STEVEN ZEILER, MD
Single Specialty Group in WHEAT RIDGE, Colorado. CMS National Plan and Provider Enumeration System profile including specialty classification, practice address, and Medicare prescribing data when reported.
What the federal data shows
STEVEN ZEILER, MD filed 3,018 Medicare Part D claims in 2023 as a Single Specialty Group in WHEAT RIDGE, Colorado, prescribing 85% generic.
- 3K
- Part D claims, 2023
- 85%
- 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.
STEVEN ZEILER, MD's Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023 — across all CMS prescribers nationally
3,018 Top 11% higher than 89% 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 STEVEN ZEILER, MD?
Quality data not reportedPrimary specialty
Medicare Part D claims
Specialty distribution in Colorado
How Single Specialty Group compares to other specialties among Colorado providers
Single Specialty Group share within Colorado
Single Specialty Group is one of the more visible NUCC categories in Colorado
Each bar reflects the share of in-state providers whose primary NUCC taxonomy matches the specialty. Long tail of ~690 NUCC codes folded into "Other" to keep the comparison legible.
Specialty board-certification context
Estimated specialty board-certified rate — Single Specialty Group (ABMS / AOA reference)
- Est. board-certified rate
- 78%
- Single Specialty Group ABMS/AOA estimate
Est. board-certified rate (Single Specialty Group) — ABMS / AOA estimate
Verify credentials
- Verify via ABMS free public lookup
- Verify via AOA osteopathic boards
- Specialty volume Single Specialty Group US NPIs
Specialty board-certified rate — Single Specialty Group estimate
Board certification through an ABMS or AOA member board signals voluntary post-licensure examination plus Maintenance of Certification cycles. CMS does not publish a per-provider board-certification field; the figure shown is the specialty-level estimated rate from ABMS / AOA reference data.
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).
STEVEN ZEILER, MD appears in the CMS NPPES registry as a Single Specialty Group provider holding MD credentials at 3885 UPHAM ST, WHEAT RIDGE, CO, 80033, with a listed phone of (720) 838-7335. NPI 1003850066 was issued on 06/16/2006. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what ZEILER most recently submitted to CMS rather than a vetted directory listing, which is why patients should always confirm the practice is still at this location before scheduling.
Medicare Part D records for calendar year 2023 show 3,018 prescription claims written by this provider, covering 216 Medicare beneficiaries and totaling roughly $467K in drug spend, split 15% brand-name and 85% generic by claim count, with an opioid prescribing rate of 1.6%. These figures capture only Medicare Part D — commercial insurance, Medicaid, and cash-pay prescriptions are not included, and any drug-beneficiary cell under 11 is suppressed by CMS for patient privacy.
Single Specialty Group is a narrow specialty nationwide, with 24 enrolled providers across 16 states and an average of 7,180 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 | 1003850066 |
|---|---|
| Specialty | Single Specialty Group |
| Credentials | MD |
| Gender | Male |
| NPI Issued | 06/16/2006 |
Verify this provider's license
PlainDoctor pulls this profile from the CMS NPPES public registry. Confirm STEVEN ZEILER, MD's current license status, disciplinary history, and board certifications with the Colorado Medical Board in Colorado before relying on this page for a clinical or care decision.
How we sourced this profile
Brand vs generic prescribing mix · Typical
15% brand-name claims vs 85% generic, on 3,018 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.
Prescribing Breakdown
- 30-Day Fills
- 3,063
- Total Day Supply
- 82,208
- Brand vs Generic
- 15% brand / 85% generic
- Brand Drug Cost
- $310K
- Generic Drug Cost
- $156K
- Opioid Claims
- 47 (1.6% rate)
- Antibiotic Claims
- 40
Patient Demographics
- Average Patient Age
- 75.0 years
- Avg HCC Risk Score
- 2.56
- Gender Split
- 73% female / 27% male
- Age Distribution
- <65: 20, 65-74: 86, 75-84: 80, 85+: 30
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What STEVEN ZEILER, MD prescribes most
Top Medicare Part D drugs by claim count, 2023
- Atorvastatin Calcium
Atorvastatin Calcium
207 claims
- Amlodipine Besylate
Amlodipine Besylate
132 claims
- Lisinopril
Lisinopril
89 claims
- Levothyroxine Sodium
Levothyroxine Sodium
88 claims
- Gabapentin
Gabapentin
85 claims
- Famotidine 81
Famotidine
81 claims
- Losartan Potassium 71
Losartan Potassium
71 claims
- Omeprazole 71
Omeprazole
71 claims
| Drug | Claims |
|---|---|
| Atorvastatin Calcium | 207 |
| Amlodipine Besylate | 132 |
| Lisinopril | 89 |
| Levothyroxine Sodium | 88 |
| Gabapentin | 85 |
| Famotidine | 81 |
| Losartan Potassium | 71 |
| Omeprazole | 71 |
| Trazodone Hcl | 63 |
| Duloxetine Hcl | 56 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Single Specialty Group Overview
How STEVEN ZEILER, MD fits within the Single Specialty Group landscape nationally.
STEVEN ZEILER, MD's 3,018 claims are below the specialty average of 7,180.
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Frequently Asked Questions
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Data Sources
- 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