2026 NPPES data Geriatric Medicine (Internal Medicine) Physician NPI 1144514555 M.D.
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LILIANA RAMOS-PEREZ, M.D.

Geriatric Medicine (Internal Medicine) Physician in GUAYNABO, 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
2K
Medicare Part D claims · 136 beneficiaries · Geriatric Medicine (Internal Medicine) Physician avg: 4K

What the federal data shows

LILIANA RAMOS-PEREZ, M.D. filed 1,686 Medicare Part D claims in 2023 as a Geriatric Medicine (Internal Medicine) Physician in GUAYNABO, Puerto Rico.

2K
Part D claims, 2023

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.

LILIANA RAMOS-PEREZ, M.D.'s Medicare Part D volume vs every U.S. prescriber

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

1,686 Top 18% higher than 82% 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%). This entry sits in this band. 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-eligible specialty (heuristic — not verified)

LILIANA RAMOS-PEREZ, M.D. 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 LILIANA RAMOS-PEREZ, M.D.?

Quality data not reported

NPI registry status

Active

Issued 06/02/2011

NPI 1144514555

Primary specialty

Geriatric Medicine (Internal Medicine) Physician

Niche

4,161 US NPIs in this specialty

Medicare Part D claims

1,686 62% vs specialty avg

2023 prescription claims

Specialty avg: 4,450

Specialty distribution in Puerto Rico

How Geriatric Medicine (Internal Medicine) Physician compares to other specialties among Puerto Rico providers

Puerto Rico providers

Geriatric Medicine (Internal Medicine) Physician share within Puerto Rico

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

Specialty board-certification context

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

Quality data not reported
Est. board-certified rate
78%
Geriatric Medicine (Internal Medicine) Physician ABMS/AOA estimate

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

0%100%78%
Est. board-certified rate (Geriatric Medicine (Internal 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).

LILIANA RAMOS-PEREZ, M.D. appears in the CMS NPPES registry as a Geriatric Medicine (Internal Medicine) Physician provider holding M.D. credentials at 10 AVENIDA LAS CUMBRES, GUAYNABO, PR, 00969, with a listed phone of (787) 223-5442. NPI 1144514555 was issued on 06/02/2011. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what RAMOS-PEREZ 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 1,686 prescription claims written by this provider, covering 136 Medicare beneficiaries and totaling roughly $138K in drug spend. 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.

Geriatric Medicine (Internal Medicine) Physician is a narrow specialty nationwide, with 4,161 enrolled providers across 52 states and an average of 4,450 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

10 AVENIDA LAS CUMBRES
GUAYNABO, PR 00969

Provider Details

NPI 1144514555
Specialty Geriatric Medicine (Internal Medicine) Physician
Credentials M.D.
Gender Female
NPI Issued 06/02/2011

Medicare Part D Prescribing Data

CMS Medicare Part D prescriber-level data for calendar year 2023.

1,686
Total Claims
$138K
Total Drug Cost
136
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
3,808
Total Day Supply
109,082
Generic Drug Cost
$38K
Antibiotic Claims
74

Patient Demographics

Average Patient Age
74.5 years
Avg HCC Risk Score
1.38
Gender Split
74% female / 26% male

Top Prescribed Drugs (Medicare Part D)

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

What LILIANA RAMOS-PEREZ, M.D. 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
Losartan Potassium
104
Atorvastatin Calcium
94
Synthroid
Levothyroxine Sodium
74
Gabapentin
71
Famotidine
65
Rosuvastatin Calcium
59
Amlodipine Besylate
49
Metformin Hcl
46
Metoprolol Succinate
43
Clonazepam
36

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

Geriatric Medicine (Internal Medicine) Physician Overview

How LILIANA RAMOS-PEREZ, M.D. fits within the Geriatric Medicine (Internal Medicine) Physician landscape nationally.

4,161
Geriatric Medicine (Internal Medicine) Physician Providers in US
52
States with Geriatric Medicine (Internal Medicine) Physician
4,450
Avg Claims per Provider

LILIANA RAMOS-PEREZ, M.D.'s 1,686 claims are below the specialty average of 4,450.

Nearby Geriatric Medicine (Internal 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-PEREZ.

Compare Geriatric Medicine (Internal Medicine) Physician nationally: see state-by-state distribution →

Frequently Asked Questions

What is LILIANA RAMOS-PEREZ, M.D.'s specialty?
LILIANA RAMOS-PEREZ, M.D. specializes in Geriatric Medicine (Internal Medicine) Physician and practices in GUAYNABO, Puerto Rico. Credentials: M.D..
How much does LILIANA RAMOS-PEREZ, M.D. prescribe under Medicare Part D?
In 2023, LILIANA RAMOS-PEREZ, M.D. wrote 1,686 Medicare Part D claims totaling $138K in drug costs for 136 beneficiaries.
Where is LILIANA RAMOS-PEREZ, M.D. located?
LILIANA RAMOS-PEREZ, M.D. is located at 10 AVENIDA LAS CUMBRES, GUAYNABO, PR, 00969. Phone: (787) 223-5442.
What is LILIANA RAMOS-PEREZ, M.D.'s NPI number?
LILIANA RAMOS-PEREZ, M.D.'s National Provider Identifier (NPI) is 1144514555, issued on 06/02/2011.
How many Geriatric Medicine (Internal Medicine) Physician providers are there in the US?
There are 4,161 Geriatric Medicine (Internal Medicine) Physician providers across 52 states in the US. The average Geriatric Medicine (Internal Medicine) Physician provider writes 4,450 Medicare Part D claims per year.
What drugs does LILIANA RAMOS-PEREZ, M.D. prescribe most often?
Based on 2023 Medicare Part D data, LILIANA RAMOS-PEREZ, M.D.'s most frequently prescribed drugs include Losartan Potassium, Atorvastatin Calcium, Synthroid. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does LILIANA RAMOS-PEREZ, M.D. accept Medicare?
LILIANA RAMOS-PEREZ, M.D. appears in CMS Medicare data with 1,686 Part D claims and 136 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify LILIANA RAMOS-PEREZ, M.D.'s credentials?
LILIANA RAMOS-PEREZ, M.D.'s NPI is 1144514555 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

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