NPI registry status
Active
2026 NPPES data Neurology Physician NPI 1245246990 M.D.
Verify on CMS → John Chapin, M.D.
Neurology 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 19,866 in Neurology 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
600
Medicare Part D claims · 95 beneficiaries · Neurology Physician avg: 1K
Generic prescribing
88%
generic claims · 12% brand-name · higher generic rates reduce patient out-of-pocket costs
Source: CMS Medicare Part D Prescriber Public Use File, 2023
Compiled from official public sources by the PlainDoctor editorial team.
What the federal data shows
John Chapin, M.D. filed 600 Medicare Part D claims in 2023 as a Neurology Physician in Spokane, Washington, prescribing 88% generic.
- 600
- Part D claims, 2023
- 88%
- 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.
John Chapin, M.D.'s Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
600 Top 31% higher than 69% 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
✓
Board certification likely (heuristic, not verified)
John Chapin, M.D. 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 John Chapin, M.D.?
Quality data not reportedPrimary specialty
Neurology Physician
Medicare Part D claims
600 54% vs specialty avg
Specialty distribution in Washington
How Neurology 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 Neurology 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).
John Chapin, M.D. appears in the CMS NPPES registry as a Neurology Physician provider holding M.D. credentials at 715 S COWLEY ST STE 228, Spokane, WA, 99202, with a listed phone of (509) 473-6706. NPI 1245246990 was issued on 08/01/2006.
Medicare Part D records for calendar year 2023 show 600 prescription claims written by this provider, covering 95 Medicare beneficiaries and totaling roughly $1.5 million in drug spend, split 12% brand-name and 88% generic by claim count.
Neurology Physician is a mid-sized specialty nationwide, with 19,866 enrolled providers across 54 states and an average of 1,309 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 | 1245246990 |
|---|---|
| Specialty | Neurology Physician |
| Credentials | M.D. |
| Gender | Male |
| NPI Issued | 08/01/2006 |
Hospital and facility affiliations
Facilities where John Chapin, M.D. 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.
Providence Health And Services Washington
Spokane, 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 John Chapin, M.D.. To verify John Chapin, M.D.'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 · Typical
John Chapin, M.D. - brand share 12.0%
Neurology Physician average
12% brand-name claims vs 88% generic, on 600 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.
600
Total Claims
$1.5M
Total Drug Cost
95
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 883
- Total Day Supply
- 25,360
- Brand vs Generic
- 12% brand / 88% generic
- Brand Drug Cost
- $1.4M
- Generic Drug Cost
- $48K
Patient Demographics
- Average Patient Age
- 69.1 years
- Avg HCC Risk Score
- 1.74
- Gender Split
- 46% female / 54% male
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What John Chapin, M.D. prescribes most
Top Medicare Part D drugs by claim count, 2023
- Riluzole
Riluzole
94 claims
- Mycophenolate Mofe…
Mycophenolate Mofetil
63 claims
- Pyridostigmine Bro…
Pyridostigmine Bromide
60 claims
- Prednisone
Prednisone
42 claims
- Azathioprine
Azathioprine
39 claims
- Baclofen 37
Baclofen
37 claims
- Citalopram Hbr 29
Citalopram Hbr
29 claims
- Gammagard Liquid 15
Gammagard Liquid
15 claims
| Drug | Claims |
|---|---|
| Riluzole | 94 |
| Mycophenolate Mofetil | 63 |
| Pyridostigmine Bromide | 60 |
| Prednisone | 42 |
| Azathioprine | 39 |
| Baclofen | 37 |
| Citalopram Hbr Citalopram Hydrobromide | 29 |
| Gammagard Liquid Immun Glob G(Igg)/Gly/Iga Ov50 | 15 |
| Lorazepam | 15 |
| Pregabalin | 15 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Neurology Physician Overview
How John Chapin, M.D. fits within the Neurology Physician landscape nationally.
19,866
Neurology Physician Providers in US
54
States with Neurology Physician
1,309
Avg Claims per Provider
John Chapin, M.D.'s 600 claims are below the specialty average of 1,309.
Nearby Neurology Physician Providers in Washington
Other clinicians with the same primary specialty enrolled in Washington, drawn from the same CMS NPPES roster as Chapin.
Nandini Abburi
Seattle, WA
Dr. Tilahun Abraha
MD
Olympia, WA
Dr. Ali Abu-Alya
DO
Seattle, WA
Dr. Carlos Acevedo
MD
Walla Walla, WA
Dr. Makeda Agonafer
M.D.
Renton, WA
Compare Neurology 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 Neurology 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
What is John Chapin, M.D.'s specialty? ▼
John Chapin, M.D. specializes in Neurology Physician and practices in Spokane, Washington. Credentials: M.D..
How much does John Chapin, M.D. prescribe under Medicare Part D? ▼
In 2023, John Chapin, M.D. wrote 600 Medicare Part D claims totaling $1.5M in drug costs for 95 beneficiaries.
Where is John Chapin, M.D. located? ▼
John Chapin, M.D. is located at 715 S COWLEY ST STE 228, Spokane, WA, 99202. Phone: (509) 473-6706.
What is John Chapin, M.D.'s NPI number? ▼
John Chapin, M.D.'s National Provider Identifier (NPI) is 1245246990, issued on 08/01/2006.
Does John Chapin, M.D. prescribe more brand-name or generic drugs? ▼
John Chapin, M.D.'s prescribing is 12% brand-name and 88% generic drugs by claim count, with $1.4M in brand drug costs.
How many Neurology Physician providers are there in the US? ▼
There are 19,866 Neurology Physician providers across 54 states in the US. The average Neurology Physician provider writes 1,309 Medicare Part D claims per year.
What drugs does John Chapin, M.D. prescribe most often? ▼
Based on 2023 Medicare Part D data, John Chapin, M.D.'s most frequently prescribed drugs include Riluzole, Mycophenolate Mofetil, Pyridostigmine Bromide. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does John Chapin, M.D. accept Medicare? ▼
John Chapin, M.D. appears in CMS Medicare data with 600 Part D claims and 95 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify John Chapin, M.D.'s credentials? ▼
John Chapin, M.D.'s NPI is 1245246990 with credentials M.D.. 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
Compiled from official public sources by the PlainDoctor editorial team.