NPI registry status
Active
2026 NPPES data Internal Medicine Physician NPI 1578522280 MD
Verify on CMS → Florin Rusu, MD
Internal Medicine Physician in Frederick, 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 172,737 in 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
462
Medicare Part D claims · 144 beneficiaries · Internal Medicine Physician avg: 3K
Industry payments
$17.76
1 payments · CMS Open Payments (Sunshine Act)
What the federal data shows
Florin Rusu, MD filed 462 Medicare Part D claims in 2023 as an Internal Medicine Physician in Frederick, Maryland.
- 462
- Part D claims, 2023
- 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.
Florin Rusu, MD's Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
462 Top 38% higher than 62% 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)
Florin Rusu, 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 Florin Rusu, MD?
Quality data not reportedPrimary specialty
Internal Medicine Physician
Medicare Part D claims
462 83% vs specialty avg
Specialty distribution in Maryland
How 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 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).
Florin Rusu, MD appears in the CMS NPPES registry as an Internal Medicine Physician provider holding MD credentials at 400 W SEVENTH ST, Frederick, MD, 21701, with a listed phone of (843) 237-3378. NPI 1578522280 was issued on 03/21/2006.
Medicare Part D records for calendar year 2023 show 462 prescription claims written by this provider, covering 144 Medicare beneficiaries and totaling roughly $29K in drug spend, with an opioid prescribing rate of 4.8%.
Internal Medicine Physician is a high-volume specialty nationwide, with 172,737 enrolled providers across 56 states and an average of 2,716 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 | 1578522280 |
|---|---|
| Specialty | Internal Medicine Physician |
| Credentials | MD |
| Gender | Male |
| NPI Issued | 03/21/2006 |
Hospital and facility affiliations
Facilities where Florin Rusu, 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.
Hospitalist Medicine Physicians OF Maryland PC
Frederick, 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).
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 Florin Rusu, MD. Source: openpaymentsdata.cms.gov.
Total received
$18
Largest payer
Janssen Pharmaceuticals, 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 2023.
462
Total Claims
$29K
Total Drug Cost
144
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 472
- Total Day Supply
- 10,575
- Generic Drug Cost
- $5K
- Opioid Claims
- 22 (4.8% rate)
- Antibiotic Claims
- 74
Patient Demographics
- Average Patient Age
- 73.5 years
- Avg HCC Risk Score
- 2.10
- Gender Split
- 53% female / 47% male
- Age Distribution
- <65: 22, 65-74: 49, 75-84: 53, 85+: 20
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Florin Rusu, MD prescribes most
Top Medicare Part D drugs by claim count, 2023
- Pantoprazole Sodium
Pantoprazole Sodium
28 claims
- Prednisone
Prednisone
25 claims
- Atorvastatin Calcium
Atorvastatin Calcium
19 claims
- Clopidogrel
Clopidogrel
18 claims
- Furosemide
Furosemide
18 claims
- Metoprolol Tartrate
Metoprolol Tartrate
18 claims
- Albuterol Sulfate …
Albuterol Sulfate Hfa
15 claims
- Cefuroxime
Cefuroxime
15 claims
| Drug | Claims |
|---|---|
| Pantoprazole Sodium | 28 |
| Prednisone | 25 |
| Atorvastatin Calcium | 19 |
| Clopidogrel Clopidogrel Bisulfate | 18 |
| Furosemide | 18 |
| Metoprolol Tartrate | 18 |
| Albuterol Sulfate Hfa Albuterol Sulfate | 15 |
| Cefuroxime Cefuroxime Axetil | 15 |
| Eliquis Apixaban | 15 |
| Amoxicillin-Clavulanate Potass Amoxicillin/Potassium Clav | 13 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Internal Medicine Physician Overview
How Florin Rusu, MD fits within the Internal Medicine Physician landscape nationally.
172,737
Internal Medicine Physician Providers in US
56
States with Internal Medicine Physician
2,716
Avg Claims per Provider
Florin Rusu, MD's 462 claims are below the specialty average of 2,716.
Nearby Internal Medicine Physician Providers in Maryland
Other clinicians with the same primary specialty enrolled in Maryland, drawn from the same CMS NPPES roster as Rusu.
Dr. Joshua Aaron
MD
Elkton, MD
Dr. Alina Aasim
M.D.
Baltimore, MD
Dr. Eduardo Abarca Rojas
M.D.
Parkville, MD
Dr. Rasheed Abassi
M.D.
Clinton, MD
Dr. Shastine Abate
MD
Baltimore, MD
Compare Internal Medicine 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 Maryland medical board, federal registration is not a license check. Credential verification guide
- Weigh a second option: compare this provider with a nearby Internal Medicine 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 Florin Rusu, MD's specialty? ▼
Florin Rusu, MD specializes in Internal Medicine Physician and practices in Frederick, Maryland. Credentials: MD.
How much does Florin Rusu, MD prescribe under Medicare Part D? ▼
In 2023, Florin Rusu, MD wrote 462 Medicare Part D claims totaling $29K in drug costs for 144 beneficiaries.
Where is Florin Rusu, MD located? ▼
Florin Rusu, MD is located at 400 W SEVENTH ST, Frederick, MD, 21701. Phone: (843) 237-3378.
What is Florin Rusu, MD's NPI number? ▼
Florin Rusu, MD's National Provider Identifier (NPI) is 1578522280, issued on 03/21/2006.
Does Florin Rusu, MD prescribe opioids? ▼
Yes, Florin Rusu, MD had 22 opioid claims in 2023 with an opioid prescribing rate of 4.8%.
How many Internal Medicine Physician providers are there in the US? ▼
There are 172,737 Internal Medicine Physician providers across 56 states in the US. The average Internal Medicine Physician provider writes 2,716 Medicare Part D claims per year.
What drugs does Florin Rusu, MD prescribe most often? ▼
Based on 2023 Medicare Part D data, Florin Rusu, MD's most frequently prescribed drugs include Pantoprazole Sodium, Prednisone, Atorvastatin Calcium. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Florin Rusu, MD accept Medicare? ▼
Florin Rusu, MD appears in CMS Medicare data with 462 Part D claims and 144 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Florin Rusu, MD's credentials? ▼
Florin Rusu, MD's NPI is 1578522280 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 (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
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 May 2026.