2026 NPPES data Geriatric Medicine (Internal Medicine) Physician NPI 1952332199 MD
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GERARD KERINS, MD

Geriatric Medicine (Internal Medicine) Physician in NEW HAVEN, 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
1K
Medicare Part D claims · 180 beneficiaries · Geriatric Medicine (Internal Medicine) Physician avg: 4K
Generic prescribing
90%
generic claims · 10% brand-name · higher generic rates reduce patient out-of-pocket costs
MIPS score
93.2757/100
▲ 10 pts above national avg 83.1 · [object Object]
What the federal data reveals: GERARD KERINS, MD is a Geriatric Medicine (Internal Medicine) Physician ([object Object]) practicing in NEW HAVEN, Connecticut with a Medicare Part D prescribing footprint of 1K claims across 180 beneficiaries — 10% brand-name prescribing . Their CMS MIPS Final Score of 93.2757/100 (national average: 83.1) reflects performance across Quality, Cost, Interoperability, and Improvement Activities .

What stands out: GERARD KERINS, MD reported a CMS MIPS final score of 93.2757 out of 100, above the 83.1 national average, and filed 1,131 Medicare Part D claims in 2023. Every figure on this page comes straight from federal CMS records, with no proprietary rating applied.

Board certification likely (heuristic — not verified)

GERARD KERINS, MD practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + MIPS quality reporting + 1 hospital affiliation — signals consistent with board-certified status. For verified board certification, see CertificationMatters.org (the official ABMS public lookup).

GERARD KERINS, MD at a glance

High performer (top quartile)

NPI registry status

Active

Issued 07/05/2006

NPI 1952332199

Primary specialty

Geriatric Medicine (Internal Medicine) Physician

Niche

4,161 US NPIs in this specialty

Medicare Part D claims

1,131 75% vs specialty avg

2023 prescription claims

Specialty avg: 4,450

MIPS final score

93.2757/100 10.175700000000006% pts

Exceptional band

vs 83.1 national avg

Specialty distribution in Connecticut

How Geriatric Medicine (Internal Medicine) Physician compares to other specialties among Connecticut providers

Connecticut providers

Geriatric Medicine (Internal Medicine) Physician share within Connecticut

1. Geriatric Medicine (Internal Medicine) Physician42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Geriatric Medicine (Internal Medicine) Physician share within Connecticut

Medicare quality performance — MIPS

GERARD KERINS, MD's 2023 MIPS final score plotted against the Geriatric Medicine (Internal Medicine) Physician national average

High performer (top quartile)
MIPS Final Score
93.2757/100
vs 83.1 national avg · 2023 performance year

MIPS final score (Geriatric Medicine (Internal Medicine) Physician) — 93.2757/100 vs national avg 83.1

0%100%National avg83%93.3%
MIPS final score (Geriatric Medicine (Internal Medicine) Physician) — 93.2757/100 vs national avg 83.1

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).

GERARD KERINS, MD is a Geriatric Medicine (Internal Medicine) Physician provider practicing in NEW HAVEN, Connecticut, according to the CMS National Plan and Provider Enumeration System (NPPES). Credentials: MD. NPI: 1952332199. 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.

GERARD KERINS, MD appears in the CMS NPPES registry as a Geriatric Medicine (Internal Medicine) Physician provider holding MD credentials at 1450 CHAPEL ST, NEW HAVEN, CT, 06511, with a listed phone of (203) 789-3022. NPI 1952332199 was issued on 07/05/2006. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what KERINS 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 1,131 prescription claims written by this provider, covering 180 Medicare beneficiaries and totaling roughly $37K in drug spend, split 10% brand-name and 90% generic by claim count. 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. On the CMS Merit-based Incentive Payment System, this provider earned a Final Score of 93.2757/100 for the 2023 performance year (Quality 81.7219), compared with the national average of 83.1.

Geriatric Medicine (Internal Medicine) Physician is a narrow specialty nationwide, with 4,161 enrolled providers across 52 states and an average of 4,450 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

1450 CHAPEL ST
NEW HAVEN, CT 06511

Provider Details

NPI 1952332199
Specialty Geriatric Medicine (Internal Medicine) Physician
Credentials MD
Gender Male
NPI Issued 07/05/2006

CMS Quality Score (MIPS)

Merit-based Incentive Payment System (MIPS) scores from CMS, 2023 performance year.

93.2757
Final Score
Avg: 83.1
81.7219
Quality
78.0315
Promoting Interoperability

Reporting: Alternative Payment Model

Hospital and facility affiliations

Facilities where GERARD KERINS, MD 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.

NORTHEAST MEDICAL GROUP INC
NEW HAVEN, 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

GERARD KERINS, MD — brand share 10.0%
Specialty average (est.)

10% brand-name claims vs 90% generic, on 1,131 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.

1,131
Total Claims
$37K
Total Drug Cost
180
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
1,645
Total Day Supply
42,438
Brand vs Generic
10% brand / 90% generic
Brand Drug Cost
$18K
Generic Drug Cost
$19K

Patient Demographics

Average Patient Age
78.1 years
Avg HCC Risk Score
2.20
Gender Split
62% female / 38% male
Age Distribution
<65: 23, 65-74: 40, 75-84: 61, 85+: 56

Top Prescribed Drugs (Medicare Part D)

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

Drug Claims
Donepezil Hcl
148
Memantine Hcl
94
Mirtazapine
91
Trazodone Hcl
79
Sertraline Hcl
69
Escitalopram Oxalate
63
Amlodipine Besylate
51
Levothyroxine Sodium
34
Metoprolol Succinate
28
Atorvastatin Calcium
27

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

Geriatric Medicine (Internal Medicine) Physician Overview

How GERARD KERINS, MD fits within the Geriatric Medicine (Internal Medicine) Physician landscape nationally.

4,161
Geriatric Medicine (Internal Medicine) Physician Providers in US
52
States with Geriatric Medicine (Internal Medicine) Physician
4,450
Avg Claims per Provider

GERARD KERINS, MD's 1,131 claims are below the specialty average of 4,450.

Nearby Geriatric Medicine (Internal Medicine) Physician Providers in Connecticut

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

Compare Geriatric Medicine (Internal Medicine) Physician nationally: see state-by-state distribution →

Frequently Asked Questions

What is GERARD KERINS, MD's specialty?
GERARD KERINS, MD specializes in Geriatric Medicine (Internal Medicine) Physician and practices in NEW HAVEN, Connecticut. Credentials: MD.
How much does GERARD KERINS, MD prescribe under Medicare Part D?
In 2023, GERARD KERINS, MD wrote 1,131 Medicare Part D claims totaling $37K in drug costs for 180 beneficiaries.
What is GERARD KERINS, MD's Medicare quality score?
GERARD KERINS, MD has a CMS MIPS Final Score of 93.2757/100 (Quality: 81.7219). The national average MIPS Final Score is 83.1. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is GERARD KERINS, MD located?
GERARD KERINS, MD is located at 1450 CHAPEL ST, NEW HAVEN, CT, 06511. Phone: (203) 789-3022.
What is GERARD KERINS, MD's NPI number?
GERARD KERINS, MD's National Provider Identifier (NPI) is 1952332199, issued on 07/05/2006.
Does GERARD KERINS, MD prescribe more brand-name or generic drugs?
GERARD KERINS, MD's prescribing is 10% brand-name and 90% generic drugs by claim count, with $18K in brand drug costs.
How many Geriatric Medicine (Internal Medicine) Physician providers are there in the US?
There are 4,161 Geriatric Medicine (Internal Medicine) Physician providers across 52 states in the US. The average Geriatric Medicine (Internal Medicine) Physician provider writes 4,450 Medicare Part D claims per year.
What drugs does GERARD KERINS, MD prescribe most often?
Based on 2023 Medicare Part D data, GERARD KERINS, MD's most frequently prescribed drugs include Donepezil Hcl, Memantine Hcl, Mirtazapine. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does GERARD KERINS, MD accept Medicare?
GERARD KERINS, MD appears in CMS Medicare data with 1,131 Part D claims and 180 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify GERARD KERINS, MD's credentials?
GERARD KERINS, MD's NPI is 1952332199 with credentials MD. 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.
Quality Performance
CMS Merit-based Incentive Payment System (MIPS) — 2023 performance year.
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