NPI registry status
Active
2026 NPPES data Certified Registered Nurse Anesthetist NPI 1558797332 CRNA
Verify on CMS → Alfred Maina, CRNA
Certified Registered Nurse Anesthetist in Craig, 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 62,644 in Certified Registered Nurse Anesthetist, 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 · 145 beneficiaries · Certified Registered Nurse Anesthetist avg: 282
Generic prescribing
81%
generic claims · 19% brand-name · higher generic rates reduce patient out-of-pocket costs
Industry payments
$933.67
6 payments · CMS Open Payments (Sunshine Act)
Source: CMS Medicare Part D Prescriber Public Use File, 2023
What the federal data shows
Alfred Maina, CRNA filed 1,814 Medicare Part D claims in 2023 as a Certified Registered Nurse Anesthetist in Craig, Colorado, prescribing 81% generic.
- 2K
- Part D claims, 2023
- 81%
- generic prescribing
- $933.67
- 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.
Alfred Maina, CRNA's Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
1,814 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
What does the federal data show about Alfred Maina, CRNA?
Quality data not reportedPrimary specialty
Certified Registered Nurse Anesthetist
Medicare Part D claims
1,814 6× vs specialty avg
Specialty distribution in Colorado
How Certified Registered Nurse Anesthetist 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 Certified Registered Nurse Anesthetist. 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).
Alfred Maina, CRNA appears in the CMS NPPES registry as a Certified Registered Nurse Anesthetist provider holding CRNA credentials at 750 HOSPITAL LOOP, Craig, CO, 81625, with a listed phone of (970) 826-2400. NPI 1558797332 was issued on 09/24/2013.
Medicare Part D records for calendar year 2023 show 1,814 prescription claims written by this provider, covering 145 Medicare beneficiaries and totaling roughly $298K in drug spend, split 19% brand-name and 81% generic by claim count, with an opioid prescribing rate of 59.6%.
Certified Registered Nurse Anesthetist is a high-volume specialty nationwide, with 62,644 enrolled providers across 55 states and an average of 282 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 | 1558797332 |
|---|---|
| Specialty | Certified Registered Nurse Anesthetist |
| Credentials | CRNA |
| Gender | Male |
| NPI Issued | 09/24/2013 |
Hospital and facility affiliations
Facilities where Alfred Maina, CRNA 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.
The Memorial Hospital
Craig, CO
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 Alfred Maina, CRNA. Source: openpaymentsdata.cms.gov.
Total received
$934
Largest payer
Pacira Pharmaceuticals Incorporated
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.
Brand vs generic prescribing mix · Typical
Alfred Maina, CRNA - brand share 19.0%
Certified Registered Nurse Anesthetist average
19% brand-name claims vs 81% generic, on 1,814 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.
1,814
Total Claims
$298K
Total Drug Cost
145
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 1,888
- Total Day Supply
- 54,321
- Brand vs Generic
- 19% brand / 81% generic
- Brand Drug Cost
- $233K
- Generic Drug Cost
- $65K
- Opioid Claims
- 1,081 (59.6% rate)
Patient Demographics
- Average Patient Age
- 62.7 years
- Avg HCC Risk Score
- 2.12
- Gender Split
- 68% female / 32% male
- Age Distribution
- <65: 75, 65-74: 50, 75-84: N/A, 85+: N/A
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Alfred Maina, CRNA prescribes most
Top Medicare Part D drugs by claim count, 2023
- Hydrocodone-Acetam…
Hydrocodone-Acetaminophen
200 claims
- Oxycodone-Acetamin…
Oxycodone-Acetaminophen
197 claims
- Oxycodone Hcl
Oxycodone Hcl
121 claims
- Pregabalin
Pregabalin
105 claims
- Belbuca
Belbuca
99 claims
- Morphine Sulfate Er
Morphine Sulfate Er
97 claims
- Gabapentin 71
Gabapentin
71 claims
- Cyclobenzaprine Hcl 66
Cyclobenzaprine Hcl
66 claims
| Drug | Claims |
|---|---|
| Hydrocodone-Acetaminophen Hydrocodone/Acetaminophen | 200 |
| Oxycodone-Acetaminophen Oxycodone Hcl/Acetaminophen | 197 |
| Oxycodone Hcl | 121 |
| Pregabalin | 105 |
| Belbuca Buprenorphine Hcl | 99 |
| Morphine Sulfate Er Morphine Sulfate | 97 |
| Gabapentin | 71 |
| Cyclobenzaprine Hcl | 66 |
| Tramadol Hcl | 60 |
| Morphine Sulfate | 58 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
More Certified Registered Nurse Anesthetist in CO →
All providers in Colorado →
Compare specialties →
Certified Registered Nurse Anesthetist Overview
How Alfred Maina, CRNA fits within the Certified Registered Nurse Anesthetist landscape nationally.
62,644
Certified Registered Nurse Anesthetist Providers in US
55
States with Certified Registered Nurse Anesthetist
282
Avg Claims per Provider
Alfred Maina, CRNA's 1,814 claims are above the specialty average of 282.
Nearby Certified Registered Nurse Anesthetist Providers in Colorado
Other clinicians with the same primary specialty enrolled in Colorado, drawn from the same CMS NPPES roster as Maina.
Jacob Abel
Greenwood Village, CO
Dr. Toni Abraham
CRNA
Aurora, CO
Dr. Thomas Achter
CRNA
Colorado Springs, CO
Dr. Serena Ackerman
CRNA
Pueblo, CO
Dr. Heather Adams
CRNA
Denver, CO
Compare Certified Registered Nurse Anesthetist 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 Certified Registered Nurse Anesthetist 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 Alfred Maina, CRNA's specialty? ▼
Alfred Maina, CRNA specializes in Certified Registered Nurse Anesthetist and practices in Craig, Colorado. Credentials: CRNA.
How much does Alfred Maina, CRNA prescribe under Medicare Part D? ▼
In 2023, Alfred Maina, CRNA wrote 1,814 Medicare Part D claims totaling $298K in drug costs for 145 beneficiaries.
Where is Alfred Maina, CRNA located? ▼
Alfred Maina, CRNA is located at 750 HOSPITAL LOOP, Craig, CO, 81625. Phone: (970) 826-2400.
What is Alfred Maina, CRNA's NPI number? ▼
Alfred Maina, CRNA's National Provider Identifier (NPI) is 1558797332, issued on 09/24/2013.
Does Alfred Maina, CRNA prescribe more brand-name or generic drugs? ▼
Alfred Maina, CRNA's prescribing is 19% brand-name and 81% generic drugs by claim count, with $233K in brand drug costs.
Does Alfred Maina, CRNA prescribe opioids? ▼
Yes, Alfred Maina, CRNA had 1,081 opioid claims in 2023 with an opioid prescribing rate of 59.6%.
How many Certified Registered Nurse Anesthetist providers are there in the US? ▼
There are 62,644 Certified Registered Nurse Anesthetist providers across 55 states in the US. The average Certified Registered Nurse Anesthetist provider writes 282 Medicare Part D claims per year.
What drugs does Alfred Maina, CRNA prescribe most often? ▼
Based on 2023 Medicare Part D data, Alfred Maina, CRNA's most frequently prescribed drugs include Hydrocodone-Acetaminophen, Oxycodone-Acetaminophen, Oxycodone Hcl. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Alfred Maina, CRNA accept Medicare? ▼
Alfred Maina, CRNA appears in CMS Medicare data with 1,814 Part D claims and 145 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Alfred Maina, CRNA's credentials? ▼
Alfred Maina, CRNA's NPI is 1558797332 with credentials CRNA. 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
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.