NPI registry status
Active
2026 NPPES data Specialist NPI 1639144918 MD
Verify on CMS → Pablo Baez Chao, MD
Specialist in Hatillo, 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 69,658 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
367
Medicare Part D claims · 56 beneficiaries · Specialist avg: 1K
Compiled from official public sources by the PlainDoctor editorial team.
What the federal data shows
Pablo Baez Chao, MD filed 367 Medicare Part D claims in 2023 as a Specialist in Hatillo, Puerto Rico.
- 367
- 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.
Pablo Baez Chao, MD's Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
367 Top 43% higher than 57% 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 Pablo Baez Chao, MD?
Quality data not reportedPrimary specialty
Specialist
Medicare Part D claims
367 75% 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).
Pablo Baez Chao, MD appears in the CMS NPPES registry as a Specialist provider holding MD credentials at CARR 129 KM 8-5, Hatillo, PR, 00614, with a listed phone of (787) 817-0979. NPI 1639144918 was issued on 02/21/2006.
Medicare Part D records for calendar year 2023 show 367 prescription claims written by this provider, covering 56 Medicare beneficiaries and totaling roughly $5K in drug spend.
Specialist is a high-volume specialty nationwide, with 69,658 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 | 1639144918 |
|---|---|
| Specialty | Specialist |
| Credentials | MD |
| Gender | Male |
| NPI Issued | 02/21/2006 |
Medicare Part D Prescribing Data
CMS Medicare Part D prescriber-level data for calendar year 2023.
367
Total Claims
$5K
Total Drug Cost
56
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 455
- Total Day Supply
- 13,418
- Generic Drug Cost
- $4K
Patient Demographics
- Average Patient Age
- 61.3 years
- Avg HCC Risk Score
- 1.63
- Gender Split
- 54% female / 46% male
- Age Distribution
- <65: 39, 65-74: 11, 75-84: N/A, 85+: N/A
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Pablo Baez Chao, MD prescribes most
Top Medicare Part D drugs by claim count, 2023
- Cyclobenzaprine Hcl
Cyclobenzaprine Hcl
91 claims
- Gabapentin
Gabapentin
71 claims
- Diclofenac Potassium
Diclofenac Potassium
43 claims
- Naproxen 27
Naproxen
27 claims
- Nabumetone 22
Nabumetone
22 claims
- Naproxen Sodium 20
Naproxen Sodium
20 claims
- Baclofen 17
Baclofen
17 claims
- Sulindac 12
Sulindac
12 claims
| Drug | Claims |
|---|---|
| Cyclobenzaprine Hcl | 91 |
| Gabapentin | 71 |
| Diclofenac Potassium | 43 |
| Naproxen | 27 |
| Nabumetone | 22 |
| Naproxen Sodium | 20 |
| Baclofen | 17 |
| Sulindac | 12 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Specialist Overview
How Pablo Baez Chao, MD fits within the Specialist landscape nationally.
69,658
Specialist Providers in US
55
States with Specialist
1,474
Avg Claims per Provider
Pablo Baez Chao, MD's 367 claims are below 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 Baez Chao.
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
Learn more about finding, verifying, and understanding healthcare providers.
How to Find a Doctor
Step-by-step guide to choosing a provider
Verify Credentials
Check NPI, board certification & license status
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 Pablo Baez Chao, MD's specialty? ▼
Pablo Baez Chao, MD specializes in Specialist and practices in Hatillo, Puerto Rico. Credentials: MD.
How much does Pablo Baez Chao, MD prescribe under Medicare Part D? ▼
In 2023, Pablo Baez Chao, MD wrote 367 Medicare Part D claims totaling $5K in drug costs for 56 beneficiaries.
Where is Pablo Baez Chao, MD located? ▼
Pablo Baez Chao, MD is located at CARR 129 KM 8-5, Hatillo, PR, 00614. Phone: (787) 817-0979.
What is Pablo Baez Chao, MD's NPI number? ▼
Pablo Baez Chao, MD's National Provider Identifier (NPI) is 1639144918, issued on 02/21/2006.
How many Specialist providers are there in the US? ▼
There are 69,658 Specialist providers across 55 states in the US. The average Specialist provider writes 1,474 Medicare Part D claims per year.
What drugs does Pablo Baez Chao, MD prescribe most often? ▼
Based on 2023 Medicare Part D data, Pablo Baez Chao, MD's most frequently prescribed drugs include Cyclobenzaprine Hcl, Gabapentin, Diclofenac Potassium. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Pablo Baez Chao, MD accept Medicare? ▼
Pablo Baez Chao, MD appears in CMS Medicare data with 367 Part D claims and 56 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Pablo Baez Chao, MD's credentials? ▼
Pablo Baez Chao, MD's NPI is 1639144918 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.