NPI registry status
Active
2026 NPPES data Family Medicine Physician NPI 1831262880 MD
Verify on CMS → Ariel Martinez, MD
Family Medicine Physician in Watsonville, 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 147,760 in Family Medicine 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
13K
Medicare Part D claims · 637 beneficiaries · Family Medicine Physician avg: 3K
Generic prescribing
86%
generic claims · 12% brand-name · higher generic rates reduce patient out-of-pocket costs
MIPS score
26/100
▼ 58 pts below national avg 83.5 · Below average
Industry payments
$458.46
15 payments · CMS Open Payments (Sunshine Act)
Source: CMS Medicare Part D Prescriber Public Use File, 2023
What the federal data shows
Ariel Martinez, MD reported a CMS MIPS final score of 26/100 - below the 83.5 national average - and filed 13,258 Medicare Part D claims in 2023.
- 26/100
- MIPS score · -58 vs avg
- 13K
- Part D claims, 2023
- 86%
- generic prescribing
- 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.
CMS NPPES provider registry desk
NPI 1831262880 · Family Medicine Physician
NPI-10 · ENUM-LEGACY · TAX-MEGA · MIPS-LOW · RX-HEAVY · BOOK-MID · PHOTO-FINISH
- NPI-10 1831262880
- ENUM-LEGACY 2006
- TAX-MEGA 148K Family Medicine
- MIPS-LOW 26/100
- RX-HEAVY 13K claims
- BOOK-MID 15,933 in California
- PHOTO-FINISH Inna Kigel · ±0.0
MIPS final-score neighbourhood
Same-specialty nationwide peers by CMS final score, not geographic proximity
- Martinez · this …
Martinez · this provider
26 MIPS pts
- Padmini Gunadeva…
Padmini Gunadeva
26 MIPS pts
- Frank Greathouse…
Frank Greathouse
26 MIPS pts
- Floyd McIntyre ·…
Floyd McIntyre
26 MIPS pts
- Inna Kigel · near
Inna Kigel
26 MIPS pts
What this shows Nearest measured MIPS peers for this NUCC specialty (2023 performance year).
Ariel Martinez, MD's MIPS score vs every measured U.S. clinician
CMS Merit-based Incentive Payment System (MIPS) final score, 2023, the federal quality measure. Clinicians whose score CMS assigned without scoring any category are excluded.
26 ≥ 3rd percentile 3% of 454,083 measured providers are in lower value bands
Each bar is a band; taller bars hold more measured 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.
The percentile is a conservative whole-score-point band: it counts only measured clinicians in lower score bands. A CMS MIPS metric is not a recommendation or a clinical-quality rating by PlainDoctor. See methodology § corpus placement.
Source CMS Merit-based Incentive Payment System (MIPS) · 2023
Where Ariel Martinez, MD sits
This provider among family medicine physician peers
Across the 21,266 family medicine physician providers who report both Medicare Part D prescribing and a MIPS quality score, Ariel Martinez, MD writes more Part D claims than 94% of them and scores higher on MIPS quality than 3% - placing this provider in the high-volume, lower-quality quadrant. Volume reflects patient-panel size and specialty, not quality; the two axes are independent.
Each dot is one family medicine physician peer from a representative sample of 60; the gold marker is Ariel Martinez, MD. Source: CMS Medicare Part D Prescriber data and the CMS Merit-based Incentive Payment System, 2023.
✓
Board certification likely (heuristic, not verified)
Ariel Martinez, MD practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + MIPS quality reporting - 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 Ariel Martinez, MD?
Below national averagePrimary specialty
Family Medicine Physician
Medicare Part D claims
13,258 288% vs specialty avg
MIPS final score
26/100 57.5 pts vs avg
Specialty distribution in California
How Family Medicine Physician compares to other specialties among California providers
Medicare quality performance, MIPS
Ariel Martinez, MD's 2023 MIPS final score plotted against the Family Medicine Physician national average
- MIPS Final Score
- 26/100
- vs 83.5 national avg · 2023 performance year
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 | 1831262880 |
|---|---|
| Specialty | Family Medicine Physician |
| Credentials | MD |
| Gender | Male |
| NPI Issued | 11/16/2006 |
CMS Quality Score (MIPS)
Merit-based Incentive Payment System (MIPS) scores from CMS, 2023 performance year.
25.9815
Final Score
Measured-score avg: 83.5
0
Quality
86.605
Cost
Reporting: Individual
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 Ariel Martinez, MD. Source: openpaymentsdata.cms.gov.
Total received
$458
Largest payer
GlaxoSmithKline, LLC.
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 Ariel Martinez, MD. To verify Ariel Martinez, 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.
Brand vs generic prescribing mix · Typical
Ariel Martinez, MD - brand share 12.0%
Family Medicine Physician average
12% brand-name claims vs 86% generic, on 13,258 2023 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 2023.
13,258
Total Claims
$1.9M
Total Drug Cost
637
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 28,096
- Total Day Supply
- 817,871
- Brand vs Generic
- 12% brand / 86% generic
- Brand Drug Cost
- $1.5M
- Generic Drug Cost
- $420K
- Opioid Claims
- 19 (0.1% rate)
- Antibiotic Claims
- 583
Patient Demographics
- Average Patient Age
- 73.7 years
- Avg HCC Risk Score
- 1.21
- Gender Split
- 47% female / 53% male
- Age Distribution
- <65: 57, 65-74: 297, 75-84: 204, 85+: 79
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Ariel Martinez, MD prescribes most
Top Medicare Part D drugs by claim count, 2023
- Atorvastatin Calcium
Atorvastatin Calcium
908 claims
- Metformin Hcl
Metformin Hcl
598 claims
- Baclofen
Baclofen
485 claims
- Pantoprazole Sodium
Pantoprazole Sodium
429 claims
- Gabapentin 352
Gabapentin
352 claims
- Glipizide Er 340
Glipizide Er
340 claims
- Losartan Potassium 336
Losartan Potassium
336 claims
- Omeprazole 331
Omeprazole
331 claims
| Drug | Claims |
|---|---|
| Atorvastatin Calcium | 908 |
| Metformin Hcl | 598 |
| Baclofen | 485 |
| Pantoprazole Sodium | 429 |
| Gabapentin | 352 |
| Glipizide Er Glipizide | 340 |
| Losartan Potassium | 336 |
| Omeprazole | 331 |
| Rosuvastatin Calcium | 317 |
| Amlodipine Besylate | 309 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Family Medicine Physician Overview
How Ariel Martinez, MD fits within the Family Medicine Physician landscape nationally.
147,760
Family Medicine Physician Providers in US
56
States with Family Medicine Physician
3,418
Avg Claims per Provider
Ariel Martinez, MD's 13,258 claims are above the specialty average of 3,418.
Nationwide Family Medicine Physician peers with similar MIPS or enrollment year
Two federal-record peer sets for Martinez, both outside California so the neighborhoods are not geographic containment.
Similar MIPS final score
Nearest same-specialty clinicians by CMS MIPS final score (26 here).
Same NPPES enumeration year (2006)
Same-specialty clinicians who entered the NPI registry in the same calendar year, outside this state.
Nearby Family Medicine Physician Providers in California
Other clinicians with the same primary specialty enrolled in California, drawn from the same CMS NPPES roster as Martinez.
One of 15,933 Family Medicine Physician providers enrolled in California, 5 are shown here.
Dr. Omer Aba-Omer
MD
Santa Monica, CA
Dr. Michelle Ababa
MD
Wilmington, CA
Dr. Anna Tzeitel Abalos
MD
Roseville, CA
Dr. Adan Abarca
MD
Anaheim, CA
Dr. Lorraine Abate
M.D.
Sacramento, CA
Compare Family Medicine Physician nationally: see state-by-state distribution →
Frequently Asked Questions
What is Ariel Martinez, MD's specialty? ▼
Ariel Martinez, MD specializes in Family Medicine Physician and practices in Watsonville, California. Credentials: MD.
How much does Ariel Martinez, MD prescribe under Medicare Part D? ▼
In 2023, Ariel Martinez, MD wrote 13,258 Medicare Part D claims totaling $1.9M in drug costs for 637 beneficiaries.
What is Ariel Martinez, MD's Medicare quality score? ▼
Ariel Martinez, MD has a CMS MIPS Final Score of 26/100 (Quality: 0, Cost: 86.6). The average MIPS Final Score across the 454,083 clinicians with at least one published category score is 83.5; clinicians whose score CMS assigned without scoring any category are excluded from that average. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is Ariel Martinez, MD located? ▼
Ariel Martinez, MD is located at 1185 FREEDOM BLVD #1, Watsonville, CA, 95076. Phone: (831) 786-9250.
What is Ariel Martinez, MD's NPI number? ▼
Ariel Martinez, MD's National Provider Identifier (NPI) is 1831262880, issued on 11/16/2006.
Does Ariel Martinez, MD prescribe more brand-name or generic drugs? ▼
Ariel Martinez, MD's prescribing is 12% brand-name and 86% generic drugs by claim count, with $1.5M in brand drug costs.
Does Ariel Martinez, MD prescribe opioids? ▼
Yes, Ariel Martinez, MD had 19 opioid claims in 2023 with an opioid prescribing rate of 0.1%.
How many Family Medicine Physician providers are there in the US? ▼
There are 147,760 Family Medicine Physician providers across 56 states in the US. The average Family Medicine Physician provider writes 3,418 Medicare Part D claims per year.
What drugs does Ariel Martinez, MD prescribe most often? ▼
Based on 2023 Medicare Part D data, Ariel Martinez, MD's most frequently prescribed drugs include Atorvastatin Calcium, Metformin Hcl, Baclofen. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Ariel Martinez, MD accept Medicare? ▼
Ariel Martinez, MD appears in CMS Medicare data with 13,258 Part D claims and 637 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Ariel Martinez, MD's credentials? ▼
Ariel Martinez, MD's NPI is 1831262880 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.