2026 NPPES data Ophthalmology Physician NPI 1588740757 MD
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JOAN GEWIRTZ, MD

Ophthalmology Physician in STAMFORD, 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
19
Medicare Part D claims · Ophthalmology Physician avg: 1K
What the federal data reveals: JOAN GEWIRTZ, MD is a Ophthalmology Physician ([object Object]) practicing in STAMFORD, Connecticut with a Medicare Part D prescribing footprint of 19 claims .

What stands out: JOAN GEWIRTZ, MD filed 19 Medicare Part D claims in 2023 across STAMFORD, Connecticut. Every figure on this page comes straight from federal CMS records, with no proprietary rating applied.

Board-eligible specialty (heuristic — not verified)

JOAN GEWIRTZ, MD practices in an ABMS-board-eligible specialty but we don't have enough CMS-participation signals to confirm active board-certified status. Consult CertificationMatters.org (the official ABMS public lookup).

JOAN GEWIRTZ, MD at a glance

Quality data not reported

NPI registry status

Active

Issued 10/31/2006

NPI 1588740757

Primary specialty

Ophthalmology Physician

Mid-sized

22,090 US NPIs in this specialty

Medicare Part D claims

19 99% vs specialty avg

2023 prescription claims

Specialty avg: 1,420

Specialty distribution in Connecticut

How Ophthalmology Physician compares to other specialties among Connecticut providers

Connecticut providers

Ophthalmology Physician share within Connecticut

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

Specialty board-certification context

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

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

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

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

JOAN GEWIRTZ, MD is a Ophthalmology Physician provider practicing in STAMFORD, Connecticut, according to the CMS National Plan and Provider Enumeration System (NPPES). Credentials: MD. NPI: 1588740757. 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.

JOAN GEWIRTZ, MD appears in the CMS NPPES registry as a Ophthalmology Physician provider holding MD credentials at 70 MILL RIVER ST, STAMFORD, CT, 06902, with a listed phone of (203) 348-0868. NPI 1588740757 was issued on 10/31/2006. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what GEWIRTZ 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 19 prescription claims written by this provider, covering N/A Medicare beneficiaries and totaling roughly $3K in drug spend. 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.

Ophthalmology Physician is a mid-sized specialty nationwide, with 22,090 enrolled providers across 56 states and an average of 1,420 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

70 MILL RIVER ST
STAMFORD, CT 06902

Provider Details

NPI 1588740757
Specialty Ophthalmology Physician
Credentials MD
Gender Female
NPI Issued 10/31/2006

Medicare Part D Prescribing Data

CMS Medicare Part D prescriber-level data for calendar year 2023.

19
Total Claims
$3K
Total Drug Cost
N/A
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
40
Total Day Supply
1,166
Generic Drug Cost
$719

Patient Demographics

Average Patient Age
73.1 years
Avg HCC Risk Score
1.52

Ophthalmology Physician Overview

How JOAN GEWIRTZ, MD fits within the Ophthalmology Physician landscape nationally.

22,090
Ophthalmology Physician Providers in US
56
States with Ophthalmology Physician
1,420
Avg Claims per Provider

JOAN GEWIRTZ, MD's 19 claims are below the specialty average of 1,420.

Nearby Ophthalmology Physician Providers in Connecticut

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

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

Frequently Asked Questions

What is JOAN GEWIRTZ, MD's specialty?
JOAN GEWIRTZ, MD specializes in Ophthalmology Physician and practices in STAMFORD, Connecticut. Credentials: MD.
How much does JOAN GEWIRTZ, MD prescribe under Medicare Part D?
In 2023, JOAN GEWIRTZ, MD wrote 19 Medicare Part D claims totaling $3K in drug costs for N/A beneficiaries.
Where is JOAN GEWIRTZ, MD located?
JOAN GEWIRTZ, MD is located at 70 MILL RIVER ST, STAMFORD, CT, 06902. Phone: (203) 348-0868.
What is JOAN GEWIRTZ, MD's NPI number?
JOAN GEWIRTZ, MD's National Provider Identifier (NPI) is 1588740757, issued on 10/31/2006.
How many Ophthalmology Physician providers are there in the US?
There are 22,090 Ophthalmology Physician providers across 56 states in the US. The average Ophthalmology Physician provider writes 1,420 Medicare Part D claims per year.
Does JOAN GEWIRTZ, MD accept Medicare?
JOAN GEWIRTZ, MD appears in CMS Medicare data with 19 Part D claims and N/A Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify JOAN GEWIRTZ, MD's credentials?
JOAN GEWIRTZ, MD's NPI is 1588740757 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.
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