2026 NPPES data Neuromusculoskeletal Medicine & OMM Physician NPI 1205891637 D.O.
Verify on CMS →

SCOTT CHAFFIN, D.O.

Neuromusculoskeletal Medicine & OMM Physician in VASHON, Washington. CMS National Plan and Provider Enumeration System profile including specialty classification, practice address, and Medicare prescribing data when reported.

Federal data — no proprietary rating. PlainDoctor publishes the actual CMS NPPES and Medicare records — NPI registration, specialty, practice location, and prescribing data — without a composite score or editorial opinion on top. Every field traces to a federal source.
Prescribing volume
1K
Medicare Part D claims · 256 beneficiaries · Neuromusculoskeletal Medicine & OMM Physician avg: 1K
Generic prescribing
90%
generic claims · 10% brand-name · higher generic rates reduce patient out-of-pocket costs
What the federal data reveals: SCOTT CHAFFIN, D.O. is a Neuromusculoskeletal Medicine & OMM Physician ([object Object]) practicing in VASHON, Washington with a Medicare Part D prescribing footprint of 1K claims across 256 beneficiaries — 10% brand-name prescribing .

What stands out: SCOTT CHAFFIN, D.O. filed 1,191 Medicare Part D claims in 2023 across VASHON, Washington. Every figure on this page comes straight from federal CMS records, with no proprietary rating applied.

Board certification likely (heuristic — not verified)

SCOTT CHAFFIN, D.O. 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).

SCOTT CHAFFIN, D.O. at a glance

Quality data not reported

NPI registry status

Active

Issued 04/19/2006

NPI 1205891637

Primary specialty

Neuromusculoskeletal Medicine & OMM Physician

Niche

1,235 US NPIs in this specialty

Medicare Part D claims

1,191 8% vs specialty avg

2023 prescription claims

Specialty avg: 1,107

Specialty distribution in Washington

How Neuromusculoskeletal Medicine & OMM Physician compares to other specialties among Washington providers

Washington providers

Neuromusculoskeletal Medicine & OMM Physician share within Washington

1. Neuromusculoskeletal Medicine & OMM Physician42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Neuromusculoskeletal Medicine & OMM Physician share within Washington

Specialty board-certification context

Estimated specialty board-certified rate — Neuromusculoskeletal Medicine & OMM Physician (ABMS / AOA reference)

Quality data not reported
Est. board-certified rate
78%
Neuromusculoskeletal Medicine & OMM Physician ABMS/AOA estimate

Est. board-certified rate (Neuromusculoskeletal Medicine & OMM Physician) — ABMS / AOA estimate

0%100%78%
Est. board-certified rate (Neuromusculoskeletal Medicine & OMM Physician) — ABMS / AOA estimate

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).

SCOTT CHAFFIN, D.O. is a Neuromusculoskeletal Medicine & OMM Physician provider practicing in VASHON, Washington, according to the CMS National Plan and Provider Enumeration System (NPPES). Credentials: D.O.. NPI: 1205891637. This profile includes practice location, specialty classification, and organizational affiliations from the CMS provider registry. Provider information is self-reported to CMS and updated monthly.

SCOTT CHAFFIN, D.O. appears in the CMS NPPES registry as a Neuromusculoskeletal Medicine & OMM Physician provider holding D.O. credentials at 10030 SW 210TH ST, VASHON, WA, 98070, with a listed phone of (206) 463-3671. NPI 1205891637 was issued on 04/19/2006. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what CHAFFIN 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 1,191 prescription claims written by this provider, covering 256 Medicare beneficiaries and totaling roughly $62K in drug spend, split 10% brand-name and 90% generic by claim count, with an opioid prescribing rate of 2.1%. 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.

Neuromusculoskeletal Medicine & OMM Physician is a narrow specialty nationwide, with 1,235 enrolled providers across 51 states and an average of 1,107 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

10030 SW 210TH ST
VASHON, WA 98070

Provider Details

NPI 1205891637
Specialty Neuromusculoskeletal Medicine & OMM Physician
Credentials D.O.
Gender Male
NPI Issued 04/19/2006

Hospital and facility affiliations

Facilities where SCOTT CHAFFIN, D.O. 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.

CENTRAL MAINE MEDICAL CENTER
★★★★☆ 4/5
AUBURN, ME
Acute Care Hospitals
CMS CCN: 200024

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 SCOTT CHAFFIN, D.O.. To verify SCOTT CHAFFIN, D.O.'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

SCOTT CHAFFIN, D.O. — brand share 10.0%
Specialty average (est.)

10% brand-name claims vs 90% generic, on 1,191 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.

1,191
Total Claims
$62K
Total Drug Cost
256
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
2,966
Total Day Supply
87,472
Brand vs Generic
10% brand / 90% generic
Brand Drug Cost
$40K
Generic Drug Cost
$22K
Opioid Claims
25 (2.1% rate)

Patient Demographics

Average Patient Age
72.6 years
Avg HCC Risk Score
0.91
Gender Split
51% female / 49% male
Age Distribution
<65: 24, 65-74: 133, 75-84: 81, 85+: 18

Top Prescribed Drugs (Medicare Part D)

Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.

Drug Claims
Atorvastatin Calcium
121
Lisinopril
82
Amlodipine Besylate
71
Levothyroxine Sodium
56
Hydrochlorothiazide
51
Metformin Hcl
44
Losartan Potassium
39
Omeprazole
28
Rosuvastatin Calcium
28
Simvastatin
25

* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.

Neuromusculoskeletal Medicine & OMM Physician Overview

How SCOTT CHAFFIN, D.O. fits within the Neuromusculoskeletal Medicine & OMM Physician landscape nationally.

1,235
Neuromusculoskeletal Medicine & OMM Physician Providers in US
51
States with Neuromusculoskeletal Medicine & OMM Physician
1,107
Avg Claims per Provider

SCOTT CHAFFIN, D.O.'s 1,191 claims are above the specialty average of 1,107.

Nearby Neuromusculoskeletal Medicine & OMM Physician Providers in Washington

Other clinicians with the same primary specialty enrolled in Washington, drawn from the same CMS NPPES roster as CHAFFIN.

Compare Neuromusculoskeletal Medicine & OMM Physician nationally: see state-by-state distribution →

Frequently Asked Questions

What is SCOTT CHAFFIN, D.O.'s specialty?
SCOTT CHAFFIN, D.O. specializes in Neuromusculoskeletal Medicine & OMM Physician and practices in VASHON, Washington. Credentials: D.O..
How much does SCOTT CHAFFIN, D.O. prescribe under Medicare Part D?
In 2023, SCOTT CHAFFIN, D.O. wrote 1,191 Medicare Part D claims totaling $62K in drug costs for 256 beneficiaries.
Where is SCOTT CHAFFIN, D.O. located?
SCOTT CHAFFIN, D.O. is located at 10030 SW 210TH ST, VASHON, WA, 98070. Phone: (206) 463-3671.
What is SCOTT CHAFFIN, D.O.'s NPI number?
SCOTT CHAFFIN, D.O.'s National Provider Identifier (NPI) is 1205891637, issued on 04/19/2006.
Does SCOTT CHAFFIN, D.O. prescribe more brand-name or generic drugs?
SCOTT CHAFFIN, D.O.'s prescribing is 10% brand-name and 90% generic drugs by claim count, with $40K in brand drug costs.
Does SCOTT CHAFFIN, D.O. prescribe opioids?
Yes, SCOTT CHAFFIN, D.O. had 25 opioid claims in 2023 with an opioid prescribing rate of 2.1%.
How many Neuromusculoskeletal Medicine & OMM Physician providers are there in the US?
There are 1,235 Neuromusculoskeletal Medicine & OMM Physician providers across 51 states in the US. The average Neuromusculoskeletal Medicine & OMM Physician provider writes 1,107 Medicare Part D claims per year.
What drugs does SCOTT CHAFFIN, D.O. prescribe most often?
Based on 2023 Medicare Part D data, SCOTT CHAFFIN, D.O.'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 SCOTT CHAFFIN, D.O. accept Medicare?
SCOTT CHAFFIN, D.O. appears in CMS Medicare data with 1,191 Part D claims and 256 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify SCOTT CHAFFIN, D.O.'s credentials?
SCOTT CHAFFIN, D.O.'s NPI is 1205891637 with credentials D.O.. 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

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