2026 NPPES data Physician Assistant NPI 1588139604
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DAVID CROSBY

Physician Assistant in STRATFORD, 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
4K
Medicare Part D claims · 365 beneficiaries · Physician Assistant avg: 790
Generic prescribing
88%
generic claims · 12% brand-name · higher generic rates reduce patient out-of-pocket costs

What the federal data shows

DAVID CROSBY filed 3,869 Medicare Part D claims in 2023 as a Physician Assistant in STRATFORD, Connecticut, prescribing 88% generic.

4K
Part D claims, 2023
88%
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.

DAVID CROSBY's Medicare Part D volume vs every U.S. prescriber

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

3,869 Top 9% higher than 91% 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 DAVID CROSBY?

Quality data not reported

NPI registry status

Active

Issued 10/04/2018

NPI 1588139604

Primary specialty

Physician Assistant

High-volume

149,975 US NPIs in this specialty

Medicare Part D claims

3,869 390% vs specialty avg

2023 prescription claims

Specialty avg: 790

Specialty distribution in Connecticut

How Physician Assistant compares to other specialties among Connecticut providers

Connecticut providers

Physician Assistant share within Connecticut

1. Physician Assistant42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Physician Assistant share within Connecticut

Specialty board-certification context

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

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

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

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

DAVID CROSBY appears in the CMS NPPES registry as a Physician Assistant provider at 125 PUMPKIN GROUND ROAD, STRATFORD, CT, 06614, with a listed phone of (203) 521-6659. NPI 1588139604 was issued on 10/04/2018. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what CROSBY 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 3,869 prescription claims written by this provider, covering 365 Medicare beneficiaries and totaling roughly $368K in drug spend, split 12% brand-name and 88% generic by claim count, with an opioid prescribing rate of 4.4%. 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.

Physician Assistant is a high-volume specialty nationwide, with 149,975 enrolled providers across 56 states and an average of 790 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

125 PUMPKIN GROUND ROAD
STRATFORD, CT 06614

Provider Details

NPI 1588139604
Specialty Physician Assistant
Gender Male
NPI Issued 10/04/2018

Hospital and facility affiliations

Facilities where DAVID CROSBY 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.

HARTFORD HEALTHCARE MEDICAL GROUP INC
WEST HARTFORD, 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).

Brand vs generic prescribing mix · Typical

DAVID CROSBY — brand share 12.0%
Specialty average (est.)

12% brand-name claims vs 88% generic, on 3,869 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.

3,869
Total Claims
$368K
Total Drug Cost
365
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
8,177
Total Day Supply
235,696
Brand vs Generic
12% brand / 88% generic
Brand Drug Cost
$287K
Generic Drug Cost
$76K
Opioid Claims
171 (4.4% rate)
Antibiotic Claims
97

Patient Demographics

Average Patient Age
72.2 years
Avg HCC Risk Score
1.34
Gender Split
54% female / 46% male
Age Distribution
<65: 57, 65-74: 160, 75-84: 103, 85+: 45

Top Prescribed Drugs (Medicare Part D)

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

What DAVID CROSBY 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
Atorvastatin Calcium
288
Amlodipine Besylate
158
Metformin Hcl
113
Lisinopril
112
Albuterol Sulfate Hfa
Albuterol Sulfate
101
Levothyroxine Sodium
101
Pantoprazole Sodium
101
Gabapentin
90
Losartan Potassium
89
Rosuvastatin Calcium
79

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

Physician Assistant Overview

How DAVID CROSBY fits within the Physician Assistant landscape nationally.

149,975
Physician Assistant Providers in US
56
States with Physician Assistant
790
Avg Claims per Provider

DAVID CROSBY's 3,869 claims are above the specialty average of 790.

Nearby Physician Assistant Providers in Connecticut

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

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

Frequently Asked Questions

What is DAVID CROSBY's specialty?
DAVID CROSBY specializes in Physician Assistant and practices in STRATFORD, Connecticut.
How much does DAVID CROSBY prescribe under Medicare Part D?
In 2023, DAVID CROSBY wrote 3,869 Medicare Part D claims totaling $368K in drug costs for 365 beneficiaries.
Where is DAVID CROSBY located?
DAVID CROSBY is located at 125 PUMPKIN GROUND ROAD, STRATFORD, CT, 06614. Phone: (203) 521-6659.
What is DAVID CROSBY's NPI number?
DAVID CROSBY's National Provider Identifier (NPI) is 1588139604, issued on 10/04/2018.
Does DAVID CROSBY prescribe more brand-name or generic drugs?
DAVID CROSBY's prescribing is 12% brand-name and 88% generic drugs by claim count, with $287K in brand drug costs.
Does DAVID CROSBY prescribe opioids?
Yes, DAVID CROSBY had 171 opioid claims in 2023 with an opioid prescribing rate of 4.4%.
How many Physician Assistant providers are there in the US?
There are 149,975 Physician Assistant providers across 56 states in the US. The average Physician Assistant provider writes 790 Medicare Part D claims per year.
What drugs does DAVID CROSBY prescribe most often?
Based on 2023 Medicare Part D data, DAVID CROSBY's most frequently prescribed drugs include Atorvastatin Calcium, Amlodipine Besylate, Metformin Hcl. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does DAVID CROSBY accept Medicare?
DAVID CROSBY appears in CMS Medicare data with 3,869 Part D claims and 365 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify DAVID CROSBY's credentials?
DAVID CROSBY's NPI is 1588139604. 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