2026 NPPES data Emergency Medical Services (Emergency Medicine) Physician NPI 1639119795 MD
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ANN MARIE BUCHANAN, MD

Emergency Medical Services (Emergency Medicine) Physician in AUSTIN, Texas. CMS National Plan and Provider Enumeration System profile including specialty classification, practice address, and Medicare prescribing data when reported.

Federal data — no proprietary rating. PlainDoctor publishes the actual CMS NPPES and Medicare records — NPI registration, specialty, practice location, and prescribing data — without a composite score or editorial opinion on top. Every field traces to a federal source.
Prescribing volume
216
Medicare Part D claims · 136 beneficiaries · Emergency Medical Services (Emergency Medicine) Physician avg: 394
What the federal data reveals: ANN MARIE BUCHANAN, MD is a Emergency Medical Services (Emergency Medicine) Physician ([object Object]) practicing in AUSTIN, Texas with a Medicare Part D prescribing footprint of 216 claims across 136 beneficiaries .

What stands out: ANN MARIE BUCHANAN, MD filed 216 Medicare Part D claims in 2023 across AUSTIN, Texas. Every figure on this page comes straight from federal CMS records, with no proprietary rating applied.

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).

ANN MARIE BUCHANAN, MD at a glance

Quality data not reported

NPI registry status

Active

Issued 06/07/2006

NPI 1639119795

Primary specialty

Emergency Medical Services (Emergency Medicine) Physician

Niche

3,616 US NPIs in this specialty

Medicare Part D claims

216 45% vs specialty avg

2023 prescription claims

Specialty avg: 394

Specialty distribution in Texas

How Emergency Medical Services (Emergency Medicine) Physician compares to other specialties among Texas providers

Texas providers

Emergency Medical Services (Emergency Medicine) Physician share within Texas

1. Emergency Medical Services (Emergency Medicine) Physician42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Emergency Medical Services (Emergency Medicine) Physician share within Texas

Specialty board-certification context

Estimated specialty board-certified rate — Emergency Medical Services (Emergency Medicine) Physician (ABMS / AOA reference)

Quality data not reported
Est. board-certified rate
78%
Emergency Medical Services (Emergency Medicine) Physician ABMS/AOA estimate

Est. board-certified rate (Emergency Medical Services (Emergency Medicine) Physician) — ABMS / AOA estimate

0%100%78%
Est. board-certified rate (Emergency Medical Services (Emergency Medicine) Physician) — ABMS / AOA estimate

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 is a Emergency Medical Services (Emergency Medicine) Physician provider practicing in AUSTIN, Texas, according to the CMS National Plan and Provider Enumeration System (NPPES). Credentials: MD. NPI: 1639119795. This profile includes practice location, specialty classification, and organizational affiliations from the CMS provider registry. Provider information is self-reported to CMS and updated monthly.

ANN MARIE BUCHANAN, MD appears in the CMS NPPES registry as a 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. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what BUCHANAN most recently submitted to CMS rather than a vetted directory listing, which is why patients should always confirm the practice is still at this location before scheduling.

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%. These figures capture only Medicare Part D — commercial insurance, Medicaid, and cash-pay prescriptions are not included, and any drug-beneficiary cell under 11 is suppressed by CMS for patient privacy.

Emergency Medical Services (Emergency Medicine) Physician is a narrow specialty nationwide, with 3,616 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

919 E 32ND ST
AUSTIN, TX 78705

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.

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.

Emergency Medical Services (Emergency Medicine) Physician Overview

How ANN MARIE BUCHANAN, MD fits within the Emergency Medical Services (Emergency Medicine) Physician landscape nationally.

3,616
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.

Compare Emergency Medical Services (Emergency Medicine) Physician nationally: see state-by-state distribution →

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 3,616 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

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