NPI registry status
Active
2026 NPPES data Gynecology Physician NPI 1548230931 M.D.
Verify on CMS → Anne O'Connor, M.D.
Gynecology Physician in St Johnsbury, Vermont.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 3,906 in Gynecology 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
103
Medicare Part D claims · 32 beneficiaries · Gynecology Physician avg: 295
Compiled from official public sources by the PlainDoctor editorial team.
What the federal data shows
Anne O'Connor, M.D. filed 103 Medicare Part D claims in 2023 as a Gynecology Physician in St Johnsbury, Vermont.
- 103
- 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.
Anne O'Connor, M.D.'s Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
103 35th percentile higher than 35% 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)
Anne O'Connor, 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 Anne O'Connor, M.D.?
Quality data not reportedPrimary specialty
Gynecology Physician
Medicare Part D claims
103 65% vs specialty avg
Specialty distribution in Vermont
How Gynecology Physician compares to other specialties among Vermont 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 Gynecology 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).
Anne O'Connor, M.D. appears in the CMS NPPES registry as a Gynecology Physician provider holding M.D. credentials at 1315 HOSPITAL DR, St Johnsbury, VT, 05819, with a listed phone of (802) 748-7300. NPI 1548230931 was issued on 01/26/2006.
Medicare Part D records for calendar year 2023 show 103 prescription claims written by this provider, covering 32 Medicare beneficiaries and totaling roughly $7K in drug spend.
Gynecology Physician is a narrow specialty nationwide, with 3,906 enrolled providers across 53 states and an average of 295 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 | 1548230931 |
|---|---|
| Specialty | Gynecology Physician |
| Credentials | M.D. |
| Gender | Female |
| NPI Issued | 01/26/2006 |
Medicare Part D Prescribing Data
CMS Medicare Part D prescriber-level data for calendar year 2023.
103
Total Claims
$7K
Total Drug Cost
32
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 177
- Total Day Supply
- 4,632
- Generic Drug Cost
- $7K
Patient Demographics
- Average Patient Age
- 67.1 years
- Avg HCC Risk Score
- 0.91
- Gender Split
- 100% female / 0% male
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
| Drug | Claims |
|---|---|
| Estradiol | 21 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Gynecology Physician Overview
How Anne O'Connor, M.D. fits within the Gynecology Physician landscape nationally.
3,906
Gynecology Physician Providers in US
53
States with Gynecology Physician
295
Avg Claims per Provider
Anne O'Connor, M.D.'s 103 claims are below the specialty average of 295.
Nearby Gynecology Physician Providers in Vermont
Other clinicians with the same primary specialty enrolled in Vermont, drawn from the same CMS NPPES roster as O'Connor.
Dr. Brigitte Barrette
M.D.
Burlington, VT
Dr. Diane Charland
M.D.
Williston, VT
Dr. Jane Conolly
MD
South Burlington, VT
Dr. Sarah Dahl
MD
Bennington, VT
Dr. Gamal Eltabbakh
M.D.
South Burlington, VT
Compare Gynecology 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 Vermont medical board, federal registration is not a license check. Credential verification guide
- Weigh a second option: compare this provider with a nearby Gynecology 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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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 Vermont
Frequently Asked Questions
What is Anne O'Connor, M.D.'s specialty? ▼
Anne O'Connor, M.D. specializes in Gynecology Physician and practices in St Johnsbury, Vermont. Credentials: M.D..
How much does Anne O'Connor, M.D. prescribe under Medicare Part D? ▼
In 2023, Anne O'Connor, M.D. wrote 103 Medicare Part D claims totaling $7K in drug costs for 32 beneficiaries.
Where is Anne O'Connor, M.D. located? ▼
Anne O'Connor, M.D. is located at 1315 HOSPITAL DR, St Johnsbury, VT, 05819. Phone: (802) 748-7300.
What is Anne O'Connor, M.D.'s NPI number? ▼
Anne O'Connor, M.D.'s National Provider Identifier (NPI) is 1548230931, issued on 01/26/2006.
How many Gynecology Physician providers are there in the US? ▼
There are 3,906 Gynecology Physician providers across 53 states in the US. The average Gynecology Physician provider writes 295 Medicare Part D claims per year.
What drugs does Anne O'Connor, M.D. prescribe most often? ▼
Based on 2023 Medicare Part D data, Anne O'Connor, M.D.'s most frequently prescribed drugs include Estradiol. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Anne O'Connor, M.D. accept Medicare? ▼
Anne O'Connor, M.D. appears in CMS Medicare data with 103 Part D claims and 32 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Anne O'Connor, M.D.'s credentials? ▼
Anne O'Connor, M.D.'s NPI is 1548230931 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.
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.