NPI registry status
Active
2026 NPPES data Student in an Organized Health Care Education/Training Program NPI 1891159596 D.O.
Verify on CMS → Andrea Gillis, D.O.
Student in an Organized Health Care Education/Training Program in Hartford, Connecticut.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 351,014 in Student in an Organized Health Care Education/Training Program, 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
898
Medicare Part D claims · 225 beneficiaries · Student in an Organized Health Care Education/Training Program avg: 488
Industry payments
$182.94
8 payments · CMS Open Payments (Sunshine Act)
What the federal data shows
Andrea Gillis, D.O. filed 898 Medicare Part D claims in 2024 as a Student in an Organized Health Care Education/Training Program in Hartford, Connecticut.
- 898
- Part D claims, 2024
- $182.94
- industry payments (Sunshine Act)
- ≥72nd
- 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 Andrea Gillis, D.O.
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 1891159596), first enumerated 04/08/2016.
Source: CMS NPPES
- Reported
Medicare Part D participation
Filed 898 Medicare Part D prescription claims in the 2023 CMS public use file — indicates active Medicare prescribing participation.
Source: CMS Part D Prescriber PUF
- Reported
Industry payment transparency
$182.94 in reported industry payments (8 transfers) in 2024 under the federal Sunshine Act — disclosed transfers of value, not a quality rating.
Source: CMS Open Payments
- 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 1891159596 · Student in an Organized Health Care Education/Training Program
NPI-10 · ENUM-MID · TAX-MEGA · RX-LIGHT · BOOK-MID · PHOTO-ENUM
- NPI-10 1891159596
- ENUM-MID 2016
- TAX-MEGA 351K Student in
- RX-LIGHT 898
- BOOK-MID 6,669 in Connecticut
- PHOTO-ENUM Christopher Tucker · 2016
Andrea Gillis, D.O.'s Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2024, across all CMS prescribers nationally
898 ≥ 72nd percentile 72% 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
What does the federal data show about Andrea Gillis, D.O.?
Quality data not reportedPrimary specialty
Student in an Organized Health Care Education/Training Program
Medicare Part D claims
898 84% vs specialty avg
Specialty distribution in Connecticut
How Student in an Organized Health Care Education/Training Program compares to other specialties among Connecticut 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 Student in an Organized Health Care Education/Training Program. 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 | 1891159596 |
|---|---|
| Specialty | Student in an Organized Health Care Education/Training Program |
| Credentials | D.O. |
| Gender | Female |
| NPI Issued | 04/08/2016 |
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 Andrea Gillis, D.O.. Source: openpaymentsdata.cms.gov.
Total received
$183
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.
Medicare Part D Prescribing Data
CMS Medicare Part D prescriber-level data for calendar year 2024.
898
Total Claims
$80K
Total Drug Cost
225
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 2,170.867
- Total Day Supply
- 62,278
- Generic Drug Cost
- $14K
- Antibiotic Claims
- 70
Patient Demographics
- Average Patient Age
- 74.7 years
- Avg HCC Risk Score
- 0.81
- Gender Split
- 69% female / 31% male
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2024. Based on Medicare Part D data only.
What Andrea Gillis, D.O. prescribes most
Top Medicare Part D drugs by claim count, 2024
- Levothyroxine Sodium
Levothyroxine Sodium
61 claims
- Atorvastatin Calcium
Atorvastatin Calcium
56 claims
- Losartan Potassium
Losartan Potassium
52 claims
- Rosuvastatin Calcium
Rosuvastatin Calcium
47 claims
- Amlodipine Besylate
Amlodipine Besylate
37 claims
- Ozempic
Ozempic
36 claims
- Escitalopram Oxalate
Escitalopram Oxalate
34 claims
- Hydrochlorothiazide
Hydrochlorothiazide
32 claims
| Drug | Claims |
|---|---|
| Levothyroxine Sodium | 61 |
| Atorvastatin Calcium | 56 |
| Losartan Potassium | 52 |
| Rosuvastatin Calcium | 47 |
| Amlodipine Besylate | 37 |
| Ozempic Semaglutide | 36 |
| Escitalopram Oxalate | 34 |
| Hydrochlorothiazide | 32 |
| Lisinopril | 26 |
| Sertraline Hcl | 22 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
More Student in an Organized Health Care Education/Training Program in CT →
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Student in an Organized Health Care Education/Training Program Overview
How Andrea Gillis, D.O. fits within the Student in an Organized Health Care Education/Training Program landscape nationally.
351,014
Student in an Organized Health Care Education/Training Program Providers in US
55
States with Student in an Organized Health Care Education/Training Program
488
Avg Claims per Provider
Andrea Gillis, D.O.'s 898 claims are above the specialty average of 488.
Nationwide Student in an Organized Health Care Education/Training Program peers with similar MIPS or enrollment year
Two federal-record peer sets for Gillis, both outside Connecticut so the neighborhoods are not geographic containment.
Same NPPES enumeration year (2016)
Same-specialty clinicians who entered the NPI registry in the same calendar year, outside this state.
Nearby Student in an Organized Health Care Education/Training Program Providers in Connecticut
Other clinicians with the same primary specialty enrolled in Connecticut, drawn from the same CMS NPPES roster as Gillis.
One of 6,669 Student in an Organized Health Care Education/Training Program providers enrolled in Connecticut, 5 are shown here.
Frequently Asked Questions
What is Andrea Gillis, D.O.'s specialty? ▼
Andrea Gillis, D.O. specializes in Student in an Organized Health Care Education/Training Program and practices in Hartford, Connecticut. Credentials: D.O..
How much does Andrea Gillis, D.O. prescribe under Medicare Part D? ▼
In 2024, Andrea Gillis, D.O. wrote 898 Medicare Part D claims totaling $80K in drug costs for 225 beneficiaries.
Where is Andrea Gillis, D.O. located? ▼
Andrea Gillis, D.O. is located at 99 WOODLAND ST, Hartford, CT, 06105. Phone: (860) 714-4212.
What is Andrea Gillis, D.O.'s NPI number? ▼
Andrea Gillis, D.O.'s National Provider Identifier (NPI) is 1891159596, issued on 04/08/2016.
How many Student in an Organized Health Care Education/Training Program providers are there in the US? ▼
There are 351,014 Student in an Organized Health Care Education/Training Program providers across 55 states in the US. The average Student in an Organized Health Care Education/Training Program provider writes 488 Medicare Part D claims per year.
What drugs does Andrea Gillis, D.O. prescribe most often? ▼
Based on 2024 Medicare Part D data, Andrea Gillis, D.O.'s most frequently prescribed drugs include Levothyroxine Sodium, Atorvastatin Calcium, Losartan Potassium. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Andrea Gillis, D.O. accept Medicare? ▼
Andrea Gillis, D.O. appears in CMS Medicare data with 898 Part D claims and 225 Medicare beneficiaries in 2024. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Andrea Gillis, D.O.'s credentials? ▼
Andrea Gillis, D.O.'s NPI is 1891159596 with credentials D.O.. 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.