2026 NPPES data Psychiatry Physician NPI 1275805079 M.D.
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KAREN OPDYKE, M.D.

Psychiatry Physician in WHITEHOUSE STATION, New Jersey. 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
489
Medicare Part D claims · 42 beneficiaries · Psychiatry Physician avg: 1K
Generic prescribing
96%
generic claims · 4% brand-name · higher generic rates reduce patient out-of-pocket costs

What the federal data shows

KAREN OPDYKE, M.D. filed 489 Medicare Part D claims in 2023 as a Psychiatry Physician in WHITEHOUSE STATION, New Jersey, prescribing 96% generic.

489
Part D claims, 2023
96%
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.

KAREN OPDYKE, M.D.'s Medicare Part D volume vs every U.S. prescriber

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

489 Top 38% higher than 62% 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%). This entry sits in this band. 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

Board-eligible specialty (heuristic — not verified)

KAREN OPDYKE, M.D. 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).

What does the federal data show about KAREN OPDYKE, M.D.?

Quality data not reported

NPI registry status

Active

Issued 02/08/2012

NPI 1275805079

Primary specialty

Psychiatry Physician

High-volume

53,104 US NPIs in this specialty

Medicare Part D claims

489 53% vs specialty avg

2023 prescription claims

Specialty avg: 1,038

Specialty distribution in New Jersey

How Psychiatry Physician compares to other specialties among New Jersey providers

New Jersey providers

Psychiatry Physician share within New Jersey

1. Psychiatry Physician42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Psychiatry Physician share within New Jersey

Specialty board-certification context

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

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

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

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

KAREN OPDYKE, M.D. appears in the CMS NPPES registry as a Psychiatry Physician provider holding M.D. credentials at 152 OLDWICK RD, WHITEHOUSE STATION, NJ, 08889, with a listed phone of (800) 438-3206. NPI 1275805079 was issued on 02/08/2012. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what OPDYKE 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 489 prescription claims written by this provider, covering 42 Medicare beneficiaries and totaling roughly $25K in drug spend, split 4% brand-name and 96% 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.

Psychiatry Physician is a high-volume specialty nationwide, with 53,104 enrolled providers across 56 states and an average of 1,038 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

152 OLDWICK RD
WHITEHOUSE STATION, NJ 08889

Provider Details

NPI 1275805079
Specialty Psychiatry Physician
Credentials M.D.
Gender Female
NPI Issued 02/08/2012

Brand vs generic prescribing mix · Generic-heavy

KAREN OPDYKE, M.D. — brand share 4.0%
Specialty average (est.)

4% brand-name claims vs 96% generic, on 489 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.

489
Total Claims
$25K
Total Drug Cost
42
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
974
Total Day Supply
29,015
Brand vs Generic
4% brand / 96% generic
Brand Drug Cost
$12K
Generic Drug Cost
$13K

Patient Demographics

Average Patient Age
69.6 years
Avg HCC Risk Score
0.69
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 KAREN OPDYKE, M.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
Clonazepam
51
Escitalopram Oxalate
50
Venlafaxine Hcl Er
Venlafaxine Hcl
42
Bupropion Xl
Bupropion Hcl
32
Lorazepam
27
Alprazolam
25
Mirtazapine
24
Gabapentin
23
Duloxetine Hcl
20
Trazodone Hcl
20

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

Psychiatry Physician Overview

How KAREN OPDYKE, M.D. fits within the Psychiatry Physician landscape nationally.

53,104
Psychiatry Physician Providers in US
56
States with Psychiatry Physician
1,038
Avg Claims per Provider

KAREN OPDYKE, M.D.'s 489 claims are below the specialty average of 1,038.

Nearby Psychiatry Physician Providers in New Jersey

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

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

Frequently Asked Questions

What is KAREN OPDYKE, M.D.'s specialty?
KAREN OPDYKE, M.D. specializes in Psychiatry Physician and practices in WHITEHOUSE STATION, New Jersey. Credentials: M.D..
How much does KAREN OPDYKE, M.D. prescribe under Medicare Part D?
In 2023, KAREN OPDYKE, M.D. wrote 489 Medicare Part D claims totaling $25K in drug costs for 42 beneficiaries.
Where is KAREN OPDYKE, M.D. located?
KAREN OPDYKE, M.D. is located at 152 OLDWICK RD, WHITEHOUSE STATION, NJ, 08889. Phone: (800) 438-3206.
What is KAREN OPDYKE, M.D.'s NPI number?
KAREN OPDYKE, M.D.'s National Provider Identifier (NPI) is 1275805079, issued on 02/08/2012.
Does KAREN OPDYKE, M.D. prescribe more brand-name or generic drugs?
KAREN OPDYKE, M.D.'s prescribing is 4% brand-name and 96% generic drugs by claim count, with $12K in brand drug costs.
How many Psychiatry Physician providers are there in the US?
There are 53,104 Psychiatry Physician providers across 56 states in the US. The average Psychiatry Physician provider writes 1,038 Medicare Part D claims per year.
What drugs does KAREN OPDYKE, M.D. prescribe most often?
Based on 2023 Medicare Part D data, KAREN OPDYKE, M.D.'s most frequently prescribed drugs include Clonazepam, Escitalopram Oxalate, Venlafaxine Hcl Er. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does KAREN OPDYKE, M.D. accept Medicare?
KAREN OPDYKE, M.D. appears in CMS Medicare data with 489 Part D claims and 42 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify KAREN OPDYKE, M.D.'s credentials?
KAREN OPDYKE, M.D.'s NPI is 1275805079 with credentials M.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