Dr. Melissa Volpe Merwin , DMD
Dentist - General Practice • Guilford, CT
800 Boston Post Rd Ste 204
Guilford, CT 064372770
This profile restates public CMS/NPPES data; T-MedInfo gives no medical advice — consult a licensed professional, and call 911 for emergencies.
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Dr. Melissa Merwin is listed in NPPES under Dentist - General Practice.
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NPI assigned on February 17, 2019; this date does not establish years in practice.
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Published CMS data list 25 Medicare Part D prescriptions, including refills, in 2024.
Source: CMS, Medicare Part D Prescribers – by Provider and Drug, 2024. Published rows only; this is not a quality measure.
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Published Part D records, 2024:
- Sodium Fluoride (Fluoride (Sodium)) — 14 prescription fills, including refills.
- Amoxicillin — 11 prescription fills, including refills.
Source: CMS, Medicare Part D Prescribers – by Provider and Drug, 2024. Drug names come from pharmacy claims. Listing a drug here is not an endorsement or a recommendation.
See the full table · Guide: How to read Medicare Part D prescriber data
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Fewer Part D prescriptions than 70% of clinicians listed under Dentist - General Practice in Connecticut (2024, 878 clinicians with data). Median for this group: 47. Middle half: 25 to 88.
Source: CMS, Medicare Part D Prescribers – by Provider and Drug, 2024. Billing and prescribing volume is not a quality rating.
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Medicare Part D prescriptions went from 13 in 2021 to 25 in 2024.
Source: CMS, Medicare Part D Prescribers – by Provider and Drug, 2021–2024.
Practice Location & Contact Primary Location
800 Boston Post Rd Ste 204
Guilford, CT 064372770
Matched by practice address or phone in NPPES. A shared address or phone does not confirm that this clinician works there.
What Public CMS Data Show
Dentist - General Practice: NPPES taxonomy is a reported classification, not proof of board certification.
30-day fills
28 standardized 30-day fills in 2024
CMS converts prescriptions to 30-day supplies so they can be compared. A 90-day prescription counts as about three 30-day fills.
What this does not show: 30-day fills
It is not a count of patients and not a measure of quality.
Part D drug cost
$114 in 2024
The total cost of these prescriptions in 2024, paid by Medicare drug plans, patients and other payers together.
It shows the total spending on drugs this clinician prescribed, not what any one patient paid.
What this does not show: Part D drug cost
A higher cost often reflects the type of medicines a specialty uses. It is not your out-of-pocket cost and not a measure of quality.
Source: CMS, Medicare Part D Prescribers – by Provider and Drug, 2024.
Open Payments general payments, program year 2025
All general payments: $493.00 across 5 records.
By nature of payment
- Travel and Lodging: $468.00 across 4 records.
- Education: $25.00 across 1 record.
Reporting-company totals
- ZIMVIE INC.: $468.00 across 4 records.
- Align Technology, Inc.: $25.00 across 1 record.
A reported payment does not necessarily mean the financial relationship is improper and is not a measure of care quality. Clinicians can review and dispute these records.
Source: Calculated by T-MedInfo from CMS Open Payments general-payment records for program year 2025 (published June 30, 2026).
NPI first issued
2019
The year this clinician's National Provider Identifier (NPI) was issued. An NPI is a unique 10-digit ID that US health care providers use for billing.
What this does not show: NPI first issued
NPIs have been issued only since 2005, so this year is not necessarily when the clinician started practicing.
Source: CMS NPPES NPI Registry.
Medicare assignment not listed
CMS data do not show whether this clinician accepts Medicare assignment. This does not mean they do not accept Medicare. Ask the office.
Medicare assignment applies to Original Medicare. It does not tell you whether the clinician is in a Medicare Advantage plan's network, accepts other insurance, or is taking new patients.
Source: CMS Doctors and Clinicians, CMS release of October 2, 2026; Medicare.gov, “Does your provider accept Medicare as full payment?”
No telehealth indicator
CMS shows this indicator only when recent Medicare claims include telehealth services. The clinician may still offer telehealth; ask the office.
Source: CMS, Telehealth Indicator on Medicare Care Compare (fact sheet, January 2023); CMS Doctors and Clinicians, CMS release of October 2, 2026.
Enrolled in Medicare (PECOS)
Dr. Merwin has a Medicare enrollment record in PECOS, the CMS system clinicians use to enroll so they can bill Medicare or order services for people with Medicare.
It does not show whether the clinician accepts assignment, is in your plan's network, or is taking new patients.
Source: CMS Medicare Fee-For-Service Public Provider Enrollment (PECOS); CMS Order and Referring file.
Can order Medicare-covered services
CMS lists Dr. Merwin as eligible to order or refer Medicare Part B clinical laboratory and imaging services and durable medical equipment (DME) for people with Medicare.
Medicare pays for these items and services only when they are ordered by an eligible clinician.
What this does not show: Can order Medicare-covered services
It does not mean the clinician offers these services directly.
Source: CMS Medicare Fee-For-Service Public Provider Enrollment (PECOS); CMS Order and Referring file.
Compared with the same specialty in Guilford and Connecticut
Billing and prescribing volume is not a quality rating.
Medicare Part D prescriptions
Fewer Part D prescriptions than 70% of clinicians listed under Dentist - General Practice in Connecticut (2024, 878 clinicians with data). Median for this group: 47. Middle half: 25 to 88.
Too few clinicians listed under Dentist - General Practice in Guilford have Medicare Part D data for 2024 to compare.
Part D drug cost
Close to the middle for clinicians listed under Dentist - General Practice in Connecticut (2024, 878 clinicians with data). Median for this group: $141. Middle half: $59 to $321.
Too few clinicians listed under Dentist - General Practice in Guilford have Medicare Part D data for 2024 to compare.
8 active clinicians are listed under Dentist - General Practice with a practice address in Guilford, CT (1,739 in Connecticut).
Addresses are self-reported to NPPES and may be out of date.
CMS data by year
Changes may reflect reporting, coverage or privacy limits, not changes in care quality.
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Medicare Part D prescriptions
Medicare Part D prescriptions went from 13 in 2021 to 25 in 2024.
- 2021: 13
- 2022: 26
- 2024: 25
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30-day fills
30-day fills went from 15 in 2021 to 28 in 2024.
- 2021: 15
- 2022: 26
- 2024: 28
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Part D drug cost
Part D drug cost went from $87 in 2021 to $114 in 2024.
- 2021: $87
- 2022: $200
- 2024: $114
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Industry payments (Open Payments)
Industry payments (Open Payments) went from $77.08 in 2021 to $493.00 in 2025.
- 2021: $77.08
- 2022: $81.79
- 2023: $423.65
- 2024: $142.03
- 2025: $493.00
Sources: CMS Medicare Part D Prescribers (2024), CMS Open Payments (2025), CMS Doctors and Clinicians, CMS release of October 2, 2026, CMS NPPES NPI Registry. Specialty names follow the NUCC Health Care Provider Taxonomy.
Text: T-MedInfo · Report an error.
Pharma & Medical Device Financial Disclosures
Payments and other transfers of value that drug and medical device companies reported to CMS Open Payments
Program year 2025 (payments made January 1 – December 31, 2025): fewer than 11 records totaling $493.00.
| Manufacturer | Payment Nature | Product | Type | Amount ($) |
|---|---|---|---|---|
| ZIMVIE INC. |
Travel and Lodging
In-kind items and services
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TAPERED SCREW-VENT | General | $286.00 |
| ZIMVIE INC. |
Travel and Lodging
In-kind items and services
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TAPERED SCREW-VENT | General | $114.00 |
| ZIMVIE INC. |
Travel and Lodging
In-kind items and services
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TAPERED SCREW-VENT | General | $34.00 |
| ZIMVIE INC. |
Travel and Lodging
In-kind items and services
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TAPERED SCREW-VENT | General | $34.00 |
| Align Technology, Inc. |
Education
Cash or cash equivalent
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Invisalign | General | $25.00 |
Source: CMS Open Payments, program year 2025, released June 30, 2026.
Medicare Part D Prescribing Profile & Medications
Medicare Part D prescriptions filled, including refills, in 2024.
| Brand Name | Generic Name | Prescriptions | Day Supply | Total Cost | Patients |
|---|---|---|---|---|---|
| Sodium Fluoride | Fluoride (Sodium) | 14 | 520 | $84.93 | — |
| Amoxicillin | Amoxicillin | 11 | 64 | $28.58 | — |
Source: CMS Part D by Provider and Drug, 2024; rows below 11 claims omitted by CMS; volume isn’t quality. Privacy limits
Specialties & License Numbers Reported to NPPES
Self-certified to NPPES: 2022-12-28NUCC Taxonomy Code: 1223G0001X
A general dentist is the primary dental care provider for patients of all ages. The general dentist is responsible for the diagnosis, treatment, management and overall coordination of services related to patients' oral health needs.
Medicare (PECOS) Enrollment & Ordering Eligibility
Source: CMS PECOSORDER AND REFERRING ONLY - OTHER (NON-PHYSICIAN)
I20191024001937
NY
8820320864
Sources: CMS Provider Enrollment and Order and Referring. Medicare enrollment is a billing status, not an accreditation or quality rating.
Clinicians Sharing This Practice Address or Phone
Clinicians sharing this NPPES address, phone or fax; a shared contact does not mean they work together.
Dentist
Doctor of Dental Medicine
Career & Practice History Timeline
Changes recorded in monthly NPPES data files: addresses, names, credentials, specialties and NPI status
Registered at 800 BOSTON POST RD STE 204, GUILFORD, CT 064372770 (Tel: 2032457575)
Registered at 21 WASHINGTON AVE, NORTH HAVEN, CT 064732368 (Tel: 2032392356)
Registered at 37 GRANDVIEW TER, NORTH HAVEN, CT 064732043 (Tel: 2035356167)
Dentist (license number reported to NPPES: CT 12841)
NPI status registered as active in NPPES database
Registered at 1824 MADISON AVE, NEW YORK, NY 100353832 (Tel: 2124234500)
Registered at 1824 MADISON AVE, NEW YORK, NY 100353832 (Tel: 2124234500)
Recorded as MELISSA MERWIN, DMD
Student in an Organized Health Care Education/Training Program
First registered as active Individual Practitioner in NPPES Database.
NPI Administrative Meta
Other Dentist - General Practices in Guilford
- Dr. Pamela Brown, DDS
- Dr. Michael Merlini, DDS
- Dr. Riham Kalta, DMD
- Dr. Vincent Michael, DMD
- Dr. Theodore Katz, DDS
Mailing Address
37 Grandview Ter
North Haven, CT 064732043
Phone: 2035356167