NPI registry status
Active
2026 NPPES data Allergy Physician NPI 1023012911 M.D.
Verify on CMS → Timothy Sullivan, M.D.
Allergy 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 1,019 in Allergy 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
725
Medicare Part D claims · 166 beneficiaries · Allergy Physician avg: 755
Generic prescribing
51%
generic claims · 49% brand-name · higher generic rates reduce patient out-of-pocket costs
Industry payments
$1.2K
48 payments · CMS Open Payments (Sunshine Act)
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
Timothy Sullivan, M.D. filed 725 Medicare Part D claims in 2023 as a Allergy Physician in Ogden, Utah, prescribing 51% generic.
- 725
- Part D claims, 2023
- 51%
- 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.
Timothy Sullivan, M.D.'s Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
725 Top 29% higher than 71% 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)
Timothy Sullivan, 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 Timothy Sullivan, M.D.?
Quality data not reportedPrimary specialty
Allergy Physician
Medicare Part D claims
725 4% vs specialty avg
Specialty distribution in Utah
How Allergy 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 Allergy 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).
Timothy Sullivan, M.D. appears in the CMS NPPES registry as a Allergy Physician provider holding M.D. credentials at 4403 HARRISON BLVD., Ogden, UT, 84403, with a listed phone of (801) 387-4850. NPI 1023012911 was issued on 06/08/2005.
Medicare Part D records for calendar year 2023 show 725 prescription claims written by this provider, covering 166 Medicare beneficiaries and totaling roughly $258K in drug spend, split 49% brand-name and 51% generic by claim count.
Allergy Physician is a narrow specialty nationwide, with 1,019 enrolled providers across 49 states and an average of 755 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 | 1023012911 |
|---|---|
| Specialty | Allergy Physician |
| Credentials | M.D. |
| Gender | Male |
| NPI Issued | 06/08/2005 |
Hospital and facility affiliations
Facilities where Timothy Sullivan, 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.
Vicki J Lyons MD PC
Ogden, UT
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 Timothy Sullivan, M.D.. Source: openpaymentsdata.cms.gov.
Total received
$1.2K
Largest payer
AstraZeneca Pharmaceuticals LP
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 · Above average
Timothy Sullivan, M.D. - brand share 49.0%
Allergy Physician average
49% brand-name claims vs 51% generic, on 725 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.
725
Total Claims
$258K
Total Drug Cost
166
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 1,136
- Total Day Supply
- 31,258
- Brand vs Generic
- 49% brand / 51% generic
- Brand Drug Cost
- $245K
- Generic Drug Cost
- $13K
- Antibiotic Claims
- 54
Patient Demographics
- Average Patient Age
- 70.5 years
- Avg HCC Risk Score
- 1.18
- Gender Split
- 57% female / 43% male
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Timothy Sullivan, M.D. prescribes most
Top Medicare Part D drugs by claim count, 2023
- Montelukast Sodium
Montelukast Sodium
168 claims
- Symbicort
Symbicort
76 claims
- Albuterol Sulfate … 59
Albuterol Sulfate Hfa
59 claims
- Breo Ellipta 46
Breo Ellipta
46 claims
- Cefdinir 31
Cefdinir
31 claims
- Gammagard Liquid 26
Gammagard Liquid
26 claims
- Prednisone 26
Prednisone
26 claims
- Trelegy Ellipta 26
Trelegy Ellipta
26 claims
| Drug | Claims |
|---|---|
| Montelukast Sodium | 168 |
| Symbicort Budesonide/Formoterol Fumarate | 76 |
| Albuterol Sulfate Hfa Albuterol Sulfate | 59 |
| Breo Ellipta Fluticasone/Vilanterol | 46 |
| Cefdinir | 31 |
| Gammagard Liquid Immun Glob G(Igg)/Gly/Iga Ov50 | 26 |
| Prednisone | 26 |
| Trelegy Ellipta Fluticasone/Umeclidin/Vilanter | 26 |
| Breztri Aerosphere Budesonide/Glycopyr/Formoterol | 25 |
| Fluticasone-Salmeterol Fluticasone Propion/Salmeterol | 22 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Allergy Physician Overview
How Timothy Sullivan, M.D. fits within the Allergy Physician landscape nationally.
1,019
Allergy Physician Providers in US
49
States with Allergy Physician
755
Avg Claims per Provider
Timothy Sullivan, M.D.'s 725 claims are below the specialty average of 755.
Nearby Allergy Physician Providers in Utah
Other clinicians with the same primary specialty enrolled in Utah, drawn from the same CMS NPPES roster as Sullivan.
Dr. Jan Bernhisel-Broadbent
MD
Murray, UT
Dr. Vicki Lyons
M.D.
Ogden, UT
Dr. Marcia Muggelberg
MD
Sandy, UT
Dr. Jordan Pitt
M.D.
Farmington, UT
Dr. Robert Silge
M.D.
Salt Lake City, UT
Compare Allergy 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 Utah medical board, federal registration is not a license check. Credential verification guide
- Weigh a second option: compare this provider with a nearby Allergy 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.
Healthcare Guides
Learn more about finding, verifying, and understanding healthcare providers.
How to Find a Doctor
Step-by-step guide to choosing a provider
Verify Credentials
Check NPI, board certification & license status
Medical Specialties Explained
Who treats what and how specialties differ
Understanding Medicare Claims Data
What prescribing data reveals about a provider
In-Network vs Out-of-Network
How insurance networks affect your costs
Telehealth Guide
Virtual care options and coverage in 2026
Explore Utah
Frequently Asked Questions
What is Timothy Sullivan, M.D.'s specialty? ▼
Timothy Sullivan, M.D. specializes in Allergy Physician and practices in Ogden, Utah. Credentials: M.D..
How much does Timothy Sullivan, M.D. prescribe under Medicare Part D? ▼
In 2023, Timothy Sullivan, M.D. wrote 725 Medicare Part D claims totaling $258K in drug costs for 166 beneficiaries.
Where is Timothy Sullivan, M.D. located? ▼
Timothy Sullivan, M.D. is located at 4403 HARRISON BLVD., Ogden, UT, 84403. Phone: (801) 387-4850.
What is Timothy Sullivan, M.D.'s NPI number? ▼
Timothy Sullivan, M.D.'s National Provider Identifier (NPI) is 1023012911, issued on 06/08/2005.
Does Timothy Sullivan, M.D. prescribe more brand-name or generic drugs? ▼
Timothy Sullivan, M.D.'s prescribing is 49% brand-name and 51% generic drugs by claim count, with $245K in brand drug costs.
How many Allergy Physician providers are there in the US? ▼
There are 1,019 Allergy Physician providers across 49 states in the US. The average Allergy Physician provider writes 755 Medicare Part D claims per year.
What drugs does Timothy Sullivan, M.D. prescribe most often? ▼
Based on 2023 Medicare Part D data, Timothy Sullivan, M.D.'s most frequently prescribed drugs include Montelukast Sodium, Symbicort, Albuterol Sulfate Hfa. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Timothy Sullivan, M.D. accept Medicare? ▼
Timothy Sullivan, M.D. appears in CMS Medicare data with 725 Part D claims and 166 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Timothy Sullivan, M.D.'s credentials? ▼
Timothy Sullivan, M.D.'s NPI is 1023012911 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.