2026 NPPES data Glaucoma Specialist (Ophthalmology) Physician NPI 1114157104 M.D.
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JI LIU, M.D.

Glaucoma Specialist (Ophthalmology) 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
4K
Medicare Part D claims · 644 beneficiaries · Glaucoma Specialist (Ophthalmology) Physician avg: 3K
Generic prescribing
58%
generic claims · 42% 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]
Industry payments
$145.03
1 payments · CMS Open Payments (Sunshine Act)
What the federal data reveals: JI LIU, M.D. is a Glaucoma Specialist (Ophthalmology) Physician ([object Object]) practicing in NEW HAVEN, Connecticut with a Medicare Part D prescribing footprint of 4K claims across 644 beneficiaries — 42% brand-name prescribing . Their CMS MIPS Final Score of 73.5637/100 (national average: 83.1) reflects performance across Quality, Cost, Interoperability, and Improvement Activities . Industry payments of $145.03 across 1 transactions are disclosed under CMS Open Payments (Sunshine Act).

What the federal data shows

JI LIU, M.D. reported a CMS MIPS final score of 73.5637/100 — below the 83.1 national average — and filed 3,573 Medicare Part D claims in 2023.

73.5637/100
MIPS score · -10 vs avg
4K
Part D claims, 2023
58%
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.

JI LIU, 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)

JI LIU, 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).

JI LIU, M.D. at a glance

Below national average

NPI registry status

Active

Issued 07/23/2009

NPI 1114157104

Primary specialty

Glaucoma Specialist (Ophthalmology) Physician

Rare

354 US NPIs in this specialty

Medicare Part D claims

3,573 21% vs specialty avg

2023 prescription claims

Specialty avg: 2,962

MIPS final score

73.5637/100 9.536299999999997% pts

Mid-tier band

vs 83.1 national avg

Specialty distribution in Connecticut

How Glaucoma Specialist (Ophthalmology) Physician compares to other specialties among Connecticut providers

Connecticut providers

Glaucoma Specialist (Ophthalmology) Physician share within Connecticut

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

Medicare quality performance — MIPS

JI LIU, M.D.'s 2023 MIPS final score plotted against the Glaucoma Specialist (Ophthalmology) Physician national average

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

MIPS final score (Glaucoma Specialist (Ophthalmology) Physician) — 73.5637/100 vs national avg 83.1

0%100%National avg83%73.6%
MIPS final score (Glaucoma Specialist (Ophthalmology) 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).

JI LIU, M.D. is a Glaucoma Specialist (Ophthalmology) Physician provider practicing in NEW HAVEN, Connecticut, according to the CMS National Plan and Provider Enumeration System (NPPES). Credentials: M.D.. NPI: 1114157104. 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.

JI LIU, M.D. appears in the CMS NPPES registry as a Glaucoma Specialist (Ophthalmology) Physician provider holding M.D. credentials at 40 TEMPLE ST, NEW HAVEN, CT, 06510, with a listed phone of (203) 785-3360. NPI 1114157104 was issued on 07/23/2009. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what LIU 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 3,573 prescription claims written by this provider, covering 644 Medicare beneficiaries and totaling roughly $834K in drug spend, split 42% brand-name and 58% 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.

Glaucoma Specialist (Ophthalmology) Physician is a narrow specialty nationwide, with 354 enrolled providers across 42 states and an average of 2,962 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

40 TEMPLE ST
NEW HAVEN, CT 06510

Provider Details

NPI 1114157104
Specialty Glaucoma Specialist (Ophthalmology) Physician
Credentials M.D.
Gender Male
NPI Issued 07/23/2009

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 JI LIU, 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
GUILFORD, 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 JI LIU, M.D.. Source: openpaymentsdata.cms.gov.

Total received

$145

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.

Brand vs generic prescribing mix · Above average

JI LIU, M.D. — brand share 42.0%
Specialty average (est.)

42% brand-name claims vs 58% generic, on 3,573 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.

3,573
Total Claims
$834K
Total Drug Cost
644
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
7,211
Total Day Supply
210,531
Brand vs Generic
42% brand / 58% generic
Brand Drug Cost
$699K
Generic Drug Cost
$135K

Patient Demographics

Average Patient Age
76.4 years
Avg HCC Risk Score
1.43
Gender Split
56% female / 44% male
Age Distribution
<65: 51, 65-74: 210, 75-84: 253, 85+: 130

Top Prescribed Drugs (Medicare Part D)

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

Drug Claims
Latanoprost
593
Dorzolamide-Timolol
Dorzolamide Hcl/Timolol Maleat
515
Timolol Maleate
309
Brimonidine Tartrate
228
Prednisolone Acetate
169
Rocklatan
Netarsudil Mesylat/Latanoprost
163
Alphagan P
Brimonidine Tartrate
137
Dorzolamide Hcl
134
Rhopressa
Netarsudil Mesylate
128
Combigan
Brimonidine Tartrate/Timolol
111

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

Glaucoma Specialist (Ophthalmology) Physician Overview

How JI LIU, M.D. fits within the Glaucoma Specialist (Ophthalmology) Physician landscape nationally.

354
Glaucoma Specialist (Ophthalmology) Physician Providers in US
42
States with Glaucoma Specialist (Ophthalmology) Physician
2,962
Avg Claims per Provider

JI LIU, M.D.'s 3,573 claims are above the specialty average of 2,962.

Nearby Glaucoma Specialist (Ophthalmology) Physician Providers in Connecticut

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

Compare Glaucoma Specialist (Ophthalmology) Physician nationally: see state-by-state distribution →

Frequently Asked Questions

What is JI LIU, M.D.'s specialty?
JI LIU, M.D. specializes in Glaucoma Specialist (Ophthalmology) Physician and practices in NEW HAVEN, Connecticut. Credentials: M.D..
How much does JI LIU, M.D. prescribe under Medicare Part D?
In 2023, JI LIU, M.D. wrote 3,573 Medicare Part D claims totaling $834K in drug costs for 644 beneficiaries.
What is JI LIU, M.D.'s Medicare quality score?
JI LIU, 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 JI LIU, M.D. located?
JI LIU, M.D. is located at 40 TEMPLE ST, NEW HAVEN, CT, 06510. Phone: (203) 785-3360.
What is JI LIU, M.D.'s NPI number?
JI LIU, M.D.'s National Provider Identifier (NPI) is 1114157104, issued on 07/23/2009.
Does JI LIU, M.D. prescribe more brand-name or generic drugs?
JI LIU, M.D.'s prescribing is 42% brand-name and 58% generic drugs by claim count, with $699K in brand drug costs.
How many Glaucoma Specialist (Ophthalmology) Physician providers are there in the US?
There are 354 Glaucoma Specialist (Ophthalmology) Physician providers across 42 states in the US. The average Glaucoma Specialist (Ophthalmology) Physician provider writes 2,962 Medicare Part D claims per year.
What drugs does JI LIU, M.D. prescribe most often?
Based on 2023 Medicare Part D data, JI LIU, M.D.'s most frequently prescribed drugs include Latanoprost, Dorzolamide-Timolol, Timolol Maleate. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does JI LIU, M.D. accept Medicare?
JI LIU, M.D. appears in CMS Medicare data with 3,573 Part D claims and 644 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify JI LIU, M.D.'s credentials?
JI LIU, M.D.'s NPI is 1114157104 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