NPI registry status
Active
2026 NPPES data Internal Medicine Physician NPI 1538273966 M.D.
Verify on CMS → Alan Segal, M.D.
Internal Medicine Physician in Buffalo, New York.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 172,858 in Internal Medicine 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
2K
Medicare Part D claims · 64 beneficiaries · Internal Medicine Physician avg: 3K
Compiled from official public sources by the PlainDoctor editorial team.
What the federal data shows
Alan Segal, M.D. filed 2,242 Medicare Part D claims in 2023 as a Internal Medicine Physician in Buffalo, New York.
- 2K
- 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.
Alan Segal, M.D.'s Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
2,242 Top 15% higher than 85% 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)
Alan Segal, 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 Alan Segal, M.D.?
Quality data not reportedPrimary specialty
Internal Medicine Physician
Medicare Part D claims
2,242 17% vs specialty avg
Specialty distribution in New York
How Internal Medicine Physician compares to other specialties among New York 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 Internal Medicine 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).
Alan Segal, M.D. appears in the CMS NPPES registry as a Internal Medicine Physician provider holding M.D. credentials at 1 GATES CIR APT 312, Buffalo, NY, 14209, with a listed phone of (716) 322-0100. NPI 1538273966 was issued on 08/19/2006.
Medicare Part D records for calendar year 2023 show 2,242 prescription claims written by this provider, covering 64 Medicare beneficiaries and totaling roughly $190K in drug spend, with an opioid prescribing rate of 6.6%.
Internal Medicine Physician is a high-volume specialty nationwide, with 172,858 enrolled providers across 56 states and an average of 2,716 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 | 1538273966 |
|---|---|
| Specialty | Internal Medicine Physician |
| Credentials | M.D. |
| Gender | Male |
| NPI Issued | 08/19/2006 |
License & disciplinary context - New York NYSBPMC 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 ~100K New York medical licensees in 2023 - they are NOT specific to Alan Segal, M.D.. To verify Alan Segal, M.D.'s current license status, search the NYSBPMC public license lookup directly, or check the Federation of State Medical Boards (FSMB) verification service.
312
Total board actions, New York 2023
Across 302 cases
3.12
Actions per 1,000 licensees
New York statewide rate
probation
Most common action type
89 cases
NYSBPMC 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 New York disciplinary trends page. Cross-checked against FSMB U.S. Medical Regulatory Trends.
Medicare Part D Prescribing Data
CMS Medicare Part D prescriber-level data for calendar year 2023.
2,242
Total Claims
$190K
Total Drug Cost
64
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 2,257
- Total Day Supply
- 50,791
- Generic Drug Cost
- $77K
- Opioid Claims
- 147 (6.6% rate)
- Antibiotic Claims
- 42
Patient Demographics
- Average Patient Age
- 76.3 years
- Avg HCC Risk Score
- 2.53
- Gender Split
- 55% female / 45% male
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Alan Segal, M.D. prescribes most
Top Medicare Part D drugs by claim count, 2023
- Atorvastatin Calcium
Atorvastatin Calcium
140 claims
- Amlodipine Besylate
Amlodipine Besylate
124 claims
- Eliquis
Eliquis
93 claims
- Lisinopril
Lisinopril
79 claims
- Warfarin Sodium
Warfarin Sodium
79 claims
- Famotidine
Famotidine
59 claims
- Potassium Chloride
Potassium Chloride
56 claims
- Oxycodone-Acetamin… 55
Oxycodone-Acetaminophen
55 claims
| Drug | Claims |
|---|---|
| Atorvastatin Calcium | 140 |
| Amlodipine Besylate | 124 |
| Eliquis Apixaban | 93 |
| Lisinopril | 79 |
| Warfarin Sodium | 79 |
| Famotidine | 59 |
| Potassium Chloride | 56 |
| Oxycodone-Acetaminophen Oxycodone Hcl/Acetaminophen | 55 |
| Pantoprazole Sodium | 54 |
| Duloxetine Hcl | 51 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Internal Medicine Physician Overview
How Alan Segal, M.D. fits within the Internal Medicine Physician landscape nationally.
172,858
Internal Medicine Physician Providers in US
56
States with Internal Medicine Physician
2,716
Avg Claims per Provider
Alan Segal, M.D.'s 2,242 claims are below the specialty average of 2,716.
Nearby Internal Medicine Physician Providers in New York
Other clinicians with the same primary specialty enrolled in New York, drawn from the same CMS NPPES roster as Segal.
Dr. Deborah Aanonsen
D.O.
Staten Island, NY
Dr. Nivedita Aanur
M.D.
New York, NY
Dr. Jay Aaron
MD
Great Neck, NY
Dr. Justin Aaron
MD
New York, NY
Ahmad Abadi
Poughkeepsie, NY
Compare Internal Medicine 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 New York medical board, federal registration is not a license check. Credential verification guide
- Weigh a second option: compare this provider with a nearby Internal Medicine 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 New York
Frequently Asked Questions
What is Alan Segal, M.D.'s specialty? ▼
Alan Segal, M.D. specializes in Internal Medicine Physician and practices in Buffalo, New York. Credentials: M.D..
How much does Alan Segal, M.D. prescribe under Medicare Part D? ▼
In 2023, Alan Segal, M.D. wrote 2,242 Medicare Part D claims totaling $190K in drug costs for 64 beneficiaries.
Where is Alan Segal, M.D. located? ▼
Alan Segal, M.D. is located at 1 GATES CIR APT 312, Buffalo, NY, 14209. Phone: (716) 322-0100.
What is Alan Segal, M.D.'s NPI number? ▼
Alan Segal, M.D.'s National Provider Identifier (NPI) is 1538273966, issued on 08/19/2006.
Does Alan Segal, M.D. prescribe opioids? ▼
Yes, Alan Segal, M.D. had 147 opioid claims in 2023 with an opioid prescribing rate of 6.6%.
How many Internal Medicine Physician providers are there in the US? ▼
There are 172,858 Internal Medicine Physician providers across 56 states in the US. The average Internal Medicine Physician provider writes 2,716 Medicare Part D claims per year.
What drugs does Alan Segal, M.D. prescribe most often? ▼
Based on 2023 Medicare Part D data, Alan Segal, M.D.'s most frequently prescribed drugs include Atorvastatin Calcium, Amlodipine Besylate, Eliquis. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Alan Segal, M.D. accept Medicare? ▼
Alan Segal, M.D. appears in CMS Medicare data with 2,242 Part D claims and 64 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Alan Segal, M.D.'s credentials? ▼
Alan Segal, M.D.'s NPI is 1538273966 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.