NPI registry status
Active
2026 NPPES data Hospitalist Physician NPI 1205881042 M.D.
Verify on CMS → Christopher Maiona, M.D.
Hospitalist Physician in Augusta, Maine.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 16,825 in Hospitalist 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
3K
Medicare Part D claims · 217 beneficiaries · Hospitalist Physician avg: 888
Generic prescribing
82%
generic claims · 17% brand-name · higher generic rates reduce patient out-of-pocket costs
Industry payments
$1.7K
82 payments · CMS Open Payments (Sunshine Act)
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
Christopher Maiona, M.D. filed 2,601 Medicare Part D claims in 2023 as a Hospitalist Physician in Augusta, Maine, prescribing 82% generic.
- 3K
- Part D claims, 2023
- 82%
- 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.
Christopher Maiona, M.D.'s Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
2,601 Top 13% higher than 87% 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 certification likely (heuristic, not verified)
Christopher Maiona, M.D. 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 Christopher Maiona, M.D.?
Quality data not reportedPrimary specialty
Hospitalist Physician
Medicare Part D claims
2,601 193% vs specialty avg
Specialty distribution in Maine
How Hospitalist Physician compares to other specialties among Maine 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 Hospitalist 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).
Christopher Maiona, M.D. appears in the CMS NPPES registry as a Hospitalist Physician provider holding M.D. credentials at 6 E CHESTNUT ST, Augusta, ME, 04330, with a listed phone of (207) 626-1000. NPI 1205881042 was issued on 05/23/2006.
Medicare Part D records for calendar year 2023 show 2,601 prescription claims written by this provider, covering 217 Medicare beneficiaries and totaling roughly $198K in drug spend, split 17% brand-name and 82% generic by claim count, with an opioid prescribing rate of 0.6%.
Hospitalist Physician is a mid-sized specialty nationwide, with 16,825 enrolled providers across 54 states and an average of 888 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 | 1205881042 |
|---|---|
| Specialty | Hospitalist Physician |
| Credentials | M.D. |
| Gender | Male |
| NPI Issued | 05/23/2006 |
Hospital and facility affiliations
Facilities where Christopher Maiona, M.D. 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.
Circle Medical Team LLC
Norwood, 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).
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 Christopher Maiona, M.D.. Source: openpaymentsdata.cms.gov.
Total received
$1.7K
Largest payer
ABBVIE INC.
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
Christopher Maiona, M.D. - brand share 17.0%
Hospitalist Physician average
17% brand-name claims vs 82% generic, on 2,601 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.
2,601
Total Claims
$198K
Total Drug Cost
217
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 3,338
- Total Day Supply
- 86,029
- Brand vs Generic
- 17% brand / 82% generic
- Brand Drug Cost
- $145K
- Generic Drug Cost
- $52K
- Opioid Claims
- 15 (0.6% rate)
- Antibiotic Claims
- 51
Patient Demographics
- Average Patient Age
- 78.3 years
- Avg HCC Risk Score
- 2.02
- Gender Split
- 53% female / 47% male
- Age Distribution
- <65: 17, 65-74: 55, 75-84: 87, 85+: 58
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Christopher Maiona, M.D. prescribes most
Top Medicare Part D drugs by claim count, 2023
- Amlodipine Besylate
Amlodipine Besylate
147 claims
- Atorvastatin Calcium
Atorvastatin Calcium
144 claims
- Furosemide
Furosemide
143 claims
- Metoprolol Succinate
Metoprolol Succinate
102 claims
- Eliquis
Eliquis
95 claims
- Levothyroxine Sodium
Levothyroxine Sodium
90 claims
- Lisinopril
Lisinopril
90 claims
- Metformin Hcl
Metformin Hcl
65 claims
| Drug | Claims |
|---|---|
| Amlodipine Besylate | 147 |
| Atorvastatin Calcium | 144 |
| Furosemide | 143 |
| Metoprolol Succinate | 102 |
| Eliquis Apixaban | 95 |
| Levothyroxine Sodium | 90 |
| Lisinopril | 90 |
| Metformin Hcl | 65 |
| Losartan Potassium | 64 |
| Gabapentin | 50 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Hospitalist Physician Overview
How Christopher Maiona, M.D. fits within the Hospitalist Physician landscape nationally.
16,825
Hospitalist Physician Providers in US
54
States with Hospitalist Physician
888
Avg Claims per Provider
Christopher Maiona, M.D.'s 2,601 claims are above the specialty average of 888.
Nearby Hospitalist Physician Providers in Maine
Other clinicians with the same primary specialty enrolled in Maine, drawn from the same CMS NPPES roster as Maiona.
Dr. Moataz Mohamed Nazmy Abdelnaby
MD
Bangor, ME
Dr. Kelly Aguilar
M.D.
Bangor, ME
Dr. Mohanad Ahmed
MD
Bangor, ME
Dr. Mohammed Al-Nufal
MD
Augusta, ME
Dr. Ahmed Aldilaimi
MD
Waterville, ME
Compare Hospitalist 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 Maine medical board, federal registration is not a license check. Credential verification guide
- Weigh a second option: compare this provider with a nearby Hospitalist 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.
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Frequently Asked Questions
What is Christopher Maiona, M.D.'s specialty? ▼
Christopher Maiona, M.D. specializes in Hospitalist Physician and practices in Augusta, Maine. Credentials: M.D..
How much does Christopher Maiona, M.D. prescribe under Medicare Part D? ▼
In 2023, Christopher Maiona, M.D. wrote 2,601 Medicare Part D claims totaling $198K in drug costs for 217 beneficiaries.
Where is Christopher Maiona, M.D. located? ▼
Christopher Maiona, M.D. is located at 6 E CHESTNUT ST, Augusta, ME, 04330. Phone: (207) 626-1000.
What is Christopher Maiona, M.D.'s NPI number? ▼
Christopher Maiona, M.D.'s National Provider Identifier (NPI) is 1205881042, issued on 05/23/2006.
Does Christopher Maiona, M.D. prescribe more brand-name or generic drugs? ▼
Christopher Maiona, M.D.'s prescribing is 17% brand-name and 82% generic drugs by claim count, with $145K in brand drug costs.
Does Christopher Maiona, M.D. prescribe opioids? ▼
Yes, Christopher Maiona, M.D. had 15 opioid claims in 2023 with an opioid prescribing rate of 0.6%.
How many Hospitalist Physician providers are there in the US? ▼
There are 16,825 Hospitalist Physician providers across 54 states in the US. The average Hospitalist Physician provider writes 888 Medicare Part D claims per year.
What drugs does Christopher Maiona, M.D. prescribe most often? ▼
Based on 2023 Medicare Part D data, Christopher Maiona, M.D.'s most frequently prescribed drugs include Amlodipine Besylate, Atorvastatin Calcium, Furosemide. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Christopher Maiona, M.D. accept Medicare? ▼
Christopher Maiona, M.D. appears in CMS Medicare data with 2,601 Part D claims and 217 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Christopher Maiona, M.D.'s credentials? ▼
Christopher Maiona, M.D.'s NPI is 1205881042 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.