NPI registry status
Active
2026 NPPES data Dentist NPI 1033518212 DDS
Verify on CMS → Richard Sellen, DDS
Dentist in Menlo Park, 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 93,793 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
21
Medicare Part D claims · 19 beneficiaries · Dentist avg: 87
Industry payments
$865.84
9 payments · CMS Open Payments (Sunshine Act)
What the federal data shows
Richard Sellen, DDS filed 21 Medicare Part D claims in 2023 as a Dentist in Menlo Park, California.
- 21
- Part D claims, 2023
- $865.84
- industry payments (Sunshine Act)
- ≥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 Richard Sellen, DDS
Federal records show an active NPI with Medicare Part D prescribing activity — verifiable registry data, not a proprietary rating.
- Verified
NPI registry status
Active listing in the CMS National Provider Identifier Registry (NPI 1033518212), first enumerated 08/14/2014.
Source: CMS NPPES
- Reported
Medicare Part D participation
Filed 21 Medicare Part D prescription claims in the 2023 CMS public use file — indicates active Medicare prescribing participation.
Source: CMS Part D Prescriber PUF
- Reported
Industry payment transparency
$865.84 in reported industry payments (9 transfers) in 2024 under the federal Sunshine Act — disclosed transfers of value, not a quality rating.
Source: CMS Open Payments
- State context
State board disciplinary context
California statewide board action statistics are published annually — these figures describe aggregate state activity, not Richard Sellen, DDS'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 1033518212 · Dentist
NPI-10 · ENUM-MID · TAX-MEGA · RX-TRACE · BOOK-MID · PHOTO-ENUM
- NPI-10 1033518212
- ENUM-MID 2014
- TAX-MEGA 94K Dentist
- RX-TRACE 21
- BOOK-MID 14,698 in California
- PHOTO-ENUM Jeffrey Ryba · 2014
Richard Sellen, DDS's Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
21 ≥ 0th percentile 0% 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 Richard Sellen, DDS?
Quality data not reportedPrimary specialty
Dentist
Medicare Part D claims
21 76% 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 | 1033518212 |
|---|---|
| Specialty | Dentist |
| Credentials | DDS |
| Gender | Male |
| NPI Issued | 08/14/2014 |
Industry payments received (2024) - CMS Open Payments transparency data
The federal Physician Payments Sunshine Act (part of the Affordable Care Act) requires drug and medical-device manufacturers + group purchasing organizations to publicly report payments and other transfers of value to physicians and teaching hospitals. The data below covers 2024 for Richard Sellen, DDS. Source: openpaymentsdata.cms.gov.
Total received
$866
Largest payer
Ultradent Products Inc
Most common payment type
Gift
Industry payments are not necessarily indicators of bias, they include research funding, consulting fees for evidence-based work, royalties for inventions, food at conferences, and similar items. The disclosure exists for transparency. Read our methodology for how we interpret this data.
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 Richard Sellen, DDS. To verify Richard Sellen, DDS'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.
21
Total Claims
$146
Total Drug Cost
19
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 23
- Total Day Supply
- 189
- Generic Drug Cost
- $124
- Antibiotic Claims
- 18
Patient Demographics
- Average Patient Age
- 79.1 years
- Avg HCC Risk Score
- 1.19
- Age Distribution
- <65: 0, 65-74: N/A, 75-84: N/A, 85+: N/A
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
| Drug | Claims |
|---|---|
| Amoxicillin | 15 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Dentist Overview
How Richard Sellen, DDS fits within the Dentist landscape nationally.
93,793
Dentist Providers in US
56
States with Dentist
87
Avg Claims per Provider
Richard Sellen, DDS's 21 claims are below the specialty average of 87.
Nationwide Dentist peers with similar MIPS or enrollment year
Two federal-record peer sets for Sellen, both outside California so the neighborhoods are not geographic containment.
Same NPPES enumeration year (2014)
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 Sellen.
One of 14,698 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 Richard Sellen, DDS's specialty? ▼
Richard Sellen, DDS specializes in Dentist and practices in Menlo Park, California. Credentials: DDS.
How much does Richard Sellen, DDS prescribe under Medicare Part D? ▼
In 2023, Richard Sellen, DDS wrote 21 Medicare Part D claims totaling $146 in drug costs for 19 beneficiaries.
Where is Richard Sellen, DDS located? ▼
Richard Sellen, DDS is located at 150 MIDDLEFIELD RD, Menlo Park, CA, 94025. Phone: (650) 328-2072.
What is Richard Sellen, DDS's NPI number? ▼
Richard Sellen, DDS's National Provider Identifier (NPI) is 1033518212, issued on 08/14/2014.
How many Dentist providers are there in the US? ▼
There are 93,793 Dentist providers across 56 states in the US. The average Dentist provider writes 87 Medicare Part D claims per year.
What drugs does Richard Sellen, DDS prescribe most often? ▼
Based on 2023 Medicare Part D data, Richard Sellen, DDS's most frequently prescribed drugs include Amoxicillin. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Richard Sellen, DDS accept Medicare? ▼
Richard Sellen, DDS appears in CMS Medicare data with 21 Part D claims and 19 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Richard Sellen, DDS's credentials? ▼
Richard Sellen, DDS's NPI is 1033518212 with credentials DDS. 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.