2026 NPPES data Physical Medicine & Rehabilitation Physician NPI 1003255431 M.D.
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JUAN PEREZ-SANTIAGO, M.D.

Physical Medicine & Rehabilitation Physician in BAYAMON, 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
378
Medicare Part D claims · 188 beneficiaries · Physical Medicine & Rehabilitation Physician avg: 781

What the federal data shows

JUAN PEREZ-SANTIAGO, M.D. filed 378 Medicare Part D claims in 2023 as a Physical Medicine & Rehabilitation Physician in BAYAMON, Puerto Rico.

378
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.

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

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

378 Top 43% higher than 57% of 1,370,886 prescribers

0–200: 670,926 prescribers (49%). Below this entry. 200–400: 182,923 prescribers (13%). This entry sits in this band. 400–600: 90,619 prescribers (7%). Above this entry. 600–800: 56,224 prescribers (4%). Above this entry. 800–1,000: 40,919 prescribers (3%). Above this entry. 1,000–1,200: 31,827 prescribers (2%). Above this entry. 1,200–1,400: 26,224 prescribers (2%). Above this entry. 1,400–1,600: 21,710 prescribers (2%). Above this entry. 1,600–1,800: 19,072 prescribers (1%). Above this entry. 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)

JUAN PEREZ-SANTIAGO, 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 JUAN PEREZ-SANTIAGO, M.D.?

Quality data not reported

NPI registry status

Active

Issued 06/19/2013

NPI 1003255431

Primary specialty

Physical Medicine & Rehabilitation Physician

Mid-sized

15,306 US NPIs in this specialty

Medicare Part D claims

378 52% vs specialty avg

2023 prescription claims

Specialty avg: 781

Specialty distribution in Puerto Rico

How Physical Medicine & Rehabilitation Physician compares to other specialties among Puerto Rico providers

Puerto Rico providers

Physical Medicine & Rehabilitation Physician share within Puerto Rico

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

Specialty board-certification context

Estimated specialty board-certified rate — Physical Medicine & Rehabilitation Physician (ABMS / AOA reference)

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

Est. board-certified rate (Physical Medicine & Rehabilitation Physician) — ABMS / AOA estimate

0%100%78%
Est. board-certified rate (Physical Medicine & Rehabilitation 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).

JUAN PEREZ-SANTIAGO, M.D. appears in the CMS NPPES registry as a Physical Medicine & Rehabilitation Physician provider holding M.D. credentials at INSTITUTO SAN PABLO, BAYAMON, PR, 00961, with a listed phone of (787) 740-2270. NPI 1003255431 was issued on 06/19/2013. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what PEREZ-SANTIAGO 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 378 prescription claims written by this provider, covering 188 Medicare beneficiaries and totaling roughly $6K 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.

Physical Medicine & Rehabilitation Physician is a mid-sized specialty nationwide, with 15,306 enrolled providers across 54 states and an average of 781 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

INSTITUTO SAN PABLO
BAYAMON, PR 00961

Provider Details

NPI 1003255431
Specialty Physical Medicine & Rehabilitation Physician
Credentials M.D.
Gender Male
NPI Issued 06/19/2013

Medicare Part D Prescribing Data

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

378
Total Claims
$6K
Total Drug Cost
188
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
416
Total Day Supply
10,456
Generic Drug Cost
$3K

Patient Demographics

Average Patient Age
71.1 years
Avg HCC Risk Score
1.55
Gender Split
70% female / 30% male

Top Prescribed Drugs (Medicare Part D)

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

What JUAN PEREZ-SANTIAGO, 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
Meloxicam
153
Tizanidine Hcl
93
Gabapentin
69

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

Physical Medicine & Rehabilitation Physician Overview

How JUAN PEREZ-SANTIAGO, M.D. fits within the Physical Medicine & Rehabilitation Physician landscape nationally.

15,306
Physical Medicine & Rehabilitation Physician Providers in US
54
States with Physical Medicine & Rehabilitation Physician
781
Avg Claims per Provider

JUAN PEREZ-SANTIAGO, M.D.'s 378 claims are below the specialty average of 781.

Nearby Physical Medicine & Rehabilitation Physician Providers in Puerto Rico

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

Compare Physical Medicine & Rehabilitation Physician nationally: see state-by-state distribution →

Frequently Asked Questions

What is JUAN PEREZ-SANTIAGO, M.D.'s specialty?
JUAN PEREZ-SANTIAGO, M.D. specializes in Physical Medicine & Rehabilitation Physician and practices in BAYAMON, Puerto Rico. Credentials: M.D..
How much does JUAN PEREZ-SANTIAGO, M.D. prescribe under Medicare Part D?
In 2023, JUAN PEREZ-SANTIAGO, M.D. wrote 378 Medicare Part D claims totaling $6K in drug costs for 188 beneficiaries.
Where is JUAN PEREZ-SANTIAGO, M.D. located?
JUAN PEREZ-SANTIAGO, M.D. is located at INSTITUTO SAN PABLO, BAYAMON, PR, 00961. Phone: (787) 740-2270.
What is JUAN PEREZ-SANTIAGO, M.D.'s NPI number?
JUAN PEREZ-SANTIAGO, M.D.'s National Provider Identifier (NPI) is 1003255431, issued on 06/19/2013.
How many Physical Medicine & Rehabilitation Physician providers are there in the US?
There are 15,306 Physical Medicine & Rehabilitation Physician providers across 54 states in the US. The average Physical Medicine & Rehabilitation Physician provider writes 781 Medicare Part D claims per year.
What drugs does JUAN PEREZ-SANTIAGO, M.D. prescribe most often?
Based on 2023 Medicare Part D data, JUAN PEREZ-SANTIAGO, M.D.'s most frequently prescribed drugs include Meloxicam, Tizanidine Hcl, Gabapentin. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does JUAN PEREZ-SANTIAGO, M.D. accept Medicare?
JUAN PEREZ-SANTIAGO, M.D. appears in CMS Medicare data with 378 Part D claims and 188 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify JUAN PEREZ-SANTIAGO, M.D.'s credentials?
JUAN PEREZ-SANTIAGO, M.D.'s NPI is 1003255431 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