NPI registry status
Active
2026 NPPES data Dentist NPI 1255409421 D.D.S
Verify on CMS → Iyad Altwal, D.D.S
Dentist in Stockton, 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 95,573 in Dentist, 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
362
Medicare Part D claims · 227 beneficiaries · Dentist avg: 90
Source: CMS Medicare Part D Prescriber Public Use File, 2024
What the federal data shows
Iyad Altwal, D.D.S filed 362 Medicare Part D claims in 2024 as a Dentist in Stockton, California.
- 362
- Part D claims, 2024
- ≥56th
- 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 Iyad Altwal, D.D.S
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 1255409421), first enumerated 12/04/2006.
Source: CMS NPPES
- Reported
Medicare Part D participation
Filed 362 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 Iyad Altwal, D.D.S'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 1255409421 · Dentist
NPI-10 · ENUM-LEGACY · TAX-MEGA · RX-LIGHT · BOOK-MID · PHOTO-ENUM
- NPI-10 1255409421
- ENUM-LEGACY 2006
- TAX-MEGA 96K Dentist
- RX-LIGHT 362
- BOOK-MID 14,906 in California
- PHOTO-ENUM Susan Anderson, DDS · 2006
Iyad Altwal, D.D.S's Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2024, across all CMS prescribers nationally
362 ≥ 56th percentile 56% 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 Iyad Altwal, D.D.S?
Quality data not reportedPrimary specialty
Dentist
Medicare Part D claims
362 302% vs specialty avg
Specialty distribution in California
How Dentist 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 Dentist. 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 | 1255409421 |
|---|---|
| Specialty | Dentist |
| Credentials | D.D.S |
| Gender | Male |
| NPI Issued | 12/04/2006 |
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 Iyad Altwal, D.D.S. To verify Iyad Altwal, D.D.S'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 2024.
362
Total Claims
$1K
Total Drug Cost
227
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 362
- Total Day Supply
- 2,319
- Brand Drug Cost
- $0
- Generic Drug Cost
- $1K
- Antibiotic Claims
- 111
Patient Demographics
- Average Patient Age
- 69.5 years
- Avg HCC Risk Score
- 1.48
- Gender Split
- 52% female / 48% male
- Age Distribution
- <65: 47, 65-74: 116, 75-84: 49, 85+: 15
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2024. Based on Medicare Part D data only.
What Iyad Altwal, D.D.S prescribes most
Top Medicare Part D drugs by claim count, 2024
- Ibuprofen
Ibuprofen
222 claims
- Amoxicillin 87
Amoxicillin
87 claims
- Clindamycin Hcl 18
Clindamycin Hcl
18 claims
- Chlorhexidine Gluc… 16
Chlorhexidine Gluconate
16 claims
| Drug | Claims |
|---|---|
| Ibuprofen | 222 |
| Amoxicillin | 87 |
| Clindamycin Hcl | 18 |
| Chlorhexidine Gluconate | 16 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Dentist Overview
How Iyad Altwal, D.D.S fits within the Dentist landscape nationally.
95,573
Dentist Providers in US
56
States with Dentist
90
Avg Claims per Provider
Iyad Altwal, D.D.S's 362 claims are above the specialty average of 90.
Nationwide Dentist peers with similar MIPS or enrollment year
Two federal-record peer sets for Altwal, both outside California so the neighborhoods are not geographic containment.
Same NPPES enumeration year (2006)
Same-specialty clinicians who entered the NPI registry in the same calendar year, outside this state.
Nearby Dentist Providers in California
Other clinicians with the same primary specialty enrolled in California, drawn from the same CMS NPPES roster as Altwal.
One of 14,906 Dentist providers enrolled in California, 5 are shown here.
Chantelle Aabedi
Los Angeles, CA
Dr. Sohrab Aalam
DMD
Irvine, CA
Dr. Rick Aaronian
DDS
Fresno, CA
Dr. Michael Aaronson
DDS
San Rafael, CA
Dr. Autumn Abadesco
DDS
La Puente, CA
Compare Dentist nationally: see state-by-state distribution →
Frequently Asked Questions
What is Iyad Altwal, D.D.S's specialty? ▼
Iyad Altwal, D.D.S specializes in Dentist and practices in Stockton, California. Credentials: D.D.S.
How much does Iyad Altwal, D.D.S prescribe under Medicare Part D? ▼
In 2024, Iyad Altwal, D.D.S wrote 362 Medicare Part D claims totaling $1K in drug costs for 227 beneficiaries.
Where is Iyad Altwal, D.D.S located? ▼
Iyad Altwal, D.D.S is located at 678 N WILSON WAY STE D, Stockton, CA, 95205. Phone: (209) 937-9000.
What is Iyad Altwal, D.D.S's NPI number? ▼
Iyad Altwal, D.D.S's National Provider Identifier (NPI) is 1255409421, issued on 12/04/2006.
How many Dentist providers are there in the US? ▼
There are 95,573 Dentist providers across 56 states in the US. The average Dentist provider writes 90 Medicare Part D claims per year.
What drugs does Iyad Altwal, D.D.S prescribe most often? ▼
Based on 2024 Medicare Part D data, Iyad Altwal, D.D.S's most frequently prescribed drugs include Ibuprofen, Amoxicillin, Clindamycin Hcl. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Iyad Altwal, D.D.S accept Medicare? ▼
Iyad Altwal, D.D.S appears in CMS Medicare data with 362 Part D claims and 227 Medicare beneficiaries in 2024. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Iyad Altwal, D.D.S's credentials? ▼
Iyad Altwal, D.D.S's NPI is 1255409421 with credentials D.D.S. 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.