2026 NPPES data Critical Care Medicine (Internal Medicine) Physician NPI 1104040401 M.D.
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JONATHAN KOFF, M.D.

Critical Care 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
85
Medicare Part D claims · 17 beneficiaries · Critical Care Medicine (Internal Medicine) Physician avg: 1K
Generic prescribing
48%
generic claims · 52% brand-name · higher generic rates reduce patient out-of-pocket costs
MIPS score
73.5637/100
▼ 10 pts below national avg 83.1 · [object Object]

What the federal data shows

JONATHAN KOFF, M.D. reported a CMS MIPS final score of 73.5637/100 — below the 83.1 national average — and filed 85 Medicare Part D claims in 2023.

73.5637/100
MIPS score · -10 vs avg
85
Part D claims, 2023
48%
generic prescribing
Likely
board-certified (heuristic)

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.

JONATHAN KOFF, M.D.'s MIPS score vs every scored U.S. clinician

CMS Merit-based Incentive Payment System (MIPS) final score, 2023 — the federal quality measure

74 11th percentile higher than 11% of 477,587 scored providers

0–10: 8,684 scored providers (2%). Below this entry. 10–20: 3,008 scored providers (1%). Below this entry. 20–30: 3,069 scored providers (1%). Below this entry. 30–40: 2,746 scored providers (1%). Below this entry. 40–50: 2,928 scored providers (1%). Below this entry. 50–60: 5,882 scored providers (1%). Below this entry. 60–70: 13,906 scored providers (3%). Below this entry. 70–80: 118,074 scored providers (25%). This entry sits in this band. 80–90: 129,887 scored providers (27%). Above this entry. 90–100: 189,403 scored providers (40%). Above this entry. This provider 0 100 every MIPS-scored clinician, bucketed by value

Each bar is a band; taller bars hold more scored providers. 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 Merit-based Incentive Payment System (MIPS) · 2023

Board certification likely (heuristic — not verified)

JONATHAN KOFF, M.D. 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).

What does the federal data show about JONATHAN KOFF, M.D.?

Below national average

NPI registry status

Active

Issued 04/11/2007

NPI 1104040401

Primary specialty

Critical Care Medicine (Internal Medicine) Physician

Mid-sized

6,631 US NPIs in this specialty

Medicare Part D claims

85 92% vs specialty avg

2023 prescription claims

Specialty avg: 1,069

MIPS final score

73.5637/100 9.536299999999997% pts

Mid-tier band

vs 83.1 national avg

Specialty distribution in Connecticut

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

Connecticut providers

Critical Care Medicine (Internal Medicine) Physician share within Connecticut

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

Medicare quality performance — MIPS

JONATHAN KOFF, M.D.'s 2023 MIPS final score plotted against the Critical Care Medicine (Internal Medicine) Physician national average

Below national average
MIPS Final Score
73.5637/100
vs 83.1 national avg · 2023 performance year

MIPS final score (Critical Care Medicine (Internal Medicine) Physician) — 73.5637/100 vs national avg 83.1

0%100%National avg83%73.6%
MIPS final score (Critical Care Medicine (Internal Medicine) Physician) — 73.5637/100 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).

JONATHAN KOFF, M.D. appears in the CMS NPPES registry as a Critical Care Medicine (Internal Medicine) Physician provider holding M.D. credentials at 789 HOWARD AVE, NEW HAVEN, CT, 06519, with a listed phone of (203) 785-4198. NPI 1104040401 was issued on 04/11/2007. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what KOFF 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 85 prescription claims written by this provider, covering 17 Medicare beneficiaries and totaling roughly $669K in drug spend, split 52% brand-name and 48% 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 73.5637/100 for the 2023 performance year (Quality 75.8435, Cost 51.4318), compared with the national average of 83.1.

Critical Care Medicine (Internal Medicine) Physician is a mid-sized specialty nationwide, with 6,631 enrolled providers across 53 states and an average of 1,069 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

789 HOWARD AVE
NEW HAVEN, CT 06519

Provider Details

NPI 1104040401
Specialty Critical Care Medicine (Internal Medicine) Physician
Credentials M.D.
Gender Male
NPI Issued 04/11/2007

CMS Quality Score (MIPS)

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

73.5637
Final Score
Avg: 83.1
75.8435
Quality
51.4318
Cost
74
Promoting Interoperability

Reporting: Group practice

Hospital and facility affiliations

Facilities where JONATHAN KOFF, 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.

YALE UNIVERSITY
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 · Brand-heavy

JONATHAN KOFF, M.D. — brand share 52.0%
Specialty average (est.)

52% brand-name claims vs 48% generic, on 85 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.

85
Total Claims
$669K
Total Drug Cost
17
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
111
Total Day Supply
3,195
Brand vs Generic
52% brand / 48% generic
Brand Drug Cost
$669K
Generic Drug Cost
$841
Antibiotic Claims
26

Patient Demographics

Average Patient Age
63.3 years
Avg HCC Risk Score
2.90

Top Prescribed Drugs (Medicare Part D)

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

Drug Claims
Azithromycin
24

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

Critical Care Medicine (Internal Medicine) Physician Overview

How JONATHAN KOFF, M.D. fits within the Critical Care Medicine (Internal Medicine) Physician landscape nationally.

6,631
Critical Care Medicine (Internal Medicine) Physician Providers in US
53
States with Critical Care Medicine (Internal Medicine) Physician
1,069
Avg Claims per Provider

JONATHAN KOFF, M.D.'s 85 claims are below the specialty average of 1,069.

Nearby Critical Care 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 KOFF.

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

Frequently Asked Questions

What is JONATHAN KOFF, M.D.'s specialty?
JONATHAN KOFF, M.D. specializes in Critical Care Medicine (Internal Medicine) Physician and practices in NEW HAVEN, Connecticut. Credentials: M.D..
How much does JONATHAN KOFF, M.D. prescribe under Medicare Part D?
In 2023, JONATHAN KOFF, M.D. wrote 85 Medicare Part D claims totaling $669K in drug costs for 17 beneficiaries.
What is JONATHAN KOFF, M.D.'s Medicare quality score?
JONATHAN KOFF, M.D. has a CMS MIPS Final Score of 73.5637/100 (Quality: 75.8435, Cost: 51.4318). The national average MIPS Final Score is 83.1. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is JONATHAN KOFF, M.D. located?
JONATHAN KOFF, M.D. is located at 789 HOWARD AVE, NEW HAVEN, CT, 06519. Phone: (203) 785-4198.
What is JONATHAN KOFF, M.D.'s NPI number?
JONATHAN KOFF, M.D.'s National Provider Identifier (NPI) is 1104040401, issued on 04/11/2007.
Does JONATHAN KOFF, M.D. prescribe more brand-name or generic drugs?
JONATHAN KOFF, M.D.'s prescribing is 52% brand-name and 48% generic drugs by claim count, with $669K in brand drug costs.
How many Critical Care Medicine (Internal Medicine) Physician providers are there in the US?
There are 6,631 Critical Care Medicine (Internal Medicine) Physician providers across 53 states in the US. The average Critical Care Medicine (Internal Medicine) Physician provider writes 1,069 Medicare Part D claims per year.
What drugs does JONATHAN KOFF, M.D. prescribe most often?
Based on 2023 Medicare Part D data, JONATHAN KOFF, M.D.'s most frequently prescribed drugs include Azithromycin. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does JONATHAN KOFF, M.D. accept Medicare?
JONATHAN KOFF, M.D. appears in CMS Medicare data with 85 Part D claims and 17 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify JONATHAN KOFF, M.D.'s credentials?
JONATHAN KOFF, M.D.'s NPI is 1104040401 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.
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