Katherine Mam, OD
Optometrist · Dracut, MA
Katherine Mam, OD is an optometrist with a practice address in Dracut, Massachusetts, and NPI 1265021703, issued on Jan 11, 2021. Check the license (Massachusetts 5445, as entered in NPPES) with the Massachusetts board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Katherine Mam
- Credential
- OD
- Primary taxonomy
- Optometrist 152W00000X
- License number
- 5445 MA
Self-reported in NPPES; status is on the state search - Practice location
- 91 Mill St Ste 6, Dracut, MA 01826
- Phone
- (978) 957-4750
- Enumerated
- Jan 11, 2021
- Record last updated
- Aug 28, 2024
- Medicare enrollment
- Enrolled (PECOS I20210323001222); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest optometrist records → All 1,501 in Massachusetts → Look up another NPI →
Also registered at 91 Mill St Ste 6
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Michael Hill, O.D.Optometrist1942485008
Verify Katherine Mam in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Massachusetts board licenses this profession
Search for license 5445Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
66% fewer Medicare Part D claims than the average optometrist in 2024
95 Medicare Part D claims for 59 beneficiaries, against an average of 277 among the 33,128 providers of this specialty who prescribed in Part D. Brand-name drugs were 61% of claims.
Most prescribed
- Neomycin-Polymyxin-Dexameth22 claims
- Restasis16 claims
- Latanoprost13 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Industry payments in 2024: $121.76
2 payments; by number, the most common kind was food and beverage; the largest payer was Alcon Vision LLC. 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.
Bills Medicare through one group practice
- Hill Eye Associates, PLLCDracut, MA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Katherine Mam among 1,501 optometrist records in Massachusetts
Katherine Mam, 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 2021, is newer than 84% of them.
- NPI issued2021 · 84% of these records are older, 14% newer
- In a Medicare fileYes · 66% of these records are
- In the CMS Doctors and Clinicians fileYes · 62% of these records are
- Graduated2020 · median 2008 among the 933 with a school on file
- Record last updated2024 · 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).
6 optometrist records list a practice address in Dracut
They are 6 of the 267 NPPES records with a practice address in Dracut, and 1,501 optometrist records in Massachusetts.
All 1,501 in Massachusetts → Every provider in Dracut → Optometrist nationwide →
The 8 optometrist records with the nearest ZIP codes
- Joann Albertin, O.D.Dracut, MA 018261861559924
- Erica Hill, D.O.Dracut, MA 018261639158751
- Donald Hill, O.D.Dracut, MA 018261376576090
- Michael Hill, O.D.Dracut, MA 018261942485008
- Marie Salvas, O.D.Dracut, MA 018261538162847
- Stephen Adelstein, ODChelmsford, MA 018241790770980
- Michael AyerChelmsford, MA 018241770649584
- Florence Bahtiarian, O.D.Chelmsford, MA 018241427080191
Common questions
What is Katherine Mam, OD's NPI number?
Katherine Mam, OD's National Provider Identifier (NPI) is 1265021703, issued on Jan 11, 2021. An NPI identifies a provider in billing; it is not a license.
Where is Katherine Mam, OD located?
The NPPES record lists a practice address at 91 Mill St Ste 6, Dracut, MA, 01826. Phone: (978) 957-4750. Providers update this record themselves, so call before visiting.
How can I verify Katherine Mam, OD's license?
NPPES lists Massachusetts license number 5445, as entered by the provider. Search the Massachusetts board that licenses this profession; the NPPES record confirms identity only.
How much does Katherine Mam, OD prescribe under Medicare Part D?
In 2024, Katherine Mam, OD had 95 Medicare Part D claims for 59 beneficiaries; the average among optometrist prescribers was 277. Part D covers Medicare prescriptions 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.