David Samuel Greenstein, MS, OD
- Medicare patients, 2024
- 26
- Part D claims, 2024
- 11
- Hospital affiliations
- 1
- Industry payments
- $41
- State license
- 1
- Practice address
- 330 Brookline Avenue, Boston, MA 02215
- Practice phone
- Call (617) 667-7000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find David Greenstein'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.
David Samuel Greenstein is an optometrist in Boston, Massachusetts
David Greenstein practices at Beth Israel Deaconess Medical Center in Boston, Massachusetts, part of Beth Israel Lahey Health.
David Greenstein's NPI, 1376518332, was assigned on February 22, 2006. David Greenstein graduated from New England College of Optometry in 1980. David Greenstein holds Massachusetts license 2817.
- NPI
- 1376518332NPI Registry (opens in a new tab)
- Medicare PAC ID
- 2062553308
- NPI enumeration date
- February 22, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (617) 667-7000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 72
- Medical school graduation
- 1980
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
David Samuel Greenstein practices at Beth Israel Deaconess Medical Center in Boston, Massachusetts
David Greenstein's primary practice is Beth Israel Deaconess Medical Center, at 330 Brookline Avenue, Boston, MA 02215 in Suffolk County. The practice phone is (617) 667-7000.
- Beth Israel Deaconess Medical Center330 Brookline Avenue, Boston, MA 02215 · Suffolk CountyPhone(617) 667-7000
Source: Dmand AI Affiliation Data
David Samuel Greenstein is affiliated with 1 site of care
David Greenstein's primary practice is Beth Israel Deaconess Medical Center in Boston, Massachusetts, part of Beth Israel Lahey Health.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at David Samuel Greenstein's practice
Dmand AI tracks the electronic health record (EHR) system at each site where David Greenstein practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Beth Israel Deaconess Medical Center | 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 Beth Israel Lahey Health and 6.2K+ hospitals, with verified contacts in the same login.
David Samuel Greenstein is one of 1,098 optometrists in Massachusetts
Optometrist is David Greenstein's primary specialty in the NPI Registry, under taxonomy code 152W00000X. David Greenstein is licensed in Massachusetts.
Specialties and state licenses
- Optometrist, MassachusettsPrimary
Optometrists near David Greenstein
Counts of optometrists 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
David Samuel Greenstein treated 26 Medicare patients in 2024, average age 73
CMS counts 26 Medicare patients who saw David Greenstein in 2024. 73% of them have high cholesterol, and 65% have high blood pressure. Their average risk score is 0.86, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts David Greenstein's median patient age at 58, with 61% women.
David Greenstein's Medicare patients by sex, 2024
- Women1246%
- Men1454%
Chronic conditions among David Greenstein's Medicare patients, 2024
- High cholesterol73%
- High blood pressure65%
Share of Medicare patients with each condition. A patient can have several.
David Greenstein's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 58
Patient panel by sex, all payers
- Women61%
- Men39%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
David Samuel Greenstein wrote 11 Medicare Part D claims in 2024
In 2024, David Greenstein wrote 11 Medicare Part D claims.
Source: Medicare Part D Prescribers - by Provider (CMS), 2024 data
How David Samuel Greenstein takes part in Medicare
David Greenstein 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.
David Samuel Greenstein received $41 in industry payments in 2025
CMS Open Payments shows 2 general payments to David Greenstein from 1 drug or device company in 2025. Food and beverage make up the largest share, 100% of the total. Bristol-Myers Squibb Company paid the most, $41.
Companies that paid David Greenstein the most, 2025 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
David Samuel Greenstein graduated from New England College of Optometry
David Greenstein graduated from New England College of Optometry in 1980.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for David Samuel Greenstein'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 Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation DataDmand AI Org Hierarchy Data |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab) |
| 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) |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| 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 David Samuel Greenstein
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is David Samuel Greenstein's NPI number?
David Samuel Greenstein's NPI number is 1376518332. It was assigned on February 22, 2006, and it is active in the NPI Registry.
What does David Samuel Greenstein specialize in?
David Samuel Greenstein is an optometrist in Boston, Massachusetts. The primary specialty in the NPI Registry is Optometrist (taxonomy code 152W00000X).
Where does David Samuel Greenstein practice?
David Greenstein practices at 330 Brookline Avenue, Boston, MA 02215. David Greenstein's primary practice is Beth Israel Deaconess Medical Center in Boston, Massachusetts, part of Beth Israel Lahey Health.
What is David Samuel Greenstein's office phone number?
The practice phone on file for David Greenstein is (617) 667-7000.
What is David Samuel Greenstein's medical license number?
David Greenstein holds Massachusetts license 2817.
Which hospitals is David Samuel Greenstein affiliated with?
David Greenstein practices at Beth Israel Deaconess Medical Center in Boston, Massachusetts.
Does David Samuel Greenstein accept Medicare?
Yes. CMS lists David Greenstein as accepting Medicare assignment.
How many Medicare patients does David Samuel Greenstein see?
CMS counts 26 Medicare patients who saw David Greenstein in 2024, with an average age of 73.
Where did David Samuel Greenstein go to medical school?
David Greenstein graduated from New England College of Optometry in 1980.
Has David Samuel Greenstein received payments from drug or device companies?
CMS Open Payments shows $41 in general payments to David Greenstein from 1 company from 2025 to 2025. The largest total came from Bristol-Myers Squibb Company.
How long has David Samuel Greenstein been practicing?
David Greenstein graduated from medical school in 1980, 46 years ago.
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