2026 NPPES data Optometrist NPI 1831383215 O.D.
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JENNIFER GIERMEK, O.D.

Optometrist in BRONX, New York. 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 · 181 beneficiaries · Optometrist avg: 257
Generic prescribing
72%
generic claims · 28% brand-name · higher generic rates reduce patient out-of-pocket costs

What the federal data shows

JENNIFER GIERMEK, O.D. filed 1,101 Medicare Part D claims in 2023 as a Optometrist in BRONX, New York, prescribing 72% generic.

1K
Part D claims, 2023
72%
generic prescribing

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.

JENNIFER GIERMEK, O.D.'s Medicare Part D volume vs every U.S. prescriber

Total Medicare Part D claims, 2023 — across all CMS prescribers nationally

1,101 Top 23% higher than 77% of 1,370,886 prescribers

0–200: 670,926 prescribers (49%). Below this entry. 200–400: 182,923 prescribers (13%). Below this entry. 400–600: 90,619 prescribers (7%). Below this entry. 600–800: 56,224 prescribers (4%). Below this entry. 800–1,000: 40,919 prescribers (3%). Below this entry. 1,000–1,200: 31,827 prescribers (2%). This entry sits in this band. 1,200–1,400: 26,224 prescribers (2%). Above this entry. 1,400–1,600: 21,710 prescribers (2%). Above this entry. 1,600–1,800: 19,072 prescribers (1%). Above this entry. 1,800–2,000: 16,451 prescribers (1%). Above this entry. 2,000–2,200: 213,991 prescribers (16%). Above this entry. This provider 0 2K+ every Part D prescriber (claims/yr), bucketed by value

Each bar is a band; taller bars hold more prescribers. 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 Medicare Part D Prescriber Public Use File · 2023

What does the federal data show about JENNIFER GIERMEK, O.D.?

Quality data not reported

NPI registry status

Active

Issued 08/29/2007

NPI 1831383215

Primary specialty

Optometrist

High-volume

60,463 US NPIs in this specialty

Medicare Part D claims

1,101 328% vs specialty avg

2023 prescription claims

Specialty avg: 257

Specialty distribution in New York

How Optometrist compares to other specialties among New York providers

New York providers

Optometrist share within New York

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

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).

JENNIFER GIERMEK, O.D. appears in the CMS NPPES registry as a Optometrist provider holding O.D. credentials at 103 W KINGSBRIDGE RD, BRONX, NY, 10468, with a listed phone of (718) 432-5555. NPI 1831383215 was issued on 08/29/2007. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what GIERMEK 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 1,101 prescription claims written by this provider, covering 181 Medicare beneficiaries and totaling roughly $130K in drug spend, split 28% brand-name and 72% 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

103 W KINGSBRIDGE RD
BRONX, NY 10468

Provider Details

NPI 1831383215
Specialty Optometrist
Credentials O.D.
Gender Female
NPI Issued 08/29/2007

License & disciplinary context — New York NYSBPMC 2023 annual report

Aggregate state board data only — NOT a determination of any individual provider's status. The figures below describe statewide disciplinary activity across all ~100K New York medical licensees in 2023 — they are NOT specific to JENNIFER GIERMEK, O.D.. To verify JENNIFER GIERMEK, O.D.'s current license status, search the NYSBPMC public license lookup directly, or check the Federation of State Medical Boards (FSMB) verification service.

312
Total board actions, New York 2023
Across 302 cases
3.12
Actions per 1,000 licensees
New York statewide rate
probation
Most common action type
89 cases

NYSBPMC publishes annual disciplinary statistics as part of public-record reporting under each state's Administrative Procedure Act. See the full breakdown by action type and year on the New York disciplinary trends page. Cross-checked against FSMB U.S. Medical Regulatory Trends.

Brand vs generic prescribing mix · Above average

JENNIFER GIERMEK, O.D. — brand share 28.0%
Specialty average (est.)

28% brand-name claims vs 72% generic, on 1,101 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.

1,101
Total Claims
$130K
Total Drug Cost
181
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
1,915
Total Day Supply
55,904
Brand vs Generic
28% brand / 72% generic
Brand Drug Cost
$86K
Generic Drug Cost
$44K

Patient Demographics

Average Patient Age
75.6 years
Avg HCC Risk Score
1.10
Gender Split
67% female / 33% male

Top Prescribed Drugs (Medicare Part D)

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

What JENNIFER GIERMEK, O.D. prescribes most

Top Medicare Part D drugs by claim count, 2023

claims
Source CMS Medicare Part D Prescriber Public Use File As of 2023
Drug Claims
Latanoprost
490
Timolol Maleate
89
Dorzolamide Hcl
77
Dorzolamide-Timolol
Dorzolamide Hcl/Timolol Maleat
72
Brinzolamide
69
Brimonidine Tartrate
68
Combigan
Brimonidine Tartrate/Timolol
51
Brimonidine Tartrate-Timolol
Brimonidine Tartrate/Timolol
44
Restasis
Cyclosporine
25
Lumigan
Bimatoprost
20

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

Optometrist Overview

How JENNIFER GIERMEK, O.D. fits within the Optometrist landscape nationally.

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

JENNIFER GIERMEK, O.D.'s 1,101 claims are above the specialty average of 257.

Nearby Optometrist Providers in New York

Other clinicians with the same primary specialty enrolled in New York, drawn from the same CMS NPPES roster as GIERMEK.

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

Frequently Asked Questions

What is JENNIFER GIERMEK, O.D.'s specialty?
JENNIFER GIERMEK, O.D. specializes in Optometrist and practices in BRONX, New York. Credentials: O.D..
How much does JENNIFER GIERMEK, O.D. prescribe under Medicare Part D?
In 2023, JENNIFER GIERMEK, O.D. wrote 1,101 Medicare Part D claims totaling $130K in drug costs for 181 beneficiaries.
Where is JENNIFER GIERMEK, O.D. located?
JENNIFER GIERMEK, O.D. is located at 103 W KINGSBRIDGE RD, BRONX, NY, 10468. Phone: (718) 432-5555.
What is JENNIFER GIERMEK, O.D.'s NPI number?
JENNIFER GIERMEK, O.D.'s National Provider Identifier (NPI) is 1831383215, issued on 08/29/2007.
Does JENNIFER GIERMEK, O.D. prescribe more brand-name or generic drugs?
JENNIFER GIERMEK, O.D.'s prescribing is 28% brand-name and 72% generic drugs by claim count, with $86K 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 JENNIFER GIERMEK, O.D. prescribe most often?
Based on 2023 Medicare Part D data, JENNIFER GIERMEK, O.D.'s most frequently prescribed drugs include Latanoprost, Timolol Maleate, Dorzolamide Hcl. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does JENNIFER GIERMEK, O.D. accept Medicare?
JENNIFER GIERMEK, O.D. appears in CMS Medicare data with 1,101 Part D claims and 181 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify JENNIFER GIERMEK, O.D.'s credentials?
JENNIFER GIERMEK, O.D.'s NPI is 1831383215 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