NPI registry status
Active
2026 NPPES data Occupational Medicine Physician NPI 1649449364 MD
Verify on CMS → Maritza Holder, MD
Occupational Medicine Physician in Wethersfield, Connecticut.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 2,230 in Occupational Medicine 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
92
Medicare Part D claims · 44 beneficiaries · Occupational Medicine Physician avg: 605
Generic prescribing
62%
generic claims · 38% 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
Maritza Holder, MD filed 92 Medicare Part D claims in 2023 as a Occupational Medicine Physician in Wethersfield, Connecticut, prescribing 62% generic.
- 92
- Part D claims, 2023
- 62%
- 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.
Maritza Holder, MD's Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
92 0th percentile higher than 0% 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
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Board-eligible specialty (heuristic, not verified)
Maritza Holder, MD 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 Maritza Holder, MD?
Quality data not reportedPrimary specialty
Occupational Medicine Physician
Medicare Part D claims
92 85% vs specialty avg
Specialty distribution in Connecticut
How Occupational Medicine Physician compares to other specialties among Connecticut 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 Occupational Medicine 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).
Maritza Holder, MD appears in the CMS NPPES registry as a Occupational Medicine Physician provider holding MD credentials at 1260 SILAS DEANE HWY, Wethersfield, CT, 06109, with a listed phone of (860) 571-7253. NPI 1649449364 was issued on 02/27/2008.
Medicare Part D records for calendar year 2023 show 92 prescription claims written by this provider, covering 44 Medicare beneficiaries and totaling roughly $6K in drug spend, split 38% brand-name and 62% generic by claim count.
Occupational Medicine Physician is a narrow specialty nationwide, with 2,230 enrolled providers across 52 states and an average of 605 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 | 1649449364 |
|---|---|
| Specialty | Occupational Medicine Physician |
| Credentials | MD |
| Gender | Female |
| NPI Issued | 02/27/2008 |
Brand vs generic prescribing mix · Above average
Maritza Holder, MD - brand share 38.0%
Occupational Medicine Physician average
38% brand-name claims vs 62% generic, on 92 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.
92
Total Claims
$6K
Total Drug Cost
44
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 94
- Total Day Supply
- 953
- Brand vs Generic
- 38% brand / 62% generic
- Brand Drug Cost
- $4K
- Generic Drug Cost
- $2K
- Antibiotic Claims
- 41
Patient Demographics
- Average Patient Age
- 72.1 years
- Avg HCC Risk Score
- 0.82
- Gender Split
- 59% female / 41% male
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
| Drug | Claims |
|---|---|
| Azithromycin | 41 |
| Atovaquone-Proguanil Hcl Atovaquone/Proguanil Hcl | 28 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Occupational Medicine Physician Overview
How Maritza Holder, MD fits within the Occupational Medicine Physician landscape nationally.
2,230
Occupational Medicine Physician Providers in US
52
States with Occupational Medicine Physician
605
Avg Claims per Provider
Maritza Holder, MD's 92 claims are below the specialty average of 605.
Nearby Occupational Medicine Physician Providers in Connecticut
Other clinicians with the same primary specialty enrolled in Connecticut, drawn from the same CMS NPPES roster as Holder.
Dr. Paul Acampora
M.D.
Wallingford, CT
Dr. Linganatha Adisesh
MD
Farmington, CT
Dr. Peter Amato
MD
New Haven, CT
Dr. Monica Bello
FNP-BC
Norwalk, CT
Sandra Bertaccini
Waterbury, CT
Compare Occupational Medicine Physician 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 Connecticut medical board, federal registration is not a license check. Credential verification guide
- Weigh a second option: compare this provider with a nearby Occupational Medicine Physician 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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Medical Specialties Explained
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Understanding Medicare Claims Data
What prescribing data reveals about a provider
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How insurance networks affect your costs
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Explore Connecticut
Frequently Asked Questions
What is Maritza Holder, MD's specialty? ▼
Maritza Holder, MD specializes in Occupational Medicine Physician and practices in Wethersfield, Connecticut. Credentials: MD.
How much does Maritza Holder, MD prescribe under Medicare Part D? ▼
In 2023, Maritza Holder, MD wrote 92 Medicare Part D claims totaling $6K in drug costs for 44 beneficiaries.
Where is Maritza Holder, MD located? ▼
Maritza Holder, MD is located at 1260 SILAS DEANE HWY, Wethersfield, CT, 06109. Phone: (860) 571-7253.
What is Maritza Holder, MD's NPI number? ▼
Maritza Holder, MD's National Provider Identifier (NPI) is 1649449364, issued on 02/27/2008.
Does Maritza Holder, MD prescribe more brand-name or generic drugs? ▼
Maritza Holder, MD's prescribing is 38% brand-name and 62% generic drugs by claim count, with $4K in brand drug costs.
How many Occupational Medicine Physician providers are there in the US? ▼
There are 2,230 Occupational Medicine Physician providers across 52 states in the US. The average Occupational Medicine Physician provider writes 605 Medicare Part D claims per year.
What drugs does Maritza Holder, MD prescribe most often? ▼
Based on 2023 Medicare Part D data, Maritza Holder, MD's most frequently prescribed drugs include Azithromycin, Atovaquone-Proguanil Hcl. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Maritza Holder, MD accept Medicare? ▼
Maritza Holder, MD appears in CMS Medicare data with 92 Part D claims and 44 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Maritza Holder, MD's credentials? ▼
Maritza Holder, MD's NPI is 1649449364 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.