2026 NPPES data Specialist NPI 1891728853 M.D.
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DARLENE NEGBENEBOR, M.D.

Specialist 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
2K
Medicare Part D claims · 371 beneficiaries · Specialist avg: 1K
Industry payments
$4.6K
197 payments · CMS Open Payments (Sunshine Act)

What the federal data shows

DARLENE NEGBENEBOR, M.D. filed 1,594 Medicare Part D claims in 2023 as a Specialist in STAMFORD, Connecticut.

2K
Part D claims, 2023
$4.6K
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.

DARLENE NEGBENEBOR, M.D.'s Medicare Part D volume vs every U.S. prescriber

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

1,594 Top 19% higher than 81% 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%). Below this entry. 600–800: 56,224 prescribers (4%). Below this entry. 800–1,000: 40,919 prescribers (3%). Below this entry. 1,000–1,200: 31,827 prescribers (2%). Below this entry. 1,200–1,400: 26,224 prescribers (2%). Below this entry. 1,400–1,600: 21,710 prescribers (2%). This entry sits in this band. 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

What does the federal data show about DARLENE NEGBENEBOR, M.D.?

Quality data not reported

NPI registry status

Active

Issued 07/09/2006

NPI 1891728853

Primary specialty

Specialist

High-volume

69,658 US NPIs in this specialty

Medicare Part D claims

1,594 8% vs specialty avg

2023 prescription claims

Specialty avg: 1,474

Specialty distribution in Connecticut

How Specialist compares to other specialties among Connecticut providers

Connecticut providers

Specialist share within Connecticut

1. Specialist42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Specialist share within Connecticut

Specialty board-certification context

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

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

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

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

DARLENE NEGBENEBOR, M.D. is a Specialist provider practicing in STAMFORD, Connecticut, according to the CMS National Plan and Provider Enumeration System (NPPES). Credentials: M.D.. NPI: 1891728853. 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.

DARLENE NEGBENEBOR, M.D. appears in the CMS NPPES registry as a Specialist provider holding M.D. credentials at 90 MORGAN ST, STAMFORD, CT, 06905, with a listed phone of (203) 998-7400. NPI 1891728853 was issued on 07/09/2006. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what NEGBENEBOR 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 1,594 prescription claims written by this provider, covering 371 Medicare beneficiaries and totaling roughly $924K 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.

Specialist is a high-volume specialty nationwide, with 69,658 enrolled providers across 55 states and an average of 1,474 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

90 MORGAN ST
STAMFORD, CT 06905

Provider Details

NPI 1891728853
Specialty Specialist
Credentials M.D.
Gender Female
NPI Issued 07/09/2006

Hospital and facility affiliations

Facilities where DARLENE NEGBENEBOR, 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.

STAMFORD GASTROENTEROLOGY INC
STAMFORD, CT

Affiliations sourced from CMS Doctors and Clinicians National Downloadable File; hospital ratings from CMS Hospital General Information dataset (cross-referenced by facility name + state).

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 DARLENE NEGBENEBOR, M.D.. Source: openpaymentsdata.cms.gov.

Total received

$4.6K

Largest payer

ABBVIE INC.

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.

1,594
Total Claims
$924K
Total Drug Cost
371
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
2,691
Total Day Supply
76,397
Generic Drug Cost
$94K
Antibiotic Claims
61

Patient Demographics

Average Patient Age
73.3 years
Avg HCC Risk Score
1.15
Gender Split
76% female / 24% male
Age Distribution
<65: 27, 65-74: 193, 75-84: 116, 85+: 35

Top Prescribed Drugs (Medicare Part D)

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

Drug Claims
Omeprazole
383
Famotidine
335
Linzess
Linaclotide
87
Pantoprazole Sodium
79
Creon
Lipase/Protease/Amylase
72
Dexlansoprazole Dr
Dexlansoprazole
44
Mesalamine
42
Trulance
Plecanatide
41
Xifaxan
Rifaximin
37
Plenvu
Peg3350/Sod Sul/Nacl/Kcl/Asb/C
29

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

Specialist Overview

How DARLENE NEGBENEBOR, M.D. fits within the Specialist landscape nationally.

69,658
Specialist Providers in US
55
States with Specialist
1,474
Avg Claims per Provider

DARLENE NEGBENEBOR, M.D.'s 1,594 claims are above the specialty average of 1,474.

Nearby Specialist Providers in Connecticut

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

Compare Specialist nationally: see state-by-state distribution →

Frequently Asked Questions

What is DARLENE NEGBENEBOR, M.D.'s specialty?
DARLENE NEGBENEBOR, M.D. specializes in Specialist and practices in STAMFORD, Connecticut. Credentials: M.D..
How much does DARLENE NEGBENEBOR, M.D. prescribe under Medicare Part D?
In 2023, DARLENE NEGBENEBOR, M.D. wrote 1,594 Medicare Part D claims totaling $924K in drug costs for 371 beneficiaries.
Where is DARLENE NEGBENEBOR, M.D. located?
DARLENE NEGBENEBOR, M.D. is located at 90 MORGAN ST, STAMFORD, CT, 06905. Phone: (203) 998-7400.
What is DARLENE NEGBENEBOR, M.D.'s NPI number?
DARLENE NEGBENEBOR, M.D.'s National Provider Identifier (NPI) is 1891728853, issued on 07/09/2006.
How many Specialist providers are there in the US?
There are 69,658 Specialist providers across 55 states in the US. The average Specialist provider writes 1,474 Medicare Part D claims per year.
What drugs does DARLENE NEGBENEBOR, M.D. prescribe most often?
Based on 2023 Medicare Part D data, DARLENE NEGBENEBOR, M.D.'s most frequently prescribed drugs include Omeprazole, Famotidine, Linzess. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does DARLENE NEGBENEBOR, M.D. accept Medicare?
DARLENE NEGBENEBOR, M.D. appears in CMS Medicare data with 1,594 Part D claims and 371 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify DARLENE NEGBENEBOR, M.D.'s credentials?
DARLENE NEGBENEBOR, M.D.'s NPI is 1891728853 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