Katherine Fish, DDS
Katherine Fish, DDS is a provider specialising in Dentist in Greenfield, MA, registered under NPI 1003273004.
Getting there
Here is what surrounds this office in Greenfield, based on OpenStreetMap data collected Sep 15, 2026. Parking is available about 750 ft away. The nearest transit stop is 0.30 mi away, served by 48 Sanderson St/Franklin Med Cntr. A pharmacy sits 0.48 mi from the entrance (CVS Pharmacy), which helps if you leave with a prescription. If you arrive early, there is a coffee shop 0.33 mi away.
Getting here and what is nearby
Restaurant Goodie's Pizza 124 ft ~1 min
256 Federal Street
Gas station Speedway 323 ft ~2 min
Convenience Speedway 353 ft ~2 min
Pharmacy Walgreens 376 ft ~2 min
5 Pierce Street, Greenfield 01301
Parking 531 ft ~3 min
Restaurant McDonald's 523 ft ~2 min
Parking 701 ft ~3 min
Coffee The Cookie Factory 719 ft ~3 min
Gas station Sunoco 753 ft ~3 min
295 Federal Street
Parking 750 ft ~3 min
Convenience Cumberland Farms 0.20 mi ~4 min
Gas station Cumberland Farms 0.22 mi ~5 min
315;317 Federal Street
Transit 48 Sanderson St/Franklin Med Cntr 0.30 mi ~7 min
Restaurant Subway 0.31 mi ~7 min
343 Federal Street, Greenfield 01301
Mo-Th 07:00-21:00; Fr 07:00-22:00; Sa 08:00-21:00; Su 09:00-20:00
Coffee Adams Donuts 0.33 mi ~7 min
348 Federal Street
Convenience John's 0.44 mi ~9 min
146 Federal Street
Pharmacy CVS Pharmacy 0.48 mi ~10 min
Distances are straight‑line estimates — walking routes may be longer. Hours and phone numbers can change; call ahead to confirm.
Credentials and Medicare
| Licence | State | Specialty |
|---|---|---|
| DN1856609 | MA | Dentist primary |
This provider holds licence DN1856609 issued in MA. A licence number in NPPES reflects what was filed at registration — it does not confirm the licence is still active today.
This NPI does not appear in the PECOS Medicare enrolment file. Providers who do not bill Medicare — or who bill only through a group's enrolment — will not appear here. It is not a sign of any problem with the registration.
What Dentist covers
A dentist is a person qualified by a doctorate in dental surgery (D.D.S.) or dental medicine (D.M.D.), licensed by the state to practice dentistry, and practicing within the scope of that license. There is no difference between the two degrees: dentists who have a DMD or DDS have the same education. Universities have the prerogative to determine what degree is awarded. Both degrees use the same curriculum requirements set by the American Dental Association's Commission on Dental Accreditation. Generally, three or more years of undergraduate education plus four years of dental school is required to graduate and become a general dentist. State licensing boards accept either degree as equivalent, and both degrees allow licensed individuals to practice the same scope of general dentistry. Additional post-graduate training is required to become a dental specialist. NUCC Health Care Provider Taxonomy, code 122300000X
The taxonomy records how the provider classifies their own practice. It does not confirm which conditions they currently treat, whether they are accepting new patients, or which insurance they take — call the office for that.
Full NPPES record
An NPI-1 identifies a single person. It stays with the clinician for life, even if they move practice or change state, which is why the address on file can lag behind where they actually work today.
| NPI | 1003273004 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Jan 21, 2016 |
| Last updated | Jan 21, 2016 |
| Status | Active |
| Sole proprietor | No |
| Gender | Female |
| Credential | DDS |
| Practice address |
262 FEDERAL ST Greenfield, MA 01301 (413) 773-3955 |
Number check
How the check works, step by step
Every NPI carries a Luhn check digit — the same scheme used on credit cards. CMS prefixes the number with 80840 before computing it, which marks it as a US health identifier.
| Digit | 8 | 0 | 8 | 4 | 0 | 1 | 0 | 0 | 3 | 2 | 7 | 3 | 0 | 0 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 0 | 0 | 3 | 4 | 7 | 6 | 0 | 0 |
Sum = 46 · next multiple of 10 = 50 · check digit = 4 · actual last digit = 4
A valid check digit only means the number is well-formed. It does not mean the provider is licensed, active, or in good standing — those are separate questions answered by the sections above.