NPI registry status
Active
2026 NPPES data Addiction Psychiatry Physician NPI 1790950772 DO
Verify on CMS → Michael Shairs, DO
Addiction Psychiatry Physician in Keene, New Hampshire.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 683 in Addiction Psychiatry 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
965
Medicare Part D claims · 143 beneficiaries · Addiction Psychiatry Physician avg: 789
What the federal data shows
Michael Shairs, DO filed 965 Medicare Part D claims in 2024 as an Addiction Psychiatry Physician in Keene, New Hampshire.
- 965
- Part D claims, 2024
- Likely
- board-certified (heuristic)
- ≥74th
- 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 Michael Shairs, DO
Federal records show an active NPI with Medicare Part D prescribing activity — verifiable registry data, not a proprietary rating.
- Verified
NPI registry status
Active listing in the CMS National Provider Identifier Registry (NPI 1790950772), first enumerated 04/29/2008.
Source: CMS NPPES
- Reported
Medicare Part D participation
Filed 965 Medicare Part D prescription claims in the 2023 CMS public use file — indicates active Medicare prescribing participation.
Source: CMS Part D Prescriber PUF
- Reported
Board certification signal
Heuristic suggests board-certified status based on ABMS-eligible specialty taxonomy plus active CMS participation signals — not a direct ABMS verification.
- Reported
Hospital affiliations
1 CMS Care Compare hospital affiliation on record — practice footprint from the Doctors and Clinicians file.
Source: CMS Care Compare
- 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 1790950772 · Addiction Psychiatry Physician
NPI-10 · ENUM-MID · TAX-NARROW · RX-LIGHT · BOOK-THIN · PHOTO-ENUM
- NPI-10 1790950772
- ENUM-MID 2008
- TAX-NARROW 683
- RX-LIGHT 965
- BOOK-THIN 4 in New Hampshire
- PHOTO-ENUM Sarz Maxwell, M.D. · 2008
Michael Shairs, DO's Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2024, across all CMS prescribers nationally
965 ≥ 74th percentile 74% 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
✓
Board certification likely (heuristic, not verified)
Michael Shairs, DO practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + 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 Michael Shairs, DO?
Quality data not reportedPrimary specialty
Addiction Psychiatry Physician
Medicare Part D claims
965 22% vs specialty avg
Specialty distribution in New Hampshire
How Addiction Psychiatry Physician compares to other specialties among New Hampshire 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 Addiction Psychiatry 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).
Practice Address
Provider Details
| NPI | 1790950772 |
|---|---|
| Specialty | Addiction Psychiatry Physician |
| Credentials | DO |
| Gender | Male |
| NPI Issued | 04/29/2008 |
Hospital and facility affiliations
Facilities where Michael Shairs, DO 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.
Atrius Health Inc
Chelmsford, MA
Affiliations sourced from CMS Doctors and Clinicians National Downloadable File; hospital ratings from CMS Hospital General Information dataset (cross-referenced by facility name + state).
Medicare Part D Prescribing Data
CMS Medicare Part D prescriber-level data for calendar year 2024.
965
Total Claims
$38K
Total Drug Cost
143
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 1,403.433
- Total Day Supply
- 40,795
- Generic Drug Cost
- $19K
Patient Demographics
- Average Patient Age
- 66.0 years
- Avg HCC Risk Score
- 1.10
- Gender Split
- 63% female / 37% male
- Age Distribution
- <65: 44, 65-74: 61, 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 Michael Shairs, DO prescribes most
Top Medicare Part D drugs by claim count, 2024
- Clonazepam
Clonazepam
95 claims
- Fluoxetine Hcl
Fluoxetine Hcl
73 claims
- Trazodone Hcl
Trazodone Hcl
64 claims
- Sertraline Hcl
Sertraline Hcl
62 claims
- Mirtazapine
Mirtazapine
47 claims
- Aripiprazole
Aripiprazole
43 claims
- Lorazepam
Lorazepam
43 claims
- Quetiapine Fumarate
Quetiapine Fumarate
43 claims
| Drug | Claims |
|---|---|
| Clonazepam | 95 |
| Fluoxetine Hcl | 73 |
| Trazodone Hcl | 64 |
| Sertraline Hcl | 62 |
| Mirtazapine | 47 |
| Aripiprazole | 43 |
| Lorazepam | 43 |
| Quetiapine Fumarate | 43 |
| Bupropion Xl Bupropion Hcl | 39 |
| Bupropion Hcl Sr Bupropion Hcl | 30 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Addiction Psychiatry Physician Overview
How Michael Shairs, DO fits within the Addiction Psychiatry Physician landscape nationally.
683
Addiction Psychiatry Physician Providers in US
49
States with Addiction Psychiatry Physician
789
Avg Claims per Provider
Michael Shairs, DO's 965 claims are above the specialty average of 789.
Nationwide Addiction Psychiatry Physician peers with similar MIPS or enrollment year
Two federal-record peer sets for Shairs, both outside New Hampshire so the neighborhoods are not geographic containment.
Same NPPES enumeration year (2008)
Same-specialty clinicians who entered the NPI registry in the same calendar year, outside this state.
Nearby Addiction Psychiatry Physician Providers in New Hampshire
Other clinicians with the same primary specialty enrolled in New Hampshire, drawn from the same CMS NPPES roster as Shairs.
One of 4 Addiction Psychiatry Physician providers enrolled in New Hampshire, 3 are shown here.
Dr. Luke Archibald
M.D.
Lebanon, NH
Dr. Bryan Hybki
MD
Lebanon, NH
Dr. William Levitt
M.D.
Manchester, NH
Compare Addiction Psychiatry Physician nationally: see state-by-state distribution →
Frequently Asked Questions
What is Michael Shairs, DO's specialty? ▼
Michael Shairs, DO specializes in Addiction Psychiatry Physician and practices in Keene, New Hampshire. Credentials: DO.
How much does Michael Shairs, DO prescribe under Medicare Part D? ▼
In 2024, Michael Shairs, DO wrote 965 Medicare Part D claims totaling $38K in drug costs for 143 beneficiaries.
Where is Michael Shairs, DO located? ▼
Michael Shairs, DO is located at 17 93RD ST, Keene, NH, 03431. Phone: (603) 357-4400.
What is Michael Shairs, DO's NPI number? ▼
Michael Shairs, DO's National Provider Identifier (NPI) is 1790950772, issued on 04/29/2008.
How many Addiction Psychiatry Physician providers are there in the US? ▼
There are 683 Addiction Psychiatry Physician providers across 49 states in the US. The average Addiction Psychiatry Physician provider writes 789 Medicare Part D claims per year.
What drugs does Michael Shairs, DO prescribe most often? ▼
Based on 2024 Medicare Part D data, Michael Shairs, DO's most frequently prescribed drugs include Clonazepam, Fluoxetine Hcl, Trazodone Hcl. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Michael Shairs, DO accept Medicare? ▼
Michael Shairs, DO appears in CMS Medicare data with 965 Part D claims and 143 Medicare beneficiaries in 2024. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Michael Shairs, DO's credentials? ▼
Michael Shairs, DO's NPI is 1790950772 with credentials DO. 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.