NPI registry status
Active
2026 NPPES data Specialist NPI 1679569685 M.D.
Verify on CMS → James Diede, M.D.
Specialist in Phoenix, Arizona.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 69,567 in Specialist, 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
2K
Medicare Part D claims · 110 beneficiaries · Specialist avg: 2K
Generic prescribing
96%
generic claims · 4% brand-name · higher generic rates reduce patient out-of-pocket costs
Source: CMS Medicare Part D Prescriber Public Use File, 2024
What the federal data shows
James Diede, M.D. filed 1,936 Medicare Part D claims in 2024 as a Specialist in Phoenix, Arizona, prescribing 96% generic.
- 2K
- Part D claims, 2024
- 96%
- generic prescribing
- ≥83rd
- 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 James Diede, M.D.
Bare NPI registry listing — limited federal enrichment beyond basic enumeration. Verify all credentials with official sources.
- Verified
NPI registry status
Active listing in the CMS National Provider Identifier Registry (NPI 1679569685), first enumerated 09/26/2005.
Source: CMS NPPES
- Reported
Medicare Part D participation
Filed 1,936 Medicare Part D prescription claims in the 2023 CMS public use file — indicates active Medicare prescribing participation.
Source: CMS Part D Prescriber PUF
- 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 1679569685 · Specialist
NPI-10 · ENUM-LEGACY · TAX-MEGA · RX-MID · BOOK-LIGHT · PHOTO-ENUM
- NPI-10 1679569685
- ENUM-LEGACY 2005
- TAX-MEGA 70K Specialist
- RX-MID 1,936
- BOOK-LIGHT 959 in Arizona
- PHOTO-ENUM Robert Long · 2005
James Diede, M.D.'s Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2024, across all CMS prescribers nationally
1,936 ≥ 83rd percentile 83% of 1,416,883 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 · 2024
What does the federal data show about James Diede, M.D.?
Quality data not reportedPrimary specialty
Specialist
Medicare Part D claims
1,936 27% vs specialty avg
Specialty distribution in Arizona
How Specialist compares to other specialties among Arizona 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 Specialist. 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 | 1679569685 |
|---|---|
| Specialty | Specialist |
| Credentials | M.D. |
| Gender | Male |
| NPI Issued | 09/26/2005 |
Brand vs generic prescribing mix · Generic-heavy
James Diede, M.D. - brand share 4.0%
Specialist average
4% brand-name claims vs 96% generic, on 1,936 2024 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 2024.
1,936
Total Claims
$93K
Total Drug Cost
110
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 2,292.967
- Total Day Supply
- 66,206
- Brand vs Generic
- 4% brand / 96% generic
- Brand Drug Cost
- $42K
- Generic Drug Cost
- $51K
- Opioid Claims
- 1,100 (56.8% rate)
- Antibiotic Claims
- 24
Patient Demographics
- Average Patient Age
- 69.7 years
- Avg HCC Risk Score
- 1.77
- Gender Split
- 48% female / 52% male
- Age Distribution
- <65: 24, 65-74: 56, 75-84: N/A, 85+: N/A
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2024. Based on Medicare Part D data only.
What James Diede, M.D. prescribes most
Top Medicare Part D drugs by claim count, 2024
- Oxycodone Hcl
Oxycodone Hcl
282 claims
- Hydrocodone-Acetam…
Hydrocodone-Acetaminophen
276 claims
- Morphine Sulfate Er
Morphine Sulfate Er
147 claims
- Tramadol Hcl
Tramadol Hcl
119 claims
- Baclofen
Baclofen
116 claims
- Diclofenac Sodium 97
Diclofenac Sodium
97 claims
- Oxycodone-Acetamin… 97
Oxycodone-Acetaminophen
97 claims
- Methadone Hcl 95
Methadone Hcl
95 claims
| Drug | Claims |
|---|---|
| Oxycodone Hcl | 282 |
| Hydrocodone-Acetaminophen Hydrocodone/Acetaminophen | 276 |
| Morphine Sulfate Er Morphine Sulfate | 147 |
| Tramadol Hcl | 119 |
| Baclofen | 116 |
| Diclofenac Sodium | 97 |
| Oxycodone-Acetaminophen Oxycodone Hcl/Acetaminophen | 97 |
| Methadone Hcl | 95 |
| Gabapentin | 72 |
| Trazodone Hcl | 68 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Specialist Overview
How James Diede, M.D. fits within the Specialist landscape nationally.
69,567
Specialist Providers in US
55
States with Specialist
1,524
Avg Claims per Provider
James Diede, M.D.'s 1,936 claims are above the specialty average of 1,524.
Nationwide Specialist peers with similar MIPS or enrollment year
Two federal-record peer sets for Diede, both outside Arizona so the neighborhoods are not geographic containment.
Same NPPES enumeration year (2005)
Same-specialty clinicians who entered the NPI registry in the same calendar year, outside this state.
Nearby Specialist Providers in Arizona
Other clinicians with the same primary specialty enrolled in Arizona, drawn from the same CMS NPPES roster as Diede.
One of 959 Specialist providers enrolled in Arizona, 5 are shown here.
Dr. Michael Abeshaus
MD
Flagstaff, AZ
Dr. Howard Abrams
M.D.
Phoenix, AZ
Rashael Achinivu
Peoria, AZ
Claire Acuff
PTA
Avondale, AZ
Deborah Adams-Courtland
Prescott, AZ
Compare Specialist nationally: see state-by-state distribution →
Frequently Asked Questions
What is James Diede, M.D.'s specialty? ▼
James Diede, M.D. specializes in Specialist and practices in Phoenix, Arizona. Credentials: M.D..
How much does James Diede, M.D. prescribe under Medicare Part D? ▼
In 2024, James Diede, M.D. wrote 1,936 Medicare Part D claims totaling $93K in drug costs for 110 beneficiaries.
Where is James Diede, M.D. located? ▼
James Diede, M.D. is located at 11024 N 28TH DR, Phoenix, AZ, 85029. Phone: (602) 863-3924.
What is James Diede, M.D.'s NPI number? ▼
James Diede, M.D.'s National Provider Identifier (NPI) is 1679569685, issued on 09/26/2005.
Does James Diede, M.D. prescribe more brand-name or generic drugs? ▼
James Diede, M.D.'s prescribing is 4% brand-name and 96% generic drugs by claim count, with $42K in brand drug costs.
Does James Diede, M.D. prescribe opioids? ▼
Yes, James Diede, M.D. had 1,100 opioid claims in 2024 with an opioid prescribing rate of 56.8%.
How many Specialist providers are there in the US? ▼
There are 69,567 Specialist providers across 55 states in the US. The average Specialist provider writes 1,524 Medicare Part D claims per year.
What drugs does James Diede, M.D. prescribe most often? ▼
Based on 2024 Medicare Part D data, James Diede, M.D.'s most frequently prescribed drugs include Oxycodone Hcl, Hydrocodone-Acetaminophen, Morphine Sulfate Er. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does James Diede, M.D. accept Medicare? ▼
James Diede, M.D. appears in CMS Medicare data with 1,936 Part D claims and 110 Medicare beneficiaries in 2024. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify James Diede, M.D.'s credentials? ▼
James Diede, M.D.'s NPI is 1679569685 with credentials M.D.. 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 (2024). 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 August 2026 (NPPES) / 2024 (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 August 2026.