Dr. Jonathan Lash, MD
- Part D claims, 2024
- 22
- Hospital affiliations
- 1
- Industry payments
- $196
- Medical group
- 1
- State license
- 1
- Practice address
- 75 Francis Street, Boston, MA 02115
- Practice phone
- Call (617) 732-5500
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Lash's professional email, personal email and mobile number
Dmand AI checks each channel through healthcare-specific waterfall enrichment. See what is on file with a free account, with practice phones, licenses and affiliations.
Dr. Jonathan Lash is an orthopedic surgeon in Boston, Massachusetts
Dr. Lash practices at Brigham and Women's Hospital in Boston, Massachusetts, part of Mass General Brigham.
Dr. Lash's NPI, 1073191276, was assigned on March 30, 2021. Dr. Lash holds Massachusetts license 1025898.
- NPI
- 1073191276NPI Registry (opens in a new tab)
- Medicare PAC ID
- 5294203956
- NPI enumeration date
- March 30, 2021
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (617) 732-5500
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Jonathan Lash practices at Brigham and Women's Hospital in Boston, Massachusetts
Dr. Lash's primary practice is Brigham and Women's Hospital, at 75 Francis Street, Boston, MA 02115 in Suffolk County. The practice phone is (617) 732-5500.
- Brigham and Women's Hospital75 Francis Street, Boston, MA 02115 · Suffolk CountyPhone(617) 732-5500
Sources: Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Jonathan Lash is affiliated with 1 site of care and 1 medical group
Dr. Lash's primary practice is Brigham and Women's Hospital in Boston, Massachusetts, part of Mass General Brigham. The medical group on file is Brigham and Women's Hospital.
Sources: Dmand AI Affiliation Data; Doctors and Clinicians National Downloadable File (CMS); and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Jonathan Lash's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Lash practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Brigham and Women's Hospital | Available with a free account |
Source: Dmand AI Technology Install Data
For health IT teams
Dmand AI maps EHR vendors, IT decision makers and buying committees across Mass General Brigham and 6.2K+ hospitals, with verified contacts in the same login.
Dr. Jonathan Lash is one of 593 orthopedic surgeons in Massachusetts
Orthopaedic surgery is Dr. Lash's primary specialty in the NPI Registry, under taxonomy code 207X00000X. Dr. Lash is licensed in Massachusetts.
Specialties and state licenses
- Orthopaedic surgery, MassachusettsPrimary
Orthopedic surgeons near Dr. Lash
Counts of orthopedic surgeons with a Dmand AI profile, by place and practice. Each opens the list.
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. Jonathan Lash's patients have a median age of 70
Across all payers, Dmand AI patient panel data puts Dr. Lash's median patient age at 70, with 67% women.
Dr. Lash's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 70
Patient panel by sex, all payers
- Women67%
- Men33%
Source: Dmand AI Patient Panel Data
Dr. Jonathan Lash wrote 22 Medicare Part D claims in 2024
In 2024, Dr. Lash wrote 22 Medicare Part D claims for 13 patients. 100% of them were for generic drugs.
Drug classes CMS tracks in Dr. Lash's Part D claims, 2024
- Opioids64%14 of 22 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Source: Medicare Part D Prescribers - by Provider (CMS), 2024 data
How Dr. Jonathan Lash takes part in Medicare
Dr. Lash accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
For MedTech and pharma teams
Filter 7.4M+ HCPs by Medicare procedures, Part D drugs and Open Payments history, then reach them with verified contacts in one login.
Dr. Jonathan Lash received $196 in industry payments from 2024 to 2025
CMS Open Payments shows 4 general payments to Dr. Lash from 3 drug and device companies from 2024 to 2025. Food and beverage make up the largest share, 100% of the total. Stryker Corporation paid the most, $162.
General payments to Dr. Lash by program year, 2024 to 2025
Companies that paid Dr. Lash the most, 2024 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Dr. Jonathan Lash's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | Dmand AI Affiliation DataDoctors and Clinicians National Downloadable File (CMS) (opens in a new tab) |
| Primary practice, affiliations and health system | Dmand AI Affiliation DataDoctors and Clinicians National Downloadable File (CMS) (opens in a new tab)Dmand AI Org Hierarchy Data |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel Data |
| Part D prescribing | Medicare Part D Prescribers - by Provider (CMS) (opens in a new tab) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Dr. Jonathan Lash
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Dr. Jonathan Lash's NPI number?
Dr. Jonathan Lash's NPI number is 1073191276. It was assigned on March 30, 2021, and it is active in the NPI Registry.
What kind of doctor is Dr. Jonathan Lash?
Dr. Jonathan Lash is an orthopedic surgeon in Boston, Massachusetts. The primary specialty in the NPI Registry is Orthopaedic Surgery Physician (taxonomy code 207X00000X).
Where does Dr. Jonathan Lash practice?
Dr. Lash practices at 75 Francis Street, Boston, MA 02115. Dr. Lash's primary practice is Brigham and Women's Hospital in Boston, Massachusetts, part of Mass General Brigham.
What is Dr. Jonathan Lash's office phone number?
The practice phone on file for Dr. Lash is (617) 732-5500.
What is Dr. Jonathan Lash's medical license number?
Dr. Lash holds Massachusetts license 1025898.
Which hospitals is Dr. Jonathan Lash affiliated with?
Dr. Lash practices at Brigham and Women's Hospital in Boston, Massachusetts.
What medical group is Dr. Jonathan Lash part of?
Dr. Lash is linked to Brigham and Women's Hospital.
Does Dr. Jonathan Lash accept Medicare?
Yes. CMS lists Dr. Lash as accepting Medicare assignment.
Has Dr. Jonathan Lash received payments from drug or device companies?
CMS Open Payments shows $196 in general payments to Dr. Lash from 3 companies from 2024 to 2025. The largest total came from Stryker Corporation.
How long has Dr. Jonathan Lash been practicing?
Dr. Lash's NPI was assigned in 2021.
Selling to orthopaedic surgery practices?
See orthopedic surgeons in Massachusetts by site of care and group
Find the practices, groups and hospitals they work with, and the right people to contact at each.
- 30 days free
- Self-serve
- No credit card