Verify on CMS → Arnulfo Deray, MD
Internal Medicine Physician in Richland, 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 174,792 in Internal 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
338
Medicare Part D claims · 127 beneficiaries · Internal Medicine Physician avg: 3K
Generic prescribing
92%
generic claims · 8% brand-name · higher generic rates reduce patient out-of-pocket costs
MIPS score
83.1/100
▼ 0 pts below national avg 83.5 · Above neutral
Industry payments
$31.92
1 payments · CMS Open Payments (Sunshine Act)
Source: CMS Medicare Part D Prescriber Public Use File, 2024
What the federal data shows
Arnulfo Deray, MD reported a CMS MIPS final score of 83.1/100 - below the 83.5 national average - and filed 338 Medicare Part D claims in 2024.
- 83.1/100
- MIPS score · 0 vs avg
- 338
- Part D claims, 2024
- 92%
- generic prescribing
- Likely
- board-certified (heuristic)
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 Arnulfo Deray, 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 1063470037), first enumerated 05/01/2006.
Source: CMS NPPES
- Reported
Medicare Part D participation
Filed 338 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 83.1/100 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
- Reported
Industry payment transparency
$31.92 in reported industry payments (1 transfers) in 2024 under the federal Sunshine Act — disclosed transfers of value, not a quality rating.
Source: CMS Open Payments
- 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.
Compare Deray with other Internal Medicine Physician providers
Same primary specialty, same federal CMS NPPES roster.
All 64 Internal Medicine Physician providers in Richland, WA →
Also enrolled in Washington
- Dr. Sheida Aalami, M.D. Seattle, WA
- Dr. Barry Aaronson, MD Seattle, WA
- Gloria Abacan Prosser, WA
- Rebecca Abay Seattle, WA
- Dr. Naseer Abbas, MD Tacoma, WA
- Dr. Joel Abbott, D.O. Tacoma, WA
Other specialties in Richland: Mental Health Counselor (228) · Massage Therapist (135) · Pharmacist (77) · Physician Assistant (72)
CMS NPPES provider registry desk
NPI 1063470037 · Internal Medicine Physician
NPI-10 · ENUM-LEGACY · TAX-MEGA · MIPS-INLINE · RX-LIGHT · BOOK-LIGHT · PHOTO-FINISH
- NPI-10 1063470037
- ENUM-LEGACY 2006
- TAX-MEGA 175K Internal Medicine
- MIPS-INLINE 83.1/100
- RX-LIGHT 338
- BOOK-LIGHT 3,888 in Washington
- PHOTO-FINISH David Frugone Larrea… · ±0.0
MIPS final-score neighbourhood
Same-specialty nationwide peers by CMS final score, not geographic proximity
- Deray · this pro…
Deray · this provider
83.1 MIPS pts
- Komal Piryani, M…
Komal Piryani, M.D.
83.1 MIPS pts
- David Frugone La…
David Frugone Larrea, M.D.
83.1 MIPS pts
- Lindsay Frye, DO…
Lindsay Frye, DO
83.1 MIPS pts
- Sami Nasrallah, …
Sami Nasrallah, MD
83.1 MIPS pts
What this shows Nearest measured MIPS peers for this NUCC specialty (2023 performance year).
Arnulfo Deray, 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.
83 ≥ 39th percentile 39% 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 Arnulfo Deray, MD sits
This provider among internal medicine physician peers
Across the 34,612 internal medicine physician providers who report both Medicare Part D prescribing and a MIPS quality score, Arnulfo Deray, MD writes more Part D claims than 36% of them and scores higher on MIPS quality than 38% - placing this provider in the lower-volume, lower-quality quadrant. Volume reflects patient-panel size and specialty, not quality; the two axes are independent.
Each dot is one internal medicine physician peer from a representative sample of 60; the gold marker is Arnulfo Deray, MD. Source: CMS Medicare Part D Prescriber data and the CMS Merit-based Incentive Payment System, 2023.
✓
Board certification likely (heuristic, not verified)
Arnulfo Deray, 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 Arnulfo Deray, MD?
Near national averagePrimary specialty
Internal Medicine Physician
Medicare Part D claims
338 88% vs specialty avg
MIPS final score
83.1/100 0.4 pts vs avg
Specialty distribution in Washington
How Internal Medicine Physician compares to other specialties among Washington providers
Medicare quality performance, MIPS
Arnulfo Deray, MD's 2023 MIPS final score plotted against the Internal Medicine Physician national average
- MIPS Final Score
- 83.1/100
- 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 | 1063470037 |
|---|---|
| Specialty | Internal Medicine Physician |
| Credentials | MD |
| Gender | Male |
| NPI Issued | 05/01/2006 |
CMS Quality Score (MIPS)
Merit-based Incentive Payment System (MIPS) scores from CMS, 2023 performance year.
83.0533
Final Score
Measured-score avg: 83.5
76.4787
Quality
67.0324
Cost
100
Promoting Interoperability
Reporting: Group practice
Hospital and facility affiliations
Facilities where Arnulfo Deray, 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.
Kadlec Regional Medical Center
★★★★☆ 4/5
Richland, WA
Acute Care Hospitals
CMS CCN: 500058
Affiliations sourced from CMS Doctors and Clinicians National Downloadable File; hospital ratings from CMS Hospital General Information dataset (cross-referenced by facility name + state).
Industry payments received (2024) - CMS Open Payments transparency data
The federal Physician Payments Sunshine Act (part of the Affordable Care Act) requires drug and medical-device manufacturers + group purchasing organizations to publicly report payments and other transfers of value to physicians and teaching hospitals. The data below covers 2024 for Arnulfo Deray, MD. Source: openpaymentsdata.cms.gov.
Total received
$32
Largest payer
PFIZER INC.
Most common payment type
Food and Beverage
Industry payments are not necessarily indicators of bias, they include research funding, consulting fees for evidence-based work, royalties for inventions, food at conferences, and similar items. The disclosure exists for transparency. Read our methodology for how we interpret this data.
Brand vs generic prescribing mix · Generic-heavy
Arnulfo Deray, MD - brand share 8.0%
Internal Medicine Physician average
8% brand-name claims vs 92% generic, on 338 2024 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 2024.
338
Total Claims
$16K
Total Drug Cost
127
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 366.733
- Total Day Supply
- 7,829
- Brand vs Generic
- 8% brand / 92% generic
- Brand Drug Cost
- $13K
- Generic Drug Cost
- $3K
- Opioid Claims
- 24 (7.1% rate)
- Antibiotic Claims
- 49
Patient Demographics
- Average Patient Age
- 74.5 years
- Avg HCC Risk Score
- 2.65
- Gender Split
- 56% female / 44% male
- Age Distribution
- <65: 17, 65-74: 42, 75-84: 44, 85+: 24
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2024. Based on Medicare Part D data only.
What Arnulfo Deray, MD prescribes most
Top Medicare Part D drugs by claim count, 2024
- Pantoprazole Sodium
Pantoprazole Sodium
23 claims
- Cefdinir
Cefdinir
20 claims
- Metoprolol Succinate
Metoprolol Succinate
15 claims
- Oxycodone Hcl
Oxycodone Hcl
15 claims
- Amoxicillin-Clavul…
Amoxicillin-Clavulanate Potass
12 claims
- Potassium Chloride
Potassium Chloride
12 claims
- Amlodipine Besylate
Amlodipine Besylate
11 claims
- Prednisone
Prednisone
11 claims
| Drug | Claims |
|---|---|
| Pantoprazole Sodium | 23 |
| Cefdinir | 20 |
| Metoprolol Succinate | 15 |
| Oxycodone Hcl | 15 |
| Amoxicillin-Clavulanate Potass Amoxicillin/Potassium Clav | 12 |
| Potassium Chloride | 12 |
| Amlodipine Besylate | 11 |
| Prednisone | 11 |
* 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 Arnulfo Deray, MD fits within the Internal Medicine Physician landscape nationally.
174,792
Internal Medicine Physician Providers in US
56
States with Internal Medicine Physician
2,785
Avg Claims per Provider
Arnulfo Deray, MD's 338 claims are below the specialty average of 2,785.
Nationwide Internal Medicine Physician peers with similar MIPS or enrollment year
Two federal-record peer sets for Deray, both outside Washington so the neighborhoods are not geographic containment.
Similar MIPS final score
Nearest same-specialty clinicians by CMS MIPS final score (83.1 here).
Same NPPES enumeration year (2006)
Same-specialty clinicians who entered the NPI registry in the same calendar year, outside this state.
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 Deray.
One of 3,888 Internal Medicine Physician providers enrolled in Washington, 11 are shown on this page.
Dr. Jesse Abbott Klafter
M.D.
Renton, WA
Dr. Paul Abdallah
MD
Seattle, WA
Dr. Abir Abdel-Kader
MD
Richland, WA
Dr. Hussein Abdille
MD
Seattle, WA
Dr. Alireza Abdolmohammadi
MD
Tacoma, WA
Compare Internal Medicine Physician nationally: see state-by-state distribution →
Frequently Asked Questions
What is Arnulfo Deray, MD's specialty? ▼
Arnulfo Deray, MD specializes in Internal Medicine Physician and practices in Richland, Washington. Credentials: MD.
How much does Arnulfo Deray, MD prescribe under Medicare Part D? ▼
In 2024, Arnulfo Deray, MD wrote 338 Medicare Part D claims totaling $16K in drug costs for 127 beneficiaries.
What is Arnulfo Deray, MD's Medicare quality score? ▼
Arnulfo Deray, MD has a CMS MIPS Final Score of 83.1/100 (Quality: 76.5, Cost: 67). 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 Arnulfo Deray, MD located? ▼
Arnulfo Deray, MD is located at 888 SWIFT BLVD, Richland, WA, 99352. Phone: (509) 946-4611.
What is Arnulfo Deray, MD's NPI number? ▼
Arnulfo Deray, MD's National Provider Identifier (NPI) is 1063470037, issued on 05/01/2006.
Does Arnulfo Deray, MD prescribe more brand-name or generic drugs? ▼
Arnulfo Deray, MD's prescribing is 8% brand-name and 92% generic drugs by claim count, with $13K in brand drug costs.
Does Arnulfo Deray, MD prescribe opioids? ▼
Yes, Arnulfo Deray, MD had 24 opioid claims in 2024 with an opioid prescribing rate of 7.1%.
How many Internal Medicine Physician providers are there in the US? ▼
There are 174,792 Internal Medicine Physician providers across 56 states in the US. The average Internal Medicine Physician provider writes 2,785 Medicare Part D claims per year.
What drugs does Arnulfo Deray, MD prescribe most often? ▼
Based on 2024 Medicare Part D data, Arnulfo Deray, MD's most frequently prescribed drugs include Pantoprazole Sodium, Cefdinir, Metoprolol Succinate. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Arnulfo Deray, MD accept Medicare? ▼
Arnulfo Deray, MD appears in CMS Medicare data with 338 Part D claims and 127 Medicare beneficiaries in 2024. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Arnulfo Deray, MD's credentials? ▼
Arnulfo Deray, MD's NPI is 1063470037 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 September 2026.