2026 NPPES data Family Medicine Physician NPI 1922093368 MD
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JULIO ARMANDO MARRERO-GUADALUPE, MD

Family Medicine Physician in CIDRA, 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
3K
Medicare Part D claims · 214 beneficiaries · Family Medicine Physician avg: 3K
Generic prescribing
79%
generic claims · 21% brand-name · higher generic rates reduce patient out-of-pocket costs

What the federal data shows

JULIO ARMANDO MARRERO-GUADALUPE, MD filed 3,119 Medicare Part D claims in 2023 as a Family Medicine Physician in CIDRA, Puerto Rico, prescribing 79% generic.

3K
Part D claims, 2023
79%
generic prescribing

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.

JULIO ARMANDO MARRERO-GUADALUPE, MD's Medicare Part D volume vs every U.S. prescriber

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

3,119 Top 11% higher than 89% 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)

JULIO ARMANDO MARRERO-GUADALUPE, 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 JULIO ARMANDO MARRERO-GUADALUPE, MD?

Quality data not reported

NPI registry status

Active

Issued 09/12/2005

NPI 1922093368

Primary specialty

Family Medicine Physician

High-volume

147,640 US NPIs in this specialty

Medicare Part D claims

3,119 9% vs specialty avg

2023 prescription claims

Specialty avg: 3,418

Specialty distribution in Puerto Rico

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

Puerto Rico providers

Family Medicine Physician share within Puerto Rico

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

Specialty board-certification context

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

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

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

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

JULIO ARMANDO MARRERO-GUADALUPE, MD appears in the CMS NPPES registry as a Family Medicine Physician provider holding MD credentials at AVE. EL JIBARO, CIDRA, PR, 00739, with a listed phone of (787) 739-8182. NPI 1922093368 was issued on 09/12/2005. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what MARRERO-GUADALUPE 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 3,119 prescription claims written by this provider, covering 214 Medicare beneficiaries and totaling roughly $406K in drug spend, split 21% brand-name and 79% 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.

Family Medicine Physician is a high-volume specialty nationwide, with 147,640 enrolled providers across 56 states and an average of 3,418 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

AVE. EL JIBARO
CIDRA, PR 00739

Provider Details

NPI 1922093368
Specialty Family Medicine Physician
Credentials MD
Gender Male
NPI Issued 09/12/2005

Brand vs generic prescribing mix · Typical

JULIO ARMANDO MARRERO-GUADALUPE, MD — brand share 21.0%
Specialty average (est.)

21% brand-name claims vs 79% generic, on 3,119 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.

3,119
Total Claims
$406K
Total Drug Cost
214
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
6,275
Total Day Supply
183,719
Brand vs Generic
21% brand / 79% generic
Brand Drug Cost
$360K
Generic Drug Cost
$43K
Antibiotic Claims
23

Patient Demographics

Average Patient Age
68.1 years
Avg HCC Risk Score
1.13
Gender Split
47% female / 53% male
Age Distribution
<65: 57, 65-74: 104, 75-84: 41, 85+: 12

Top Prescribed Drugs (Medicare Part D)

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

What JULIO ARMANDO MARRERO-GUADALUPE, 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
Atorvastatin Calcium
192
Lisinopril
164
Amlodipine Besylate
141
Losartan Potassium
128
Synthroid
Levothyroxine Sodium
120
Metformin Hcl
110
Famotidine
96
Gabapentin
96
Hydrochlorothiazide
76
Levothyroxine Sodium
74

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

Family Medicine Physician Overview

How JULIO ARMANDO MARRERO-GUADALUPE, MD fits within the Family Medicine Physician landscape nationally.

147,640
Family Medicine Physician Providers in US
56
States with Family Medicine Physician
3,418
Avg Claims per Provider

JULIO ARMANDO MARRERO-GUADALUPE, MD's 3,119 claims are below the specialty average of 3,418.

Nearby Family 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 MARRERO-GUADALUPE.

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

Frequently Asked Questions

What is JULIO ARMANDO MARRERO-GUADALUPE, MD's specialty?
JULIO ARMANDO MARRERO-GUADALUPE, MD specializes in Family Medicine Physician and practices in CIDRA, Puerto Rico. Credentials: MD.
How much does JULIO ARMANDO MARRERO-GUADALUPE, MD prescribe under Medicare Part D?
In 2023, JULIO ARMANDO MARRERO-GUADALUPE, MD wrote 3,119 Medicare Part D claims totaling $406K in drug costs for 214 beneficiaries.
Where is JULIO ARMANDO MARRERO-GUADALUPE, MD located?
JULIO ARMANDO MARRERO-GUADALUPE, MD is located at AVE. EL JIBARO, CIDRA, PR, 00739. Phone: (787) 739-8182.
What is JULIO ARMANDO MARRERO-GUADALUPE, MD's NPI number?
JULIO ARMANDO MARRERO-GUADALUPE, MD's National Provider Identifier (NPI) is 1922093368, issued on 09/12/2005.
Does JULIO ARMANDO MARRERO-GUADALUPE, MD prescribe more brand-name or generic drugs?
JULIO ARMANDO MARRERO-GUADALUPE, MD's prescribing is 21% brand-name and 79% generic drugs by claim count, with $360K in brand drug costs.
How many Family Medicine Physician providers are there in the US?
There are 147,640 Family Medicine Physician providers across 56 states in the US. The average Family Medicine Physician provider writes 3,418 Medicare Part D claims per year.
What drugs does JULIO ARMANDO MARRERO-GUADALUPE, MD prescribe most often?
Based on 2023 Medicare Part D data, JULIO ARMANDO MARRERO-GUADALUPE, MD's most frequently prescribed drugs include Atorvastatin Calcium, Lisinopril, Amlodipine Besylate. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does JULIO ARMANDO MARRERO-GUADALUPE, MD accept Medicare?
JULIO ARMANDO MARRERO-GUADALUPE, MD appears in CMS Medicare data with 3,119 Part D claims and 214 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify JULIO ARMANDO MARRERO-GUADALUPE, MD's credentials?
JULIO ARMANDO MARRERO-GUADALUPE, MD's NPI is 1922093368 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