KATZEN MEDICAL ASSOCIATES, PC
KATZEN MEDICAL ASSOCIATES, PC is an organization registered with the National Plan and Provider Enumeration System (NPPES) under NPI 1003627241, based in Reisterstown, MD. It is classified under Optometrist.
Getting there
Here is what surrounds this office in Reisterstown, based on OpenStreetMap data collected Oct 11, 2026. Parking is available about 482 ft away. The nearest transit stop is 663 ft away, served by Main Street & Glyndon Drive Far-side Northbound. A pharmacy sits 0.50 mi from the entrance (NatureCare Pharmacy), which helps if you leave with a prescription.
Getting here and what is nearby
Transit Main Street & Bond Avenue Northbound 189 ft ~1 min
Transit Main Street & Bond Avenue Opposite Southbound 275 ft ~2 min
Parking 355 ft ~2 min
Restaurant Harriman House 379 ft ~2 min
340 Main Street, Reisterstown 21136
Parking 408 ft ~2 min
Parking 482 ft ~2 min
Transit Main Street & Glyndon Drive Far-side Northbound 663 ft ~3 min
Restaurant Reter's Crab House and Grille 0.37 mi ~8 min
Gas station Wawa Gas Pumps 0.42 mi ~9 min
Mo-Su 00:00-24:00
Convenience Wawa 0.44 mi ~9 min
Restaurant Dunkin' 0.47 mi ~10 min
Pharmacy NatureCare Pharmacy 0.50 mi ~10 min
40 Main Street, Reisterstown 21136
Grocery Weis 0.50 mi ~11 min
10 Village Center Road, Reisterstown 21136
Distances are straight‑line estimates — walking routes may be longer. Hours and phone numbers can change; call ahead to confirm.
Credentials and Medicare
NPPES does not list a state licence number for this record. That is not unusual — organizations and some provider types are not required to file one. Verify current licensure with the relevant state board before care.
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 Optometrist covers
Doctors of optometry (ODs) are the primary health care professionals for the eye. Optometrists examine, diagnose, treat, and manage diseases, injuries, and disorders of the visual system, the eye, and associated structures as well as identify related systemic conditions affecting the eye. An optometrist has completed pre-professional undergraduate education in a college or university and four years of professional education at a college of optometry, leading to the doctor of optometry (O.D.) degree. Some optometrists complete an optional residency in a specific area of practice. Optometrists are eye health care professionals state-licensed to diagnose and treat diseases and disorders of the eye and visual system. NUCC Health Care Provider Taxonomy, code 152W00000X
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-2 identifies an organization — a clinic, hospital, group practice, laboratory, or supplier. Individual clinicians working there hold their own NPI-1 numbers separately, so a bill may reference both.
| NPI | 1003627241 valid check digit |
|---|---|
| Entity type | Organization (NPI-2) |
| Enumeration date | Jan 16, 2025 |
| Last updated | Jan 16, 2025 |
| Status | Active |
| Practice address |
310 MAIN ST Reisterstown, MD 21136 (410) 833-5515 Fax (410) 833-7131 |
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 | 6 | 2 | 7 | 2 | 4 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 0 | 0 | 3 | 3 | 2 | 5 | 2 | 8 |
Sum = 49 · next multiple of 10 = 50 · check digit = 1 · actual last digit = 1
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.