NPI registry status
Active
2026 NPPES data Periodontics NPI 1629118294 DMD
Verify on CMS → Nathan Shapiro, DMD
Periodontics in Ventura, 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 6,062 in Periodontics, 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
305
Medicare Part D claims · 87 beneficiaries · Periodontics avg: 264
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
Nathan Shapiro, DMD filed 305 Medicare Part D claims in 2023 as a Periodontics in Ventura, California.
- 305
- Part D claims, 2023
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.
Nathan Shapiro, DMD's Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
305 Top 43% higher than 57% 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 Nathan Shapiro, DMD?
Quality data not reportedPrimary specialty
Periodontics
Medicare Part D claims
305 16% vs specialty avg
Specialty distribution in California
How Periodontics 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 Periodontics. 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).
Nathan Shapiro, DMD appears in the CMS NPPES registry as a Periodontics provider holding DMD credentials at 5500 TELEGRAPH RD, Ventura, CA, 93003, with a listed phone of (805) 644-5619. NPI 1629118294 was issued on 02/06/2007.
Medicare Part D records for calendar year 2023 show 305 prescription claims written by this provider, covering 87 Medicare beneficiaries and totaling roughly $2K in drug spend, with an opioid prescribing rate of 23.0%.
Periodontics is a mid-sized specialty nationwide, with 6,062 enrolled providers across 53 states and an average of 264 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 | 1629118294 |
|---|---|
| Specialty | Periodontics |
| Credentials | DMD |
| Gender | Male |
| NPI Issued | 02/06/2007 |
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 Nathan Shapiro, DMD. To verify Nathan Shapiro, DMD'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 2023.
305
Total Claims
$2K
Total Drug Cost
87
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 324
- Total Day Supply
- 3,952
- Brand Drug Cost
- $0
- Generic Drug Cost
- $2K
- Opioid Claims
- 70 (23.0% rate)
- Antibiotic Claims
- 115
Patient Demographics
- Average Patient Age
- 73.4 years
- Avg HCC Risk Score
- 0.81
- Gender Split
- 60% female / 40% male
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Nathan Shapiro, DMD prescribes most
Top Medicare Part D drugs by claim count, 2023
- Chlorhexidine Gluc…
Chlorhexidine Gluconate
94 claims
- Amoxicillin
Amoxicillin
93 claims
- Hydrocodone-Acetam…
Hydrocodone-Acetaminophen
70 claims
- Azithromycin 16
Azithromycin
16 claims
- Dexamethasone 11
Dexamethasone
11 claims
| Drug | Claims |
|---|---|
| Chlorhexidine Gluconate | 94 |
| Amoxicillin | 93 |
| Hydrocodone-Acetaminophen Hydrocodone/Acetaminophen | 70 |
| Azithromycin | 16 |
| Dexamethasone | 11 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Periodontics Overview
How Nathan Shapiro, DMD fits within the Periodontics landscape nationally.
6,062
Periodontics Providers in US
53
States with Periodontics
264
Avg Claims per Provider
Nathan Shapiro, DMD's 305 claims are above the specialty average of 264.
Nearby Periodontics Providers in California
Other clinicians with the same primary specialty enrolled in California, drawn from the same CMS NPPES roster as Shapiro.
Dr. Bruce Abe
D.D.S.
San Diego, CA
Dr. Kenneth Abe
DDS
Los Altos, CA
Dr. Michael Abelson
D.D.S.,M.S.
Valencia, CA
Dr. Genevieve Abi-Nahed
DMD
San Diego, CA
Dr. Marwa Abulhasan
DMD, MS, MMM
Los Angeles, CA
Compare Periodontics 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 Periodontics 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.
Healthcare Guides
Learn more about finding, verifying, and understanding healthcare providers.
How to Find a Doctor
Step-by-step guide to choosing a provider
Verify Credentials
Check NPI, board certification & license status
Medical Specialties Explained
Who treats what and how specialties differ
Understanding Medicare Claims Data
What prescribing data reveals about a provider
In-Network vs Out-of-Network
How insurance networks affect your costs
Telehealth Guide
Virtual care options and coverage in 2026
Explore California
Frequently Asked Questions
What is Nathan Shapiro, DMD's specialty? ▼
Nathan Shapiro, DMD specializes in Periodontics and practices in Ventura, California. Credentials: DMD.
How much does Nathan Shapiro, DMD prescribe under Medicare Part D? ▼
In 2023, Nathan Shapiro, DMD wrote 305 Medicare Part D claims totaling $2K in drug costs for 87 beneficiaries.
Where is Nathan Shapiro, DMD located? ▼
Nathan Shapiro, DMD is located at 5500 TELEGRAPH RD, Ventura, CA, 93003. Phone: (805) 644-5619.
What is Nathan Shapiro, DMD's NPI number? ▼
Nathan Shapiro, DMD's National Provider Identifier (NPI) is 1629118294, issued on 02/06/2007.
Does Nathan Shapiro, DMD prescribe opioids? ▼
Yes, Nathan Shapiro, DMD had 70 opioid claims in 2023 with an opioid prescribing rate of 23.0%.
How many Periodontics providers are there in the US? ▼
There are 6,062 Periodontics providers across 53 states in the US. The average Periodontics provider writes 264 Medicare Part D claims per year.
What drugs does Nathan Shapiro, DMD prescribe most often? ▼
Based on 2023 Medicare Part D data, Nathan Shapiro, DMD's most frequently prescribed drugs include Chlorhexidine Gluconate, Amoxicillin, Hydrocodone-Acetaminophen. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Nathan Shapiro, DMD accept Medicare? ▼
Nathan Shapiro, DMD appears in CMS Medicare data with 305 Part D claims and 87 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Nathan Shapiro, DMD's credentials? ▼
Nathan Shapiro, DMD's NPI is 1629118294 with credentials DMD. 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.