NPI registry status
Active
2026 NPPES data Gynecology Physician NPI 1891740775 M.D.
Verify on CMS → Diane Charland, M.D.
Gynecology Physician in Williston, 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 3,912 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
559
Medicare Part D claims · 197 beneficiaries · Gynecology Physician avg: 319
Generic prescribing
82%
generic claims · 18% brand-name · higher generic rates reduce patient out-of-pocket costs
Source: CMS Medicare Part D Prescriber Public Use File, 2024
What the federal data shows
Diane Charland, M.D. filed 559 Medicare Part D claims in 2024 as a Gynecology Physician in Williston, Vermont, prescribing 82% generic.
- 559
- Part D claims, 2024
- 82%
- generic prescribing
- Likely
- board-certified (heuristic)
- ≥65th
- pct by Part D claim volume (lower-bound band)
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.
Federal trust snapshot
What official records show about Diane Charland, M.D.
Federal records show an active NPI with Medicare Part D prescribing activity — verifiable registry data, not a proprietary rating.
- Verified
NPI registry status
Active listing in the CMS National Provider Identifier Registry (NPI 1891740775), first enumerated 05/22/2006.
Source: CMS NPPES
- Reported
Medicare Part D participation
Filed 559 Medicare Part D prescription claims in the 2023 CMS public use file — indicates active Medicare prescribing participation.
Source: CMS Part D Prescriber PUF
- Reported
Board certification signal
Heuristic suggests board-certified status based on ABMS-eligible specialty taxonomy plus active CMS participation signals — not a direct ABMS verification.
- Reported
Hospital affiliations
1 CMS Care Compare hospital affiliation on record — practice footprint from the Doctors and Clinicians file.
Source: CMS Care Compare
- Not in federal data
Individual sanction lookup
PlainDoctor does not publish per-provider disciplinary determinations. Confirm current license and any individual actions through the state medical board or FSMB verification service.
Source: State medical board / FSMB
This trust snapshot summarizes only what appears in federal CMS/NPPES public records. It is not a composite score, star rating, patient review, or clinical recommendation. PlainDoctor never fabricates reviews or AggregateRating schema.
CMS NPPES provider registry desk
NPI 1891740775 · Gynecology Physician
NPI-10 · ENUM-LEGACY · TAX-NARROW · RX-LIGHT · BOOK-THIN · PHOTO-ENUM
- NPI-10 1891740775
- ENUM-LEGACY 2006
- TAX-NARROW 3,912
- RX-LIGHT 559
- BOOK-THIN 7 in Vermont
- PHOTO-ENUM John Wood, M.D. · 2006
Diane Charland, M.D.'s Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2024, across all CMS prescribers nationally
559 ≥ 65th percentile 65% of 1,416,883 prescribers are in lower value bands
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.
The percentile is a conservative 100-claim band: it counts only prescribers in lower claim-volume bands. Medicare Part D claim volume is activity context, not a quality measure or recommendation. See methodology § corpus placement.
Source CMS Medicare Part D Prescriber Public Use File · 2024
✓
Board certification likely (heuristic, not verified)
Diane Charland, M.D. practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + 1 hospital affiliation - signals consistent with board-certified status. For verified board certification, see CertificationMatters.org (the official ABMS public lookup).
What does the federal data show about Diane Charland, M.D.?
Quality data not reportedPrimary specialty
Gynecology Physician
Medicare Part D claims
559 75% 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).
Practice Address
Provider Details
| NPI | 1891740775 |
|---|---|
| Specialty | Gynecology Physician |
| Credentials | M.D. |
| Gender | Female |
| NPI Issued | 05/22/2006 |
Hospital and facility affiliations
Facilities where Diane Charland, M.D. bills Medicare from. Star ratings (1-5) are CMS Hospital Compare's "Hospital overall rating" - a composite of mortality, readmission, patient experience, safety, timely care, and efficient use of medical imaging measures. Source: CMS Care Compare.
University OF Vermont Medical Center Inc
Burlington, VT
Affiliations sourced from CMS Doctors and Clinicians National Downloadable File; hospital ratings from CMS Hospital General Information dataset (cross-referenced by facility name + state).
Brand vs generic prescribing mix · Typical
Diane Charland, M.D. - brand share 18.0%
Gynecology Physician average
18% brand-name claims vs 82% generic, on 559 2024 Medicare Part D claims.
The federal Medicare Part D Generic Dispensing Rate national benchmark sits near 90% generic / 10% brand for primary-care prescribers, per CMS Office of the Actuary 2024 estimates. Higher brand share is common in specialty prescribing where generic equivalents are not available.
Medicare Part D Prescribing Data
CMS Medicare Part D prescriber-level data for calendar year 2024.
559
Total Claims
$86K
Total Drug Cost
197
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 1,258.267
- Total Day Supply
- 34,916
- Brand vs Generic
- 18% brand / 82% generic
- Brand Drug Cost
- $56K
- Generic Drug Cost
- $30K
- Antibiotic Claims
- 108
Patient Demographics
- Average Patient Age
- 74.2 years
- Avg HCC Risk Score
- 0.97
- Gender Split
- 100% female / 0% male
- Age Distribution
- <65: 12, 65-74: 90, 75-84: 71, 85+: 24
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2024. Based on Medicare Part D data only.
What Diane Charland, M.D. prescribes most
Top Medicare Part D drugs by claim count, 2024
- Estradiol
Estradiol
220 claims
- Myrbetriq 65
Myrbetriq
65 claims
- Nitrofurantoin Mon… 52
Nitrofurantoin Mono-Macro
52 claims
- Oxybutynin Chlorid… 38
Oxybutynin Chloride Er
38 claims
- Tolterodine Tartra… 32
Tolterodine Tartrate Er
32 claims
- Cefpodoxime Proxetil 28
Cefpodoxime Proxetil
28 claims
- Gemtesa 15
Gemtesa
15 claims
- Mirabegron Er 13
Mirabegron Er
13 claims
| Drug | Claims |
|---|---|
| Estradiol | 220 |
| Myrbetriq Mirabegron | 65 |
| Nitrofurantoin Mono-Macro Nitrofurantoin Monohyd/M-Cryst | 52 |
| Oxybutynin Chloride Er Oxybutynin Chloride | 38 |
| Tolterodine Tartrate Er Tolterodine Tartrate | 32 |
| Cefpodoxime Proxetil | 28 |
| Gemtesa Vibegron | 15 |
| Mirabegron Er Mirabegron | 13 |
| Sulfamethoxazole-Trimethoprim Sulfamethoxazole/Trimethoprim | 13 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Gynecology Physician Overview
How Diane Charland, M.D. fits within the Gynecology Physician landscape nationally.
3,912
Gynecology Physician Providers in US
53
States with Gynecology Physician
319
Avg Claims per Provider
Diane Charland, M.D.'s 559 claims are above the specialty average of 319.
Nationwide Gynecology Physician peers with similar MIPS or enrollment year
Two federal-record peer sets for Charland, both outside Vermont so the neighborhoods are not geographic containment.
Same NPPES enumeration year (2006)
Same-specialty clinicians who entered the NPI registry in the same calendar year, outside this state.
Nearby Gynecology Physician Providers in Vermont
Other clinicians with the same primary specialty enrolled in Vermont, drawn from the same CMS NPPES roster as Charland.
One of 7 Gynecology Physician providers enrolled in Vermont, 5 are shown here.
Dr. Brigitte Barrette
M.D.
Burlington, VT
Dr. Jane Conolly
MD
South Burlington, VT
Dr. Sarah Dahl
MD
Bennington, VT
Dr. Gamal Eltabbakh
M.D.
South Burlington, VT
Dr. Anne O'Connor
M.D.
St Johnsbury, VT
Compare Gynecology Physician nationally: see state-by-state distribution →
Frequently Asked Questions
What is Diane Charland, M.D.'s specialty? ▼
Diane Charland, M.D. specializes in Gynecology Physician and practices in Williston, Vermont. Credentials: M.D..
How much does Diane Charland, M.D. prescribe under Medicare Part D? ▼
In 2024, Diane Charland, M.D. wrote 559 Medicare Part D claims totaling $86K in drug costs for 197 beneficiaries.
Where is Diane Charland, M.D. located? ▼
Diane Charland, M.D. is located at 71 KNIGHT LN, Williston, VT, 05495. Phone: (802) 872-7001.
What is Diane Charland, M.D.'s NPI number? ▼
Diane Charland, M.D.'s National Provider Identifier (NPI) is 1891740775, issued on 05/22/2006.
Does Diane Charland, M.D. prescribe more brand-name or generic drugs? ▼
Diane Charland, M.D.'s prescribing is 18% brand-name and 82% generic drugs by claim count, with $56K in brand drug costs.
How many Gynecology Physician providers are there in the US? ▼
There are 3,912 Gynecology Physician providers across 53 states in the US. The average Gynecology Physician provider writes 319 Medicare Part D claims per year.
What drugs does Diane Charland, M.D. prescribe most often? ▼
Based on 2024 Medicare Part D data, Diane Charland, M.D.'s most frequently prescribed drugs include Estradiol, Myrbetriq, Nitrofurantoin Mono-Macro. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Diane Charland, M.D. accept Medicare? ▼
Diane Charland, M.D. appears in CMS Medicare data with 559 Part D claims and 197 Medicare beneficiaries in 2024. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Diane Charland, M.D.'s credentials? ▼
Diane Charland, M.D.'s NPI is 1891740775 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 (2024). 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 August 2026 (NPPES) / 2024 (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
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 August 2026.