2026 NPPES data Critical Care Medicine Nurse Practitioner NPI 1003155623 NP
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GEETANJALI CHATTERJEE, NP

Critical Care Medicine Nurse Practitioner in WILMINGTON, Delaware. 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
3K
Medicare Part D claims · 150 beneficiaries · Critical Care Medicine Nurse Practitioner avg: 426
Generic prescribing
86%
generic claims · 14% brand-name · higher generic rates reduce patient out-of-pocket costs

What the federal data shows

GEETANJALI CHATTERJEE, NP filed 3,288 Medicare Part D claims in 2023 as a Critical Care Medicine Nurse Practitioner in WILMINGTON, Delaware, prescribing 86% generic.

3K
Part D claims, 2023
86%
generic prescribing

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.

GEETANJALI CHATTERJEE, NP's Medicare Part D volume vs every U.S. prescriber

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

3,288 Top 11% higher than 89% 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%). Below this entry. 1,600–1,800: 19,072 prescribers (1%). Below this entry. 1,800–2,000: 16,451 prescribers (1%). Below this entry. 2,000–2,200: 213,991 prescribers (16%). This entry sits in this band. 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 GEETANJALI CHATTERJEE, NP?

Quality data not reported

NPI registry status

Active

Issued 02/01/2013

NPI 1003155623

Primary specialty

Critical Care Medicine Nurse Practitioner

Niche

1,410 US NPIs in this specialty

Medicare Part D claims

3,288 672% vs specialty avg

2023 prescription claims

Specialty avg: 426

Specialty distribution in Delaware

How Critical Care Medicine Nurse Practitioner compares to other specialties among Delaware providers

Delaware providers

Critical Care Medicine Nurse Practitioner share within Delaware

1. Critical Care Medicine Nurse Practitioner42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Critical Care Medicine Nurse Practitioner share within Delaware

Specialty board-certification context

Estimated specialty board-certified rate — Critical Care Medicine Nurse Practitioner (ABMS / AOA reference)

Quality data not reported
Est. board-certified rate
78%
Critical Care Medicine Nurse Practitioner ABMS/AOA estimate

Est. board-certified rate (Critical Care Medicine Nurse Practitioner) — ABMS / AOA estimate

0%100%78%
Est. board-certified rate (Critical Care Medicine Nurse Practitioner) — 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).

GEETANJALI CHATTERJEE, NP appears in the CMS NPPES registry as a Critical Care Medicine Nurse Practitioner provider holding NP credentials at 1400 N WASHINGTON ST STE 300, WILMINGTON, DE, 19801, with a listed phone of (302) 320-5700. NPI 1003155623 was issued on 02/01/2013. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what CHATTERJEE 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 3,288 prescription claims written by this provider, covering 150 Medicare beneficiaries and totaling roughly $330K in drug spend, split 14% brand-name and 86% generic by claim count, with an opioid prescribing rate of 2.6%. 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.

Critical Care Medicine Nurse Practitioner is a narrow specialty nationwide, with 1,410 enrolled providers across 50 states and an average of 426 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

1400 N WASHINGTON ST STE 300
WILMINGTON, DE 19801

Provider Details

NPI 1003155623
Specialty Critical Care Medicine Nurse Practitioner
Credentials NP
Gender Female
NPI Issued 02/01/2013

Hospital and facility affiliations

Facilities where GEETANJALI CHATTERJEE, NP 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.

CHRISTIANA CARE HEALTH SERVICES INC
NEWARK, DE

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

GEETANJALI CHATTERJEE, NP — brand share 14.0%
Specialty average (est.)

14% brand-name claims vs 86% generic, on 3,288 2023 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 2023.

3,288
Total Claims
$330K
Total Drug Cost
150
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
5,570
Total Day Supply
158,082
Brand vs Generic
14% brand / 86% generic
Brand Drug Cost
$251K
Generic Drug Cost
$77K
Opioid Claims
84 (2.6% rate)
Antibiotic Claims
117

Patient Demographics

Average Patient Age
77.7 years
Avg HCC Risk Score
2.92
Gender Split
69% female / 31% male
Age Distribution
<65: 21, 65-74: 28, 75-84: 50, 85+: 51

Top Prescribed Drugs (Medicare Part D)

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

What GEETANJALI CHATTERJEE, NP 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
Furosemide
144
Atorvastatin Calcium
129
Amlodipine Besylate
118
Omeprazole
104
Gabapentin
102
Levothyroxine Sodium
96
Trazodone Hcl
82
Potassium Chloride
73
Duloxetine Hcl
71
Albuterol Sulfate Hfa
Albuterol Sulfate
55

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

Critical Care Medicine Nurse Practitioner Overview

How GEETANJALI CHATTERJEE, NP fits within the Critical Care Medicine Nurse Practitioner landscape nationally.

1,410
Critical Care Medicine Nurse Practitioner Providers in US
50
States with Critical Care Medicine Nurse Practitioner
426
Avg Claims per Provider

GEETANJALI CHATTERJEE, NP's 3,288 claims are above the specialty average of 426.

Nearby Critical Care Medicine Nurse Practitioner Providers in Delaware

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

Compare Critical Care Medicine Nurse Practitioner nationally: see state-by-state distribution →

Frequently Asked Questions

What is GEETANJALI CHATTERJEE, NP's specialty?
GEETANJALI CHATTERJEE, NP specializes in Critical Care Medicine Nurse Practitioner and practices in WILMINGTON, Delaware. Credentials: NP.
How much does GEETANJALI CHATTERJEE, NP prescribe under Medicare Part D?
In 2023, GEETANJALI CHATTERJEE, NP wrote 3,288 Medicare Part D claims totaling $330K in drug costs for 150 beneficiaries.
Where is GEETANJALI CHATTERJEE, NP located?
GEETANJALI CHATTERJEE, NP is located at 1400 N WASHINGTON ST STE 300, WILMINGTON, DE, 19801. Phone: (302) 320-5700.
What is GEETANJALI CHATTERJEE, NP's NPI number?
GEETANJALI CHATTERJEE, NP's National Provider Identifier (NPI) is 1003155623, issued on 02/01/2013.
Does GEETANJALI CHATTERJEE, NP prescribe more brand-name or generic drugs?
GEETANJALI CHATTERJEE, NP's prescribing is 14% brand-name and 86% generic drugs by claim count, with $251K in brand drug costs.
Does GEETANJALI CHATTERJEE, NP prescribe opioids?
Yes, GEETANJALI CHATTERJEE, NP had 84 opioid claims in 2023 with an opioid prescribing rate of 2.6%.
How many Critical Care Medicine Nurse Practitioner providers are there in the US?
There are 1,410 Critical Care Medicine Nurse Practitioner providers across 50 states in the US. The average Critical Care Medicine Nurse Practitioner provider writes 426 Medicare Part D claims per year.
What drugs does GEETANJALI CHATTERJEE, NP prescribe most often?
Based on 2023 Medicare Part D data, GEETANJALI CHATTERJEE, NP's most frequently prescribed drugs include Furosemide, Atorvastatin Calcium, Amlodipine Besylate. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does GEETANJALI CHATTERJEE, NP accept Medicare?
GEETANJALI CHATTERJEE, NP appears in CMS Medicare data with 3,288 Part D claims and 150 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify GEETANJALI CHATTERJEE, NP's credentials?
GEETANJALI CHATTERJEE, NP's NPI is 1003155623 with credentials NP. 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