2026 NPPES data Ambulatory Care Pharmacist NPI 1770255622 PHARMD
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ANNIE VOONG, PHARMD

Ambulatory Care Pharmacist in TORRANCE, 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
270
Medicare Part D claims · 61 beneficiaries · Ambulatory Care Pharmacist avg: 492
Generic prescribing
45%
generic claims · 55% brand-name · higher generic rates reduce patient out-of-pocket costs

What the federal data shows

ANNIE VOONG, PHARMD filed 270 Medicare Part D claims in 2023 as a Ambulatory Care Pharmacist in TORRANCE, California, prescribing 45% generic.

270
Part D claims, 2023
45%
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.

ANNIE VOONG, PHARMD's Medicare Part D volume vs every U.S. prescriber

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

270 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

What does the federal data show about ANNIE VOONG, PHARMD?

Quality data not reported

NPI registry status

Active

Issued 09/29/2021

NPI 1770255622

Primary specialty

Ambulatory Care Pharmacist

Niche

3,473 US NPIs in this specialty

Medicare Part D claims

270 45% vs specialty avg

2023 prescription claims

Specialty avg: 492

Specialty distribution in California

How Ambulatory Care Pharmacist compares to other specialties among California providers

California providers

Ambulatory Care Pharmacist share within California

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

Specialty board-certification context

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

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

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

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

ANNIE VOONG, PHARMD appears in the CMS NPPES registry as a Ambulatory Care Pharmacist provider holding PHARMD credentials at 4101 TORRANCE BLVD, TORRANCE, CA, 90503, with a listed phone of (310) 303-5358. NPI 1770255622 was issued on 09/29/2021. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what VOONG 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 270 prescription claims written by this provider, covering 61 Medicare beneficiaries and totaling roughly $2.3 million in drug spend, split 55% brand-name and 45% 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.

Ambulatory Care Pharmacist is a narrow specialty nationwide, with 3,473 enrolled providers across 52 states and an average of 492 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

4101 TORRANCE BLVD
TORRANCE, CA 90503

Provider Details

NPI 1770255622
Specialty Ambulatory Care Pharmacist
Credentials PHARMD
Gender Female
NPI Issued 09/29/2021

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 ANNIE VOONG, PHARMD. To verify ANNIE VOONG, PHARMD'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 · Brand-heavy

ANNIE VOONG, PHARMD — brand share 55.0%
Specialty average (est.)

55% brand-name claims vs 45% generic, on 270 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.

270
Total Claims
$2.3M
Total Drug Cost
61
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
274
Total Day Supply
7,549
Brand vs Generic
55% brand / 45% generic
Brand Drug Cost
$2.2M
Generic Drug Cost
$91K

Patient Demographics

Average Patient Age
73.0 years
Avg HCC Risk Score
1.87
Gender Split
33% female / 67% male

Top Prescribed Drugs (Medicare Part D)

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

What ANNIE VOONG, PHARMD 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
Nubeqa
Darolutamide
37
Abiraterone Acetate
24
Orgovyx
Relugolix
22
Prednisone
20
Ondansetron Odt
Ondansetron
19
Fotivda
Tivozanib Hcl
15
Gabapentin
13
Dexamethasone
11

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

Ambulatory Care Pharmacist Overview

How ANNIE VOONG, PHARMD fits within the Ambulatory Care Pharmacist landscape nationally.

3,473
Ambulatory Care Pharmacist Providers in US
52
States with Ambulatory Care Pharmacist
492
Avg Claims per Provider

ANNIE VOONG, PHARMD's 270 claims are below the specialty average of 492.

Nearby Ambulatory Care Pharmacist Providers in California

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

Compare Ambulatory Care Pharmacist nationally: see state-by-state distribution →

Frequently Asked Questions

What is ANNIE VOONG, PHARMD's specialty?
ANNIE VOONG, PHARMD specializes in Ambulatory Care Pharmacist and practices in TORRANCE, California. Credentials: PHARMD.
How much does ANNIE VOONG, PHARMD prescribe under Medicare Part D?
In 2023, ANNIE VOONG, PHARMD wrote 270 Medicare Part D claims totaling $2.3M in drug costs for 61 beneficiaries.
Where is ANNIE VOONG, PHARMD located?
ANNIE VOONG, PHARMD is located at 4101 TORRANCE BLVD, TORRANCE, CA, 90503. Phone: (310) 303-5358.
What is ANNIE VOONG, PHARMD's NPI number?
ANNIE VOONG, PHARMD's National Provider Identifier (NPI) is 1770255622, issued on 09/29/2021.
Does ANNIE VOONG, PHARMD prescribe more brand-name or generic drugs?
ANNIE VOONG, PHARMD's prescribing is 55% brand-name and 45% generic drugs by claim count, with $2.2M in brand drug costs.
How many Ambulatory Care Pharmacist providers are there in the US?
There are 3,473 Ambulatory Care Pharmacist providers across 52 states in the US. The average Ambulatory Care Pharmacist provider writes 492 Medicare Part D claims per year.
What drugs does ANNIE VOONG, PHARMD prescribe most often?
Based on 2023 Medicare Part D data, ANNIE VOONG, PHARMD's most frequently prescribed drugs include Nubeqa, Abiraterone Acetate, Orgovyx. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does ANNIE VOONG, PHARMD accept Medicare?
ANNIE VOONG, PHARMD appears in CMS Medicare data with 270 Part D claims and 61 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify ANNIE VOONG, PHARMD's credentials?
ANNIE VOONG, PHARMD's NPI is 1770255622 with credentials PHARMD. 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