NPI registry status
Active
2026 NPPES data Emergency Medical Services (Emergency Medicine) Physician NPI 1639119795 MD
Verify on CMS → Ann Marie Buchanan, MD
Emergency Medical Services (Emergency Medicine) Physician in Austin, Texas.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 3,618 in Emergency Medical Services (Emergency 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
216
Medicare Part D claims · 136 beneficiaries · Emergency Medical Services (Emergency Medicine) Physician avg: 394
Compiled from official public sources by the PlainDoctor editorial team.
What the federal data shows
Ann Marie Buchanan, MD filed 216 Medicare Part D claims in 2023 as a Emergency Medical Services (Emergency Medicine) Physician in Austin, Texas.
- 216
- 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.
Ann Marie Buchanan, MD's Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
216 49th percentile higher than 49% 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)
Ann Marie Buchanan, 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 Ann Marie Buchanan, MD?
Quality data not reportedPrimary specialty
Emergency Medical Services (Emergency Medicine) Physician
Medicare Part D claims
216 45% vs specialty avg
Specialty distribution in Texas
How Emergency Medical Services (Emergency Medicine) Physician compares to other specialties among Texas 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 Emergency Medical Services (Emergency 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).
Ann Marie Buchanan, MD appears in the CMS NPPES registry as an Emergency Medical Services (Emergency Medicine) Physician provider holding MD credentials at 919 E 32ND ST, Austin, TX, 78705, with a listed phone of (512) 476-7111. NPI 1639119795 was issued on 06/07/2006.
Medicare Part D records for calendar year 2023 show 216 prescription claims written by this provider, covering 136 Medicare beneficiaries and totaling roughly $8K in drug spend, with an opioid prescribing rate of 12.5%.
Emergency Medical Services (Emergency Medicine) Physician is a narrow specialty nationwide, with 3,618 enrolled providers across 55 states and an average of 394 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 | 1639119795 |
|---|---|
| Specialty | Emergency Medical Services (Emergency Medicine) Physician |
| Credentials | MD |
| Gender | Female |
| NPI Issued | 06/07/2006 |
License & disciplinary context - Texas TMB 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 ~77K Texas medical licensees in 2023 - they are NOT specific to Ann Marie Buchanan, MD. To verify Ann Marie Buchanan, MD's current license status, search the TMB public license lookup directly, or check the Federation of State Medical Boards (FSMB) verification service.
344
Total board actions, Texas 2023
Across 334 cases
4.47
Actions per 1,000 licensees
Texas statewide rate
probation
Most common action type
94 cases
TMB 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 Texas 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.
216
Total Claims
$8K
Total Drug Cost
136
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 217
- Total Day Supply
- 1,954
- Generic Drug Cost
- $2K
- Opioid Claims
- 27 (12.5% rate)
- Antibiotic Claims
- 40
Patient Demographics
- Average Patient Age
- 66.8 years
- Avg HCC Risk Score
- 1.68
- Gender Split
- 60% female / 40% male
- Age Distribution
- <65: 44, 65-74: 57, 75-84: N/A, 85+: N/A
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Ann Marie Buchanan, MD prescribes most
Top Medicare Part D drugs by claim count, 2023
- Cyclobenzaprine Hcl
Cyclobenzaprine Hcl
25 claims
- Hydrocodone-Acetam…
Hydrocodone-Acetaminophen
25 claims
- Cephalexin
Cephalexin
24 claims
- Methylprednisolone
Methylprednisolone
16 claims
- Ondansetron Hcl
Ondansetron Hcl
12 claims
| Drug | Claims |
|---|---|
| Cyclobenzaprine Hcl | 25 |
| Hydrocodone-Acetaminophen Hydrocodone/Acetaminophen | 25 |
| Cephalexin | 24 |
| Methylprednisolone | 16 |
| Ondansetron Hcl | 12 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
More Emergency Medical Services (Emergency Medicine) Physician in TX →
All providers in Texas →
Compare specialties →
Emergency Medical Services (Emergency Medicine) Physician Overview
How Ann Marie Buchanan, MD fits within the Emergency Medical Services (Emergency Medicine) Physician landscape nationally.
3,618
Emergency Medical Services (Emergency Medicine) Physician Providers in US
55
States with Emergency Medical Services (Emergency Medicine) Physician
394
Avg Claims per Provider
Ann Marie Buchanan, MD's 216 claims are below the specialty average of 394.
Nearby Emergency Medical Services (Emergency Medicine) Physician Providers in Texas
Other clinicians with the same primary specialty enrolled in Texas, drawn from the same CMS NPPES roster as Buchanan.
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 Texas medical board, federal registration is not a license check. Credential verification guide
- Weigh a second option: compare this provider with a nearby Emergency Medical Services (Emergency 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
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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 Texas
Frequently Asked Questions
What is Ann Marie Buchanan, MD's specialty? ▼
Ann Marie Buchanan, MD specializes in Emergency Medical Services (Emergency Medicine) Physician and practices in Austin, Texas. Credentials: MD.
How much does Ann Marie Buchanan, MD prescribe under Medicare Part D? ▼
In 2023, Ann Marie Buchanan, MD wrote 216 Medicare Part D claims totaling $8K in drug costs for 136 beneficiaries.
Where is Ann Marie Buchanan, MD located? ▼
Ann Marie Buchanan, MD is located at 919 E 32ND ST, Austin, TX, 78705. Phone: (512) 476-7111.
What is Ann Marie Buchanan, MD's NPI number? ▼
Ann Marie Buchanan, MD's National Provider Identifier (NPI) is 1639119795, issued on 06/07/2006.
Does Ann Marie Buchanan, MD prescribe opioids? ▼
Yes, Ann Marie Buchanan, MD had 27 opioid claims in 2023 with an opioid prescribing rate of 12.5%.
How many Emergency Medical Services (Emergency Medicine) Physician providers are there in the US? ▼
There are 3,618 Emergency Medical Services (Emergency Medicine) Physician providers across 55 states in the US. The average Emergency Medical Services (Emergency Medicine) Physician provider writes 394 Medicare Part D claims per year.
What drugs does Ann Marie Buchanan, MD prescribe most often? ▼
Based on 2023 Medicare Part D data, Ann Marie Buchanan, MD's most frequently prescribed drugs include Cyclobenzaprine Hcl, Hydrocodone-Acetaminophen, Cephalexin. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Ann Marie Buchanan, MD accept Medicare? ▼
Ann Marie Buchanan, MD appears in CMS Medicare data with 216 Part D claims and 136 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Ann Marie Buchanan, MD's credentials? ▼
Ann Marie Buchanan, MD's NPI is 1639119795 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 (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.
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 May 2026.