2026 NPPES data Emergency Medicine Physician NPI 1508069204 MD
Verify on CMS →

MARIA RAMOS-FERNANDEZ, MD

Emergency Medicine Physician in CAROLINA, Puerto Rico. 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
341
Medicare Part D claims · 189 beneficiaries · Emergency Medicine Physician avg: 352
Generic prescribing
95%
generic claims · 5% brand-name · higher generic rates reduce patient out-of-pocket costs

What the federal data shows

MARIA RAMOS-FERNANDEZ, MD filed 341 Medicare Part D claims in 2023 as a Emergency Medicine Physician in CAROLINA, Puerto Rico, prescribing 95% generic.

341
Part D claims, 2023
95%
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.

MARIA RAMOS-FERNANDEZ, MD's Medicare Part D volume vs every U.S. prescriber

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

341 Top 43% higher than 57% of 1,370,886 prescribers

0–200: 670,926 prescribers (49%). Below this entry. 200–400: 182,923 prescribers (13%). This entry sits in this band. 400–600: 90,619 prescribers (7%). Above this entry. 600–800: 56,224 prescribers (4%). Above this entry. 800–1,000: 40,919 prescribers (3%). Above this entry. 1,000–1,200: 31,827 prescribers (2%). Above this entry. 1,200–1,400: 26,224 prescribers (2%). Above this entry. 1,400–1,600: 21,710 prescribers (2%). Above this entry. 1,600–1,800: 19,072 prescribers (1%). Above this entry. 1,800–2,000: 16,451 prescribers (1%). Above this entry. 2,000–2,200: 213,991 prescribers (16%). Above this entry. 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)

MARIA RAMOS-FERNANDEZ, MD practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + 2 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 MARIA RAMOS-FERNANDEZ, MD?

Quality data not reported

NPI registry status

Active

Issued 06/08/2007

NPI 1508069204

Primary specialty

Emergency Medicine Physician

High-volume

64,398 US NPIs in this specialty

Medicare Part D claims

341 3% vs specialty avg

2023 prescription claims

Specialty avg: 352

Specialty distribution in Puerto Rico

How Emergency Medicine Physician compares to other specialties among Puerto Rico providers

Puerto Rico providers

Emergency Medicine Physician share within Puerto Rico

1. Emergency Medicine Physician42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Emergency Medicine Physician share within Puerto Rico

Specialty board-certification context

Estimated specialty board-certified rate — Emergency Medicine Physician (ABMS / AOA reference)

Quality data not reported
Est. board-certified rate
78%
Emergency Medicine Physician ABMS/AOA estimate

Est. board-certified rate (Emergency Medicine Physician) — ABMS / AOA estimate

0%100%78%
Est. board-certified rate (Emergency 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).

MARIA RAMOS-FERNANDEZ, MD appears in the CMS NPPES registry as a Emergency Medicine Physician provider holding MD credentials at HOSPITAL DR. FEDERICO TRILLA, CAROLINA, PR, 00985, with a listed phone of (787) 757-1118. NPI 1508069204 was issued on 06/08/2007. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what RAMOS-FERNANDEZ 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 341 prescription claims written by this provider, covering 189 Medicare beneficiaries and totaling roughly $9K in drug spend, split 5% brand-name and 95% generic by claim count, with an opioid prescribing rate of 19.1%. 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.

Emergency Medicine Physician is a high-volume specialty nationwide, with 64,398 enrolled providers across 56 states and an average of 352 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

HOSPITAL DR. FEDERICO TRILLA
CAROLINA, PR 00985

Provider Details

NPI 1508069204
Specialty Emergency Medicine Physician
Credentials MD
Gender Female
NPI Issued 06/08/2007

Hospital and facility affiliations

Facilities where MARIA RAMOS-FERNANDEZ, 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.

CENTRO DE CANCER DE LA UNIVERSIDAD
SAN JUAN, PR
RECINTO DE CIENCIAS MEDICAS
CAROLINA, PR

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 · Generic-heavy

MARIA RAMOS-FERNANDEZ, MD — brand share 5.0%
Specialty average (est.)

5% brand-name claims vs 95% generic, on 341 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.

341
Total Claims
$9K
Total Drug Cost
189
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
347
Total Day Supply
5,323
Brand vs Generic
5% brand / 95% generic
Brand Drug Cost
$3K
Generic Drug Cost
$6K
Opioid Claims
65 (19.1% rate)
Antibiotic Claims
43

Patient Demographics

Average Patient Age
72.0 years
Avg HCC Risk Score
1.90
Gender Split
61% female / 39% male
Age Distribution
<65: 36, 65-74: 71, 75-84: 61, 85+: 21

Top Prescribed Drugs (Medicare Part D)

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

What MARIA RAMOS-FERNANDEZ, 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
Gabapentin
30
Oxycodone-Acetaminophen
Oxycodone Hcl/Acetaminophen
28
Famotidine
26
Amoxicillin-Clavulanate Potass
Amoxicillin/Potassium Clav
24
Fentanyl
19
Naproxen
19
Prednisone
11

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

Emergency Medicine Physician Overview

How MARIA RAMOS-FERNANDEZ, MD fits within the Emergency Medicine Physician landscape nationally.

64,398
Emergency Medicine Physician Providers in US
56
States with Emergency Medicine Physician
352
Avg Claims per Provider

MARIA RAMOS-FERNANDEZ, MD's 341 claims are below the specialty average of 352.

Nearby Emergency Medicine Physician Providers in Puerto Rico

Other clinicians with the same primary specialty enrolled in Puerto Rico, drawn from the same CMS NPPES roster as RAMOS-FERNANDEZ.

Compare Emergency Medicine Physician nationally: see state-by-state distribution →

Frequently Asked Questions

What is MARIA RAMOS-FERNANDEZ, MD's specialty?
MARIA RAMOS-FERNANDEZ, MD specializes in Emergency Medicine Physician and practices in CAROLINA, Puerto Rico. Credentials: MD.
How much does MARIA RAMOS-FERNANDEZ, MD prescribe under Medicare Part D?
In 2023, MARIA RAMOS-FERNANDEZ, MD wrote 341 Medicare Part D claims totaling $9K in drug costs for 189 beneficiaries.
Where is MARIA RAMOS-FERNANDEZ, MD located?
MARIA RAMOS-FERNANDEZ, MD is located at HOSPITAL DR. FEDERICO TRILLA, CAROLINA, PR, 00985. Phone: (787) 757-1118.
What is MARIA RAMOS-FERNANDEZ, MD's NPI number?
MARIA RAMOS-FERNANDEZ, MD's National Provider Identifier (NPI) is 1508069204, issued on 06/08/2007.
Does MARIA RAMOS-FERNANDEZ, MD prescribe more brand-name or generic drugs?
MARIA RAMOS-FERNANDEZ, MD's prescribing is 5% brand-name and 95% generic drugs by claim count, with $3K in brand drug costs.
Does MARIA RAMOS-FERNANDEZ, MD prescribe opioids?
Yes, MARIA RAMOS-FERNANDEZ, MD had 65 opioid claims in 2023 with an opioid prescribing rate of 19.1%.
How many Emergency Medicine Physician providers are there in the US?
There are 64,398 Emergency Medicine Physician providers across 56 states in the US. The average Emergency Medicine Physician provider writes 352 Medicare Part D claims per year.
What drugs does MARIA RAMOS-FERNANDEZ, MD prescribe most often?
Based on 2023 Medicare Part D data, MARIA RAMOS-FERNANDEZ, MD's most frequently prescribed drugs include Gabapentin, Oxycodone-Acetaminophen, Famotidine. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does MARIA RAMOS-FERNANDEZ, MD accept Medicare?
MARIA RAMOS-FERNANDEZ, MD appears in CMS Medicare data with 341 Part D claims and 189 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify MARIA RAMOS-FERNANDEZ, MD's credentials?
MARIA RAMOS-FERNANDEZ, MD's NPI is 1508069204 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