NPI registry status
Active
2026 NPPES data Allergy & Immunology Physician NPI 1235194200 M.D.
Verify on CMS → Thomas Scarborough, M.D.
Allergy & Immunology Physician in Billings, Montana.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 3,390 in Allergy & Immunology 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
1K
Medicare Part D claims · 158 beneficiaries · Allergy & Immunology Physician avg: 764
Generic prescribing
53%
generic claims · 47% brand-name · higher generic rates reduce patient out-of-pocket costs
Industry payments
$349.8
17 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
Thomas Scarborough, M.D. filed 1,389 Medicare Part D claims in 2023 as a Allergy & Immunology Physician in Billings, Montana, prescribing 53% generic.
- 1K
- Part D claims, 2023
- 53%
- generic prescribing
- $349.8
- industry payments (Sunshine Act)
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.
Thomas Scarborough, M.D.'s Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
1,389 Top 21% higher than 79% 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-eligible specialty (heuristic, not verified)
Thomas Scarborough, M.D. 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 Thomas Scarborough, M.D.?
Quality data not reportedPrimary specialty
Allergy & Immunology Physician
Medicare Part D claims
1,389 82% vs specialty avg
Specialty distribution in Montana
How Allergy & Immunology Physician compares to other specialties among Montana 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 & Immunology 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).
Thomas Scarborough, M.D. appears in the CMS NPPES registry as a Allergy & Immunology Physician provider holding M.D. credentials at 3860 AVENUE B STE C, Billings, MT, 59102, with a listed phone of (406) 237-5500. NPI 1235194200 was issued on 04/20/2006.
Medicare Part D records for calendar year 2023 show 1,389 prescription claims written by this provider, covering 158 Medicare beneficiaries and totaling roughly $491K in drug spend, split 47% brand-name and 53% generic by claim count.
Allergy & Immunology Physician is a narrow specialty nationwide, with 3,390 enrolled providers across 52 states and an average of 764 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 | 1235194200 |
|---|---|
| Specialty | Allergy & Immunology Physician |
| Credentials | M.D. |
| Gender | Male |
| NPI Issued | 04/20/2006 |
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 Thomas Scarborough, M.D.. Source: openpaymentsdata.cms.gov.
Total received
$350
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
Thomas Scarborough, M.D. - brand share 47.0%
Allergy & Immunology Physician average
47% brand-name claims vs 53% generic, on 1,389 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.
1,389
Total Claims
$491K
Total Drug Cost
158
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 1,908
- Total Day Supply
- 52,617
- Brand vs Generic
- 47% brand / 53% generic
- Brand Drug Cost
- $471K
- Generic Drug Cost
- $20K
- Antibiotic Claims
- 29
Patient Demographics
- Average Patient Age
- 69.3 years
- Avg HCC Risk Score
- 0.92
- Gender Split
- 64% female / 36% male
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Thomas Scarborough, M.D. prescribes most
Top Medicare Part D drugs by claim count, 2023
- Montelukast Sodium
Montelukast Sodium
264 claims
- Symbicort
Symbicort
134 claims
- Albuterol Sulfate …
Albuterol Sulfate Hfa
125 claims
- Trelegy Ellipta 90
Trelegy Ellipta
90 claims
- Spiriva Respimat 76
Spiriva Respimat
76 claims
- Fluticasone Propio… 75
Fluticasone Propionate
75 claims
- Levocetirizine Dih… 68
Levocetirizine Dihydrochloride
68 claims
- Ipratropium Bromide 55
Ipratropium Bromide
55 claims
| Drug | Claims |
|---|---|
| Montelukast Sodium | 264 |
| Symbicort Budesonide/Formoterol Fumarate | 134 |
| Albuterol Sulfate Hfa Albuterol Sulfate | 125 |
| Trelegy Ellipta Fluticasone/Umeclidin/Vilanter | 90 |
| Spiriva Respimat Tiotropium Bromide | 76 |
| Fluticasone Propionate | 75 |
| Levocetirizine Dihydrochloride | 68 |
| Ipratropium Bromide | 55 |
| Breo Ellipta Fluticasone/Vilanterol | 45 |
| Ventolin Hfa Albuterol Sulfate | 42 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Allergy & Immunology Physician Overview
How Thomas Scarborough, M.D. fits within the Allergy & Immunology Physician landscape nationally.
3,390
Allergy & Immunology Physician Providers in US
52
States with Allergy & Immunology Physician
764
Avg Claims per Provider
Thomas Scarborough, M.D.'s 1,389 claims are above the specialty average of 764.
Nearby Allergy & Immunology Physician Providers in Montana
Other clinicians with the same primary specialty enrolled in Montana, drawn from the same CMS NPPES roster as Scarborough.
Dr. Elaine Barbieri
MD
Great Falls, MT
Dr. Kathleen Davis
MD
Billings, MT
Dr. Ward Dewitt
MD
Missoula, MT
Dr. Michael Dicello
MD
Bozeman, MT
Dr. Mary Irene Feria
M.D.
Kalispell, MT
Compare Allergy & Immunology 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 Montana medical board, federal registration is not a license check. Credential verification guide
- Weigh a second option: compare this provider with a nearby Allergy & Immunology 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.
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Medical Specialties Explained
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Understanding Medicare Claims Data
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Frequently Asked Questions
What is Thomas Scarborough, M.D.'s specialty? ▼
Thomas Scarborough, M.D. specializes in Allergy & Immunology Physician and practices in Billings, Montana. Credentials: M.D..
How much does Thomas Scarborough, M.D. prescribe under Medicare Part D? ▼
In 2023, Thomas Scarborough, M.D. wrote 1,389 Medicare Part D claims totaling $491K in drug costs for 158 beneficiaries.
Where is Thomas Scarborough, M.D. located? ▼
Thomas Scarborough, M.D. is located at 3860 AVENUE B STE C, Billings, MT, 59102. Phone: (406) 237-5500.
What is Thomas Scarborough, M.D.'s NPI number? ▼
Thomas Scarborough, M.D.'s National Provider Identifier (NPI) is 1235194200, issued on 04/20/2006.
Does Thomas Scarborough, M.D. prescribe more brand-name or generic drugs? ▼
Thomas Scarborough, M.D.'s prescribing is 47% brand-name and 53% generic drugs by claim count, with $471K in brand drug costs.
How many Allergy & Immunology Physician providers are there in the US? ▼
There are 3,390 Allergy & Immunology Physician providers across 52 states in the US. The average Allergy & Immunology Physician provider writes 764 Medicare Part D claims per year.
What drugs does Thomas Scarborough, M.D. prescribe most often? ▼
Based on 2023 Medicare Part D data, Thomas Scarborough, 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 Thomas Scarborough, M.D. accept Medicare? ▼
Thomas Scarborough, M.D. appears in CMS Medicare data with 1,389 Part D claims and 158 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Thomas Scarborough, M.D.'s credentials? ▼
Thomas Scarborough, M.D.'s NPI is 1235194200 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.