NPI registry status
Active
2026 NPPES data Surgery Physician NPI 1649241365 MD
Verify on CMS → Barry Hammaker, MD
Surgery Physician in Vail, 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 36,191 in Surgery 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
93
Medicare Part D claims · 62 beneficiaries · Surgery Physician avg: 169
Generic prescribing
75%
generic claims · 25% brand-name · higher generic rates reduce patient out-of-pocket costs
MIPS score
79.3/100
▼ 4 pts below national avg 83.1 · Above neutral
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
Barry Hammaker, MD reported a CMS MIPS final score of 79.3/100 - below the 83.1 national average - and filed 93 Medicare Part D claims in 2023.
- 79.3/100
- MIPS score · -4 vs avg
- 93
- Part D claims, 2023
- 75%
- generic prescribing
- Likely
- board-certified (heuristic)
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.
Barry Hammaker, MD's MIPS score vs every scored U.S. clinician
CMS Merit-based Incentive Payment System (MIPS) final score, 2023, the federal quality measure
79 30th percentile higher than 30% of 477,587 scored providers
Each bar is a band; taller bars hold more scored providers. 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 Merit-based Incentive Payment System (MIPS) · 2023
Where Barry Hammaker, MD sits
This provider among surgery physician peers
Across the 7,525 surgery physician providers who report both Medicare Part D prescribing and a MIPS quality score, Barry Hammaker, MD writes more Part D claims than 50% of them and scores higher on MIPS quality than 28% - placing this provider in the high-volume, lower-quality quadrant. Volume reflects patient-panel size and specialty, not quality; the two axes are independent.
Part D claim volume vs MIPS quality, by specialty percentile
Each dot is one surgery physician peer from a representative sample of 60; the gold marker is Barry Hammaker, MD. Source: CMS Medicare Part D Prescriber data and the CMS Merit-based Incentive Payment System, 2023.
✓
Board certification likely (heuristic, not verified)
Barry Hammaker, MD practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + MIPS quality reporting + 1 hospital affiliation - signals consistent with board-certified status. For verified board certification, see CertificationMatters.org (the official ABMS public lookup).
What does the federal data show about Barry Hammaker, MD?
Near national averagePrimary specialty
Surgery Physician
Medicare Part D claims
93 45% vs specialty avg
MIPS final score
79.3/100 3.8 pts vs avg
Specialty distribution in Colorado
How Surgery Physician compares to other specialties among Colorado providers
Medicare quality performance, MIPS
Barry Hammaker, MD's 2023 MIPS final score plotted against the Surgery Physician national average
- MIPS Final Score
- 79.3/100
- vs 83.1 national avg · 2023 performance year
MIPS final score (Surgery Physician) - 79.3/100 vs national avg 83.1
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).
Barry Hammaker, MD appears in the CMS NPPES registry as a Surgery Physician provider holding MD credentials at 181 W MEADOW DR, Vail, CO, 81657, with a listed phone of (970) 476-5036. NPI 1649241365 was issued on 01/30/2006.
Medicare Part D records for calendar year 2023 show 93 prescription claims written by this provider, covering 62 Medicare beneficiaries and totaling roughly $4K in drug spend, split 25% brand-name and 75% generic by claim count, with an opioid prescribing rate of 20.4%. On the CMS Merit-based Incentive Payment System, this provider earned a Final Score of 79.3/100 for the 2023 performance year (Quality 67.4, Cost 65.2), compared with the national average of 83.1.
Surgery Physician is a mid-sized specialty nationwide, with 36,191 enrolled providers across 56 states and an average of 169 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 | 1649241365 |
|---|---|
| Specialty | Surgery Physician |
| Credentials | MD |
| Gender | Male |
| NPI Issued | 01/30/2006 |
CMS Quality Score (MIPS)
Merit-based Incentive Payment System (MIPS) scores from CMS, 2023 performance year.
79.2808
Final Score
Avg: 83.1
67.3923
Quality
65.2104
Cost
98
Promoting Interoperability
Reporting: Group practice
Hospital and facility affiliations
Facilities where Barry Hammaker, MD 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.
Vvmc Diversified Services
Vail, 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).
Brand vs generic prescribing mix · Above average
Barry Hammaker, MD - brand share 25.0%
Surgery Physician average
25% brand-name claims vs 75% generic, on 93 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.
93
Total Claims
$4K
Total Drug Cost
62
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 110
- Total Day Supply
- 1,153
- Brand vs Generic
- 25% brand / 75% generic
- Brand Drug Cost
- $2K
- Generic Drug Cost
- $2K
- Opioid Claims
- 19 (20.4% rate)
Patient Demographics
- Average Patient Age
- 70.4 years
- Avg HCC Risk Score
- 0.92
- Gender Split
- 50% female / 50% male
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
| Drug | Claims |
|---|---|
| Oxycodone Hcl | 15 |
| Sod Sulf-Potass Sulf-Mag Sulf "Sodium | N/A |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Surgery Physician Overview
How Barry Hammaker, MD fits within the Surgery Physician landscape nationally.
36,191
Surgery Physician Providers in US
56
States with Surgery Physician
169
Avg Claims per Provider
Barry Hammaker, MD's 93 claims are below the specialty average of 169.
Nearby Surgery Physician Providers in Colorado
Other clinicians with the same primary specialty enrolled in Colorado, drawn from the same CMS NPPES roster as Hammaker.
Dr. David Abts
M.D.
Aurora, CO
Dr. Stuart Ackley
MD
Grand Junction, CO
Dr. Muhammad Aftab
M.B.,B,S, MD
Aurora, CO
Dr. Rizwan Ahmed
M.D.
Durango, CO
Dr. Eric Ahnfeldt
D.O.
Fort Carson, CO
Compare Surgery 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 Surgery 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
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Medical Specialties Explained
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Understanding Medicare Claims Data
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How insurance networks affect your costs
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Frequently Asked Questions
What is Barry Hammaker, MD's specialty? ▼
Barry Hammaker, MD specializes in Surgery Physician and practices in Vail, Colorado. Credentials: MD.
How much does Barry Hammaker, MD prescribe under Medicare Part D? ▼
In 2023, Barry Hammaker, MD wrote 93 Medicare Part D claims totaling $4K in drug costs for 62 beneficiaries.
What is Barry Hammaker, MD's Medicare quality score? ▼
Barry Hammaker, MD has a CMS MIPS Final Score of 79.3/100 (Quality: 67.4, Cost: 65.2). The national average MIPS Final Score is 83.1. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is Barry Hammaker, MD located? ▼
Barry Hammaker, MD is located at 181 W MEADOW DR, Vail, CO, 81657. Phone: (970) 476-5036.
What is Barry Hammaker, MD's NPI number? ▼
Barry Hammaker, MD's National Provider Identifier (NPI) is 1649241365, issued on 01/30/2006.
Does Barry Hammaker, MD prescribe more brand-name or generic drugs? ▼
Barry Hammaker, MD's prescribing is 25% brand-name and 75% generic drugs by claim count, with $2K in brand drug costs.
Does Barry Hammaker, MD prescribe opioids? ▼
Yes, Barry Hammaker, MD had 19 opioid claims in 2023 with an opioid prescribing rate of 20.4%.
How many Surgery Physician providers are there in the US? ▼
There are 36,191 Surgery Physician providers across 56 states in the US. The average Surgery Physician provider writes 169 Medicare Part D claims per year.
What drugs does Barry Hammaker, MD prescribe most often? ▼
Based on 2023 Medicare Part D data, Barry Hammaker, MD's most frequently prescribed drugs include Oxycodone Hcl, Sod Sulf-Potass Sulf-Mag Sulf. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Barry Hammaker, MD accept Medicare? ▼
Barry Hammaker, MD appears in CMS Medicare data with 93 Part D claims and 62 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Barry Hammaker, MD's credentials? ▼
Barry Hammaker, MD's NPI is 1649241365 with credentials MD. 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.
- Quality Performance
- CMS Merit-based Incentive Payment System (MIPS) - 2023 performance year.
- 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.