NPI registry status
Active
2026 NPPES data Foot & Ankle Surgery Podiatrist NPI 1841599404 D.P.M
Verify on CMS → Ryan Diaz, D.P.M
Foot & Ankle Surgery Podiatrist in San Diego, 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 8,920 in Foot & Ankle Surgery Podiatrist, 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
361
Medicare Part D claims · 210 beneficiaries · Foot & Ankle Surgery Podiatrist avg: 309
Generic prescribing
96%
generic claims · 4% brand-name · higher generic rates reduce patient out-of-pocket costs
Industry payments
$242.66
2 payments · CMS Open Payments (Sunshine Act)
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
Ryan Diaz, D.P.M filed 361 Medicare Part D claims in 2023 as a Foot & Ankle Surgery Podiatrist in San Diego, California, prescribing 96% generic.
- 361
- Part D claims, 2023
- 96%
- generic prescribing
- $242.66
- industry payments (Sunshine Act)
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.
Ryan Diaz, D.P.M's Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
361 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 Ryan Diaz, D.P.M?
Quality data not reportedPrimary specialty
Foot & Ankle Surgery Podiatrist
Medicare Part D claims
361 17% vs specialty avg
Specialty distribution in California
How Foot & Ankle Surgery Podiatrist 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 Foot & Ankle Surgery Podiatrist. 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).
Ryan Diaz, D.P.M appears in the CMS NPPES registry as a Foot & Ankle Surgery Podiatrist provider holding D.P.M credentials at 15004 INNOVATION DR, San Diego, CA, 92128, with a listed phone of (858) 605-7147. NPI 1841599404 was issued on 03/22/2011.
Medicare Part D records for calendar year 2023 show 361 prescription claims written by this provider, covering 210 Medicare beneficiaries and totaling roughly $21K in drug spend, split 4% brand-name and 96% generic by claim count, with an opioid prescribing rate of 13.3%.
Foot & Ankle Surgery Podiatrist is a mid-sized specialty nationwide, with 8,920 enrolled providers across 53 states and an average of 309 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 | 1841599404 |
|---|---|
| Specialty | Foot & Ankle Surgery Podiatrist |
| Credentials | D.P.M |
| Gender | Male |
| NPI Issued | 03/22/2011 |
Hospital and facility affiliations
Facilities where Ryan Diaz, D.P.M 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.
Scripps Health
La Jolla, 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 Ryan Diaz, D.P.M. Source: openpaymentsdata.cms.gov.
Total received
$243
Largest payer
Stryker Corporation
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 Ryan Diaz, D.P.M. To verify Ryan Diaz, D.P.M'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 · Generic-heavy
Ryan Diaz, D.P.M - brand share 4.0%
Foot & Ankle Surgery Podiatrist average
4% brand-name claims vs 96% generic, on 361 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.
361
Total Claims
$21K
Total Drug Cost
210
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 461
- Total Day Supply
- 9,304
- Brand vs Generic
- 4% brand / 96% generic
- Brand Drug Cost
- $15K
- Generic Drug Cost
- $6K
- Opioid Claims
- 48 (13.3% rate)
- Antibiotic Claims
- 74
Patient Demographics
- Average Patient Age
- 73.9 years
- Avg HCC Risk Score
- 1.39
- Gender Split
- 50% female / 50% male
- Age Distribution
- <65: 13, 65-74: 104, 75-84: 71, 85+: 22
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Ryan Diaz, D.P.M prescribes most
Top Medicare Part D drugs by claim count, 2023
- Ammonium Lactate
Ammonium Lactate
39 claims
- Neomycin-Polymyxin…
Neomycin-Polymyxin-Hydrocort
36 claims
- Meloxicam
Meloxicam
29 claims
- Terbinafine Hcl
Terbinafine Hcl
29 claims
- Doxycycline Monohy…
Doxycycline Monohydrate
28 claims
- Ketoconazole
Ketoconazole
21 claims
- Methylprednisolone
Methylprednisolone
18 claims
- Amoxicillin-Clavul…
Amoxicillin-Clavulanate Potass
17 claims
| Drug | Claims |
|---|---|
| Ammonium Lactate | 39 |
| Neomycin-Polymyxin-Hydrocort Neomycin/Polymyxin B/Hydrocort | 36 |
| Meloxicam | 29 |
| Terbinafine Hcl | 29 |
| Doxycycline Monohydrate | 28 |
| Ketoconazole | 21 |
| Methylprednisolone | 18 |
| Amoxicillin-Clavulanate Potass Amoxicillin/Potassium Clav | 17 |
| Hydrocodone-Acetaminophen Hydrocodone/Acetaminophen | 15 |
| Tramadol Hcl | 15 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Foot & Ankle Surgery Podiatrist Overview
How Ryan Diaz, D.P.M fits within the Foot & Ankle Surgery Podiatrist landscape nationally.
8,920
Foot & Ankle Surgery Podiatrist Providers in US
53
States with Foot & Ankle Surgery Podiatrist
309
Avg Claims per Provider
Ryan Diaz, D.P.M's 361 claims are above the specialty average of 309.
Nearby Foot & Ankle Surgery Podiatrist Providers in California
Other clinicians with the same primary specialty enrolled in California, drawn from the same CMS NPPES roster as Diaz.
Dr. Steven Abadi
DPM
Palo Alto, CA
Dr. Ebram Abdelmalak
DPM
El Monte, CA
Dr. Joseph Abdelmalak
DPM
Oxnard, CA
Dr. Lant Abernathy
DPM
San Luis Obispo, CA
Dr. John Abordo
DPM
Merced, CA
Compare Foot & Ankle Surgery Podiatrist 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 Foot & Ankle Surgery Podiatrist 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 Ryan Diaz, D.P.M's specialty? ▼
Ryan Diaz, D.P.M specializes in Foot & Ankle Surgery Podiatrist and practices in San Diego, California. Credentials: D.P.M.
How much does Ryan Diaz, D.P.M prescribe under Medicare Part D? ▼
In 2023, Ryan Diaz, D.P.M wrote 361 Medicare Part D claims totaling $21K in drug costs for 210 beneficiaries.
Where is Ryan Diaz, D.P.M located? ▼
Ryan Diaz, D.P.M is located at 15004 INNOVATION DR, San Diego, CA, 92128. Phone: (858) 605-7147.
What is Ryan Diaz, D.P.M's NPI number? ▼
Ryan Diaz, D.P.M's National Provider Identifier (NPI) is 1841599404, issued on 03/22/2011.
Does Ryan Diaz, D.P.M prescribe more brand-name or generic drugs? ▼
Ryan Diaz, D.P.M's prescribing is 4% brand-name and 96% generic drugs by claim count, with $15K in brand drug costs.
Does Ryan Diaz, D.P.M prescribe opioids? ▼
Yes, Ryan Diaz, D.P.M had 48 opioid claims in 2023 with an opioid prescribing rate of 13.3%.
How many Foot & Ankle Surgery Podiatrist providers are there in the US? ▼
There are 8,920 Foot & Ankle Surgery Podiatrist providers across 53 states in the US. The average Foot & Ankle Surgery Podiatrist provider writes 309 Medicare Part D claims per year.
What drugs does Ryan Diaz, D.P.M prescribe most often? ▼
Based on 2023 Medicare Part D data, Ryan Diaz, D.P.M's most frequently prescribed drugs include Ammonium Lactate, Neomycin-Polymyxin-Hydrocort, Meloxicam. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Ryan Diaz, D.P.M accept Medicare? ▼
Ryan Diaz, D.P.M appears in CMS Medicare data with 361 Part D claims and 210 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Ryan Diaz, D.P.M's credentials? ▼
Ryan Diaz, D.P.M's NPI is 1841599404 with credentials D.P.M. 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.