NPI registry status
Active
2026 NPPES data Specialist NPI 1023057577 MD
Verify on CMS → Polly Ruiz Santiago, MD
Specialist in Barceloneta, Puerto Rico.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 69,608 in Specialist, and covers specialty classification, practice address, and Medicare Part D prescribing data when reported. According to CMS, every field reflects the provider's official federal registration, see our methodology.
Federal data, no proprietary rating.
We show these CMS records as-is - no composite score, no star rating, no editorial opinion layered on top.
Prescribing volume
11K
Medicare Part D claims · 303 beneficiaries · Specialist avg: 1K
Generic prescribing
95%
generic claims · 4% brand-name · higher generic rates reduce patient out-of-pocket costs
Source: CMS Medicare Part D Prescriber Public Use File, 2023
Compiled from official public sources by the PlainDoctor editorial team.
What the federal data shows
Polly Ruiz Santiago, MD filed 11,329 Medicare Part D claims in 2023 as a Specialist in Barceloneta, Puerto Rico, prescribing 95% generic.
- 11K
- Part D claims, 2023
- 95%
- 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.
Polly Ruiz Santiago, MD's Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
11,329 Top 2% higher than 98% of 1,370,886 prescribers
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
What does the federal data show about Polly Ruiz Santiago, MD?
Quality data not reportedPrimary specialty
Specialist
Medicare Part D claims
11,329 8× vs specialty avg
Specialty distribution in Puerto Rico
How Specialist compares to other specialties among Puerto Rico providers
Board certification
Not published by CMS
CMS does not publish a per-provider board-certification field in NPPES. PlainDoctor does not have a reliable per-specialty certification rate to show for Specialist. Verify directly:
How MIPS and board certification work
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).
Polly Ruiz Santiago, MD appears in the CMS NPPES registry as a Specialist provider holding MD credentials at 20 URB CATALANA, Barceloneta, PR, 00617, with a listed phone of (787) 846-5553. NPI 1023057577 was issued on 06/06/2006.
Medicare Part D records for calendar year 2023 show 11,329 prescription claims written by this provider, covering 303 Medicare beneficiaries and totaling roughly $256K in drug spend, split 4% brand-name and 95% generic by claim count, with an opioid prescribing rate of 0.4%.
Specialist is a high-volume specialty nationwide, with 69,608 enrolled providers across 55 states and an average of 1,474 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
Provider Details
| NPI | 1023057577 |
|---|---|
| Specialty | Specialist |
| Credentials | MD |
| Gender | Male |
| NPI Issued | 06/06/2006 |
Brand vs generic prescribing mix · Generic-heavy
Polly Ruiz Santiago, MD - brand share 4.0%
Specialist average
4% brand-name claims vs 95% generic, on 11,329 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.
11,329
Total Claims
$256K
Total Drug Cost
303
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 15,413
- Total Day Supply
- 451,313
- Brand vs Generic
- 4% brand / 95% generic
- Brand Drug Cost
- $125K
- Generic Drug Cost
- $128K
- Opioid Claims
- 46 (0.4% rate)
- Antibiotic Claims
- 67
Patient Demographics
- Average Patient Age
- 62.7 years
- Avg HCC Risk Score
- 2.95
- Gender Split
- 36% female / 64% male
- Age Distribution
- <65: 177, 65-74: 78, 75-84: 37, 85+: 11
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Polly Ruiz Santiago, MD prescribes most
Top Medicare Part D drugs by claim count, 2023
- Omeprazole
Omeprazole
895 claims
- Clonazepam
Clonazepam
856 claims
- Fluoxetine Hcl
Fluoxetine Hcl
750 claims
- Temazepam
Temazepam
565 claims
- Gabapentin
Gabapentin
481 claims
- Simvastatin
Simvastatin
433 claims
- Lorazepam
Lorazepam
374 claims
- Sertraline Hcl
Sertraline Hcl
370 claims
| Drug | Claims |
|---|---|
| Omeprazole | 895 |
| Clonazepam | 856 |
| Fluoxetine Hcl | 750 |
| Temazepam | 565 |
| Gabapentin | 481 |
| Simvastatin | 433 |
| Lorazepam | 374 |
| Sertraline Hcl | 370 |
| Quetiapine Fumarate | 295 |
| Zolpidem Tartrate | 280 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Specialist Overview
How Polly Ruiz Santiago, MD fits within the Specialist landscape nationally.
69,608
Specialist Providers in US
55
States with Specialist
1,474
Avg Claims per Provider
Polly Ruiz Santiago, MD's 11,329 claims are above the specialty average of 1,474.
Nearby Specialist Providers in Puerto Rico
Other clinicians with the same primary specialty enrolled in Puerto Rico, drawn from the same CMS NPPES roster as Ruiz Santiago.
Dr. Alberto Abreu
M.D.
Ponce, PR
Dr. Arlene Abreu Rivera
MD
Caguas, PR
Dr. Alberto Abreu-Rivera
M.D. FAMILY PHYSICIA
Arecibo, PR
Dr. Carmen Acantilado
M.D.
Bayamon, PR
Dr. Frank Acevedo
M.D.
Cayey, PR
Compare Specialist nationally: see state-by-state distribution →
Before you book an appointment
Use this federal record as your verification checklist, not as a recommendation.
- Confirm the NPI record is current in the official CMS registry, providers update their own NPPES details, and moves can lag. Verify this NPI
- Check the active license and any disciplinary history with the Puerto Rico medical board, federal registration is not a license check. Credential verification guide
- Weigh a second option: compare this provider with a nearby Specialist peer on Medicare volume and prescribing patterns. Compare providers
Medicare Part D and MIPS figures describe practice patterns in federal programs only, they are not quality ratings, and PlainDoctor does not rate, rank, or recommend providers.
Healthcare Guides
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How to Find a Doctor
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Medical Specialties Explained
Who treats what and how specialties differ
Understanding Medicare Claims Data
What prescribing data reveals about a provider
In-Network vs Out-of-Network
How insurance networks affect your costs
Telehealth Guide
Virtual care options and coverage in 2026
Explore Puerto Rico
Frequently Asked Questions
What is Polly Ruiz Santiago, MD's specialty? ▼
Polly Ruiz Santiago, MD specializes in Specialist and practices in Barceloneta, Puerto Rico. Credentials: MD.
How much does Polly Ruiz Santiago, MD prescribe under Medicare Part D? ▼
In 2023, Polly Ruiz Santiago, MD wrote 11,329 Medicare Part D claims totaling $256K in drug costs for 303 beneficiaries.
Where is Polly Ruiz Santiago, MD located? ▼
Polly Ruiz Santiago, MD is located at 20 URB CATALANA, Barceloneta, PR, 00617. Phone: (787) 846-5553.
What is Polly Ruiz Santiago, MD's NPI number? ▼
Polly Ruiz Santiago, MD's National Provider Identifier (NPI) is 1023057577, issued on 06/06/2006.
Does Polly Ruiz Santiago, MD prescribe more brand-name or generic drugs? ▼
Polly Ruiz Santiago, MD's prescribing is 4% brand-name and 95% generic drugs by claim count, with $125K in brand drug costs.
Does Polly Ruiz Santiago, MD prescribe opioids? ▼
Yes, Polly Ruiz Santiago, MD had 46 opioid claims in 2023 with an opioid prescribing rate of 0.4%.
How many Specialist providers are there in the US? ▼
There are 69,608 Specialist providers across 55 states in the US. The average Specialist provider writes 1,474 Medicare Part D claims per year.
What drugs does Polly Ruiz Santiago, MD prescribe most often? ▼
Based on 2023 Medicare Part D data, Polly Ruiz Santiago, MD's most frequently prescribed drugs include Omeprazole, Clonazepam, Fluoxetine Hcl. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Polly Ruiz Santiago, MD accept Medicare? ▼
Polly Ruiz Santiago, MD appears in CMS Medicare data with 11,329 Part D claims and 303 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Polly Ruiz Santiago, MD's credentials? ▼
Polly Ruiz Santiago, MD's NPI is 1023057577 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
View source datasets and methodology notes
- 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
Compiled from official public sources by the PlainDoctor editorial team.
Every figure on PlainDoctor is rendered directly from the federal CMS NPPES registry, Medicare Part D, MIPS, and Open Payments records, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of May 2026.