Richard Carson, MD
Nephrology Physician in Spokane, 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 10,534 in Nephrology 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.
What the federal data shows
Richard Carson, MD filed 385 Medicare Part D claims in 2023 as a Nephrology Physician in Spokane, Washington.
- 385
- 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.
Richard Carson, MD's Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
385 Top 43% higher than 57% of 1,370,886 prescribers
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
Richard Carson, 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 Richard Carson, MD?
Quality data not reportedPrimary specialty
Medicare Part D claims
Specialty distribution in Washington
How Nephrology Physician compares to other specialties among Washington providers
Largest specialties in Washington (% of in-state providers)
Nephrology Physician ranks #98 among Washington's specialties (0.1% of in-state providers)
Each bar is a specialty's share of the Washington provider total, by primary NUCC taxonomy. The highlighted bar is Nephrology Physician; the long tail of smaller specialties is omitted for legibility.
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 Nephrology Physician. Verify directly:
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).
Richard Carson, MD appears in the CMS NPPES registry as a Nephrology Physician provider holding MD credentials at 105 W 8TH AVE STE 1000, Spokane, WA, 99204, with a listed phone of (509) 474-4500. NPI 1114929668 was issued on 08/15/2005. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what Carson 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 385 prescription claims written by this provider, covering 68 Medicare beneficiaries and totaling roughly $27K 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.
Nephrology Physician is a mid-sized specialty nationwide, with 10,534 enrolled providers across 55 states and an average of 1,454 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
Provider Details
| NPI | 1114929668 |
|---|---|
| Specialty | Nephrology Physician |
| Credentials | MD |
| Gender | Male |
| NPI Issued | 08/15/2005 |
Verify this provider's license
PlainDoctor pulls this profile from the CMS NPPES public registry. Confirm Richard Carson, MD's current license status, disciplinary history, and board certifications with the Washington State Department of Health, Medical Quality Assurance Commission in Washington before relying on this page for a clinical or care decision.
How we sourced this profile
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 Richard Carson, MD. To verify Richard Carson, MD's current license status, search the WMC public license lookup directly, or check the Federation of State Medical Boards (FSMB) verification service.
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.
Prescribing Breakdown
- 30-Day Fills
- 589
- Total Day Supply
- 16,952
- Generic Drug Cost
- $23K
- Antibiotic Claims
- 18
Patient Demographics
- Average Patient Age
- 57.6 years
- Avg HCC Risk Score
- 4.93
- Gender Split
- 40% female / 60% male
- Age Distribution
- <65: 38, 65-74: 23, 75-84: N/A, 85+: N/A
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Richard Carson, MD prescribes most
Top Medicare Part D drugs by claim count, 2023
- Cinacalcet Hcl
Cinacalcet Hcl
40 claims
- Prednisone
Prednisone
40 claims
- Carvedilol
Carvedilol
25 claims
- Nifedipine Er
Nifedipine Er
24 claims
- Amlodipine Besylate
Amlodipine Besylate
23 claims
- Potassium Chloride
Potassium Chloride
23 claims
- Pantoprazole Sodium
Pantoprazole Sodium
20 claims
- Famotidine
Famotidine
17 claims
| Drug | Claims |
|---|---|
| Cinacalcet Hcl | 40 |
| Prednisone | 40 |
| Carvedilol | 25 |
| Nifedipine Er Nifedipine | 24 |
| Amlodipine Besylate | 23 |
| Potassium Chloride | 23 |
| Pantoprazole Sodium | 20 |
| Famotidine | 17 |
| Atorvastatin Calcium | 14 |
| Valganciclovir Hcl | 12 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Nephrology Physician Overview
How Richard Carson, MD fits within the Nephrology Physician landscape nationally.
Richard Carson, MD's 385 claims are below the specialty average of 1,454.
Nearby Nephrology Physician Providers in Washington
Other clinicians with the same primary specialty enrolled in Washington, drawn from the same CMS NPPES roster as Carson.
Compare Nephrology Physician nationally: see state-by-state distribution →
Before you book an appointment
Use this federal record as your verification checklist, not as a recommendation.
- Confirm the NPI record is current in the official CMS registry, providers update their own NPPES details, and moves can lag. Verify this NPI
- Check the active license and any disciplinary history with the Washington medical board, federal registration is not a license check. Credential verification guide
- Weigh a second option: compare this provider with a nearby Nephrology Physician peer on Medicare volume and prescribing patterns. Compare providers
Medicare Part D and MIPS figures describe practice patterns in federal programs only, they are not quality ratings, and PlainDoctor does not rate, rank, or recommend providers.
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Frequently Asked Questions
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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