2026 NPPES data Gynecology Physician NPI 1548230931 M.D.
Verify on CMS →

ANNE O'CONNOR, M.D.

Gynecology Physician in ST JOHNSBURY, Vermont. 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
103
Medicare Part D claims · 32 beneficiaries · Gynecology Physician avg: 295
What the federal data reveals: ANNE O'CONNOR, M.D. is a Gynecology Physician ([object Object]) practicing in ST JOHNSBURY, Vermont with a Medicare Part D prescribing footprint of 103 claims across 32 beneficiaries .

What stands out: ANNE O'CONNOR, M.D. filed 103 Medicare Part D claims in 2023 across ST JOHNSBURY, Vermont. Every figure on this page comes straight from federal CMS records, with no proprietary rating applied.

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).

ANNE O'CONNOR, M.D. at a glance

Quality data not reported

NPI registry status

Active

Issued 01/26/2006

NPI 1548230931

Primary specialty

Gynecology Physician

Niche

3,902 US NPIs in this specialty

Medicare Part D claims

103 65% vs specialty avg

2023 prescription claims

Specialty avg: 295

Specialty distribution in Vermont

How Gynecology Physician compares to other specialties among Vermont providers

Vermont providers

Gynecology Physician share within Vermont

1. Gynecology Physician42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Gynecology Physician share within Vermont

Specialty board-certification context

Estimated specialty board-certified rate — Gynecology Physician (ABMS / AOA reference)

Quality data not reported
Est. board-certified rate
78%
Gynecology Physician ABMS/AOA estimate

Est. board-certified rate (Gynecology Physician) — ABMS / AOA estimate

0%100%78%
Est. board-certified rate (Gynecology 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).

ANNE O'CONNOR, M.D. is a Gynecology Physician provider practicing in ST JOHNSBURY, Vermont, according to the CMS National Plan and Provider Enumeration System (NPPES). Credentials: M.D.. NPI: 1548230931. 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.

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. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what O'CONNOR 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 103 prescription claims written by this provider, covering 32 Medicare beneficiaries and totaling roughly $7K in drug spend. 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.

Gynecology Physician is a narrow specialty nationwide, with 3,902 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

1315 HOSPITAL DR
ST JOHNSBURY, VT 05819

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.

3,902
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.

Compare Gynecology Physician nationally: see state-by-state distribution →

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 3,902 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

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