2026 NPPES data Internal Medicine Physician NPI 1104875848 M.D.
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HECTOR SANTOS, M.D.

Internal 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
6K
Medicare Part D claims · 1K beneficiaries · Internal Medicine Physician avg: 3K
Generic prescribing
92%
generic claims · 8% brand-name · higher generic rates reduce patient out-of-pocket costs
Industry payments
$194.87
4 payments · CMS Open Payments (Sunshine Act)

What the federal data shows

HECTOR SANTOS, M.D. filed 6,175 Medicare Part D claims in 2023 as a Internal Medicine Physician in CAROLINA, Puerto Rico, prescribing 92% generic.

6K
Part D claims, 2023
92%
generic prescribing
$194.87
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.

HECTOR SANTOS, M.D.'s Medicare Part D volume vs every U.S. prescriber

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

6,175 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)

HECTOR SANTOS, 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 HECTOR SANTOS, M.D.?

Quality data not reported

NPI registry status

Active

Issued 05/09/2006

NPI 1104875848

Primary specialty

Internal Medicine Physician

High-volume

172,858 US NPIs in this specialty

Medicare Part D claims

6,175 127% vs specialty avg

2023 prescription claims

Specialty avg: 2,716

Specialty distribution in Puerto Rico

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

Puerto Rico providers

Internal Medicine Physician share within Puerto Rico

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

Specialty board-certification context

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

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

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

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

HECTOR SANTOS, M.D. appears in the CMS NPPES registry as a Internal Medicine Physician provider holding M.D. credentials at ESCORIAL BUILDING ONE 1400 AVENUE SUR SUITE160, CAROLINA, PR, 00987, with a listed phone of (787) 257-1511. NPI 1104875848 was issued on 05/09/2006. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what SANTOS 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 6,175 prescription claims written by this provider, covering 1,116 Medicare beneficiaries and totaling roughly $1.2 million in drug spend, split 8% brand-name and 92% 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.

Internal Medicine Physician is a high-volume specialty nationwide, with 172,858 enrolled providers across 56 states and an average of 2,716 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

ESCORIAL BUILDING ONE 1400 AVENUE SUR SUITE160
CAROLINA, PR 00987

Provider Details

NPI 1104875848
Specialty Internal Medicine Physician
Credentials M.D.
Gender Male
NPI Issued 05/09/2006

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 HECTOR SANTOS, M.D.. Source: openpaymentsdata.cms.gov.

Total received

$195

Largest payer

Eisai 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

HECTOR SANTOS, M.D. — brand share 8.0%
Specialty average (est.)

8% brand-name claims vs 92% generic, on 6,175 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.

6,175
Total Claims
$1.2M
Total Drug Cost
1,116
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
9,316
Total Day Supply
277,830
Brand vs Generic
8% brand / 92% generic
Brand Drug Cost
$904K
Generic Drug Cost
$313K

Patient Demographics

Average Patient Age
77.2 years
Avg HCC Risk Score
1.97
Gender Split
64% female / 36% male
Age Distribution
<65: 80, 65-74: 313, 75-84: 473, 85+: 250

Top Prescribed Drugs (Medicare Part D)

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

What HECTOR SANTOS, 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
Donepezil Hcl
1,183
Memantine Hcl Er
Memantine Hcl
835
Memantine Hcl
681
Carbidopa-Levodopa
Carbidopa/Levodopa
406
Rivastigmine
395
Gabapentin
231
Pramipexole Dihydrochloride
Pramipexole Di-Hcl
220
Carbidopa-Levodopa Er
Carbidopa/Levodopa
197
Levetiracetam
165

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

Internal Medicine Physician Overview

How HECTOR SANTOS, M.D. fits within the Internal Medicine Physician landscape nationally.

172,858
Internal Medicine Physician Providers in US
56
States with Internal Medicine Physician
2,716
Avg Claims per Provider

HECTOR SANTOS, M.D.'s 6,175 claims are above the specialty average of 2,716.

Nearby 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 SANTOS.

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

Frequently Asked Questions

What is HECTOR SANTOS, M.D.'s specialty?
HECTOR SANTOS, M.D. specializes in Internal Medicine Physician and practices in CAROLINA, Puerto Rico. Credentials: M.D..
How much does HECTOR SANTOS, M.D. prescribe under Medicare Part D?
In 2023, HECTOR SANTOS, M.D. wrote 6,175 Medicare Part D claims totaling $1.2M in drug costs for 1,116 beneficiaries.
Where is HECTOR SANTOS, M.D. located?
HECTOR SANTOS, M.D. is located at ESCORIAL BUILDING ONE 1400 AVENUE SUR SUITE160, CAROLINA, PR, 00987. Phone: (787) 257-1511.
What is HECTOR SANTOS, M.D.'s NPI number?
HECTOR SANTOS, M.D.'s National Provider Identifier (NPI) is 1104875848, issued on 05/09/2006.
Does HECTOR SANTOS, M.D. prescribe more brand-name or generic drugs?
HECTOR SANTOS, M.D.'s prescribing is 8% brand-name and 92% generic drugs by claim count, with $904K in brand drug costs.
How many Internal Medicine Physician providers are there in the US?
There are 172,858 Internal Medicine Physician providers across 56 states in the US. The average Internal Medicine Physician provider writes 2,716 Medicare Part D claims per year.
What drugs does HECTOR SANTOS, M.D. prescribe most often?
Based on 2023 Medicare Part D data, HECTOR SANTOS, M.D.'s most frequently prescribed drugs include Donepezil Hcl, Memantine Hcl Er, Memantine Hcl. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does HECTOR SANTOS, M.D. accept Medicare?
HECTOR SANTOS, M.D. appears in CMS Medicare data with 6,175 Part D claims and 1,116 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify HECTOR SANTOS, M.D.'s credentials?
HECTOR SANTOS, M.D.'s NPI is 1104875848 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