Samuel Stack, OD
Optometrist · Littleton, NH
Samuel Stack, OD is an optometrist with a practice address in Littleton, New Hampshire, and NPI 1114542149, issued on Jun 16, 2020. Check the license (New Hampshire 1042, as entered in NPPES) with the New Hampshire board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Samuel Stack
- Credential
- OD
- Primary taxonomy
- Optometrist 152W00000X
- License numbers
- 1042 NH
OEG003662 PA
Self-reported in NPPES; status is on the state search - Practice location
- 104 Meadow St, Littleton, NH 03561
- Phone
- (603) 444-2592
- Enumerated
- Jun 16, 2020
- Record last updated
- Aug 27, 2021 (not updated in 5 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20210809002218); accepts Medicare assignment
- Medical or professional school
- State University Of New York - State College Optometry, 2020
- Entity
- Type 1 · individual
8 nearest optometrist records → All 293 in New Hampshire → Look up another NPI →
Also registered at 104 Meadow St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Erica Griffin, ODOptometrist1275948135
- William Holmes, ODOptometrist1669544144
- Laura Karle, ODOptometrist1659997070
- Kyle Keyser, ODOptometrist1538714035
- Kevin Stratton, ODOptometrist1285706762
- Winnie Tseng, ODOptometrist1629140108
Verify Samuel Stack in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich New Hampshire board licenses this profession
Search for license 1042Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
40% fewer Medicare Part D claims than the average optometrist in 2024
167 Medicare Part D claims for 40 beneficiaries, against an average of 277 among the 33,128 providers of this specialty who prescribed in Part D. Brand-name drugs were 43% of claims.
Most prescribed
- Latanoprost61 claims
- Timolol Maleate21 claims
- Restasis17 claims
- Cyclosporine13 claims
- Travoprost11 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: $133.16
5 payments; by number, the most common kind was food and beverage; the largest payer was Oyster Point Pharma, 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.
Bills Medicare through one group practice
- Envision Eye Care, PLLCLittleton, NH
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Samuel Stack among 293 optometrist records in New Hampshire
Samuel Stack, OD is one of 293 optometrist records with a practice address in New Hampshire. 74% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2020, is newer than 83% of them.
- NPI issued2020 · 83% of these records are older, 13% newer
- In a Medicare fileYes · 74% of these records are
- In the CMS Doctors and Clinicians fileYes · 69% of these records are
- Graduated2020 · median 2007 among the 202 with a school on file
- Record last updated2021 · 67% 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 New Hampshire practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
10 optometrist records list a practice address in Littleton
They are 10 of the 304 NPPES records with a practice address in Littleton, and 293 optometrist records in New Hampshire.
All 293 in New Hampshire → Every provider in Littleton → Optometrist nationwide →
The 8 optometrist records with the nearest ZIP codes
- Erica Griffin, ODLittleton, NH 035611275948135
- William Holmes, ODLittleton, NH 035611669544144
- Laura Karle, ODLittleton, NH 035611659997070
- Kyle Keyser, ODLittleton, NH 035611538714035
- Kevin Stratton, ODLittleton, NH 035611285706762
- Winnie Tseng, ODLittleton, NH 035611629140108
- Joel Tuite, O.D.Littleton, NH 035611912107285
- Ryan Watari, ODLittleton, NH 035611437761731
Common questions
What is Samuel Stack, OD's NPI number?
Samuel Stack, OD's National Provider Identifier (NPI) is 1114542149, issued on Jun 16, 2020. An NPI identifies a provider in billing; it is not a license.
Where is Samuel Stack, OD located?
The NPPES record lists a practice address at 104 Meadow St, Littleton, NH, 03561. Phone: (603) 444-2592. Providers update this record themselves, so call before visiting.
How can I verify Samuel Stack, OD's license?
NPPES lists New Hampshire license number 1042, as entered by the provider. Search the New Hampshire board that licenses this profession; the NPPES record confirms identity only.
How much does Samuel Stack, OD prescribe under Medicare Part D?
In 2024, Samuel Stack, OD had 167 Medicare Part D claims for 40 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.