NPI registry status
Active
2026 NPPES data Ophthalmology Physician NPI 1558365544 M.D.
Verify on CMS → Thomas Allison, M.D.
Ophthalmology Physician in Birmingham, Alabama.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 22,090 in Ophthalmology 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
25
Medicare Part D claims · Ophthalmology Physician avg: 1K
Compiled from official public sources by the PlainDoctor editorial team.
What the federal data shows
Thomas Allison, M.D. filed 25 Medicare Part D claims in 2023 as a Ophthalmology Physician in Birmingham, Alabama.
- 25
- Part D claims, 2023
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 Allison, M.D.'s Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
25 0th percentile higher than 0% 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 Allison, 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 Allison, M.D.?
Quality data not reportedPrimary specialty
Ophthalmology Physician
Medicare Part D claims
25 98% vs specialty avg
Specialty distribution in Alabama
How Ophthalmology Physician compares to other specialties among Alabama 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 Ophthalmology 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 Allison, M.D. appears in the CMS NPPES registry as a Ophthalmology Physician provider holding M.D. credentials at 2700 10TH AVE S, Birmingham, AL, 35205, with a listed phone of (205) 933-0439. NPI 1558365544 was issued on 06/08/2005.
Medicare Part D records for calendar year 2023 show 25 prescription claims written by this provider, covering N/A Medicare beneficiaries and totaling roughly $704 in drug spend.
Ophthalmology Physician is a mid-sized specialty nationwide, with 22,090 enrolled providers across 56 states and an average of 1,420 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 | 1558365544 |
|---|---|
| Specialty | Ophthalmology Physician |
| Credentials | M.D. |
| Gender | Male |
| NPI Issued | 06/08/2005 |
Medicare Part D Prescribing Data
CMS Medicare Part D prescriber-level data for calendar year 2023.
25
Total Claims
$704
Total Drug Cost
N/A
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 39
- Total Day Supply
- 951
- Generic Drug Cost
- $606
Patient Demographics
- Average Patient Age
- 71.3 years
- Avg HCC Risk Score
- 0.50
Ophthalmology Physician Overview
How Thomas Allison, M.D. fits within the Ophthalmology Physician landscape nationally.
22,090
Ophthalmology Physician Providers in US
56
States with Ophthalmology Physician
1,420
Avg Claims per Provider
Thomas Allison, M.D.'s 25 claims are below the specialty average of 1,420.
Nearby Ophthalmology Physician Providers in Alabama
Other clinicians with the same primary specialty enrolled in Alabama, drawn from the same CMS NPPES roster as Allison.
Dr. Michael Albert
MD
Birmingham, AL
Dr. Matthew Albright
MD
Birmingham, AL
Dr. Aric Aldridge
M.D.
Dothan, AL
Dr. Melton Ambrose
M.D.
Killen, AL
Dr. Shivam Amin
MD
Montgomery, AL
Compare Ophthalmology 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 Alabama medical board, federal registration is not a license check. Credential verification guide
- Weigh a second option: compare this provider with a nearby Ophthalmology 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
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How to Find a Doctor
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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 Alabama
Frequently Asked Questions
What is Thomas Allison, M.D.'s specialty? ▼
Thomas Allison, M.D. specializes in Ophthalmology Physician and practices in Birmingham, Alabama. Credentials: M.D..
How much does Thomas Allison, M.D. prescribe under Medicare Part D? ▼
In 2023, Thomas Allison, M.D. wrote 25 Medicare Part D claims totaling $704 in drug costs for N/A beneficiaries.
Where is Thomas Allison, M.D. located? ▼
Thomas Allison, M.D. is located at 2700 10TH AVE S, Birmingham, AL, 35205. Phone: (205) 933-0439.
What is Thomas Allison, M.D.'s NPI number? ▼
Thomas Allison, M.D.'s National Provider Identifier (NPI) is 1558365544, issued on 06/08/2005.
How many Ophthalmology Physician providers are there in the US? ▼
There are 22,090 Ophthalmology Physician providers across 56 states in the US. The average Ophthalmology Physician provider writes 1,420 Medicare Part D claims per year.
Does Thomas Allison, M.D. accept Medicare? ▼
Thomas Allison, M.D. appears in CMS Medicare data with 25 Part D claims and N/A Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Thomas Allison, M.D.'s credentials? ▼
Thomas Allison, M.D.'s NPI is 1558365544 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.