NPI registry status
Active
2026 NPPES data Internal Medicine Physician NPI 1538447628 M.D.
Verify on CMS → Eduardo Abarca Rojas, M.D.
Internal Medicine Physician in Parkville, 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 172,858 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
591
Medicare Part D claims · 104 beneficiaries · Internal Medicine Physician avg: 3K
Compiled from official public sources by the PlainDoctor editorial team.
What the federal data shows
Eduardo Abarca Rojas, M.D. filed 591 Medicare Part D claims in 2023 as a Internal Medicine Physician in Parkville, Maryland.
- 591
- 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.
Eduardo Abarca Rojas, M.D.'s Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
591 Top 34% higher than 66% 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)
Eduardo Abarca Rojas, M.D. practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + 3 hospital affiliations - 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 Eduardo Abarca Rojas, M.D.?
Quality data not reportedPrimary specialty
Internal Medicine Physician
Medicare Part D claims
591 78% 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).
Eduardo Abarca Rojas, M.D. appears in the CMS NPPES registry as a Internal Medicine Physician provider holding M.D. credentials at 8813 WALTHAM WOODS RD, Parkville, MD, 21234, with a listed phone of (410) 661-4670. NPI 1538447628 was issued on 07/24/2011.
Medicare Part D records for calendar year 2023 show 591 prescription claims written by this provider, covering 104 Medicare beneficiaries and totaling roughly $25K in drug spend, with an opioid prescribing rate of 3.4%.
Internal Medicine Physician is a high-volume specialty nationwide, with 172,858 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 | 1538447628 |
|---|---|
| Specialty | Internal Medicine Physician |
| Credentials | M.D. |
| Gender | Male |
| NPI Issued | 07/24/2011 |
Hospital and facility affiliations
Facilities where Eduardo Abarca Rojas, 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.
According to CMS billing records, Eduardo Abarca Rojas, M.D. is affiliated with 3 Medicare-billing facilities.
Adfinitas Health AT Upper Chesapeake Aberdeen LLC
Aberdeen, MD
Adfinitas Health AT Upper Chesapeake LLC
Bel Air, MD
Medstar Medical Group II LLC
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).
Medicare Part D Prescribing Data
CMS Medicare Part D prescriber-level data for calendar year 2023.
591
Total Claims
$25K
Total Drug Cost
104
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 591
- Total Day Supply
- 12,965
- Generic Drug Cost
- $13K
- Opioid Claims
- 20 (3.4% rate)
- Antibiotic Claims
- 19
Patient Demographics
- Average Patient Age
- 75.6 years
- Avg HCC Risk Score
- 3.26
- Gender Split
- 61% female / 39% male
- Age Distribution
- <65: 17, 65-74: 30, 75-84: 33, 85+: 24
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Eduardo Abarca Rojas, M.D. prescribes most
Top Medicare Part D drugs by claim count, 2023
- Amlodipine Besylate
Amlodipine Besylate
30 claims
- Atorvastatin Calcium
Atorvastatin Calcium
30 claims
- Metoprolol Tartrate
Metoprolol Tartrate
27 claims
- Clopidogrel
Clopidogrel
25 claims
- Furosemide
Furosemide
21 claims
- Losartan Potassium
Losartan Potassium
19 claims
- Donepezil Hcl
Donepezil Hcl
14 claims
- Pantoprazole Sodium
Pantoprazole Sodium
14 claims
| Drug | Claims |
|---|---|
| Amlodipine Besylate | 30 |
| Atorvastatin Calcium | 30 |
| Metoprolol Tartrate | 27 |
| Clopidogrel Clopidogrel Bisulfate | 25 |
| Furosemide | 21 |
| Losartan Potassium | 19 |
| Donepezil Hcl | 14 |
| Pantoprazole Sodium | 14 |
| Tamsulosin Hcl | 14 |
| Ropinirole Hcl | 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 Eduardo Abarca Rojas, M.D. fits within the Internal Medicine Physician landscape nationally.
172,858
Internal Medicine Physician Providers in US
56
States with Internal Medicine Physician
2,716
Avg Claims per Provider
Eduardo Abarca Rojas, M.D.'s 591 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 Abarca Rojas.
Dr. Joshua Aaron
MD
Elkton, MD
Dr. Alina Aasim
M.D.
Baltimore, MD
Dr. Rasheed Abassi
M.D.
Clinton, MD
Dr. Shastine Abate
MD
Baltimore, MD
Dr. Ghulam Abbas
MD
Frederick, 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.
Healthcare Guides
Learn more about finding, verifying, and understanding healthcare providers.
How to Find a Doctor
Step-by-step guide to choosing a provider
Verify Credentials
Check NPI, board certification & license status
Medical Specialties Explained
Who treats what and how specialties differ
Understanding Medicare Claims Data
What prescribing data reveals about a provider
In-Network vs Out-of-Network
How insurance networks affect your costs
Telehealth Guide
Virtual care options and coverage in 2026
Explore Maryland
Frequently Asked Questions
What is Eduardo Abarca Rojas, M.D.'s specialty? ▼
Eduardo Abarca Rojas, M.D. specializes in Internal Medicine Physician and practices in Parkville, Maryland. Credentials: M.D..
How much does Eduardo Abarca Rojas, M.D. prescribe under Medicare Part D? ▼
In 2023, Eduardo Abarca Rojas, M.D. wrote 591 Medicare Part D claims totaling $25K in drug costs for 104 beneficiaries.
Where is Eduardo Abarca Rojas, M.D. located? ▼
Eduardo Abarca Rojas, M.D. is located at 8813 WALTHAM WOODS RD, Parkville, MD, 21234. Phone: (410) 661-4670.
What is Eduardo Abarca Rojas, M.D.'s NPI number? ▼
Eduardo Abarca Rojas, M.D.'s National Provider Identifier (NPI) is 1538447628, issued on 07/24/2011.
Does Eduardo Abarca Rojas, M.D. prescribe opioids? ▼
Yes, Eduardo Abarca Rojas, M.D. had 20 opioid claims in 2023 with an opioid prescribing rate of 3.4%.
How many Internal Medicine Physician providers are there in the US? ▼
There are 172,858 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 Eduardo Abarca Rojas, M.D. prescribe most often? ▼
Based on 2023 Medicare Part D data, Eduardo Abarca Rojas, M.D.'s most frequently prescribed drugs include Amlodipine Besylate, Atorvastatin Calcium, Metoprolol Tartrate. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Eduardo Abarca Rojas, M.D. accept Medicare? ▼
Eduardo Abarca Rojas, M.D. appears in CMS Medicare data with 591 Part D claims and 104 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Eduardo Abarca Rojas, M.D.'s credentials? ▼
Eduardo Abarca Rojas, M.D.'s NPI is 1538447628 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.