Dr. Nathaniel Ward Lamson , DMD
Dentist • Boston, MA
188 Longwood Ave
Boston, MA 021155888
This profile restates public CMS/NPPES data; T-MedInfo gives no medical advice — consult a licensed professional, and call 911 for emergencies.
Practice Location & Contact Primary Location
188 Longwood Ave
Boston, MA 021155888
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: NPPES taxonomy is a reported classification, not proof of board certification.
Open Payments general payments, program year 2025
All general payments: $82.15 across 3 records.
By nature of payment
- Food and Beverage: $82.15 across 3 records.
Reporting-company totals
- Envista Holdings Corporation: $38.84 across 1 record.
- USA ANGELALIGN TECHNOLOGY CORP: $24.32 across 1 record.
- American Orthodontics Corporation: $18.99 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
2021
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; 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.
Compared with the same specialty in Boston and Massachusetts
745 active clinicians are listed under Dentist with a practice address in Boston, MA (2,936 in Massachusetts).
Addresses are self-reported to NPPES and may be out of date.
Telehealth indicator in Boston
0.4% of these 745 clinicians have the CMS telehealth indicator.
0.9% of these 745 clinicians are listed by CMS as accepting Medicare assignment.
CMS data by year
Changes may reflect reporting, coverage or privacy limits, not changes in care quality.
-
Industry payments (Open Payments)
Industry payments (Open Payments) went from $76.10 in 2022 to $82.15 in 2025.
- 2022: $76.10
- 2023: $142.89
- 2024: $170.79
- 2025: $82.15
Sources: CMS Open Payments (2025), CMS Doctors and Clinicians, 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 $82.15.
| Manufacturer | Payment Nature | Product | Type | Amount ($) |
|---|---|---|---|---|
| Envista Holdings Corporation |
Food and Beverage
In-kind items and services
|
SPARK | General | $38.84 |
| USA ANGELALIGN TECHNOLOGY CORP |
Food and Beverage
Cash or cash equivalent
|
— | General | $24.32 |
| American Orthodontics Corporation |
Food and Beverage
Cash or cash equivalent
|
EMPOWER-METAL | General | $18.99 |
Source: CMS Open Payments, program year 2025, released June 30, 2026.
Specialties & License Numbers Reported to NPPES
Self-certified to NPPES: 2022-07-22NUCC Taxonomy Code: 122300000X
A dentist is a person qualified by a doctorate in dental surgery (D.D.S.) or dental medicine (D.M.D.), licensed by the state to practice dentistry, and practicing within the scope of that license. There is no difference between the two degrees: dentists who have a DMD or DDS have the same education. Universities have the prerogative to determine what degree is awarded. Both degrees use the same curriculum requirements set by the American Dental Association's Commission on Dental Accreditation. Generally, three or more years of undergraduate education plus four years of dental school is required to graduate and become a general dentist. State licensing boards accept either degree as equivalent, and both degrees allow licensed individuals to practice the same scope of general dentistry. Additional post-graduate training is required to become a dental specialist.
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
Dentist
Doctor of Dental Surgery
Dentist
Doctor of Dental Surgery
Dentist
Dentist
Doctor of Dental Surgery
Dentist - Periodontics
Doctor of Dental Surgery
Career & Practice History Timeline
Changes recorded in monthly NPPES data files: addresses, names, credentials, specialties and NPI status
Dentist (license number reported to NPPES: MA DN1859524)
Registered at 188 LONGWOOD AVE, BOSTON, MA 021155888 (Tel: 6174321434)
NPI status registered as active in NPPES database
Registered at 511 E 3RD ST UNIT 301, BETHLEHEM, PA 180152096 (Tel: 4845262460)
Registered at 4 WINSLOW CIR, NEW LONDON, NH 032577110 (Tel: 6034544355)
Recorded as NATHANIEL LAMSON, DMD
Student in an Organized Health Care Education/Training Program
First registered as active Individual Practitioner in NPPES Database.
NPI Administrative Meta
Other Dentists in Boston
- Dr. Rania Arif, DMD
- Shruti Handa
- Dr. Armida Dano, DMD
- Dr. Shilpi Jain, DMD
- Min Kyeong Kim
- Dr. Lindsey Janof, DMD
Mailing Address
4 Winslow Cir
New London, NH 032577110
Phone: 6034544355