2026 NPPES data General Practice Physician NPI 1144479528 MD
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MERARI TAVAREZ, MD

General Practice Physician in CAMUY, 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
6K
Medicare Part D claims · 218 beneficiaries · General Practice Physician avg: 3K
Generic prescribing
85%
generic claims · 15% brand-name · higher generic rates reduce patient out-of-pocket costs
Industry payments
$20.06
1 payments · CMS Open Payments (Sunshine Act)

What the federal data shows

MERARI TAVAREZ, MD filed 6,120 Medicare Part D claims in 2023 as a General Practice Physician in CAMUY, Puerto Rico, prescribing 85% generic.

6K
Part D claims, 2023
85%
generic prescribing
$20.06
industry payments (Sunshine Act)

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.

MERARI TAVAREZ, MD's Medicare Part D volume vs every U.S. prescriber

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

6,120 Top 5% higher than 95% 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-eligible specialty (heuristic — not verified)

MERARI TAVAREZ, MD practices in an ABMS-board-eligible specialty but we don't have enough CMS-participation signals to confirm active board-certified status. Consult CertificationMatters.org (the official ABMS public lookup).

What does the federal data show about MERARI TAVAREZ, MD?

Quality data not reported

NPI registry status

Active

Issued 09/10/2008

NPI 1144479528

Primary specialty

General Practice Physician

Mid-sized

16,677 US NPIs in this specialty

Medicare Part D claims

6,120 113% vs specialty avg

2023 prescription claims

Specialty avg: 2,872

Specialty distribution in Puerto Rico

How General Practice Physician compares to other specialties among Puerto Rico providers

Puerto Rico providers

General Practice Physician share within Puerto Rico

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

Specialty board-certification context

Estimated specialty board-certified rate — General Practice Physician (ABMS / AOA reference)

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

Est. board-certified rate (General Practice Physician) — ABMS / AOA estimate

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

MERARI TAVAREZ, MD appears in the CMS NPPES registry as a General Practice Physician provider holding MD credentials at CARR 486 KM 1.7, CAMUY, PR, 00627, with a listed phone of (787) 544-6745. NPI 1144479528 was issued on 09/10/2008. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what TAVAREZ 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 6,120 prescription claims written by this provider, covering 218 Medicare beneficiaries and totaling roughly $433K in drug spend, split 15% brand-name and 85% generic by claim count, with an opioid prescribing rate of 1.7%. 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.

General Practice Physician is a mid-sized specialty nationwide, with 16,677 enrolled providers across 56 states and an average of 2,872 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

CARR 486 KM 1.7
CAMUY, PR 00627

Provider Details

NPI 1144479528
Specialty General Practice Physician
Credentials MD
Gender Female
NPI Issued 09/10/2008

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 MERARI TAVAREZ, MD. Source: openpaymentsdata.cms.gov.

Total received

$20

Largest payer

AstraZeneca Pharmaceuticals LP

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.

Brand vs generic prescribing mix · Typical

MERARI TAVAREZ, MD — brand share 15.0%
Specialty average (est.)

15% brand-name claims vs 85% generic, on 6,120 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.

6,120
Total Claims
$433K
Total Drug Cost
218
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
9,526
Total Day Supply
271,478
Brand vs Generic
15% brand / 85% generic
Brand Drug Cost
$361K
Generic Drug Cost
$69K
Opioid Claims
103 (1.7% rate)
Antibiotic Claims
140

Patient Demographics

Average Patient Age
70.0 years
Avg HCC Risk Score
1.86
Gender Split
62% female / 38% male
Age Distribution
<65: 56, 65-74: 82, 75-84: 69, 85+: 11

Top Prescribed Drugs (Medicare Part D)

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

What MERARI TAVAREZ, 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
355
Synthroid
Levothyroxine Sodium
251
Atorvastatin Calcium
218
Clonazepam
188
Simvastatin
172
Losartan Potassium
154
Omeprazole
139
Famotidine
128
Metformin Hcl
127
Pantoprazole Sodium
125

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

General Practice Physician Overview

How MERARI TAVAREZ, MD fits within the General Practice Physician landscape nationally.

16,677
General Practice Physician Providers in US
56
States with General Practice Physician
2,872
Avg Claims per Provider

MERARI TAVAREZ, MD's 6,120 claims are above the specialty average of 2,872.

Nearby General Practice Physician Providers in Puerto Rico

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

Compare General Practice Physician nationally: see state-by-state distribution →

Frequently Asked Questions

What is MERARI TAVAREZ, MD's specialty?
MERARI TAVAREZ, MD specializes in General Practice Physician and practices in CAMUY, Puerto Rico. Credentials: MD.
How much does MERARI TAVAREZ, MD prescribe under Medicare Part D?
In 2023, MERARI TAVAREZ, MD wrote 6,120 Medicare Part D claims totaling $433K in drug costs for 218 beneficiaries.
Where is MERARI TAVAREZ, MD located?
MERARI TAVAREZ, MD is located at CARR 486 KM 1.7, CAMUY, PR, 00627. Phone: (787) 544-6745.
What is MERARI TAVAREZ, MD's NPI number?
MERARI TAVAREZ, MD's National Provider Identifier (NPI) is 1144479528, issued on 09/10/2008.
Does MERARI TAVAREZ, MD prescribe more brand-name or generic drugs?
MERARI TAVAREZ, MD's prescribing is 15% brand-name and 85% generic drugs by claim count, with $361K in brand drug costs.
Does MERARI TAVAREZ, MD prescribe opioids?
Yes, MERARI TAVAREZ, MD had 103 opioid claims in 2023 with an opioid prescribing rate of 1.7%.
How many General Practice Physician providers are there in the US?
There are 16,677 General Practice Physician providers across 56 states in the US. The average General Practice Physician provider writes 2,872 Medicare Part D claims per year.
What drugs does MERARI TAVAREZ, MD prescribe most often?
Based on 2023 Medicare Part D data, MERARI TAVAREZ, MD's most frequently prescribed drugs include Gabapentin, Synthroid, Atorvastatin Calcium. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does MERARI TAVAREZ, MD accept Medicare?
MERARI TAVAREZ, MD appears in CMS Medicare data with 6,120 Part D claims and 218 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify MERARI TAVAREZ, MD's credentials?
MERARI TAVAREZ, MD's NPI is 1144479528 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