2026 NPPES data Child & Adolescent Psychiatry Physician NPI 1982778593 MD
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DEBRA DENHERDER, MD

Child & Adolescent Psychiatry Physician in ANTIOCH, California. 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
290
Medicare Part D claims · 50 beneficiaries · Child & Adolescent Psychiatry Physician avg: 600
Generic prescribing
89%
generic claims · 11% brand-name · higher generic rates reduce patient out-of-pocket costs

What the federal data shows

DEBRA DENHERDER, MD filed 290 Medicare Part D claims in 2023 as a Child & Adolescent Psychiatry Physician in ANTIOCH, California, prescribing 89% generic.

290
Part D claims, 2023
89%
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.

DEBRA DENHERDER, MD's Medicare Part D volume vs every U.S. prescriber

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

290 49th percentile higher than 49% of 1,370,886 prescribers

0–200: 670,926 prescribers (49%). Below this entry. 200–400: 182,923 prescribers (13%). This entry sits in this band. 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

Board-eligible specialty (heuristic — not verified)

DEBRA DENHERDER, 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).

What does the federal data show about DEBRA DENHERDER, MD?

Quality data not reported

NPI registry status

Active

Issued 11/17/2006

NPI 1982778593

Primary specialty

Child & Adolescent Psychiatry Physician

Mid-sized

6,160 US NPIs in this specialty

Medicare Part D claims

290 52% vs specialty avg

2023 prescription claims

Specialty avg: 600

Specialty distribution in California

How Child & Adolescent Psychiatry Physician compares to other specialties among California providers

California providers

Child & Adolescent Psychiatry Physician share within California

1. Child & Adolescent Psychiatry Physician42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Child & Adolescent Psychiatry Physician share within California

Specialty board-certification context

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

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

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

0%100%78%
Est. board-certified rate (Child & Adolescent 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).

DEBRA DENHERDER, MD appears in the CMS NPPES registry as a Child & Adolescent Psychiatry Physician provider holding MD credentials at 3400 DELTA FAIR BLVD, ANTIOCH, CA, 94509, with a listed phone of (925) 779-5000. NPI 1982778593 was issued on 11/17/2006. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what DENHERDER 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 290 prescription claims written by this provider, covering 50 Medicare beneficiaries and totaling roughly $18K in drug spend, split 11% brand-name and 89% 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.

Child & Adolescent Psychiatry Physician is a mid-sized specialty nationwide, with 6,160 enrolled providers across 54 states and an average of 600 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

3400 DELTA FAIR BLVD
ANTIOCH, CA 94509

Provider Details

NPI 1982778593
Specialty Child & Adolescent Psychiatry Physician
Credentials MD
Gender Female
NPI Issued 11/17/2006

License & disciplinary context — California MBC 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 ~150K California medical licensees in 2023 — they are NOT specific to DEBRA DENHERDER, MD. To verify DEBRA DENHERDER, MD's current license status, search the MBC public license lookup directly, or check the Federation of State Medical Boards (FSMB) verification service.

576
Total board actions, California 2023
Across 556 cases
3.84
Actions per 1,000 licensees
California statewide rate
probation
Most common action type
186 cases

MBC 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 California disciplinary trends page. Cross-checked against FSMB U.S. Medical Regulatory Trends.

Brand vs generic prescribing mix · Typical

DEBRA DENHERDER, MD — brand share 11.0%
Specialty average (est.)

11% brand-name claims vs 89% generic, on 290 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.

290
Total Claims
$18K
Total Drug Cost
50
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
687
Total Day Supply
20,454
Brand vs Generic
11% brand / 89% generic
Brand Drug Cost
$10K
Generic Drug Cost
$7K

Patient Demographics

Average Patient Age
63.6 years
Avg HCC Risk Score
1.36
Gender Split
78% female / 22% male
Age Distribution
<65: 18, 65-74: 21, 75-84: N/A, 85+: N/A

Top Prescribed Drugs (Medicare Part D)

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

What DEBRA DENHERDER, MD 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
Trazodone Hcl
21
Trintellix
Vortioxetine Hydrobromide
19
Quetiapine Fumarate
17
Duloxetine Hcl
16
Citalopram Hbr
Citalopram Hydrobromide
15
Mirtazapine
15
Alprazolam
14
Divalproex Sodium
14
Escitalopram Oxalate
12
Fluoxetine Hcl
12

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

Child & Adolescent Psychiatry Physician Overview

How DEBRA DENHERDER, MD fits within the Child & Adolescent Psychiatry Physician landscape nationally.

6,160
Child & Adolescent Psychiatry Physician Providers in US
54
States with Child & Adolescent Psychiatry Physician
600
Avg Claims per Provider

DEBRA DENHERDER, MD's 290 claims are below the specialty average of 600.

Nearby Child & Adolescent Psychiatry Physician Providers in California

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

Compare Child & Adolescent Psychiatry Physician nationally: see state-by-state distribution →

Frequently Asked Questions

What is DEBRA DENHERDER, MD's specialty?
DEBRA DENHERDER, MD specializes in Child & Adolescent Psychiatry Physician and practices in ANTIOCH, California. Credentials: MD.
How much does DEBRA DENHERDER, MD prescribe under Medicare Part D?
In 2023, DEBRA DENHERDER, MD wrote 290 Medicare Part D claims totaling $18K in drug costs for 50 beneficiaries.
Where is DEBRA DENHERDER, MD located?
DEBRA DENHERDER, MD is located at 3400 DELTA FAIR BLVD, ANTIOCH, CA, 94509. Phone: (925) 779-5000.
What is DEBRA DENHERDER, MD's NPI number?
DEBRA DENHERDER, MD's National Provider Identifier (NPI) is 1982778593, issued on 11/17/2006.
Does DEBRA DENHERDER, MD prescribe more brand-name or generic drugs?
DEBRA DENHERDER, MD's prescribing is 11% brand-name and 89% generic drugs by claim count, with $10K in brand drug costs.
How many Child & Adolescent Psychiatry Physician providers are there in the US?
There are 6,160 Child & Adolescent Psychiatry Physician providers across 54 states in the US. The average Child & Adolescent Psychiatry Physician provider writes 600 Medicare Part D claims per year.
What drugs does DEBRA DENHERDER, MD prescribe most often?
Based on 2023 Medicare Part D data, DEBRA DENHERDER, MD's most frequently prescribed drugs include Trazodone Hcl, Trintellix, Quetiapine Fumarate. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does DEBRA DENHERDER, MD accept Medicare?
DEBRA DENHERDER, MD appears in CMS Medicare data with 290 Part D claims and 50 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify DEBRA DENHERDER, MD's credentials?
DEBRA DENHERDER, MD's NPI is 1982778593 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