2026 NPPES data Optometrist NPI 1790861524 O.D.
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JENNY CHA, O.D.

Optometrist in GLASTONBURY, 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
100
Medicare Part D claims · 28 beneficiaries · Optometrist avg: 257
Generic prescribing
62%
generic claims · 38% brand-name · higher generic rates reduce patient out-of-pocket costs
Industry payments
$94.58
1 payments · CMS Open Payments (Sunshine Act)
What the federal data reveals: JENNY CHA, O.D. is a Optometrist ([object Object]) practicing in GLASTONBURY, Connecticut with a Medicare Part D prescribing footprint of 100 claims across 28 beneficiaries — 38% brand-name prescribing . Industry payments of $94.58 across 1 transactions are disclosed under CMS Open Payments (Sunshine Act).

What stands out: JENNY CHA, O.D. filed 100 Medicare Part D claims in 2023 across GLASTONBURY, Connecticut. Every figure on this page comes straight from federal CMS records, with no proprietary rating applied.

JENNY CHA, O.D. at a glance

Quality data not reported

NPI registry status

Active

Issued 10/27/2006

NPI 1790861524

Primary specialty

Optometrist

High-volume

60,463 US NPIs in this specialty

Medicare Part D claims

100 61% vs specialty avg

2023 prescription claims

Specialty avg: 257

Specialty distribution in Connecticut

How Optometrist compares to other specialties among Connecticut providers

Connecticut providers

Optometrist share within Connecticut

1. Optometrist42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Optometrist share within Connecticut

Specialty board-certification context

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

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

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

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

JENNY CHA, O.D. is a Optometrist provider practicing in GLASTONBURY, Connecticut, according to the CMS National Plan and Provider Enumeration System (NPPES). Credentials: O.D.. NPI: 1790861524. 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.

JENNY CHA, O.D. appears in the CMS NPPES registry as a Optometrist provider holding O.D. credentials at 221 ADDISON RD., GLASTONBURY, CT, 06033, with a listed phone of (860) 838-3838. NPI 1790861524 was issued on 10/27/2006. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what CHA 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 100 prescription claims written by this provider, covering 28 Medicare beneficiaries and totaling roughly $24K in drug spend, split 38% brand-name and 62% 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.

Optometrist is a high-volume specialty nationwide, with 60,463 enrolled providers across 56 states and an average of 257 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

221 ADDISON RD.
GLASTONBURY, CT 06033

Provider Details

NPI 1790861524
Specialty Optometrist
Credentials O.D.
Gender Female
NPI Issued 10/27/2006

Hospital and facility affiliations

Facilities where JENNY CHA, O.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.

OCULUSDOCS LLC
GLASTONBURY, 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 JENNY CHA, O.D.. Source: openpaymentsdata.cms.gov.

Total received

$95

Largest payer

CooperVision 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

JENNY CHA, O.D. — brand share 38.0%
Specialty average (est.)

38% brand-name claims vs 62% generic, on 100 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.

100
Total Claims
$24K
Total Drug Cost
28
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
179
Total Day Supply
5,167
Brand vs Generic
38% brand / 62% generic
Brand Drug Cost
$22K
Generic Drug Cost
$2K

Patient Demographics

Average Patient Age
72.9 years
Avg HCC Risk Score
0.84
Age Distribution
<65: 0, 65-74: 18, 75-84: N/A, 85+: N/A

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
32
Lumigan
Bimatoprost
23
Timolol Maleate
18

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

Optometrist Overview

How JENNY CHA, O.D. fits within the Optometrist landscape nationally.

60,463
Optometrist Providers in US
56
States with Optometrist
257
Avg Claims per Provider

JENNY CHA, O.D.'s 100 claims are below the specialty average of 257.

Nearby Optometrist Providers in Connecticut

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

Compare Optometrist nationally: see state-by-state distribution →

Frequently Asked Questions

What is JENNY CHA, O.D.'s specialty?
JENNY CHA, O.D. specializes in Optometrist and practices in GLASTONBURY, Connecticut. Credentials: O.D..
How much does JENNY CHA, O.D. prescribe under Medicare Part D?
In 2023, JENNY CHA, O.D. wrote 100 Medicare Part D claims totaling $24K in drug costs for 28 beneficiaries.
Where is JENNY CHA, O.D. located?
JENNY CHA, O.D. is located at 221 ADDISON RD., GLASTONBURY, CT, 06033. Phone: (860) 838-3838.
What is JENNY CHA, O.D.'s NPI number?
JENNY CHA, O.D.'s National Provider Identifier (NPI) is 1790861524, issued on 10/27/2006.
Does JENNY CHA, O.D. prescribe more brand-name or generic drugs?
JENNY CHA, O.D.'s prescribing is 38% brand-name and 62% generic drugs by claim count, with $22K in brand drug costs.
How many Optometrist providers are there in the US?
There are 60,463 Optometrist providers across 56 states in the US. The average Optometrist provider writes 257 Medicare Part D claims per year.
What drugs does JENNY CHA, O.D. prescribe most often?
Based on 2023 Medicare Part D data, JENNY CHA, O.D.'s most frequently prescribed drugs include Latanoprost, Lumigan, Timolol Maleate. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does JENNY CHA, O.D. accept Medicare?
JENNY CHA, O.D. appears in CMS Medicare data with 100 Part D claims and 28 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify JENNY CHA, O.D.'s credentials?
JENNY CHA, O.D.'s NPI is 1790861524 with credentials O.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.
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