NPI registry status
Active
2026 NPPES data Endocrinology, Diabetes & Metabolism Physician NPI 1811059660 M.D.
Verify on CMS → James Speed, M.D.
Endocrinology, Diabetes & Metabolism Physician in Greeley, Colorado.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 7,871 in Endocrinology, Diabetes & Metabolism 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
2K
Medicare Part D claims · 355 beneficiaries · Endocrinology, Diabetes & Metabolism Physician avg: 3K
Generic prescribing
47%
generic claims · 45% brand-name · higher generic rates reduce patient out-of-pocket costs
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
James Speed, M.D. filed 1,726 Medicare Part D claims in 2023 as a Endocrinology, Diabetes & Metabolism Physician in Greeley, Colorado, prescribing 47% generic.
- 2K
- Part D claims, 2023
- 47%
- generic prescribing
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.
James Speed, M.D.'s Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
1,726 Top 17% higher than 83% 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
◑
Board-eligible specialty (heuristic, not verified)
James Speed, M.D. practices in an ABMS-board-eligible specialty but we don't have enough CMS-participation signals to confirm active board-certified status. Consult CertificationMatters.org (the official ABMS public lookup).
What does the federal data show about James Speed, M.D.?
Quality data not reportedPrimary specialty
Endocrinology, Diabetes & Metabolism Physician
Medicare Part D claims
1,726 35% vs specialty avg
Specialty distribution in Colorado
How Endocrinology, Diabetes & Metabolism Physician compares to other specialties among Colorado 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 Endocrinology, Diabetes & Metabolism Physician. 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).
James Speed, M.D. appears in the CMS NPPES registry as an Endocrinology, Diabetes & Metabolism Physician provider holding M.D. credentials at 1800 15TH ST STE 200, Greeley, CO, 80631, with a listed phone of (970) 378-4676. NPI 1811059660 was issued on 12/15/2006.
Medicare Part D records for calendar year 2023 show 1,726 prescription claims written by this provider, covering 355 Medicare beneficiaries and totaling roughly $902K in drug spend, split 45% brand-name and 47% generic by claim count.
Endocrinology, Diabetes & Metabolism Physician is a mid-sized specialty nationwide, with 7,871 enrolled providers across 54 states and an average of 2,639 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 | 1811059660 |
|---|---|
| Specialty | Endocrinology, Diabetes & Metabolism Physician |
| Credentials | M.D. |
| Gender | Male |
| NPI Issued | 12/15/2006 |
Brand vs generic prescribing mix · Above average
James Speed, M.D. - brand share 45.0%
Endocrinology, Diabetes & Metabolism Physician average
45% brand-name claims vs 47% generic, on 1,726 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.
1,726
Total Claims
$902K
Total Drug Cost
355
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 4,118
- Total Day Supply
- 122,668
- Brand vs Generic
- 45% brand / 47% generic
- Brand Drug Cost
- $854K
- Generic Drug Cost
- $23K
Patient Demographics
- Average Patient Age
- 69.0 years
- Avg HCC Risk Score
- 1.66
- Gender Split
- 60% female / 40% male
- Age Distribution
- <65: 77, 65-74: 171, 75-84: 91, 85+: 16
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What James Speed, M.D. prescribes most
Top Medicare Part D drugs by claim count, 2023
- Levothyroxine Sodium
Levothyroxine Sodium
239 claims
- Metformin Hcl 93
Metformin Hcl
93 claims
- Metformin Hcl Er 92
Metformin Hcl Er
92 claims
- Jardiance 56
Jardiance
56 claims
- Atorvastatin Calcium 54
Atorvastatin Calcium
54 claims
- Synthroid 51
Synthroid
51 claims
- Tresiba Flextouch … 50
Tresiba Flextouch U-100
50 claims
- Tresiba Flextouch … 48
Tresiba Flextouch U-200
48 claims
| Drug | Claims |
|---|---|
| Levothyroxine Sodium | 239 |
| Metformin Hcl | 93 |
| Metformin Hcl Er Metformin Hcl | 92 |
| Jardiance Empagliflozin | 56 |
| Atorvastatin Calcium | 54 |
| Synthroid Levothyroxine Sodium | 51 |
| Tresiba Flextouch U-100 Insulin Degludec | 50 |
| Tresiba Flextouch U-200 Insulin Degludec | 48 |
| Novolog Flexpen Insulin Aspart | 46 |
| Ozempic Semaglutide | 45 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
More Endocrinology, Diabetes & Metabolism Physician in CO →
All providers in Colorado →
Compare specialties →
Endocrinology, Diabetes & Metabolism Physician Overview
How James Speed, M.D. fits within the Endocrinology, Diabetes & Metabolism Physician landscape nationally.
7,871
Endocrinology, Diabetes & Metabolism Physician Providers in US
54
States with Endocrinology, Diabetes & Metabolism Physician
2,639
Avg Claims per Provider
James Speed, M.D.'s 1,726 claims are below the specialty average of 2,639.
Nearby Endocrinology, Diabetes & Metabolism Physician Providers in Colorado
Other clinicians with the same primary specialty enrolled in Colorado, drawn from the same CMS NPPES roster as Speed.
Dr. Rebecca Adochio
MD
Edwards, CO
Dr. Robert Alsever
M.D.
Pueblo, CO
Dr. Linda Barbour
MD
Aurora, CO
Dr. Caitlin Bell
MD
Arvada, CO
Dr. Jennifer Bernard
M.D.
Lakewood, CO
Compare Endocrinology, Diabetes & Metabolism 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 Colorado medical board, federal registration is not a license check. Credential verification guide
- Weigh a second option: compare this provider with a nearby Endocrinology, Diabetes & Metabolism 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.
Healthcare Guides
Learn more about finding, verifying, and understanding healthcare providers.
How to Find a Doctor
Step-by-step guide to choosing a provider
Verify Credentials
Check NPI, board certification & license status
Medical Specialties Explained
Who treats what and how specialties differ
Understanding Medicare Claims Data
What prescribing data reveals about a provider
In-Network vs Out-of-Network
How insurance networks affect your costs
Telehealth Guide
Virtual care options and coverage in 2026
Explore Colorado
Frequently Asked Questions
What is James Speed, M.D.'s specialty? ▼
James Speed, M.D. specializes in Endocrinology, Diabetes & Metabolism Physician and practices in Greeley, Colorado. Credentials: M.D..
How much does James Speed, M.D. prescribe under Medicare Part D? ▼
In 2023, James Speed, M.D. wrote 1,726 Medicare Part D claims totaling $902K in drug costs for 355 beneficiaries.
Where is James Speed, M.D. located? ▼
James Speed, M.D. is located at 1800 15TH ST STE 200, Greeley, CO, 80631. Phone: (970) 378-4676.
What is James Speed, M.D.'s NPI number? ▼
James Speed, M.D.'s National Provider Identifier (NPI) is 1811059660, issued on 12/15/2006.
Does James Speed, M.D. prescribe more brand-name or generic drugs? ▼
James Speed, M.D.'s prescribing is 45% brand-name and 47% generic drugs by claim count, with $854K in brand drug costs.
How many Endocrinology, Diabetes & Metabolism Physician providers are there in the US? ▼
There are 7,871 Endocrinology, Diabetes & Metabolism Physician providers across 54 states in the US. The average Endocrinology, Diabetes & Metabolism Physician provider writes 2,639 Medicare Part D claims per year.
What drugs does James Speed, M.D. prescribe most often? ▼
Based on 2023 Medicare Part D data, James Speed, M.D.'s most frequently prescribed drugs include Levothyroxine Sodium, Metformin Hcl, Metformin Hcl Er. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does James Speed, M.D. accept Medicare? ▼
James Speed, M.D. appears in CMS Medicare data with 1,726 Part D claims and 355 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify James Speed, M.D.'s credentials? ▼
James Speed, M.D.'s NPI is 1811059660 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 (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.
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.