2026 NPPES data Obstetrics & Gynecology Physician NPI 1740384379 M.D.
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CORINNE DE CHOLNOKY, M.D.

Obstetrics & Gynecology Physician in STAMFORD, Connecticut. 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
437
Medicare Part D claims · 138 beneficiaries · Obstetrics & Gynecology Physician avg: 179
Industry payments
$135.73
5 payments · CMS Open Payments (Sunshine Act)

What the federal data shows

CORINNE DE CHOLNOKY, M.D. filed 437 Medicare Part D claims in 2023 as a Obstetrics & Gynecology Physician in STAMFORD, Connecticut.

437
Part D claims, 2023
$135.73
industry payments (Sunshine Act)

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.

CORINNE DE CHOLNOKY, M.D.'s Medicare Part D volume vs every U.S. prescriber

Total Medicare Part D claims, 2023 — across all CMS prescribers nationally

437 Top 38% higher than 62% of 1,370,886 prescribers

0–200: 670,926 prescribers (49%). Below this entry. 200–400: 182,923 prescribers (13%). Below this entry. 400–600: 90,619 prescribers (7%). This entry sits in this band. 600–800: 56,224 prescribers (4%). Above this entry. 800–1,000: 40,919 prescribers (3%). Above this entry. 1,000–1,200: 31,827 prescribers (2%). Above this entry. 1,200–1,400: 26,224 prescribers (2%). Above this entry. 1,400–1,600: 21,710 prescribers (2%). Above this entry. 1,600–1,800: 19,072 prescribers (1%). Above this entry. 1,800–2,000: 16,451 prescribers (1%). Above this entry. 2,000–2,200: 213,991 prescribers (16%). Above this entry. This provider 0 2K+ every Part D prescriber (claims/yr), bucketed by value

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)

CORINNE DE CHOLNOKY, 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 CORINNE DE CHOLNOKY, M.D.?

Quality data not reported

NPI registry status

Active

Issued 09/12/2006

NPI 1740384379

Primary specialty

Obstetrics & Gynecology Physician

Mid-sized

44,313 US NPIs in this specialty

Medicare Part D claims

437 144% vs specialty avg

2023 prescription claims

Specialty avg: 179

Specialty distribution in Connecticut

How Obstetrics & Gynecology Physician compares to other specialties among Connecticut providers

Connecticut providers

Obstetrics & Gynecology Physician share within Connecticut

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

Specialty board-certification context

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

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

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

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

CORINNE DE CHOLNOKY, M.D. appears in the CMS NPPES registry as a Obstetrics & Gynecology Physician provider holding M.D. credentials at 166 W BROAD ST, STAMFORD, CT, 06902, with a listed phone of (203) 325-9710. NPI 1740384379 was issued on 09/12/2006. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what DE CHOLNOKY 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 437 prescription claims written by this provider, covering 138 Medicare beneficiaries and totaling roughly $35K 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.

Obstetrics & Gynecology Physician is a mid-sized specialty nationwide, with 44,313 enrolled providers across 56 states and an average of 179 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

166 W BROAD ST
STAMFORD, CT 06902

Provider Details

NPI 1740384379
Specialty Obstetrics & Gynecology Physician
Credentials M.D.
Gender Female
NPI Issued 09/12/2006

Industry payments received (2024) — CMS Open Payments transparency data

The federal Physician Payments Sunshine Act (part of the Affordable Care Act) requires drug and medical-device manufacturers + group purchasing organizations to publicly report payments and other transfers of value to physicians and teaching hospitals. The data below covers 2024 for CORINNE DE CHOLNOKY, M.D.. Source: openpaymentsdata.cms.gov.

Total received

$136

Largest payer

Exact Sciences Corporation

Most common payment type

Food and Beverage

Industry payments are not necessarily indicators of bias — they include research funding, consulting fees for evidence-based work, royalties for inventions, food at conferences, and similar items. The disclosure exists for transparency. Read our methodology for how we interpret this data.

Medicare Part D Prescribing Data

CMS Medicare Part D prescriber-level data for calendar year 2023.

437
Total Claims
$35K
Total Drug Cost
138
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
802
Total Day Supply
20,640
Generic Drug Cost
$20K
Antibiotic Claims
41

Patient Demographics

Average Patient Age
72.6 years
Avg HCC Risk Score
0.63

Top Prescribed Drugs (Medicare Part D)

Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.

What CORINNE DE CHOLNOKY, M.D. prescribes most

Top Medicare Part D drugs by claim count, 2023

claims
Source CMS Medicare Part D Prescriber Public Use File As of 2023
Drug Claims
Estradiol
92
Fluconazole
45
Clotrimazole-Betamethasone
Clotrimazole/Betamethasone Dip
35
Valacyclovir
Valacyclovir Hcl
24
Estradiol (Once Weekly)
Estradiol
19
Yuvafem
Estradiol
19
Ciprofloxacin Hcl
14
Estradiol (Twice Weekly)
Estradiol
13
Clobetasol Propionate
11
Microgestin Fe
Norethindrone-E.Estradiol-Iron
11

* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.

Obstetrics & Gynecology Physician Overview

How CORINNE DE CHOLNOKY, M.D. fits within the Obstetrics & Gynecology Physician landscape nationally.

44,313
Obstetrics & Gynecology Physician Providers in US
56
States with Obstetrics & Gynecology Physician
179
Avg Claims per Provider

CORINNE DE CHOLNOKY, M.D.'s 437 claims are above the specialty average of 179.

Nearby Obstetrics & Gynecology Physician Providers in Connecticut

Other clinicians with the same primary specialty enrolled in Connecticut, drawn from the same CMS NPPES roster as DE CHOLNOKY.

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

Frequently Asked Questions

What is CORINNE DE CHOLNOKY, M.D.'s specialty?
CORINNE DE CHOLNOKY, M.D. specializes in Obstetrics & Gynecology Physician and practices in STAMFORD, Connecticut. Credentials: M.D..
How much does CORINNE DE CHOLNOKY, M.D. prescribe under Medicare Part D?
In 2023, CORINNE DE CHOLNOKY, M.D. wrote 437 Medicare Part D claims totaling $35K in drug costs for 138 beneficiaries.
Where is CORINNE DE CHOLNOKY, M.D. located?
CORINNE DE CHOLNOKY, M.D. is located at 166 W BROAD ST, STAMFORD, CT, 06902. Phone: (203) 325-9710.
What is CORINNE DE CHOLNOKY, M.D.'s NPI number?
CORINNE DE CHOLNOKY, M.D.'s National Provider Identifier (NPI) is 1740384379, issued on 09/12/2006.
How many Obstetrics & Gynecology Physician providers are there in the US?
There are 44,313 Obstetrics & Gynecology Physician providers across 56 states in the US. The average Obstetrics & Gynecology Physician provider writes 179 Medicare Part D claims per year.
What drugs does CORINNE DE CHOLNOKY, M.D. prescribe most often?
Based on 2023 Medicare Part D data, CORINNE DE CHOLNOKY, M.D.'s most frequently prescribed drugs include Estradiol, Fluconazole, Clotrimazole-Betamethasone. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does CORINNE DE CHOLNOKY, M.D. accept Medicare?
CORINNE DE CHOLNOKY, M.D. appears in CMS Medicare data with 437 Part D claims and 138 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify CORINNE DE CHOLNOKY, M.D.'s credentials?
CORINNE DE CHOLNOKY, M.D.'s NPI is 1740384379 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