NPI registry status
Active
2026 NPPES data Pharmacist NPI 1023484540 PHARM.D.
Verify on CMS → Anchieh Ouyang, PHARM.D.
Pharmacist in Sacramento, 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 291,043 in 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
2K
Medicare Part D claims · 402 beneficiaries · Pharmacist avg: 135
Generic prescribing
55%
generic claims · 34% brand-name · higher generic rates reduce patient out-of-pocket costs
Source: CMS Medicare Part D Prescriber Public Use File, 2023
What the federal data shows
Anchieh Ouyang, PHARM.D. filed 1,845 Medicare Part D claims in 2023 as a Pharmacist in Sacramento, California, prescribing 55% generic.
- 2K
- Part D claims, 2023
- 55%
- generic prescribing
- ≥83rd
- pct by Part D claim volume (lower-bound band)
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.
CMS NPPES provider registry desk
NPI 1023484540 · Pharmacist
NPI-10 · ENUM-MID · TAX-MEGA · RX-MID · BOOK-MID · PHOTO-ENUM
- NPI-10 1023484540
- ENUM-MID 2015
- TAX-MEGA 291K Pharmacist
- RX-MID 1,845
- BOOK-MID 32,376 in California
- PHOTO-ENUM Caitlin Turnbull · 2015
Anchieh Ouyang, PHARM.D.'s Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
1,845 ≥ 83rd percentile 83% of 1,370,886 prescribers are in lower value bands
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.
The percentile is a conservative 100-claim band: it counts only prescribers in lower claim-volume bands. Medicare Part D claim volume is activity context, not a quality measure or recommendation. See methodology § corpus placement.
Source CMS Medicare Part D Prescriber Public Use File · 2023
What does the federal data show about Anchieh Ouyang, PHARM.D.?
Quality data not reportedPrimary specialty
Pharmacist
Medicare Part D claims
1,845 14× vs specialty avg
Specialty distribution in California
How 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 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).
Practice Address
Provider Details
| NPI | 1023484540 |
|---|---|
| Specialty | Pharmacist |
| Credentials | PHARM.D. |
| Gender | Female |
| NPI Issued | 08/19/2015 |
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 Anchieh Ouyang, PHARM.D.. To verify Anchieh Ouyang, 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.
Brand vs generic prescribing mix · Above average
Anchieh Ouyang, PHARM.D. - brand share 34.0%
Pharmacist average
34% brand-name claims vs 55% generic, on 1,845 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.
1,845
Total Claims
$364K
Total Drug Cost
402
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 5,722
- Total Day Supply
- 171,598
- Brand vs Generic
- 34% brand / 55% generic
- Brand Drug Cost
- $343K
- Generic Drug Cost
- $15K
Patient Demographics
- Average Patient Age
- 69.3 years
- Avg HCC Risk Score
- 1.27
- Gender Split
- 46% female / 54% male
- Age Distribution
- <65: 40, 65-74: 302, 75-84: 60, 85+: 0
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Anchieh Ouyang, PHARM.D. prescribes most
Top Medicare Part D drugs by claim count, 2023
- Atorvastatin Calcium
Atorvastatin Calcium
305 claims
- Metformin Hcl Er
Metformin Hcl Er
227 claims
- Humulin N
Humulin N
187 claims
- Metformin Hcl
Metformin Hcl
124 claims
- Glipizide 115
Glipizide
115 claims
- Jardiance 92
Jardiance
92 claims
- Ozempic 80
Ozempic
80 claims
- Glipizide Er 64
Glipizide Er
64 claims
| Drug | Claims |
|---|---|
| Atorvastatin Calcium | 305 |
| Metformin Hcl Er Metformin Hcl | 227 |
| Humulin N Insulin Nph Human Isophane | 187 |
| Metformin Hcl | 124 |
| Glipizide | 115 |
| Jardiance Empagliflozin | 92 |
| Ozempic Semaglutide | 80 |
| Glipizide Er Glipizide | 64 |
| Amlodipine Besylate | 36 |
| Simvastatin | 35 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Pharmacist Overview
How Anchieh Ouyang, PHARM.D. fits within the Pharmacist landscape nationally.
291,043
Pharmacist Providers in US
56
States with Pharmacist
135
Avg Claims per Provider
Anchieh Ouyang, PHARM.D.'s 1,845 claims are above the specialty average of 135.
Nationwide Pharmacist peers with similar MIPS or enrollment year
Two federal-record peer sets for Ouyang, both outside California so the neighborhoods are not geographic containment.
Same NPPES enumeration year (2015)
Same-specialty clinicians who entered the NPI registry in the same calendar year, outside this state.
Nearby Pharmacist Providers in California
Other clinicians with the same primary specialty enrolled in California, drawn from the same CMS NPPES roster as Ouyang.
One of 32,376 Pharmacist providers enrolled in California, 5 are shown here.
Dr. Caroline A-Haja
PHARM.D.
San Pedro, CA
Gayatri Aachi
Livermore, CA
Dr. Mahshid Aalam
PHARMD
Los Angeles, CA
Jaleh Aaliiveli
San Ramon, CA
Dr. Cassi Aarvig
RPH
Tracy, CA
Compare Pharmacist nationally: see state-by-state distribution →
Frequently Asked Questions
What is Anchieh Ouyang, PHARM.D.'s specialty? ▼
Anchieh Ouyang, PHARM.D. specializes in Pharmacist and practices in Sacramento, California. Credentials: PHARM.D..
How much does Anchieh Ouyang, PHARM.D. prescribe under Medicare Part D? ▼
In 2023, Anchieh Ouyang, PHARM.D. wrote 1,845 Medicare Part D claims totaling $364K in drug costs for 402 beneficiaries.
Where is Anchieh Ouyang, PHARM.D. located? ▼
Anchieh Ouyang, PHARM.D. is located at 6600 BRUCEVILLE RD, Sacramento, CA, 95823. Phone: (916) 688-2000.
What is Anchieh Ouyang, PHARM.D.'s NPI number? ▼
Anchieh Ouyang, PHARM.D.'s National Provider Identifier (NPI) is 1023484540, issued on 08/19/2015.
Does Anchieh Ouyang, PHARM.D. prescribe more brand-name or generic drugs? ▼
Anchieh Ouyang, PHARM.D.'s prescribing is 34% brand-name and 55% generic drugs by claim count, with $343K in brand drug costs.
How many Pharmacist providers are there in the US? ▼
There are 291,043 Pharmacist providers across 56 states in the US. The average Pharmacist provider writes 135 Medicare Part D claims per year.
What drugs does Anchieh Ouyang, PHARM.D. prescribe most often? ▼
Based on 2023 Medicare Part D data, Anchieh Ouyang, PHARM.D.'s most frequently prescribed drugs include Atorvastatin Calcium, Metformin Hcl Er, Humulin N. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Anchieh Ouyang, PHARM.D. accept Medicare? ▼
Anchieh Ouyang, PHARM.D. appears in CMS Medicare data with 1,845 Part D claims and 402 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Anchieh Ouyang, PHARM.D.'s credentials? ▼
Anchieh Ouyang, PHARM.D.'s NPI is 1023484540 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
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
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.