NPI registry status
Active
2026 NPPES data Otolaryngology Physician NPI 1356338388 MD
Verify on CMS → John Siddoway, MD
Otolaryngology Physician in Ogden, Utah.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 11,060 in Otolaryngology 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
329
Medicare Part D claims · 106 beneficiaries · Otolaryngology Physician avg: 536
Generic prescribing
94%
generic claims · 6% brand-name · higher generic rates reduce patient out-of-pocket costs
Industry payments
$210.62
11 payments · CMS Open Payments (Sunshine Act)
Source: CMS Medicare Part D Prescriber Public Use File, 2024
What the federal data shows
John Siddoway, MD filed 329 Medicare Part D claims in 2024 as an Otolaryngology Physician in Ogden, Utah, prescribing 94% generic.
- 329
- Part D claims, 2024
- 94%
- generic prescribing
- $210.62
- industry payments (Sunshine Act)
- ≥56th
- 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 John Siddoway, 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 1356338388), first enumerated 10/04/2005.
Source: CMS NPPES
- Reported
Medicare Part D participation
Filed 329 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
Practices in an ABMS-board-eligible specialty; board certification not confirmed in federal records.
- Reported
Industry payment transparency
$210.62 in reported industry payments (11 transfers) in 2024 under the federal Sunshine Act — disclosed transfers of value, not a quality rating.
Source: CMS Open Payments
- 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 1356338388 · Otolaryngology Physician
NPI-10 · ENUM-LEGACY · TAX-MID · RX-LIGHT · BOOK-THIN · PHOTO-ENUM
- NPI-10 1356338388
- ENUM-LEGACY 2005
- TAX-MID 11K Otolaryngology Physician
- RX-LIGHT 329
- BOOK-THIN 121 in Utah
- PHOTO-ENUM Mark Bookout, M.D. · 2005
John Siddoway, MD's Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2024, across all CMS prescribers nationally
329 ≥ 56th percentile 56% 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-eligible specialty (heuristic, not verified)
John Siddoway, 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 John Siddoway, MD?
Quality data not reportedPrimary specialty
Otolaryngology Physician
Medicare Part D claims
329 39% vs specialty avg
Specialty distribution in Utah
How Otolaryngology Physician compares to other specialties among Utah 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 Otolaryngology 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 | 1356338388 |
|---|---|
| Specialty | Otolaryngology Physician |
| Credentials | MD |
| Gender | Male |
| NPI Issued | 10/04/2005 |
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 John Siddoway, MD. Source: openpaymentsdata.cms.gov.
Total received
$211
Largest payer
GENZYME CORPORATION
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.
Brand vs generic prescribing mix · Generic-heavy
John Siddoway, MD - brand share 6.0%
Otolaryngology Physician average
6% brand-name claims vs 94% generic, on 329 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.
329
Total Claims
$8K
Total Drug Cost
106
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 557.9
- Total Day Supply
- 14,897
- Brand vs Generic
- 6% brand / 94% generic
- Brand Drug Cost
- $3K
- Generic Drug Cost
- $5K
- Antibiotic Claims
- 38
Patient Demographics
- Average Patient Age
- 73.0 years
- Avg HCC Risk Score
- 1.18
- Gender Split
- 53% female / 47% male
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2024. Based on Medicare Part D data only.
What John Siddoway, MD prescribes most
Top Medicare Part D drugs by claim count, 2024
- Montelukast Sodium
Montelukast Sodium
64 claims
- Omeprazole
Omeprazole
41 claims
- Pantoprazole Sodium 24
Pantoprazole Sodium
24 claims
- Prednisone 24
Prednisone
24 claims
- Famotidine 21
Famotidine
21 claims
- Triamterene-Hydroc… 19
Triamterene-Hydrochlorothiazid
19 claims
- Albuterol Sulfate … 11
Albuterol Sulfate Hfa
11 claims
| Drug | Claims |
|---|---|
| Montelukast Sodium | 64 |
| Omeprazole | 41 |
| Pantoprazole Sodium | 24 |
| Prednisone | 24 |
| Famotidine | 21 |
| Triamterene-Hydrochlorothiazid Triamterene/Hydrochlorothiazid | 19 |
| Albuterol Sulfate Hfa Albuterol Sulfate | 11 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Otolaryngology Physician Overview
How John Siddoway, MD fits within the Otolaryngology Physician landscape nationally.
11,060
Otolaryngology Physician Providers in US
54
States with Otolaryngology Physician
536
Avg Claims per Provider
John Siddoway, MD's 329 claims are below the specialty average of 536.
Nationwide Otolaryngology Physician peers with similar MIPS or enrollment year
Two federal-record peer sets for Siddoway, both outside Utah 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 Otolaryngology Physician Providers in Utah
Other clinicians with the same primary specialty enrolled in Utah, drawn from the same CMS NPPES roster as Siddoway.
One of 121 Otolaryngology Physician providers enrolled in Utah, 5 are shown here.
Dr. Craig Anderson
M.D.
Draper, UT
Dr. Douglas Anderson
MD
Ogden, UT
Dr. Peter Anderson
M.D.
West Jordan, UT
Dr. Zachary Anderson
M.D.
Provo, UT
Dr. Jon Aoki
M.D.
West Valley City, UT
Compare Otolaryngology Physician nationally: see state-by-state distribution →
Frequently Asked Questions
What is John Siddoway, MD's specialty? ▼
John Siddoway, MD specializes in Otolaryngology Physician and practices in Ogden, Utah. Credentials: MD.
How much does John Siddoway, MD prescribe under Medicare Part D? ▼
In 2024, John Siddoway, MD wrote 329 Medicare Part D claims totaling $8K in drug costs for 106 beneficiaries.
Where is John Siddoway, MD located? ▼
John Siddoway, MD is located at 4650 HARRISON BLVD, Ogden, UT, 84403. Phone: (801) 475-3075.
What is John Siddoway, MD's NPI number? ▼
John Siddoway, MD's National Provider Identifier (NPI) is 1356338388, issued on 10/04/2005.
Does John Siddoway, MD prescribe more brand-name or generic drugs? ▼
John Siddoway, MD's prescribing is 6% brand-name and 94% generic drugs by claim count, with $3K in brand drug costs.
How many Otolaryngology Physician providers are there in the US? ▼
There are 11,060 Otolaryngology Physician providers across 54 states in the US. The average Otolaryngology Physician provider writes 536 Medicare Part D claims per year.
What drugs does John Siddoway, MD prescribe most often? ▼
Based on 2024 Medicare Part D data, John Siddoway, MD's most frequently prescribed drugs include Montelukast Sodium, Omeprazole, Pantoprazole Sodium. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does John Siddoway, MD accept Medicare? ▼
John Siddoway, MD appears in CMS Medicare data with 329 Part D claims and 106 Medicare beneficiaries in 2024. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify John Siddoway, MD's credentials? ▼
John Siddoway, MD's NPI is 1356338388 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.