2026 NPPES data Critical Care Medicine (Internal Medicine) Physician NPI 1659363885 MD
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FIONA MELLER AZRIELI, MD

Critical Care Medicine (Internal Medicine) Physician in HALETHORPE, Maryland. CMS National Plan and Provider Enumeration System profile including specialty classification, practice address, and Medicare prescribing data when reported.

Federal data — no proprietary rating. PlainDoctor publishes the actual CMS NPPES and Medicare records — NPI registration, specialty, practice location, and prescribing data — without a composite score or editorial opinion on top. Every field traces to a federal source.
Prescribing volume
3K
Medicare Part D claims · 654 beneficiaries · Critical Care Medicine (Internal Medicine) Physician avg: 1K
Generic prescribing
42%
generic claims · 58% brand-name · higher generic rates reduce patient out-of-pocket costs

What the federal data shows

FIONA MELLER AZRIELI, MD filed 2,945 Medicare Part D claims in 2023 as a Critical Care Medicine (Internal Medicine) Physician in HALETHORPE, Maryland, prescribing 42% generic.

3K
Part D claims, 2023
42%
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.

FIONA MELLER AZRIELI, MD's Medicare Part D volume vs every U.S. prescriber

Total Medicare Part D claims, 2023 — across all CMS prescribers nationally

2,945 Top 12% higher than 88% of 1,370,886 prescribers

0–200: 670,926 prescribers (49%). Below this entry. 200–400: 182,923 prescribers (13%). Below this entry. 400–600: 90,619 prescribers (7%). Below this entry. 600–800: 56,224 prescribers (4%). Below this entry. 800–1,000: 40,919 prescribers (3%). Below this entry. 1,000–1,200: 31,827 prescribers (2%). Below this entry. 1,200–1,400: 26,224 prescribers (2%). Below this entry. 1,400–1,600: 21,710 prescribers (2%). Below this entry. 1,600–1,800: 19,072 prescribers (1%). Below this entry. 1,800–2,000: 16,451 prescribers (1%). Below this entry. 2,000–2,200: 213,991 prescribers (16%). This entry sits in this band. This provider 0 2K+ every Part D prescriber (claims/yr), bucketed by value

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)

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 reported

NPI registry status

Active

Issued 08/15/2005

NPI 1659363885

Primary specialty

Critical Care Medicine (Internal Medicine) Physician

Mid-sized

6,631 US NPIs in this specialty

Medicare Part D claims

2,945 175% vs specialty avg

2023 prescription claims

Specialty avg: 1,069

Specialty distribution in Maryland

How Critical Care Medicine (Internal Medicine) Physician compares to other specialties among Maryland providers

Maryland providers

Critical Care Medicine (Internal Medicine) Physician share within Maryland

1. Critical Care Medicine (Internal Medicine) Physician42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Critical Care Medicine (Internal Medicine) Physician share within Maryland

Specialty board-certification context

Estimated specialty board-certified rate — Critical Care Medicine (Internal Medicine) Physician (ABMS / AOA reference)

Quality data not reported
Est. board-certified rate
78%
Critical Care Medicine (Internal Medicine) Physician ABMS/AOA estimate

Est. board-certified rate (Critical Care Medicine (Internal Medicine) Physician) — ABMS / AOA estimate

0%100%78%
Est. board-certified rate (Critical Care Medicine (Internal Medicine) Physician) — ABMS / AOA estimate

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).

FIONA MELLER AZRIELI, MD appears in the CMS NPPES registry as a Critical Care Medicine (Internal Medicine) Physician provider holding MD credentials at 1701 TWIN SPRINGS RD, HALETHORPE, MD, 21227, with a listed phone of (410) 737-5520. NPI 1659363885 was issued on 08/15/2005. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what MELLER AZRIELI most recently submitted to CMS rather than a vetted directory listing, which is why patients should always confirm the practice is still at this location before scheduling.

Medicare Part D records for calendar year 2023 show 2,945 prescription claims written by this provider, covering 654 Medicare beneficiaries and totaling roughly $1.8 million in drug spend, split 58% brand-name and 42% generic by claim count. These figures capture only Medicare Part D — commercial insurance, Medicaid, and cash-pay prescriptions are not included, and any drug-beneficiary cell under 11 is suppressed by CMS for patient privacy.

Critical Care Medicine (Internal Medicine) Physician is a mid-sized specialty nationwide, with 6,631 enrolled providers across 53 states and an average of 1,069 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

1701 TWIN SPRINGS RD
HALETHORPE, MD 21227

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 · Brand-heavy

FIONA MELLER AZRIELI, MD — brand share 58.0%
Specialty average (est.)

58% brand-name claims vs 42% generic, on 2,945 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.

2,945
Total Claims
$1.8M
Total Drug Cost
654
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
6,418
Total Day Supply
185,423
Brand vs Generic
58% brand / 42% generic
Brand Drug Cost
$1.7M
Generic Drug Cost
$153K
Antibiotic Claims
76

Patient Demographics

Average Patient Age
72.6 years
Avg HCC Risk Score
1.83
Gender Split
61% female / 39% male
Age Distribution
<65: 75, 65-74: 307, 75-84: 226, 85+: 46

Top Prescribed Drugs (Medicare Part D)

Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.

What FIONA MELLER AZRIELI, MD prescribes most

Top Medicare Part D drugs by claim count, 2023

claims
Source CMS Medicare Part D Prescriber Public Use File As of 2023
Drug Claims
Spiriva Respimat
Tiotropium Bromide
453
Wixela Inhub
Fluticasone Propion/Salmeterol
404
Stiolto Respimat
Tiotropium Br/Olodaterol Hcl
354
Albuterol Sulfate Hfa
Albuterol Sulfate
326
Symbicort
Budesonide/Formoterol Fumarate
209
Alvesco
Ciclesonide
162
Montelukast Sodium
126
Azelastine Hcl
122
Prednisone
116
Advair Hfa
Fluticasone Propion/Salmeterol
83

* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.

Critical Care Medicine (Internal Medicine) Physician Overview

How FIONA MELLER AZRIELI, MD fits within the Critical Care Medicine (Internal Medicine) Physician landscape nationally.

6,631
Critical Care Medicine (Internal Medicine) Physician Providers in US
53
States with Critical Care Medicine (Internal Medicine) Physician
1,069
Avg Claims per Provider

FIONA MELLER AZRIELI, MD's 2,945 claims are above the specialty average of 1,069.

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.

Compare Critical Care Medicine (Internal Medicine) Physician nationally: see state-by-state distribution →

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 2023, FIONA MELLER AZRIELI, MD wrote 2,945 Medicare Part D claims totaling $1.8M in drug costs for 654 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 58% brand-name and 42% generic drugs by claim count, with $1.7M in brand drug costs.
How many Critical Care Medicine (Internal Medicine) Physician providers are there in the US?
There are 6,631 Critical Care Medicine (Internal Medicine) Physician providers across 53 states in the US. The average Critical Care Medicine (Internal Medicine) Physician provider writes 1,069 Medicare Part D claims per year.
What drugs does FIONA MELLER AZRIELI, MD prescribe most often?
Based on 2023 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 2,945 Part D claims and 654 Medicare beneficiaries in 2023. 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

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