NPI registry status
Active
2026 NPPES data Hospitalist Physician NPI 1528035565 MD
Verify on CMS → Allen Johnson, MD
Hospitalist Physician in Sedro Woolley, 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 17,950 in Hospitalist 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
527
Medicare Part D claims · 202 beneficiaries · Hospitalist Physician avg: 940
Generic prescribing
92%
generic claims · 8% brand-name · higher generic rates reduce patient out-of-pocket costs
Industry payments
$230.8
3 payments · CMS Open Payments (Sunshine Act)
Source: CMS Medicare Part D Prescriber Public Use File, 2024
What the federal data shows
Allen Johnson, MD filed 527 Medicare Part D claims in 2024 as a Hospitalist Physician in Sedro Woolley, Washington, prescribing 92% generic.
- 527
- Part D claims, 2024
- 92%
- generic prescribing
- Likely
- board-certified (heuristic)
- ≥65th
- 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 Allen Johnson, 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 1528035565), first enumerated 03/08/2006.
Source: CMS NPPES
- Reported
Medicare Part D participation
Filed 527 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
3 CMS Care Compare hospital affiliations on record — practice footprint from the Doctors and Clinicians file.
Source: CMS Care Compare
- Reported
Industry payment transparency
$230.8 in reported industry payments (3 transfers) in 2024 under the federal Sunshine Act — disclosed transfers of value, not a quality rating.
Source: CMS Open Payments
- State context
State board disciplinary context
Washington statewide board action statistics are published annually — these figures describe aggregate state activity, not Allen Johnson, 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 1528035565 · Hospitalist Physician
NPI-10 · ENUM-LEGACY · TAX-MID · RX-LIGHT · BOOK-THIN · PHOTO-ENUM
- NPI-10 1528035565
- ENUM-LEGACY 2006
- TAX-MID 18K Hospitalist Physician
- RX-LIGHT 527
- BOOK-THIN 392 in Washington
- PHOTO-ENUM Keith Conaway, M.D. · 2006
Allen Johnson, MD's Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2024, across all CMS prescribers nationally
527 ≥ 65th percentile 65% 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)
Allen Johnson, MD practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + 3 hospital affiliations - 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 Allen Johnson, MD?
Quality data not reportedPrimary specialty
Hospitalist Physician
Medicare Part D claims
527 44% vs specialty avg
Specialty distribution in Washington
How Hospitalist 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 Hospitalist 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 | 1528035565 |
|---|---|
| Specialty | Hospitalist Physician |
| Credentials | MD |
| Gender | Male |
| NPI Issued | 03/08/2006 |
Hospital and facility affiliations
Facilities where Allen Johnson, 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.
According to CMS billing records, Allen Johnson, MD is affiliated with 3 Medicare-billing facilities.
Northwest Hospital Medicine Physicians LLC
Anacortes, WA
Post Acute Medical PLLC
Anacortes, WA
South Sound Inpatient Physicians PLLC
Mount Vernon, 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).
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 Allen Johnson, MD. Source: openpaymentsdata.cms.gov.
Total received
$231
Largest payer
Inari Medical, 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.
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 Allen Johnson, MD. To verify Allen Johnson, 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.
Brand vs generic prescribing mix · Generic-heavy
Allen Johnson, MD - brand share 8.0%
Hospitalist Physician average
8% brand-name claims vs 92% generic, on 527 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.
527
Total Claims
$19K
Total Drug Cost
202
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 627.2
- Total Day Supply
- 14,987
- Brand vs Generic
- 8% brand / 92% generic
- Brand Drug Cost
- $13K
- Generic Drug Cost
- $6K
- Opioid Claims
- 32 (6.1% rate)
- Antibiotic Claims
- 68
Patient Demographics
- Average Patient Age
- 75.8 years
- Avg HCC Risk Score
- 2.00
- Gender Split
- 56% female / 44% male
- Age Distribution
- <65: 21, 65-74: 66, 75-84: 69, 85+: 46
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2024. Based on Medicare Part D data only.
What Allen Johnson, MD prescribes most
Top Medicare Part D drugs by claim count, 2024
- Metoprolol Succinate
Metoprolol Succinate
47 claims
- Atorvastatin Calcium
Atorvastatin Calcium
40 claims
- Pantoprazole Sodium
Pantoprazole Sodium
34 claims
- Amlodipine Besylate
Amlodipine Besylate
22 claims
- Furosemide
Furosemide
22 claims
- Doxycycline Hyclate 18
Doxycycline Hyclate
18 claims
- Cephalexin 17
Cephalexin
17 claims
- Clopidogrel 17
Clopidogrel
17 claims
| Drug | Claims |
|---|---|
| Metoprolol Succinate | 47 |
| Atorvastatin Calcium | 40 |
| Pantoprazole Sodium | 34 |
| Amlodipine Besylate | 22 |
| Furosemide | 22 |
| Doxycycline Hyclate | 18 |
| Cephalexin | 17 |
| Clopidogrel Clopidogrel Bisulfate | 17 |
| Eliquis Apixaban | 16 |
| Prednisone | 14 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Hospitalist Physician Overview
How Allen Johnson, MD fits within the Hospitalist Physician landscape nationally.
17,950
Hospitalist Physician Providers in US
54
States with Hospitalist Physician
940
Avg Claims per Provider
Allen Johnson, MD's 527 claims are below the specialty average of 940.
Nationwide Hospitalist Physician peers with similar MIPS or enrollment year
Two federal-record peer sets for Johnson, both outside Washington so the neighborhoods are not geographic containment.
Same NPPES enumeration year (2006)
Same-specialty clinicians who entered the NPI registry in the same calendar year, outside this state.
Nearby Hospitalist Physician Providers in Washington
Other clinicians with the same primary specialty enrolled in Washington, drawn from the same CMS NPPES roster as Johnson.
One of 392 Hospitalist Physician providers enrolled in Washington, 5 are shown here.
Dr. Ahmad Abadullah
MD
University Place, WA
Dr. Kathleen Abbasi
D.O.
Vancouver, WA
Collette Abbott
Seattle, WA
Dr. Bushra Abid
MD
Seattle, WA
Dr. Waleed Abraham
MD
Olympia, WA
Compare Hospitalist Physician nationally: see state-by-state distribution →
Frequently Asked Questions
What is Allen Johnson, MD's specialty? ▼
Allen Johnson, MD specializes in Hospitalist Physician and practices in Sedro Woolley, Washington. Credentials: MD.
How much does Allen Johnson, MD prescribe under Medicare Part D? ▼
In 2024, Allen Johnson, MD wrote 527 Medicare Part D claims totaling $19K in drug costs for 202 beneficiaries.
Where is Allen Johnson, MD located? ▼
Allen Johnson, MD is located at 1990 HOSPITAL DR, Sedro Woolley, WA, 98284. Phone: (360) 856-4222.
What is Allen Johnson, MD's NPI number? ▼
Allen Johnson, MD's National Provider Identifier (NPI) is 1528035565, issued on 03/08/2006.
Does Allen Johnson, MD prescribe more brand-name or generic drugs? ▼
Allen Johnson, MD's prescribing is 8% brand-name and 92% generic drugs by claim count, with $13K in brand drug costs.
Does Allen Johnson, MD prescribe opioids? ▼
Yes, Allen Johnson, MD had 32 opioid claims in 2024 with an opioid prescribing rate of 6.1%.
How many Hospitalist Physician providers are there in the US? ▼
There are 17,950 Hospitalist Physician providers across 54 states in the US. The average Hospitalist Physician provider writes 940 Medicare Part D claims per year.
What drugs does Allen Johnson, MD prescribe most often? ▼
Based on 2024 Medicare Part D data, Allen Johnson, MD's most frequently prescribed drugs include Metoprolol Succinate, Atorvastatin Calcium, Pantoprazole Sodium. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Allen Johnson, MD accept Medicare? ▼
Allen Johnson, MD appears in CMS Medicare data with 527 Part D claims and 202 Medicare beneficiaries in 2024. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Allen Johnson, MD's credentials? ▼
Allen Johnson, MD's NPI is 1528035565 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.