2026 NPPES data Neurology Physician NPI 1316919111 M.D.
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LUIS FREYTES-LUGO, M.D.

Neurology Physician in SAN GERMAN, 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 · 527 beneficiaries · Neurology Physician avg: 1K
Generic prescribing
95%
generic claims · 5% brand-name · higher generic rates reduce patient out-of-pocket costs
Industry payments
$245.68
7 payments · CMS Open Payments (Sunshine Act)

What the federal data shows

LUIS FREYTES-LUGO, M.D. filed 3,385 Medicare Part D claims in 2023 as a Neurology Physician in SAN GERMAN, Puerto Rico, prescribing 95% generic.

3K
Part D claims, 2023
95%
generic prescribing
$245.68
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.

LUIS FREYTES-LUGO, M.D.'s Medicare Part D volume vs every U.S. prescriber

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

3,385 Top 10% higher than 90% 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)

LUIS FREYTES-LUGO, 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 LUIS FREYTES-LUGO, M.D.?

Quality data not reported

NPI registry status

Active

Issued 02/06/2006

NPI 1316919111

Primary specialty

Neurology Physician

Mid-sized

19,866 US NPIs in this specialty

Medicare Part D claims

3,385 159% vs specialty avg

2023 prescription claims

Specialty avg: 1,309

Specialty distribution in Puerto Rico

How Neurology Physician compares to other specialties among Puerto Rico providers

Puerto Rico providers

Neurology Physician share within Puerto Rico

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

Specialty board-certification context

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

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

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

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

LUIS FREYTES-LUGO, M.D. appears in the CMS NPPES registry as a Neurology Physician provider holding M.D. credentials at 87 AVE UNIV INTERAMERICANA, SAN GERMAN, PR, 00683, with a listed phone of (787) 264-0110. NPI 1316919111 was issued on 02/06/2006. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what FREYTES-LUGO 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 3,385 prescription claims written by this provider, covering 527 Medicare beneficiaries and totaling roughly $227K in drug spend, split 5% brand-name and 95% generic by claim count, with an opioid prescribing rate of 0.5%. 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.

Neurology Physician is a mid-sized specialty nationwide, with 19,866 enrolled providers across 54 states and an average of 1,309 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

87 AVE UNIV INTERAMERICANA
SAN GERMAN, PR 00683

Provider Details

NPI 1316919111
Specialty Neurology Physician
Credentials M.D.
Gender Male
NPI Issued 02/06/2006

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 LUIS FREYTES-LUGO, M.D.. Source: openpaymentsdata.cms.gov.

Total received

$246

Largest payer

ABBVIE INC.

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 · Generic-heavy

LUIS FREYTES-LUGO, M.D. — brand share 5.0%
Specialty average (est.)

5% brand-name claims vs 95% generic, on 3,385 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.

3,385
Total Claims
$227K
Total Drug Cost
527
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
3,534
Total Day Supply
104,908
Brand vs Generic
5% brand / 95% generic
Brand Drug Cost
$130K
Generic Drug Cost
$96K
Opioid Claims
16 (0.5% rate)

Patient Demographics

Average Patient Age
73.2 years
Avg HCC Risk Score
2.32
Gender Split
58% female / 42% male
Age Distribution
<65: 85, 65-74: 176, 75-84: 213, 85+: 53

Top Prescribed Drugs (Medicare Part D)

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

What LUIS FREYTES-LUGO, 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
Memantine Hcl
790
Galantamine Er
Galantamine Hbr
354
Donepezil Hcl
209
Memantine Hcl Er
Memantine Hcl
132
Butalbital-Acetaminophen-Caffe
Butalb/Acetaminophen/Caffeine
127
Carbidopa-Levodopa
Carbidopa/Levodopa
125
Risperidone
106
Amantadine
Amantadine Hcl
102
Gabapentin
94
Clonazepam
70

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

Neurology Physician Overview

How LUIS FREYTES-LUGO, M.D. fits within the Neurology Physician landscape nationally.

19,866
Neurology Physician Providers in US
54
States with Neurology Physician
1,309
Avg Claims per Provider

LUIS FREYTES-LUGO, M.D.'s 3,385 claims are above the specialty average of 1,309.

Nearby Neurology Physician Providers in Puerto Rico

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

Compare Neurology Physician nationally: see state-by-state distribution →

Frequently Asked Questions

What is LUIS FREYTES-LUGO, M.D.'s specialty?
LUIS FREYTES-LUGO, M.D. specializes in Neurology Physician and practices in SAN GERMAN, Puerto Rico. Credentials: M.D..
How much does LUIS FREYTES-LUGO, M.D. prescribe under Medicare Part D?
In 2023, LUIS FREYTES-LUGO, M.D. wrote 3,385 Medicare Part D claims totaling $227K in drug costs for 527 beneficiaries.
Where is LUIS FREYTES-LUGO, M.D. located?
LUIS FREYTES-LUGO, M.D. is located at 87 AVE UNIV INTERAMERICANA, SAN GERMAN, PR, 00683. Phone: (787) 264-0110.
What is LUIS FREYTES-LUGO, M.D.'s NPI number?
LUIS FREYTES-LUGO, M.D.'s National Provider Identifier (NPI) is 1316919111, issued on 02/06/2006.
Does LUIS FREYTES-LUGO, M.D. prescribe more brand-name or generic drugs?
LUIS FREYTES-LUGO, M.D.'s prescribing is 5% brand-name and 95% generic drugs by claim count, with $130K in brand drug costs.
Does LUIS FREYTES-LUGO, M.D. prescribe opioids?
Yes, LUIS FREYTES-LUGO, M.D. had 16 opioid claims in 2023 with an opioid prescribing rate of 0.5%.
How many Neurology Physician providers are there in the US?
There are 19,866 Neurology Physician providers across 54 states in the US. The average Neurology Physician provider writes 1,309 Medicare Part D claims per year.
What drugs does LUIS FREYTES-LUGO, M.D. prescribe most often?
Based on 2023 Medicare Part D data, LUIS FREYTES-LUGO, M.D.'s most frequently prescribed drugs include Memantine Hcl, Galantamine Er, Donepezil Hcl. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does LUIS FREYTES-LUGO, M.D. accept Medicare?
LUIS FREYTES-LUGO, M.D. appears in CMS Medicare data with 3,385 Part D claims and 527 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify LUIS FREYTES-LUGO, M.D.'s credentials?
LUIS FREYTES-LUGO, M.D.'s NPI is 1316919111 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