NPI registry status
Active
2026 NPPES data Otolaryngology Physician NPI 1043205974 M.D., M.P.H.
Verify on CMS → Cathy Chong, M.D., M.P.H.
Otolaryngology Physician in Weymouth, Massachusetts.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 10,895 in Otolaryngology 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
721
Medicare Part D claims · 210 beneficiaries · Otolaryngology Physician avg: 509
Generic prescribing
96%
generic claims · 4% brand-name · higher generic rates reduce patient out-of-pocket costs
Industry payments
$34.49
2 payments · CMS Open Payments (Sunshine Act)
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
Cathy Chong, M.D., M.P.H. filed 721 Medicare Part D claims in 2023 as a Otolaryngology Physician in Weymouth, Massachusetts, prescribing 96% generic.
- 721
- Part D claims, 2023
- 96%
- generic prescribing
- Likely
- board-certified (heuristic)
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.
Cathy Chong, M.D., M.P.H.'s Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
721 Top 29% higher than 71% 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
✓
Board certification likely (heuristic, not verified)
Cathy Chong, M.D., M.P.H. practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + 1 hospital affiliation - signals consistent with board-certified status. For verified board certification, see CertificationMatters.org (the official ABMS public lookup).
What does the federal data show about Cathy Chong, M.D., M.P.H.?
Quality data not reportedPrimary specialty
Otolaryngology Physician
Medicare Part D claims
721 42% vs specialty avg
Specialty distribution in Massachusetts
How Otolaryngology Physician compares to other specialties among Massachusetts 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 Otolaryngology 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).
Cathy Chong, M.D., M.P.H. appears in the CMS NPPES registry as a Otolaryngology Physician provider holding M.D., M.P.H. credentials at 825 MAIN ST, Weymouth, MA, 02190, with a listed phone of (781) 337-3424. NPI 1043205974 was issued on 09/16/2005.
Medicare Part D records for calendar year 2023 show 721 prescription claims written by this provider, covering 210 Medicare beneficiaries and totaling roughly $24K in drug spend, split 4% brand-name and 96% generic by claim count, with an opioid prescribing rate of 3.2%.
Otolaryngology Physician is a mid-sized specialty nationwide, with 10,895 enrolled providers across 54 states and an average of 509 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 | 1043205974 |
|---|---|
| Specialty | Otolaryngology Physician |
| Credentials | M.D., M.P.H. |
| Gender | Female |
| NPI Issued | 09/16/2005 |
Hospital and facility affiliations
Facilities where Cathy Chong, M.D., M.P.H. bills Medicare from. Star ratings (1-5) are CMS Hospital Compare's "Hospital overall rating" - a composite of mortality, readmission, patient experience, safety, timely care, and efficient use of medical imaging measures. Source: CMS Care Compare.
Massachusetts Eye And Ear Associates, Inc
Duxbury, MA
Affiliations sourced from CMS Doctors and Clinicians National Downloadable File; hospital ratings from CMS Hospital General Information dataset (cross-referenced by facility name + state).
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 Cathy Chong, M.D., M.P.H.. Source: openpaymentsdata.cms.gov.
Total received
$34
Largest payer
Acera Surgical, 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 - Massachusetts BORIM 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 ~38K Massachusetts medical licensees in 2023 - they are NOT specific to Cathy Chong, M.D., M.P.H.. To verify Cathy Chong, M.D., M.P.H.'s current license status, search the BORIM public license lookup directly, or check the Federation of State Medical Boards (FSMB) verification service.
80
Total board actions, Massachusetts 2023
Across 78 cases
2.11
Actions per 1,000 licensees
Massachusetts statewide rate
probation
Most common action type
29 cases
BORIM 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 Massachusetts disciplinary trends page. Cross-checked against FSMB U.S. Medical Regulatory Trends.
Brand vs generic prescribing mix · Generic-heavy
Cathy Chong, M.D., M.P.H. - brand share 4.0%
Otolaryngology Physician average
4% brand-name claims vs 96% generic, on 721 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.
721
Total Claims
$24K
Total Drug Cost
210
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 968
- Total Day Supply
- 22,228
- Brand vs Generic
- 4% brand / 96% generic
- Brand Drug Cost
- $7K
- Generic Drug Cost
- $18K
- Opioid Claims
- 23 (3.2% rate)
- Antibiotic Claims
- 102
Patient Demographics
- Average Patient Age
- 72.0 years
- Avg HCC Risk Score
- 1.03
- Gender Split
- 65% female / 35% male
- Age Distribution
- <65: 31, 65-74: 86, 75-84: 76, 85+: 17
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Cathy Chong, M.D., M.P.H. prescribes most
Top Medicare Part D drugs by claim count, 2023
- Famotidine
Famotidine
79 claims
- Fluticasone Propio…
Fluticasone Propionate
65 claims
- Azelastine Hcl
Azelastine Hcl
50 claims
- Prednisone
Prednisone
49 claims
- Omeprazole
Omeprazole
46 claims
- Ipratropium Bromide 31
Ipratropium Bromide
31 claims
- Neomycin-Polymyxin… 31
Neomycin-Polymyxin-Hc
31 claims
- Cefdinir 22
Cefdinir
22 claims
| Drug | Claims |
|---|---|
| Famotidine | 79 |
| Fluticasone Propionate | 65 |
| Azelastine Hcl | 50 |
| Prednisone | 49 |
| Omeprazole | 46 |
| Ipratropium Bromide | 31 |
| Neomycin-Polymyxin-Hc Neomycin/Polymyxin B/Hydrocort | 31 |
| Cefdinir | 22 |
| Clonazepam | 20 |
| Mupirocin | 19 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Otolaryngology Physician Overview
How Cathy Chong, M.D., M.P.H. fits within the Otolaryngology Physician landscape nationally.
10,895
Otolaryngology Physician Providers in US
54
States with Otolaryngology Physician
509
Avg Claims per Provider
Cathy Chong, M.D., M.P.H.'s 721 claims are above the specialty average of 509.
Nearby Otolaryngology Physician Providers in Massachusetts
Other clinicians with the same primary specialty enrolled in Massachusetts, drawn from the same CMS NPPES roster as Chong.
Dr. Dunia Abdul-Aziz
MD
Boston, MA
Dr. Usama Aboelkheir
MD
Boston, MA
Dr. Nicholas Abt
MD
Mashpee, MA
Dr. Jihad Achkar
M.D.
Boston, MA
Dr. Dara Adams
MD
Boston, MA
Compare Otolaryngology 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 Massachusetts medical board, federal registration is not a license check. Credential verification guide
- Weigh a second option: compare this provider with a nearby Otolaryngology 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.
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Medical Specialties Explained
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Frequently Asked Questions
What is Cathy Chong, M.D., M.P.H.'s specialty? ▼
Cathy Chong, M.D., M.P.H. specializes in Otolaryngology Physician and practices in Weymouth, Massachusetts. Credentials: M.D., M.P.H..
How much does Cathy Chong, M.D., M.P.H. prescribe under Medicare Part D? ▼
In 2023, Cathy Chong, M.D., M.P.H. wrote 721 Medicare Part D claims totaling $24K in drug costs for 210 beneficiaries.
Where is Cathy Chong, M.D., M.P.H. located? ▼
Cathy Chong, M.D., M.P.H. is located at 825 MAIN ST, Weymouth, MA, 02190. Phone: (781) 337-3424.
What is Cathy Chong, M.D., M.P.H.'s NPI number? ▼
Cathy Chong, M.D., M.P.H.'s National Provider Identifier (NPI) is 1043205974, issued on 09/16/2005.
Does Cathy Chong, M.D., M.P.H. prescribe more brand-name or generic drugs? ▼
Cathy Chong, M.D., M.P.H.'s prescribing is 4% brand-name and 96% generic drugs by claim count, with $7K in brand drug costs.
Does Cathy Chong, M.D., M.P.H. prescribe opioids? ▼
Yes, Cathy Chong, M.D., M.P.H. had 23 opioid claims in 2023 with an opioid prescribing rate of 3.2%.
How many Otolaryngology Physician providers are there in the US? ▼
There are 10,895 Otolaryngology Physician providers across 54 states in the US. The average Otolaryngology Physician provider writes 509 Medicare Part D claims per year.
What drugs does Cathy Chong, M.D., M.P.H. prescribe most often? ▼
Based on 2023 Medicare Part D data, Cathy Chong, M.D., M.P.H.'s most frequently prescribed drugs include Famotidine, Fluticasone Propionate, Azelastine Hcl. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Cathy Chong, M.D., M.P.H. accept Medicare? ▼
Cathy Chong, M.D., M.P.H. appears in CMS Medicare data with 721 Part D claims and 210 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Cathy Chong, M.D., M.P.H.'s credentials? ▼
Cathy Chong, M.D., M.P.H.'s NPI is 1043205974 with credentials M.D., M.P.H.. 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.