2026 NPPES data Optometrist NPI 1457356024 O.D., P.A.
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JANET WHELAN, O.D., P.A.

Optometrist in BIDDEFORD, Maine. 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
51
Medicare Part D claims · 32 beneficiaries · Optometrist avg: 257
Generic prescribing
51%
generic claims · 49% brand-name · higher generic rates reduce patient out-of-pocket costs

What the federal data shows

JANET WHELAN, O.D., P.A. filed 51 Medicare Part D claims in 2023 as a Optometrist in BIDDEFORD, Maine, prescribing 51% generic.

51
Part D claims, 2023
51%
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.

JANET WHELAN, O.D., P.A.'s Medicare Part D volume vs every U.S. prescriber

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

51 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 JANET WHELAN, O.D., P.A.?

Quality data not reported

NPI registry status

Active

Issued 06/20/2005

NPI 1457356024

Primary specialty

Optometrist

High-volume

60,463 US NPIs in this specialty

Medicare Part D claims

51 80% vs specialty avg

2023 prescription claims

Specialty avg: 257

Specialty distribution in Maine

How Optometrist compares to other specialties among Maine providers

Maine providers

Optometrist share within Maine

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

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).

JANET WHELAN, O.D., P.A. is a Optometrist provider practicing in BIDDEFORD, Maine, according to the CMS National Plan and Provider Enumeration System (NPPES). Credentials: O.D., P.A.. NPI: 1457356024. 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.

JANET WHELAN, O.D., P.A. appears in the CMS NPPES registry as a Optometrist provider holding O.D., P.A. credentials at 3 BEACON AVE, BIDDEFORD, ME, 04005, with a listed phone of (207) 284-4231. NPI 1457356024 was issued on 06/20/2005. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what WHELAN 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 51 prescription claims written by this provider, covering 32 Medicare beneficiaries and totaling roughly $24K in drug spend, split 49% brand-name and 51% 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

3 BEACON AVE
BIDDEFORD, ME 04005

Provider Details

NPI 1457356024
Specialty Optometrist
Credentials O.D., P.A.
Gender Female
NPI Issued 06/20/2005

Hospital and facility affiliations

Facilities where JANET WHELAN, O.D., P.A. 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.

BEACON EYE CARE PA
BIDDEFORD, ME

Affiliations sourced from CMS Doctors and Clinicians National Downloadable File; hospital ratings from CMS Hospital General Information dataset (cross-referenced by facility name + state).

Brand vs generic prescribing mix · Above average

JANET WHELAN, O.D., P.A. — brand share 49.0%
Specialty average (est.)

49% brand-name claims vs 51% generic, on 51 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.

51
Total Claims
$24K
Total Drug Cost
32
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
82
Total Day Supply
2,168
Brand vs Generic
49% brand / 51% generic
Brand Drug Cost
$23K
Generic Drug Cost
$521

Patient Demographics

Average Patient Age
74.0 years
Avg HCC Risk Score
0.87

Top Prescribed Drugs (Medicare Part D)

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

Drug Claims
Restasis
Cyclosporine
16
Erythromycin
Erythromycin Base
15

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

Optometrist Overview

How JANET WHELAN, O.D., P.A. fits within the Optometrist landscape nationally.

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

JANET WHELAN, O.D., P.A.'s 51 claims are below the specialty average of 257.

Nearby Optometrist Providers in Maine

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

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

Frequently Asked Questions

What is JANET WHELAN, O.D., P.A.'s specialty?
JANET WHELAN, O.D., P.A. specializes in Optometrist and practices in BIDDEFORD, Maine. Credentials: O.D., P.A..
How much does JANET WHELAN, O.D., P.A. prescribe under Medicare Part D?
In 2023, JANET WHELAN, O.D., P.A. wrote 51 Medicare Part D claims totaling $24K in drug costs for 32 beneficiaries.
Where is JANET WHELAN, O.D., P.A. located?
JANET WHELAN, O.D., P.A. is located at 3 BEACON AVE, BIDDEFORD, ME, 04005. Phone: (207) 284-4231.
What is JANET WHELAN, O.D., P.A.'s NPI number?
JANET WHELAN, O.D., P.A.'s National Provider Identifier (NPI) is 1457356024, issued on 06/20/2005.
Does JANET WHELAN, O.D., P.A. prescribe more brand-name or generic drugs?
JANET WHELAN, O.D., P.A.'s prescribing is 49% brand-name and 51% generic drugs by claim count, with $23K 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 JANET WHELAN, O.D., P.A. prescribe most often?
Based on 2023 Medicare Part D data, JANET WHELAN, O.D., P.A.'s most frequently prescribed drugs include Restasis, Erythromycin. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does JANET WHELAN, O.D., P.A. accept Medicare?
JANET WHELAN, O.D., P.A. appears in CMS Medicare data with 51 Part D claims and 32 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify JANET WHELAN, O.D., P.A.'s credentials?
JANET WHELAN, O.D., P.A.'s NPI is 1457356024 with credentials O.D., P.A.. 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