NPI registry status
Active
2026 NPPES data Ambulatory Care Pharmacist NPI 1538653530 PHARMD, RPH
Verify on CMS → Sandy Chung, PHARMD, RPH
Ambulatory Care Pharmacist in East Los Angeles, 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 3,496 in Ambulatory Care Pharmacist, 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
521
Medicare Part D claims · 138 beneficiaries · Ambulatory Care Pharmacist avg: 492
Generic prescribing
74%
generic claims · 22% brand-name · higher generic rates reduce patient out-of-pocket costs
Source: CMS Medicare Part D Prescriber Public Use File, 2023
Compiled from official public sources by the PlainDoctor editorial team.
What the federal data shows
Sandy Chung, PHARMD, RPH filed 521 Medicare Part D claims in 2023 as a Ambulatory Care Pharmacist in East Los Angeles, California, prescribing 74% generic.
- 521
- Part D claims, 2023
- 74%
- 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.
Sandy Chung, PHARMD, RPH's Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
521 Top 34% higher than 66% of 1,370,886 prescribers
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 Sandy Chung, PHARMD, RPH?
Quality data not reportedPrimary specialty
Ambulatory Care Pharmacist
Medicare Part D claims
521 6% vs specialty avg
Specialty distribution in California
How Ambulatory Care Pharmacist compares to other specialties among California providers
Board certification
Not published by CMS
CMS does not publish a per-provider board-certification field in NPPES. PlainDoctor does not have a reliable per-specialty certification rate to show for Ambulatory Care Pharmacist. Verify directly:
How MIPS and board certification work
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).
Sandy Chung, PHARMD, RPH appears in the CMS NPPES registry as a Ambulatory Care Pharmacist provider holding PHARMD, RPH credentials at 245 S FETTERLY AVE, East Los Angeles, CA, 90022, with a listed phone of (805) 814-0913. NPI 1538653530 was issued on 06/21/2018.
Medicare Part D records for calendar year 2023 show 521 prescription claims written by this provider, covering 138 Medicare beneficiaries and totaling roughly $66K in drug spend, split 22% brand-name and 74% generic by claim count.
Ambulatory Care Pharmacist is a narrow specialty nationwide, with 3,496 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
Provider Details
| NPI | 1538653530 |
|---|---|
| Specialty | Ambulatory Care Pharmacist |
| Credentials | PHARMD, RPH |
| Gender | Female |
| NPI Issued | 06/21/2018 |
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 Sandy Chung, PHARMD, RPH. To verify Sandy Chung, PHARMD, RPH'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
Sandy Chung, PHARMD, RPH - brand share 22.0%
Ambulatory Care Pharmacist average
22% brand-name claims vs 74% generic, on 521 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.
521
Total Claims
$66K
Total Drug Cost
138
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 990
- Total Day Supply
- 29,248
- Brand vs Generic
- 22% brand / 74% generic
- Brand Drug Cost
- $54K
- Generic Drug Cost
- $11K
Patient Demographics
- Average Patient Age
- 68.7 years
- Avg HCC Risk Score
- 1.29
- Gender Split
- 63% female / 37% male
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Sandy Chung, PHARMD, RPH prescribes most
Top Medicare Part D drugs by claim count, 2023
- Amlodipine Besylate
Amlodipine Besylate
40 claims
- Metformin Hcl
Metformin Hcl
40 claims
- Atorvastatin Calcium
Atorvastatin Calcium
34 claims
- Benazepril Hcl
Benazepril Hcl
30 claims
- Jantoven
Jantoven
23 claims
- Jardiance
Jardiance
22 claims
- Famotidine
Famotidine
18 claims
- Hydrochlorothiazide 14
Hydrochlorothiazide
14 claims
| Drug | Claims |
|---|---|
| Amlodipine Besylate | 40 |
| Metformin Hcl | 40 |
| Atorvastatin Calcium | 34 |
| Benazepril Hcl | 30 |
| Jantoven Warfarin Sodium | 23 |
| Jardiance Empagliflozin | 22 |
| Famotidine | 18 |
| Hydrochlorothiazide | 14 |
| Losartan Potassium | 13 |
| Glipizide | 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 Sandy Chung, PHARMD, RPH fits within the Ambulatory Care Pharmacist landscape nationally.
3,496
Ambulatory Care Pharmacist Providers in US
52
States with Ambulatory Care Pharmacist
492
Avg Claims per Provider
Sandy Chung, PHARMD, RPH's 521 claims are above 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 Chung.
Clare Adams
Mission Viejo, CA
Kristine Adzhemyan
Los Angeles, CA
Dr. Omar Ahmed
PHARMD
San Rafael, CA
Dr. Soo Ahn
PHARM.D.
Simi Valley, CA
Dr. Genevieve Aichelman
PHARM.D.
Lemoore, CA
Compare Ambulatory Care Pharmacist 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 Ambulatory Care Pharmacist 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.
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Frequently Asked Questions
What is Sandy Chung, PHARMD, RPH's specialty? ▼
Sandy Chung, PHARMD, RPH specializes in Ambulatory Care Pharmacist and practices in East Los Angeles, California. Credentials: PHARMD, RPH.
How much does Sandy Chung, PHARMD, RPH prescribe under Medicare Part D? ▼
In 2023, Sandy Chung, PHARMD, RPH wrote 521 Medicare Part D claims totaling $66K in drug costs for 138 beneficiaries.
Where is Sandy Chung, PHARMD, RPH located? ▼
Sandy Chung, PHARMD, RPH is located at 245 S FETTERLY AVE, East Los Angeles, CA, 90022. Phone: (805) 814-0913.
What is Sandy Chung, PHARMD, RPH's NPI number? ▼
Sandy Chung, PHARMD, RPH's National Provider Identifier (NPI) is 1538653530, issued on 06/21/2018.
Does Sandy Chung, PHARMD, RPH prescribe more brand-name or generic drugs? ▼
Sandy Chung, PHARMD, RPH's prescribing is 22% brand-name and 74% generic drugs by claim count, with $54K in brand drug costs.
How many Ambulatory Care Pharmacist providers are there in the US? ▼
There are 3,496 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 Sandy Chung, PHARMD, RPH prescribe most often? ▼
Based on 2023 Medicare Part D data, Sandy Chung, PHARMD, RPH's most frequently prescribed drugs include Amlodipine Besylate, Metformin Hcl, Atorvastatin Calcium. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Sandy Chung, PHARMD, RPH accept Medicare? ▼
Sandy Chung, PHARMD, RPH appears in CMS Medicare data with 521 Part D claims and 138 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Sandy Chung, PHARMD, RPH's credentials? ▼
Sandy Chung, PHARMD, RPH's NPI is 1538653530 with credentials PHARMD, RPH. 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
View source datasets and methodology notes
- 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.
Every figure on PlainDoctor is rendered directly from the federal CMS NPPES registry, Medicare Part D, MIPS, and Open Payments records, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of May 2026.