NPI registry status
Active
2026 NPPES data Pharmacist NPI 1356657886 DOCTOR OF PHARMACY
Verify on CMS → Dara Siassi, DOCTOR OF PHARMACY
Pharmacist in Santa Clarita, 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 294,436 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
74
Medicare Part D claims · 74 beneficiaries · Pharmacist avg: 127
Generic prescribing
26%
generic claims · 74% brand-name · higher generic rates reduce patient out-of-pocket costs
Source: CMS Medicare Part D Prescriber Public Use File, 2024
What the federal data shows
Dara Siassi, DOCTOR OF PHARMACY filed 74 Medicare Part D claims in 2024 as a Pharmacist in Santa Clarita, California, prescribing 26% generic.
- 74
- Part D claims, 2024
- 26%
- generic prescribing
- ≥0th
- 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.
Federal trust snapshot
What official records show about Dara Siassi, DOCTOR OF PHARMACY
Bare NPI registry listing — limited federal enrichment beyond basic enumeration. Verify all credentials with official sources.
- Verified
NPI registry status
Active listing in the CMS National Provider Identifier Registry (NPI 1356657886), first enumerated 08/21/2010.
Source: CMS NPPES
- Reported
Medicare Part D participation
Filed 74 Medicare Part D prescription claims in the 2023 CMS public use file — indicates active Medicare prescribing participation.
Source: CMS Part D Prescriber PUF
- State context
State board disciplinary context
California statewide board action statistics are published annually — these figures describe aggregate state activity, not Dara Siassi, DOCTOR OF PHARMACY's individual license status. Verify directly with the state medical board.
Source: MBC annual report 2023
- Not in federal data
Individual sanction lookup
PlainDoctor does not publish per-provider disciplinary determinations. Confirm current license and any individual actions through the state medical board or FSMB verification service.
Source: State medical board / FSMB
This trust snapshot summarizes only what appears in federal CMS/NPPES public records. It is not a composite score, star rating, patient review, or clinical recommendation. PlainDoctor never fabricates reviews or AggregateRating schema.
CMS NPPES provider registry desk
NPI 1356657886 · Pharmacist
NPI-10 · ENUM-MID · TAX-MEGA · RX-TRACE · BOOK-MID · PHOTO-ENUM
- NPI-10 1356657886
- ENUM-MID 2010
- TAX-MEGA 294K Pharmacist
- RX-TRACE 74
- BOOK-MID 32,698 in California
- PHOTO-ENUM Michael Dufour · 2010
Dara Siassi, DOCTOR OF PHARMACY's Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2024, across all CMS prescribers nationally
74 ≥ 0th percentile 0% of 1,416,883 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 · 2024
What does the federal data show about Dara Siassi, DOCTOR OF PHARMACY?
Quality data not reportedPrimary specialty
Pharmacist
Medicare Part D claims
74 42% 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 | 1356657886 |
|---|---|
| Specialty | Pharmacist |
| Credentials | DOCTOR OF PHARMACY |
| Gender | Male |
| NPI Issued | 08/21/2010 |
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 Dara Siassi, DOCTOR OF PHARMACY. To verify Dara Siassi, DOCTOR OF PHARMACY'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
Dara Siassi, DOCTOR OF PHARMACY - brand share 74.0%
Pharmacist average
74% brand-name claims vs 26% generic, on 74 2024 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 2024.
74
Total Claims
$13K
Total Drug Cost
74
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 74
- Total Day Supply
- 190
- Brand vs Generic
- 74% brand / 26% generic
- Brand Drug Cost
- $12K
- Generic Drug Cost
- $959
Patient Demographics
- Average Patient Age
- 77.9 years
- Avg HCC Risk Score
- 1.16
- Gender Split
- 62% female / 38% male
- Age Distribution
- <65: 0, 65-74: 22, 75-84: 40, 85+: 12
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2024. Based on Medicare Part D data only.
What Dara Siassi, DOCTOR OF PHARMACY prescribes most
Top Medicare Part D drugs by claim count, 2024
- Arexvy
Arexvy
26 claims
- Naloxone Hcl
Naloxone Hcl
19 claims
- Shingrix
Shingrix
12 claims
| Drug | Claims |
|---|---|
| Arexvy Rsvpref3 Antigen/As01e/Pf | 26 |
| Naloxone Hcl | 19 |
| Shingrix Varicella-Zoster Ge/As01b/Pf | 12 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Pharmacist Overview
How Dara Siassi, DOCTOR OF PHARMACY fits within the Pharmacist landscape nationally.
294,436
Pharmacist Providers in US
56
States with Pharmacist
127
Avg Claims per Provider
Dara Siassi, DOCTOR OF PHARMACY's 74 claims are below the specialty average of 127.
Nationwide Pharmacist peers with similar MIPS or enrollment year
Two federal-record peer sets for Siassi, both outside California so the neighborhoods are not geographic containment.
Same NPPES enumeration year (2010)
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 Siassi.
One of 32,698 Pharmacist providers enrolled in California, 5 are shown here.
Dr. Caroline A-Haja
PHARM.D.
San Pedro, CA
Gayatri Aachi
Livermore, CA
Dr. Adrian Karlos Aala
PHARMD, RPH
Hayward, CA
Dr. Mahshid Aalam
PHARMD
Los Angeles, CA
Jaleh Aaliiveli
San Ramon, CA
Compare Pharmacist nationally: see state-by-state distribution →
Frequently Asked Questions
What is Dara Siassi, DOCTOR OF PHARMACY's specialty? ▼
Dara Siassi, DOCTOR OF PHARMACY specializes in Pharmacist and practices in Santa Clarita, California. Credentials: DOCTOR OF PHARMACY.
How much does Dara Siassi, DOCTOR OF PHARMACY prescribe under Medicare Part D? ▼
In 2024, Dara Siassi, DOCTOR OF PHARMACY wrote 74 Medicare Part D claims totaling $13K in drug costs for 74 beneficiaries.
Where is Dara Siassi, DOCTOR OF PHARMACY located? ▼
Dara Siassi, DOCTOR OF PHARMACY is located at 23335 LYONS AVE, Santa Clarita, CA, 91355. Phone: (661) 259-5950.
What is Dara Siassi, DOCTOR OF PHARMACY's NPI number? ▼
Dara Siassi, DOCTOR OF PHARMACY's National Provider Identifier (NPI) is 1356657886, issued on 08/21/2010.
Does Dara Siassi, DOCTOR OF PHARMACY prescribe more brand-name or generic drugs? ▼
Dara Siassi, DOCTOR OF PHARMACY's prescribing is 74% brand-name and 26% generic drugs by claim count, with $12K in brand drug costs.
How many Pharmacist providers are there in the US? ▼
There are 294,436 Pharmacist providers across 56 states in the US. The average Pharmacist provider writes 127 Medicare Part D claims per year.
What drugs does Dara Siassi, DOCTOR OF PHARMACY prescribe most often? ▼
Based on 2024 Medicare Part D data, Dara Siassi, DOCTOR OF PHARMACY's most frequently prescribed drugs include Arexvy, Naloxone Hcl, Shingrix. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Dara Siassi, DOCTOR OF PHARMACY accept Medicare? ▼
Dara Siassi, DOCTOR OF PHARMACY appears in CMS Medicare data with 74 Part D claims and 74 Medicare beneficiaries in 2024. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Dara Siassi, DOCTOR OF PHARMACY's credentials? ▼
Dara Siassi, DOCTOR OF PHARMACY's NPI is 1356657886 with credentials DOCTOR OF PHARMACY. 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 (2024). 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 August 2026 (NPPES) / 2024 (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 August 2026.