NPI registry status
Active
2026 NPPES data General Practice Physician NPI 1639388481 M.D.
Verify on CMS → Antonio Castillo, M.D.
General Practice Physician in Davenport, Florida.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 16,838 in General Practice Physician, 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
4K
Medicare Part D claims · 150 beneficiaries · General Practice Physician avg: 3K
Generic prescribing
95%
generic claims · 5% brand-name · higher generic rates reduce patient out-of-pocket costs
Industry payments
$176.31
5 payments · CMS Open Payments (Sunshine Act)
Source: CMS Medicare Part D Prescriber Public Use File, 2024
What the federal data shows
Antonio Castillo, M.D. filed 3,751 Medicare Part D claims in 2024 as a General Practice Physician in Davenport, Florida, prescribing 95% generic.
- 4K
- Part D claims, 2024
- 95%
- generic prescribing
- $176.31
- industry payments (Sunshine Act)
- ≥91st
- pct by Part D claim volume (lower-bound band)
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.
Federal trust snapshot
What official records show about Antonio Castillo, M.D.
Federal records show an active NPI with Medicare Part D prescribing activity — verifiable registry data, not a proprietary rating.
- Verified
NPI registry status
Active listing in the CMS National Provider Identifier Registry (NPI 1639388481), first enumerated 05/21/2007.
Source: CMS NPPES
- Reported
Medicare Part D participation
Filed 3,751 Medicare Part D prescription claims in the 2023 CMS public use file — indicates active Medicare prescribing participation.
Source: CMS Part D Prescriber PUF
- Reported
Board certification signal
Practices in an ABMS-board-eligible specialty; board certification not confirmed in federal records.
- Reported
Industry payment transparency
$176.31 in reported industry payments (5 transfers) in 2024 under the federal Sunshine Act — disclosed transfers of value, not a quality rating.
Source: CMS Open Payments
- State context
State board disciplinary context
Florida statewide board action statistics are published annually — these figures describe aggregate state activity, not Antonio Castillo, M.D.'s individual license status. Verify directly with the state medical board.
Source: FLDOH annual report 2023
- Not in federal data
Individual sanction lookup
PlainDoctor does not publish per-provider disciplinary determinations. Confirm current license and any individual actions through the state medical board or FSMB verification service.
Source: State medical board / FSMB
This trust snapshot summarizes only what appears in federal CMS/NPPES public records. It is not a composite score, star rating, patient review, or clinical recommendation. PlainDoctor never fabricates reviews or AggregateRating schema.
CMS NPPES provider registry desk
NPI 1639388481 · General Practice Physician
NPI-10 · ENUM-MID · TAX-MID · RX-MID · BOOK-LIGHT · PHOTO-ENUM
- NPI-10 1639388481
- ENUM-MID 2007
- TAX-MID 17K General Practice
- RX-MID 3,751
- BOOK-LIGHT 2,227 in Florida
- PHOTO-ENUM Suzanne Colletta, RN · 2007
Antonio Castillo, M.D.'s Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2024, across all CMS prescribers nationally
3,751 ≥ 91st percentile 91% of 1,416,883 prescribers are in lower value bands
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.
The percentile is a conservative 100-claim band: it counts only prescribers in lower claim-volume bands. Medicare Part D claim volume is activity context, not a quality measure or recommendation. See methodology § corpus placement.
Source CMS Medicare Part D Prescriber Public Use File · 2024
◑
Board-eligible specialty (heuristic, not verified)
Antonio Castillo, 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 Antonio Castillo, M.D.?
Quality data not reportedPrimary specialty
General Practice Physician
Medicare Part D claims
3,751 27% vs specialty avg
Specialty distribution in Florida
How General Practice Physician compares to other specialties among Florida 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 General Practice Physician. 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).
Practice Address
Provider Details
| NPI | 1639388481 |
|---|---|
| Specialty | General Practice Physician |
| Credentials | M.D. |
| Gender | Male |
| NPI Issued | 05/21/2007 |
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 Antonio Castillo, M.D.. Source: openpaymentsdata.cms.gov.
Total received
$176
Largest payer
SPR Therapeutics, 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.
License & disciplinary context - Florida FLDOH 2023 annual report
Aggregate state board data only, NOT a determination of any individual provider's status. The figures below describe statewide disciplinary activity across all ~75K Florida medical licensees in 2023 - they are NOT specific to Antonio Castillo, M.D.. To verify Antonio Castillo, M.D.'s current license status, search the FLDOH public license lookup directly, or check the Federation of State Medical Boards (FSMB) verification service.
480
Total board actions, Florida 2023
Across 467 cases
6.40
Actions per 1,000 licensees
Florida statewide rate
monetary fine
Most common action type
138 cases
FLDOH publishes annual disciplinary statistics as part of public-record reporting under each state's Administrative Procedure Act. See the full breakdown by action type and year on the Florida disciplinary trends page. Cross-checked against FSMB U.S. Medical Regulatory Trends.
Brand vs generic prescribing mix · Generic-heavy
Antonio Castillo, M.D. - brand share 5.0%
General Practice Physician average
5% brand-name claims vs 95% generic, on 3,751 2024 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 2024.
3,751
Total Claims
$215K
Total Drug Cost
150
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 3,772.6
- Total Day Supply
- 105,714
- Brand vs Generic
- 5% brand / 95% generic
- Brand Drug Cost
- $140K
- Generic Drug Cost
- $76K
- Opioid Claims
- 1,404 (37.4% rate)
Patient Demographics
- Average Patient Age
- 60.9 years
- Avg HCC Risk Score
- 2.04
- Gender Split
- 56% female / 44% male
- Age Distribution
- <65: 85, 65-74: 59, 75-84: N/A, 85+: N/A
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2024. Based on Medicare Part D data only.
What Antonio Castillo, M.D. prescribes most
Top Medicare Part D drugs by claim count, 2024
- Oxycodone Hcl
Oxycodone Hcl
811 claims
- Diclofenac Sodium
Diclofenac Sodium
408 claims
- Cyclobenzaprine Hcl
Cyclobenzaprine Hcl
358 claims
- Meloxicam
Meloxicam
344 claims
- Morphine Sulfate Er 249
Morphine Sulfate Er
249 claims
- Gabapentin 221
Gabapentin
221 claims
- Tizanidine Hcl 210
Tizanidine Hcl
210 claims
- Hydromorphone Hcl 113
Hydromorphone Hcl
113 claims
| Drug | Claims |
|---|---|
| Oxycodone Hcl | 811 |
| Diclofenac Sodium | 408 |
| Cyclobenzaprine Hcl | 358 |
| Meloxicam | 344 |
| Morphine Sulfate Er Morphine Sulfate | 249 |
| Gabapentin | 221 |
| Tizanidine Hcl | 210 |
| Hydromorphone Hcl | 113 |
| Ibuprofen | 111 |
| Xtampza Er Oxycodone Myristate | 93 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
General Practice Physician Overview
How Antonio Castillo, M.D. fits within the General Practice Physician landscape nationally.
16,838
General Practice Physician Providers in US
56
States with General Practice Physician
2,957
Avg Claims per Provider
Antonio Castillo, M.D.'s 3,751 claims are above the specialty average of 2,957.
Nationwide General Practice Physician peers with similar MIPS or enrollment year
Two federal-record peer sets for Castillo, both outside Florida so the neighborhoods are not geographic containment.
Same NPPES enumeration year (2007)
Same-specialty clinicians who entered the NPI registry in the same calendar year, outside this state.
Nearby General Practice Physician Providers in Florida
Other clinicians with the same primary specialty enrolled in Florida, drawn from the same CMS NPPES roster as Castillo.
One of 2,227 General Practice Physician providers enrolled in Florida, 5 are shown here.
Dr. Kerolos Abadeer
DO
Orange Park, FL
Dr. Danny Abdallah Samara
MD
Ocala, FL
Khaled Abdelghany
Brooksville, FL
Dr. Pacita Abinales
M.D.
Saint Petersburg, FL
Dr. Richard Abood
MD
Naples, FL
Compare General Practice Physician nationally: see state-by-state distribution →
Frequently Asked Questions
What is Antonio Castillo, M.D.'s specialty? ▼
Antonio Castillo, M.D. specializes in General Practice Physician and practices in Davenport, Florida. Credentials: M.D..
How much does Antonio Castillo, M.D. prescribe under Medicare Part D? ▼
In 2024, Antonio Castillo, M.D. wrote 3,751 Medicare Part D claims totaling $215K in drug costs for 150 beneficiaries.
Where is Antonio Castillo, M.D. located? ▼
Antonio Castillo, M.D. is located at 216 BOXWOOD DR, Davenport, FL, 33837. Phone: (787) 212-9163.
What is Antonio Castillo, M.D.'s NPI number? ▼
Antonio Castillo, M.D.'s National Provider Identifier (NPI) is 1639388481, issued on 05/21/2007.
Does Antonio Castillo, M.D. prescribe more brand-name or generic drugs? ▼
Antonio Castillo, M.D.'s prescribing is 5% brand-name and 95% generic drugs by claim count, with $140K in brand drug costs.
Does Antonio Castillo, M.D. prescribe opioids? ▼
Yes, Antonio Castillo, M.D. had 1,404 opioid claims in 2024 with an opioid prescribing rate of 37.4%.
How many General Practice Physician providers are there in the US? ▼
There are 16,838 General Practice Physician providers across 56 states in the US. The average General Practice Physician provider writes 2,957 Medicare Part D claims per year.
What drugs does Antonio Castillo, M.D. prescribe most often? ▼
Based on 2024 Medicare Part D data, Antonio Castillo, M.D.'s most frequently prescribed drugs include Oxycodone Hcl, Diclofenac Sodium, Cyclobenzaprine Hcl. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Antonio Castillo, M.D. accept Medicare? ▼
Antonio Castillo, M.D. appears in CMS Medicare data with 3,751 Part D claims and 150 Medicare beneficiaries in 2024. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Antonio Castillo, M.D.'s credentials? ▼
Antonio Castillo, M.D.'s NPI is 1639388481 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
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 (2024). 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 August 2026 (NPPES) / 2024 (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
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 August 2026.