NPI registry status
Active
2026 NPPES data Surgery of the Hand (Surgery) Physician NPI 1992025407 MD
Verify on CMS → Grant Seiden, MD
Surgery of the Hand (Surgery) Physician in Oceanside, 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 398 in Surgery of the Hand (Surgery) Physician, 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
160
Medicare Part D claims · 119 beneficiaries · Surgery of the Hand (Surgery) Physician avg: 175
MIPS score
52.1/100
▼ 31 pts below national avg 83.1 · Mid-tier
Industry payments
$1.7K
16 payments · CMS Open Payments (Sunshine Act)
What the federal data shows
Grant Seiden, MD reported a CMS MIPS final score of 52.1/100 - below the 83.1 national average - and filed 160 Medicare Part D claims in 2023.
- 52.1/100
- MIPS score · -31 vs avg
- 160
- Part D claims, 2023
- Likely
- board-certified (heuristic)
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.
Grant Seiden, MD's MIPS score vs every scored U.S. clinician
CMS Merit-based Incentive Payment System (MIPS) final score, 2023, the federal quality measure
52 4th percentile higher than 4% of 477,587 scored providers
Each bar is a band; taller bars hold more scored providers. 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 Merit-based Incentive Payment System (MIPS) · 2023
Where Grant Seiden, MD sits
This provider among surgery of the hand (surgery) physician peers
Across the 114 surgery of the hand (surgery) physician providers who report both Medicare Part D prescribing and a MIPS quality score, Grant Seiden, MD writes more Part D claims than 49% of them and scores higher on MIPS quality than 10% - placing this provider in the lower-volume, lower-quality quadrant. Volume reflects patient-panel size and specialty, not quality; the two axes are independent.
Part D claim volume vs MIPS quality, by specialty percentile
Each dot is one surgery of the hand (surgery) physician peer from a representative sample of 60; the gold marker is Grant Seiden, MD. Source: CMS Medicare Part D Prescriber data and the CMS Merit-based Incentive Payment System, 2023.
✓
Board certification likely (heuristic, not verified)
Grant Seiden, MD practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + MIPS quality reporting + 1 hospital affiliation - signals consistent with board-certified status. For verified board certification, see CertificationMatters.org (the official ABMS public lookup).
What does the federal data show about Grant Seiden, MD?
Below national averagePrimary specialty
Surgery of the Hand (Surgery) Physician
Medicare Part D claims
160 9% vs specialty avg
MIPS final score
52.1/100 31 pts vs avg
Specialty distribution in California
How Surgery of the Hand (Surgery) Physician compares to other specialties among California providers
Medicare quality performance, MIPS
Grant Seiden, MD's 2023 MIPS final score plotted against the Surgery of the Hand (Surgery) Physician national average
- MIPS Final Score
- 52.1/100
- vs 83.1 national avg · 2023 performance year
MIPS final score (Surgery of the Hand (Surgery) Physician) - 52.1/100 vs national avg 83.1
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).
Grant Seiden, MD appears in the CMS NPPES registry as a Surgery of the Hand (Surgery) Physician provider holding MD credentials at 3905 WARING RD, Oceanside, CA, 92056, with a listed phone of (760) 724-9000. NPI 1992025407 was issued on 06/07/2010.
Medicare Part D records for calendar year 2023 show 160 prescription claims written by this provider, covering 119 Medicare beneficiaries and totaling roughly $746 in drug spend, with an opioid prescribing rate of 94.4%. On the CMS Merit-based Incentive Payment System, this provider earned a Final Score of 52.1/100 for the 2023 performance year (Quality 53.9, Cost 39), compared with the national average of 83.1.
Surgery of the Hand (Surgery) Physician is a narrow specialty nationwide, with 398 enrolled providers across 44 states and an average of 175 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 | 1992025407 |
|---|---|
| Specialty | Surgery of the Hand (Surgery) Physician |
| Credentials | MD |
| Gender | Male |
| NPI Issued | 06/07/2010 |
CMS Quality Score (MIPS)
Merit-based Incentive Payment System (MIPS) scores from CMS, 2023 performance year.
52.1246
Final Score
Avg: 83.1
53.9079
Quality
39.0074
Cost
37
Promoting Interoperability
Reporting: Group practice
Hospital and facility affiliations
Facilities where Grant Seiden, MD bills Medicare from. Star ratings (1-5) are CMS Hospital Compare's "Hospital overall rating" - a composite of mortality, readmission, patient experience, safety, timely care, and efficient use of medical imaging measures. Source: CMS Care Compare.
Tri-City Orthopaedic Surgery Medical Group Inc.
Oceanside, CA
Affiliations sourced from CMS Doctors and Clinicians National Downloadable File; hospital ratings from CMS Hospital General Information dataset (cross-referenced by facility name + state).
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 Grant Seiden, MD. Source: openpaymentsdata.cms.gov.
Total received
$1.7K
Largest payer
Trimed, Inc.
Most common payment type
Food and Beverage
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 Grant Seiden, MD. To verify Grant Seiden, MD'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.
160
Total Claims
$746
Total Drug Cost
119
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 160
- Total Day Supply
- 749
- Generic Drug Cost
- $736
- Opioid Claims
- 151 (94.4% rate)
Patient Demographics
- Average Patient Age
- 73.0 years
- Avg HCC Risk Score
- 1.06
- 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 Grant Seiden, MD prescribes most
Top Medicare Part D drugs by claim count, 2023
- Tramadol Hcl
Tramadol Hcl
72 claims
- Hydrocodone-Acetam…
Hydrocodone-Acetaminophen
51 claims
- Oxycodone-Acetamin… 19
Oxycodone-Acetaminophen
19 claims
| Drug | Claims |
|---|---|
| Tramadol Hcl | 72 |
| Hydrocodone-Acetaminophen Hydrocodone/Acetaminophen | 51 |
| Oxycodone-Acetaminophen Oxycodone Hcl/Acetaminophen | 19 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
More Surgery of the Hand (Surgery) Physician in CA →
All providers in California →
Compare specialties →
Surgery of the Hand (Surgery) Physician Overview
How Grant Seiden, MD fits within the Surgery of the Hand (Surgery) Physician landscape nationally.
398
Surgery of the Hand (Surgery) Physician Providers in US
44
States with Surgery of the Hand (Surgery) Physician
175
Avg Claims per Provider
Grant Seiden, MD's 160 claims are below the specialty average of 175.
Nearby Surgery of the Hand (Surgery) Physician Providers in California
Other clinicians with the same primary specialty enrolled in California, drawn from the same CMS NPPES roster as Seiden.
Dr. Frederick Abruzzo
M.D.
San Francisco, CA
Dr. Ricardo Avena
M.D.
Fresno, CA
Dr. Nicholas Caggiano
MD
San Luis Obispo, CA
Dr. Walter Chang
MD
Fontana, CA
Dr. Tancredi Damore
MD
Corte Madera, CA
Compare Surgery of the Hand (Surgery) Physician 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 Surgery of the Hand (Surgery) Physician 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.
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Frequently Asked Questions
What is Grant Seiden, MD's specialty? ▼
Grant Seiden, MD specializes in Surgery of the Hand (Surgery) Physician and practices in Oceanside, California. Credentials: MD.
How much does Grant Seiden, MD prescribe under Medicare Part D? ▼
In 2023, Grant Seiden, MD wrote 160 Medicare Part D claims totaling $746 in drug costs for 119 beneficiaries.
What is Grant Seiden, MD's Medicare quality score? ▼
Grant Seiden, MD has a CMS MIPS Final Score of 52.1/100 (Quality: 53.9, Cost: 39). The national average MIPS Final Score is 83.1. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is Grant Seiden, MD located? ▼
Grant Seiden, MD is located at 3905 WARING RD, Oceanside, CA, 92056. Phone: (760) 724-9000.
What is Grant Seiden, MD's NPI number? ▼
Grant Seiden, MD's National Provider Identifier (NPI) is 1992025407, issued on 06/07/2010.
Does Grant Seiden, MD prescribe opioids? ▼
Yes, Grant Seiden, MD had 151 opioid claims in 2023 with an opioid prescribing rate of 94.4%.
How many Surgery of the Hand (Surgery) Physician providers are there in the US? ▼
There are 398 Surgery of the Hand (Surgery) Physician providers across 44 states in the US. The average Surgery of the Hand (Surgery) Physician provider writes 175 Medicare Part D claims per year.
What drugs does Grant Seiden, MD prescribe most often? ▼
Based on 2023 Medicare Part D data, Grant Seiden, MD's most frequently prescribed drugs include Tramadol Hcl, Hydrocodone-Acetaminophen, Oxycodone-Acetaminophen. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Grant Seiden, MD accept Medicare? ▼
Grant Seiden, MD appears in CMS Medicare data with 160 Part D claims and 119 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Grant Seiden, MD's credentials? ▼
Grant Seiden, MD's NPI is 1992025407 with credentials MD. 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.
- Quality Performance
- CMS Merit-based Incentive Payment System (MIPS) - 2023 performance year.
- 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.