NPI registry status
Active
2026 NPPES data Critical Care Medicine (Internal Medicine) Physician NPI 1659363885 MD
Verify on CMS → Fiona Meller Azrieli, MD
Critical Care Medicine (Internal Medicine) Physician in Halethorpe, Maryland.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 6,916 in Critical Care Medicine (Internal Medicine) 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 · 561 beneficiaries · Critical Care Medicine (Internal Medicine) Physician avg: 1K
Generic prescribing
52%
generic claims · 48% brand-name · higher generic rates reduce patient out-of-pocket costs
Source: CMS Medicare Part D Prescriber Public Use File, 2024
What the federal data shows
Fiona Meller Azrieli, MD filed 2,664 Medicare Part D claims in 2024 as a Critical Care Medicine (Internal Medicine) Physician in Halethorpe, Maryland, prescribing 52% generic.
- 3K
- Part D claims, 2024
- 52%
- generic prescribing
- Likely
- board-certified (heuristic)
- ≥87th
- 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 Fiona Meller Azrieli, MD
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 1659363885), first enumerated 08/15/2005.
Source: CMS NPPES
- Reported
Medicare Part D participation
Filed 2,664 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 1659363885 · Critical Care Medicine (Internal Medicine) Physician
NPI-10 · ENUM-LEGACY · TAX-MID · RX-MID · BOOK-THIN · PHOTO-ENUM
- NPI-10 1659363885
- ENUM-LEGACY 2005
- TAX-MID 7K Critical Care
- RX-MID 2,664
- BOOK-THIN 217 in Maryland
- PHOTO-ENUM Branko Kesler · 2005
Fiona Meller Azrieli, MD's Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2024, across all CMS prescribers nationally
2,664 ≥ 87th percentile 87% 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)
Fiona Meller Azrieli, MD 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 Fiona Meller Azrieli, MD?
Quality data not reportedPrimary specialty
Critical Care Medicine (Internal Medicine) Physician
Medicare Part D claims
2,664 142% vs specialty avg
Specialty distribution in Maryland
How Critical Care Medicine (Internal Medicine) Physician compares to other specialties among Maryland 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 Critical Care Medicine (Internal Medicine) 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 | 1659363885 |
|---|---|
| Specialty | Critical Care Medicine (Internal Medicine) Physician |
| Credentials | MD |
| Gender | Female |
| NPI Issued | 08/15/2005 |
Hospital and facility affiliations
Facilities where Fiona Meller Azrieli, 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.
Kaiser Foundation Health Plan OF The Mid Atlantic States, Inc
Baltimore, MD
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
Fiona Meller Azrieli, MD - brand share 48.0%
Critical Care Medicine (Internal Medicine) Physician average
48% brand-name claims vs 52% generic, on 2,664 2024 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 2024.
2,664
Total Claims
$1.6M
Total Drug Cost
561
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 5,970.4
- Total Day Supply
- 173,030
- Brand vs Generic
- 48% brand / 52% generic
- Brand Drug Cost
- $1.4M
- Generic Drug Cost
- $198K
- Antibiotic Claims
- 61
Patient Demographics
- Average Patient Age
- 73.5 years
- Avg HCC Risk Score
- 1.75
- Gender Split
- 60% female / 40% male
- Age Distribution
- <65: 51, 65-74: 255, 75-84: 208, 85+: 47
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2024. Based on Medicare Part D data only.
What Fiona Meller Azrieli, MD prescribes most
Top Medicare Part D drugs by claim count, 2024
- Spiriva Respimat
Spiriva Respimat
351 claims
- Wixela Inhub
Wixela Inhub
329 claims
- Stiolto Respimat
Stiolto Respimat
285 claims
- Albuterol Sulfate …
Albuterol Sulfate Hfa
257 claims
- Breyna
Breyna
236 claims
- Alvesco
Alvesco
169 claims
- Azelastine Hcl 129
Azelastine Hcl
129 claims
- Montelukast Sodium 126
Montelukast Sodium
126 claims
| Drug | Claims |
|---|---|
| Spiriva Respimat Tiotropium Bromide | 351 |
| Wixela Inhub Fluticasone Propion/Salmeterol | 329 |
| Stiolto Respimat Tiotropium Br/Olodaterol Hcl | 285 |
| Albuterol Sulfate Hfa Albuterol Sulfate | 257 |
| Breyna Budesonide/Formoterol Fumarate | 236 |
| Alvesco Ciclesonide | 169 |
| Azelastine Hcl | 129 |
| Montelukast Sodium | 126 |
| Prednisone | 95 |
| Advair Hfa Fluticasone Propion/Salmeterol | 71 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
More Critical Care Medicine (Internal Medicine) Physician in MD →
All providers in Maryland →
Compare specialties →
Critical Care Medicine (Internal Medicine) Physician Overview
How Fiona Meller Azrieli, MD fits within the Critical Care Medicine (Internal Medicine) Physician landscape nationally.
6,916
Critical Care Medicine (Internal Medicine) Physician Providers in US
53
States with Critical Care Medicine (Internal Medicine) Physician
1,103
Avg Claims per Provider
Fiona Meller Azrieli, MD's 2,664 claims are above the specialty average of 1,103.
Nationwide Critical Care Medicine (Internal Medicine) Physician peers with similar MIPS or enrollment year
Two federal-record peer sets for Meller Azrieli, both outside Maryland so the neighborhoods are not geographic containment.
Same NPPES enumeration year (2005)
Same-specialty clinicians who entered the NPI registry in the same calendar year, outside this state.
Nearby Critical Care Medicine (Internal Medicine) Physician Providers in Maryland
Other clinicians with the same primary specialty enrolled in Maryland, drawn from the same CMS NPPES roster as Meller Azrieli.
One of 217 Critical Care Medicine (Internal Medicine) Physician providers enrolled in Maryland, 5 are shown here.
Frequently Asked Questions
What is Fiona Meller Azrieli, MD's specialty? ▼
Fiona Meller Azrieli, MD specializes in Critical Care Medicine (Internal Medicine) Physician and practices in Halethorpe, Maryland. Credentials: MD.
How much does Fiona Meller Azrieli, MD prescribe under Medicare Part D? ▼
In 2024, Fiona Meller Azrieli, MD wrote 2,664 Medicare Part D claims totaling $1.6M in drug costs for 561 beneficiaries.
Where is Fiona Meller Azrieli, MD located? ▼
Fiona Meller Azrieli, MD is located at 1701 TWIN SPRINGS RD, Halethorpe, MD, 21227. Phone: (410) 737-5520.
What is Fiona Meller Azrieli, MD's NPI number? ▼
Fiona Meller Azrieli, MD's National Provider Identifier (NPI) is 1659363885, issued on 08/15/2005.
Does Fiona Meller Azrieli, MD prescribe more brand-name or generic drugs? ▼
Fiona Meller Azrieli, MD's prescribing is 48% brand-name and 52% generic drugs by claim count, with $1.4M in brand drug costs.
How many Critical Care Medicine (Internal Medicine) Physician providers are there in the US? ▼
There are 6,916 Critical Care Medicine (Internal Medicine) Physician providers across 53 states in the US. The average Critical Care Medicine (Internal Medicine) Physician provider writes 1,103 Medicare Part D claims per year.
What drugs does Fiona Meller Azrieli, MD prescribe most often? ▼
Based on 2024 Medicare Part D data, Fiona Meller Azrieli, MD's most frequently prescribed drugs include Spiriva Respimat, Wixela Inhub, Stiolto Respimat. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Fiona Meller Azrieli, MD accept Medicare? ▼
Fiona Meller Azrieli, MD appears in CMS Medicare data with 2,664 Part D claims and 561 Medicare beneficiaries in 2024. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Fiona Meller Azrieli, MD's credentials? ▼
Fiona Meller Azrieli, MD's NPI is 1659363885 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 (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.