2026 NPPES data Chiropractor NPI 1831336593 D.C., L. AC. NP
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Teresa Nguyen, D.C., L. AC. NP

Chiropractor in Wilmington, California. This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers — including 95,153 in Chiropractor, and covers specialty classification, practice address, and Medicare Part D prescribing data when reported. According to CMS, every field reflects the provider's official federal registration — see our methodology.

Federal data — no proprietary rating. We show these CMS records as-is — no composite score, no star rating, no editorial opinion layered on top.
Prescribing volume
7K
Medicare Part D claims · 577 beneficiaries · Chiropractor avg: 824
Generic prescribing
94%
generic claims · 6% brand-name · higher generic rates reduce patient out-of-pocket costs
Industry payments
$642.45
25 payments · CMS Open Payments (Sunshine Act)
Compiled from official public sources by the PlainDoctor editorial team.

What the federal data shows

Teresa Nguyen, D.C., L. AC. NP filed 6,573 Medicare Part D claims in 2023 as a Chiropractor in Wilmington, California, prescribing 94% generic.

7K
Part D claims, 2023
94%
generic prescribing
$642.45
industry payments (Sunshine Act)

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.

Teresa Nguyen, D.C., L. AC. NP's Medicare Part D volume vs every U.S. prescriber

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

6,573 Top 4% higher than 96% 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%). Below this entry. 1,200–1,400: 26,224 prescribers (2%). Below this entry. 1,400–1,600: 21,710 prescribers (2%). Below this entry. 1,600–1,800: 19,072 prescribers (1%). Below this entry. 1,800–2,000: 16,451 prescribers (1%). Below this entry. 2,000–2,200: 213,991 prescribers (16%). This entry sits in this band. 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 Teresa Nguyen, D.C., L. AC. NP?

Quality data not reported

NPI registry status

Active

Issued 01/15/2009

NPI 1831336593

Primary specialty

Chiropractor

High-volume

95,153 US NPIs in this specialty

Medicare Part D claims

6,573 vs specialty avg

2023 prescription claims

Specialty avg: 824

Specialty distribution in California

How Chiropractor compares to other specialties among California providers

California providers

Largest specialties in California (% of in-state providers)

Behavior Technician — 17.3%Behavior Technician17.3%Marriage & Family Therapist — 5.5%Marriage & Family Therapist5.5%Student in an Organized Health Care Education/Training Program — 5%Student in an Organized Health Care Education/Training Program5%Mental Health Counselor — 3.9%Mental Health Counselor3.9%Pharmacist — 3.5%Pharmacist3.5%Clinical Social Worker — 3.1%Clinical Social Worker3.1%Chiropractor — 1.2%Chiropractor1.2%
Largest specialties in California (% of in-state providers)

Specialty board-certification context

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

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

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

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

Teresa Nguyen, D.C., L. AC. NP appears in the CMS NPPES registry as a Chiropractor provider holding D.C., L. AC. NP credentials at 803 FIGUEROA ST, Wilmington, CA, 90744, with a listed phone of (310) 830-0863. NPI 1831336593 was issued on 01/15/2009. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what Nguyen 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 6,573 prescription claims written by this provider, covering 577 Medicare beneficiaries and totaling roughly $444K in drug spend, split 6% brand-name and 94% generic by claim count, with an opioid prescribing rate of 30.1%. 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.

Chiropractor is a high-volume specialty nationwide, with 95,153 enrolled providers across 56 states and an average of 824 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

803 FIGUEROA ST
Wilmington, CA 90744

Provider Details

NPI 1831336593
Specialty Chiropractor
Credentials D.C., L. AC. NP
Gender Female
NPI Issued 01/15/2009

Industry payments received (2024) — CMS Open Payments transparency data

The federal Physician Payments Sunshine Act (part of the Affordable Care Act) requires drug and medical-device manufacturers + group purchasing organizations to publicly report payments and other transfers of value to physicians and teaching hospitals. The data below covers 2024 for Teresa Nguyen, D.C., L. AC. NP. Source: openpaymentsdata.cms.gov.

Total received

$642

Largest payer

Galderma Laboratories, L.P.

Most common payment type

Food and Beverage

Industry payments are not necessarily indicators of bias — they include research funding, consulting fees for evidence-based work, royalties for inventions, food at conferences, and similar items. The disclosure exists for transparency. Read our methodology for how we interpret this data.

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 Teresa Nguyen, D.C., L. AC. NP. To verify Teresa Nguyen, D.C., L. AC. NP'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 · Generic-heavy

Teresa Nguyen, D.C., L. AC. NP — brand share 6.0%
Chiropractor average

6% brand-name claims vs 94% generic, on 6,573 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.

6,573
Total Claims
$444K
Total Drug Cost
577
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
6,709
Total Day Supply
178,689
Brand vs Generic
6% brand / 94% generic
Brand Drug Cost
$255K
Generic Drug Cost
$190K
Opioid Claims
1,980 (30.1% rate)
Antibiotic Claims
89

Patient Demographics

Average Patient Age
71.6 years
Avg HCC Risk Score
1.38
Gender Split
54% female / 46% male
Age Distribution
<65: 89, 65-74: 273, 75-84: 167, 85+: 48

Top Prescribed Drugs (Medicare Part D)

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

What Teresa Nguyen, D.C., L. AC. NP 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
Hydrocodone-Acetaminophen
Hydrocodone/Acetaminophen
1,042
Gabapentin
932
Diclofenac Sodium
423
Baclofen
289
Tramadol Hcl
243
Pregabalin
224
Ibuprofen
211
Celecoxib
190
Acetaminophen-Codeine
Acetaminophen With Codeine
188
Ztlido
Lidocaine
166

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

Chiropractor Overview

How Teresa Nguyen, D.C., L. AC. NP fits within the Chiropractor landscape nationally.

95,153
Chiropractor Providers in US
56
States with Chiropractor
824
Avg Claims per Provider

Teresa Nguyen, D.C., L. AC. NP's 6,573 claims are above the specialty average of 824.

Nearby Chiropractor Providers in California

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

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

Before you book an appointment

Use this federal record as your verification checklist, not as a recommendation.

  • Confirm the NPI record is current in the official CMS registry — providers update their own NPPES details, and moves can lag. Verify this NPI
  • Check the active license and any disciplinary history with the California medical board — federal registration is not a license check. Credential verification guide
  • Weigh a second option: compare this provider with a nearby Chiropractor peer on Medicare volume and prescribing patterns. Compare providers

Medicare Part D and MIPS figures describe practice patterns in federal programs only — they are not quality ratings, and PlainDoctor does not rate, rank, or recommend providers.

Frequently Asked Questions

What is Teresa Nguyen, D.C., L. AC. NP's specialty?
Teresa Nguyen, D.C., L. AC. NP specializes in Chiropractor and practices in Wilmington, California. Credentials: D.C., L. AC. NP.
How much does Teresa Nguyen, D.C., L. AC. NP prescribe under Medicare Part D?
In 2023, Teresa Nguyen, D.C., L. AC. NP wrote 6,573 Medicare Part D claims totaling $444K in drug costs for 577 beneficiaries.
Where is Teresa Nguyen, D.C., L. AC. NP located?
Teresa Nguyen, D.C., L. AC. NP is located at 803 FIGUEROA ST, Wilmington, CA, 90744. Phone: (310) 830-0863.
What is Teresa Nguyen, D.C., L. AC. NP's NPI number?
Teresa Nguyen, D.C., L. AC. NP's National Provider Identifier (NPI) is 1831336593, issued on 01/15/2009.
Does Teresa Nguyen, D.C., L. AC. NP prescribe more brand-name or generic drugs?
Teresa Nguyen, D.C., L. AC. NP's prescribing is 6% brand-name and 94% generic drugs by claim count, with $255K in brand drug costs.
Does Teresa Nguyen, D.C., L. AC. NP prescribe opioids?
Yes, Teresa Nguyen, D.C., L. AC. NP had 1,980 opioid claims in 2023 with an opioid prescribing rate of 30.1%.
How many Chiropractor providers are there in the US?
There are 95,153 Chiropractor providers across 56 states in the US. The average Chiropractor provider writes 824 Medicare Part D claims per year.
What drugs does Teresa Nguyen, D.C., L. AC. NP prescribe most often?
Based on 2023 Medicare Part D data, Teresa Nguyen, D.C., L. AC. NP's most frequently prescribed drugs include Hydrocodone-Acetaminophen, Gabapentin, Diclofenac Sodium. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Teresa Nguyen, D.C., L. AC. NP accept Medicare?
Teresa Nguyen, D.C., L. AC. NP appears in CMS Medicare data with 6,573 Part D claims and 577 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Teresa Nguyen, D.C., L. AC. NP's credentials?
Teresa Nguyen, D.C., L. AC. NP's NPI is 1831336593 with credentials D.C., L. AC. NP. 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

Compiled from official public sources by the PlainDoctor editorial team.