2026 NPPES data Optometrist NPI 1558487595 O.D.
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CHERYL DIFERDINANDO, O.D.

Optometrist in DELAND, Florida. 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
18
Medicare Part D claims · Optometrist avg: 257
Generic prescribing
33%
generic claims · 67% brand-name · higher generic rates reduce patient out-of-pocket costs

What the federal data shows

CHERYL DIFERDINANDO, O.D. filed 18 Medicare Part D claims in 2023 as a Optometrist in DELAND, Florida, prescribing 33% generic.

18
Part D claims, 2023
33%
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.

CHERYL DIFERDINANDO, O.D.'s Medicare Part D volume vs every U.S. prescriber

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

18 0th percentile higher than 0% of 1,370,886 prescribers

0–200: 670,926 prescribers (49%). This entry sits in this band. 200–400: 182,923 prescribers (13%). Above this entry. 400–600: 90,619 prescribers (7%). Above this entry. 600–800: 56,224 prescribers (4%). Above this entry. 800–1,000: 40,919 prescribers (3%). Above this entry. 1,000–1,200: 31,827 prescribers (2%). Above this entry. 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 CHERYL DIFERDINANDO, O.D.?

Quality data not reported

NPI registry status

Active

Issued 03/21/2007

NPI 1558487595

Primary specialty

Optometrist

High-volume

60,463 US NPIs in this specialty

Medicare Part D claims

18 93% vs specialty avg

2023 prescription claims

Specialty avg: 257

Specialty distribution in Florida

How Optometrist compares to other specialties among Florida providers

Florida providers

Optometrist share within Florida

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

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).

CHERYL DIFERDINANDO, O.D. appears in the CMS NPPES registry as a Optometrist provider holding O.D. credentials at 2659 S WOODLAND BLVD, DELAND, FL, 32720, with a listed phone of (386) 736-3579. NPI 1558487595 was issued on 03/21/2007. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what DIFERDINANDO 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 18 prescription claims written by this provider, covering N/A Medicare beneficiaries and totaling roughly $264 in drug spend, split 67% brand-name and 33% 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

2659 S WOODLAND BLVD
DELAND, FL 32720

Provider Details

NPI 1558487595
Specialty Optometrist
Credentials O.D.
Gender Female
NPI Issued 03/21/2007

License & disciplinary context — Florida FLDOH 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 ~75K Florida medical licensees in 2023 — they are NOT specific to CHERYL DIFERDINANDO, O.D.. To verify CHERYL DIFERDINANDO, O.D.'s current license status, search the FLDOH public license lookup directly, or check the Federation of State Medical Boards (FSMB) verification service.

480
Total board actions, Florida 2023
Across 467 cases
6.40
Actions per 1,000 licensees
Florida statewide rate
monetary fine
Most common action type
138 cases

FLDOH 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 Florida disciplinary trends page. Cross-checked against FSMB U.S. Medical Regulatory Trends.

Brand vs generic prescribing mix · Brand-heavy

CHERYL DIFERDINANDO, O.D. — brand share 67.0%
Specialty average (est.)

67% brand-name claims vs 33% generic, on 18 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.

18
Total Claims
$264
Total Drug Cost
N/A
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
21
Total Day Supply
355
Brand vs Generic
67% brand / 33% generic
Brand Drug Cost
$241

Patient Demographics

Average Patient Age
79.2 years
Avg HCC Risk Score
1.15

Optometrist Overview

How CHERYL DIFERDINANDO, O.D. fits within the Optometrist landscape nationally.

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

CHERYL DIFERDINANDO, O.D.'s 18 claims are below the specialty average of 257.

Nearby Optometrist Providers in Florida

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

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

Frequently Asked Questions

What is CHERYL DIFERDINANDO, O.D.'s specialty?
CHERYL DIFERDINANDO, O.D. specializes in Optometrist and practices in DELAND, Florida. Credentials: O.D..
How much does CHERYL DIFERDINANDO, O.D. prescribe under Medicare Part D?
In 2023, CHERYL DIFERDINANDO, O.D. wrote 18 Medicare Part D claims totaling $264 in drug costs for N/A beneficiaries.
Where is CHERYL DIFERDINANDO, O.D. located?
CHERYL DIFERDINANDO, O.D. is located at 2659 S WOODLAND BLVD, DELAND, FL, 32720. Phone: (386) 736-3579.
What is CHERYL DIFERDINANDO, O.D.'s NPI number?
CHERYL DIFERDINANDO, O.D.'s National Provider Identifier (NPI) is 1558487595, issued on 03/21/2007.
Does CHERYL DIFERDINANDO, O.D. prescribe more brand-name or generic drugs?
CHERYL DIFERDINANDO, O.D.'s prescribing is 67% brand-name and 33% generic drugs by claim count, with $241 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.
Does CHERYL DIFERDINANDO, O.D. accept Medicare?
CHERYL DIFERDINANDO, O.D. appears in CMS Medicare data with 18 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 CHERYL DIFERDINANDO, O.D.'s credentials?
CHERYL DIFERDINANDO, O.D.'s NPI is 1558487595 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