NPI registry status
Active
2026 NPPES data General Practice Physician NPI 1376544098 MD
Verify on CMS → Stephen Hennessey, MD
General Practice Physician in Chehalis, 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 16,838 in General Practice 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
429
Medicare Part D claims · 292 beneficiaries · General Practice Physician avg: 3K
What the federal data shows
Stephen Hennessey, MD filed 429 Medicare Part D claims in 2024 as a General Practice Physician in Chehalis, Washington.
- 429
- Part D claims, 2024
- Likely
- board-certified (heuristic)
- ≥61st
- pct by Part D claim volume (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 Stephen Hennessey, MD
Federal records show an active NPI with Medicare Part D prescribing activity — verifiable registry data, not a proprietary rating.
- Verified
NPI registry status
Active listing in the CMS National Provider Identifier Registry (NPI 1376544098), first enumerated 08/03/2005.
Source: CMS NPPES
- Reported
Medicare Part D participation
Filed 429 Medicare Part D prescription claims in the 2023 CMS public use file — indicates active Medicare prescribing participation.
Source: CMS Part D Prescriber PUF
- 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 Stephen Hennessey, 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 1376544098 · General Practice Physician
NPI-10 · ENUM-LEGACY · TAX-MID · RX-LIGHT · BOOK-THIN · PHOTO-ENUM
- NPI-10 1376544098
- ENUM-LEGACY 2005
- TAX-MID 17K General Practice
- RX-LIGHT 429
- BOOK-THIN 429 in Washington
- PHOTO-ENUM Paul Abide · 2005
Stephen Hennessey, MD's Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2024, across all CMS prescribers nationally
429 ≥ 61st percentile 61% of 1,416,883 prescribers are in lower value bands
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.
The percentile is a conservative 100-claim band: it counts only prescribers in lower claim-volume bands. Medicare Part D claim volume is activity context, not a quality measure or recommendation. See methodology § corpus placement.
Source CMS Medicare Part D Prescriber Public Use File · 2024
✓
Board certification likely (heuristic, not verified)
Stephen Hennessey, MD 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 Stephen Hennessey, MD?
Quality data not reportedPrimary specialty
General Practice Physician
Medicare Part D claims
429 85% vs specialty avg
Specialty distribution in Washington
How General Practice 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 General Practice 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).
Practice Address
Provider Details
| NPI | 1376544098 |
|---|---|
| Specialty | General Practice Physician |
| Credentials | MD |
| Gender | Male |
| NPI Issued | 08/03/2005 |
Hospital and facility affiliations
Facilities where Stephen Hennessey, 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.
Lewis County Community Health Services
Toledo, 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 Stephen Hennessey, MD. To verify Stephen Hennessey, 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.
429
Total Claims
$7K
Total Drug Cost
292
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 447.667
- Total Day Supply
- 5,077
- Generic Drug Cost
- $4K
- Antibiotic Claims
- 233
Patient Demographics
- Average Patient Age
- 70.7 years
- Avg HCC Risk Score
- 1.27
- Gender Split
- 63% female / 37% male
- Age Distribution
- <65: 54, 65-74: 134, 75-84: 84, 85+: 20
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2024. Based on Medicare Part D data only.
What Stephen Hennessey, MD prescribes most
Top Medicare Part D drugs by claim count, 2024
- Azithromycin
Azithromycin
52 claims
- Amoxicillin
Amoxicillin
47 claims
- Prednisone
Prednisone
46 claims
- Nitrofurantoin Mon…
Nitrofurantoin Mono-Macro
35 claims
- Cephalexin 19
Cephalexin
19 claims
- Sulfamethoxazole-T… 19
Sulfamethoxazole-Trimethoprim
19 claims
- Albuterol Sulfate … 18
Albuterol Sulfate Hfa
18 claims
- Ciprofloxacin Hcl 17
Ciprofloxacin Hcl
17 claims
| Drug | Claims |
|---|---|
| Azithromycin | 52 |
| Amoxicillin | 47 |
| Prednisone | 46 |
| Nitrofurantoin Mono-Macro Nitrofurantoin Monohyd/M-Cryst | 35 |
| Cephalexin | 19 |
| Sulfamethoxazole-Trimethoprim Sulfamethoxazole/Trimethoprim | 19 |
| Albuterol Sulfate Hfa Albuterol Sulfate | 18 |
| Ciprofloxacin Hcl | 17 |
| Doxycycline Hyclate | 16 |
| Cefdinir | 14 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
General Practice Physician Overview
How Stephen Hennessey, MD fits within the General Practice Physician landscape nationally.
16,838
General Practice Physician Providers in US
56
States with General Practice Physician
2,957
Avg Claims per Provider
Stephen Hennessey, MD's 429 claims are below the specialty average of 2,957.
Nationwide General Practice Physician peers with similar MIPS or enrollment year
Two federal-record peer sets for Hennessey, both outside Washington so the neighborhoods are not geographic containment.
Same NPPES enumeration year (2005)
Same-specialty clinicians who entered the NPI registry in the same calendar year, outside this state.
Nearby General Practice Physician Providers in Washington
Other clinicians with the same primary specialty enrolled in Washington, drawn from the same CMS NPPES roster as Hennessey.
One of 429 General Practice Physician providers enrolled in Washington, 5 are shown here.
Dr. Victoria Acosta
DO
Mossyrock, WA
Dr. Gurmesa Adula
MD
Tacoma, WA
Dr. David Ahern
MD
Tacoma, WA
Dr. Jonathan Alexander
MD
Tacoma, WA
Carolina Alvarez
Tacoma, WA
Compare General Practice Physician nationally: see state-by-state distribution →
Frequently Asked Questions
What is Stephen Hennessey, MD's specialty? ▼
Stephen Hennessey, MD specializes in General Practice Physician and practices in Chehalis, Washington. Credentials: MD.
How much does Stephen Hennessey, MD prescribe under Medicare Part D? ▼
In 2024, Stephen Hennessey, MD wrote 429 Medicare Part D claims totaling $7K in drug costs for 292 beneficiaries.
Where is Stephen Hennessey, MD located? ▼
Stephen Hennessey, MD is located at 2690 NE KRESKY AVE, Chehalis, WA, 98532. Phone: (360) 330-9595.
What is Stephen Hennessey, MD's NPI number? ▼
Stephen Hennessey, MD's National Provider Identifier (NPI) is 1376544098, issued on 08/03/2005.
How many General Practice Physician providers are there in the US? ▼
There are 16,838 General Practice Physician providers across 56 states in the US. The average General Practice Physician provider writes 2,957 Medicare Part D claims per year.
What drugs does Stephen Hennessey, MD prescribe most often? ▼
Based on 2024 Medicare Part D data, Stephen Hennessey, MD's most frequently prescribed drugs include Azithromycin, Amoxicillin, Prednisone. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Stephen Hennessey, MD accept Medicare? ▼
Stephen Hennessey, MD appears in CMS Medicare data with 429 Part D claims and 292 Medicare beneficiaries in 2024. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Stephen Hennessey, MD's credentials? ▼
Stephen Hennessey, MD's NPI is 1376544098 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.
- 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.