2026 NPPES data Psychiatric Pharmacist NPI 1902281199 PHARM. D.
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VAN NGUYEN, PHARM. D.

Psychiatric Pharmacist in OAKLAND, 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
142
Medicare Part D claims · 34 beneficiaries · Psychiatric Pharmacist avg: 396
What the federal data reveals: VAN NGUYEN, PHARM. D. is a Psychiatric Pharmacist ([object Object]) practicing in OAKLAND, California with a Medicare Part D prescribing footprint of 142 claims across 34 beneficiaries .

What stands out: VAN NGUYEN, PHARM. D. filed 142 Medicare Part D claims in 2023 across OAKLAND, California. Every figure on this page comes straight from federal CMS records, with no proprietary rating applied.

VAN NGUYEN, PHARM. D. at a glance

Quality data not reported

NPI registry status

Active

Issued 07/29/2015

NPI 1902281199

Primary specialty

Psychiatric Pharmacist

Niche

837 US NPIs in this specialty

Medicare Part D claims

142 64% vs specialty avg

2023 prescription claims

Specialty avg: 396

Specialty distribution in California

How Psychiatric Pharmacist compares to other specialties among California providers

California providers

Psychiatric Pharmacist share within California

1. Psychiatric Pharmacist42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Psychiatric Pharmacist share within California

Specialty board-certification context

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

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

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

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

VAN NGUYEN, PHARM. D. is a Psychiatric Pharmacist provider practicing in OAKLAND, California, according to the CMS National Plan and Provider Enumeration System (NPPES). Credentials: PHARM. D.. NPI: 1902281199. 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.

VAN NGUYEN, PHARM. D. appears in the CMS NPPES registry as a Psychiatric Pharmacist provider holding PHARM. D. credentials at 629 OAKLAND AVE, OAKLAND, CA, 94611, with a listed phone of (510) 671-0908. NPI 1902281199 was issued on 07/29/2015. 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 142 prescription claims written by this provider, covering 34 Medicare beneficiaries and totaling roughly $23K in drug spend. 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.

Psychiatric Pharmacist is a narrow specialty nationwide, with 837 enrolled providers across 49 states and an average of 396 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

629 OAKLAND AVE
OAKLAND, CA 94611

Provider Details

NPI 1902281199
Specialty Psychiatric Pharmacist
Credentials PHARM. D.
Gender Male
NPI Issued 07/29/2015

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 VAN NGUYEN, PHARM. D.. To verify VAN NGUYEN, PHARM. D.'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.

Medicare Part D Prescribing Data

CMS Medicare Part D prescriber-level data for calendar year 2023.

142
Total Claims
$23K
Total Drug Cost
34
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
154
Total Day Supply
4,448
Generic Drug Cost
$6K

Patient Demographics

Average Patient Age
58.0 years
Avg HCC Risk Score
0.89
Age Distribution
<65: 16, 65-74: 18, 75-84: 0, 85+: 0

Top Prescribed Drugs (Medicare Part D)

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

Drug Claims
Trazodone Hcl
17
Aripiprazole
12
Bupropion Xl
Bupropion Hcl
12

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

Psychiatric Pharmacist Overview

How VAN NGUYEN, PHARM. D. fits within the Psychiatric Pharmacist landscape nationally.

837
Psychiatric Pharmacist Providers in US
49
States with Psychiatric Pharmacist
396
Avg Claims per Provider

VAN NGUYEN, PHARM. D.'s 142 claims are below the specialty average of 396.

Nearby Psychiatric Pharmacist Providers in California

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

Compare Psychiatric Pharmacist nationally: see state-by-state distribution →

Frequently Asked Questions

What is VAN NGUYEN, PHARM. D.'s specialty?
VAN NGUYEN, PHARM. D. specializes in Psychiatric Pharmacist and practices in OAKLAND, California. Credentials: PHARM. D..
How much does VAN NGUYEN, PHARM. D. prescribe under Medicare Part D?
In 2023, VAN NGUYEN, PHARM. D. wrote 142 Medicare Part D claims totaling $23K in drug costs for 34 beneficiaries.
Where is VAN NGUYEN, PHARM. D. located?
VAN NGUYEN, PHARM. D. is located at 629 OAKLAND AVE, OAKLAND, CA, 94611. Phone: (510) 671-0908.
What is VAN NGUYEN, PHARM. D.'s NPI number?
VAN NGUYEN, PHARM. D.'s National Provider Identifier (NPI) is 1902281199, issued on 07/29/2015.
How many Psychiatric Pharmacist providers are there in the US?
There are 837 Psychiatric Pharmacist providers across 49 states in the US. The average Psychiatric Pharmacist provider writes 396 Medicare Part D claims per year.
What drugs does VAN NGUYEN, PHARM. D. prescribe most often?
Based on 2023 Medicare Part D data, VAN NGUYEN, PHARM. D.'s most frequently prescribed drugs include Trazodone Hcl, Aripiprazole, Bupropion Xl. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does VAN NGUYEN, PHARM. D. accept Medicare?
VAN NGUYEN, PHARM. D. appears in CMS Medicare data with 142 Part D claims and 34 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify VAN NGUYEN, PHARM. D.'s credentials?
VAN NGUYEN, PHARM. D.'s NPI is 1902281199 with credentials PHARM. 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