Cassandra Lynne Mark, OD
Optometrist · Newton, MA
Cassandra Lynne Mark, OD is an optometrist with a practice address in Newton, Massachusetts, and NPI 1487182010, issued on May 26, 2017. Check the license (Massachusetts 5229, as entered in NPPES) with the Massachusetts board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Cassandra Lynne Mark
- Credential
- OD
- Primary taxonomy
- Optometrist 152W00000X
- License number
- 5229 MA
Self-reported in NPPES; status is on the state search - Practice location
- 42 Langley RD, Newton, MA 02459
- Phone
- (617) 431-5747
- Enumerated
- May 26, 2017
- Record last updated
- Jul 20, 2026
- Fax
- (617) 431-5747
- Medicare enrollment
- Enrolled (PECOS I20200414000216); accepts Medicare assignment
- Medical or professional school
- New England College Of Optometry, 2017
- Entity
- Type 1 · individual
8 nearest optometrist records → All 1,501 in Massachusetts → Look up another NPI →
Verify Cassandra Lynne Mark in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Massachusetts board licenses this profession
Search for license 5229Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Industry payments in 2024: $363.01
3 payments; by number, the most common kind was food and beverage; the largest payer was Bausch & Lomb Americas Inc. The 34,453 providers of this specialty with any payment received $769.99 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Cassandra Lynne Mark among 1,501 optometrist records in Massachusetts
Cassandra Lynne Mark, OD is one of 1,501 optometrist records with a practice address in Massachusetts. 66% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2017, is newer than 75% of them.
- NPI issued2017 · 75% of these records are older, 22% newer
- In a Medicare fileYes · 66% of these records are
- In the CMS Doctors and Clinicians fileYes · 62% of these records are
- Graduated2017 · median 2008 among the 933 with a school on file
- Record last updated2026 · 64% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 152W00000X and a Massachusetts practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Optometrist providers in Massachusetts
There are 1,501 optometrist records in Massachusetts.
All 1,501 in Massachusetts → Every provider in Newton → Optometrist nationwide →
The 8 optometrist records with the nearest ZIP codes
- Arthur MackayNewton, MA 024591174089957
- Bety Muler, OD OPTOMETRY DOCTORNewton, MA 024591023162112
- Olga Zeldin, O.D.Newton, MA 024591467507772
- Steven Brodhead, O.D.Newton, MA 024581255498168
- William Livingston, O.D.Newtonville, MA 024601295812394
- Denis Shlosman, ODNewtonville, MA 024601760970503
- Vivek Mallampalli, ODNewton, MA 024611629636550
- Laroushna Pierre, O.D.Newton Highlands, MA 024611215137856
Common questions
What is Cassandra Lynne Mark, OD's NPI number?
Cassandra Lynne Mark, OD's National Provider Identifier (NPI) is 1487182010, issued on May 26, 2017. An NPI identifies a provider in billing; it is not a license.
Where is Cassandra Lynne Mark, OD located?
The NPPES record lists a practice address at 42 Langley RD, Newton, MA, 02459. Phone: (617) 431-5747. Providers update this record themselves, so call before visiting.
How can I verify Cassandra Lynne Mark, OD's license?
NPPES lists Massachusetts license number 5229, as entered by the provider. Search the Massachusetts board that licenses this profession; the NPPES record confirms identity only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.