NPPES file of Aug 9, 2026

Katzen Medical Associates

Katzen Medical Associates holds 20 active organization NPIs in the federal registry, with practice locations in 10 Maryland cities. 11 list ophthalmology physician as their primary taxonomy; each location can bill under its own NPI.

CMS NPPES registry, file of Aug 9, 2026 · legal names grouped after punctuation and "LLC" are removed · method · Verify with CMS →

Which NPI is yours?

Search the organization with your city to find the NPI for the location you visit or bill.

Find a location's NPI

Baltimore has the most NPIs, 3

  1. Baltimore3
  2. Towson3
  3. Abingdon2
  4. Columbia2
  5. Lutherville2
  6. Owings Mills2
  7. Reisterstown2
  8. Rosedale2

Source: CMS NPPES monthly file of Aug 9, 2026, organization NPIs by practice city.

Most NPIs were issued in 2017 and 2025

Katzen Medical Associates NPIs by year issued2006: 1, 2007: 0, 2008: 0, 2009: 0, 2010: 0, 2011: 0, 2012: 0, 2013: 0, 2014: 0, 2015: 0, 2016: 0, 2017: 6, 2018: 0, 2019: 0, 2020: 1, 2021: 2, 2022: 0, 2023: 0, 2024: 0, 2025: 1002.557.5102007200920112013201520172019202120232025610112
Katzen Medical Associates NPIs by year issued2006: 1, 2007: 0, 2008: 0, 2009: 0, 2010: 0, 2011: 0, 2012: 0, 2013: 0, 2014: 0, 2015: 0, 2016: 0, 2017: 6, 2018: 0, 2019: 0, 2020: 1, 2021: 2, 2022: 0, 2023: 0, 2024: 0, 2025: 1002.557.5102007200920112013201520172019202120232025610112
Katzen Medical Associates NPIs by year issued2006: 1, 2007: 0, 2008: 0, 2009: 0, 2010: 0, 2011: 0, 2012: 0, 2013: 0, 2014: 0, 2015: 0, 2016: 0, 2017: 6, 2018: 0, 2019: 0, 2020: 1, 2021: 2, 2022: 0, 2023: 0, 2024: 0, 2025: 1002.557.51020072010201320162019202220252017: 610

Source: CMS NPPES, enumeration dates.

10 NPIs were issued in 2025 alone, more than in any other year; none in 15 of the years between.

Baltimore locations

The city with the most Katzen Medical Associates NPIs. The full list of all 20 follows.

NPILocationPrimary taxonomyIssued
1962918268301 SAINT PAUL ST STE 902, BaltimoreOphthalmology PhysicianDec 21, 2017
1952112195301 SAINT PAUL ST STE 902, BaltimoreCertified Registered Nurse AnesthetistJan 16, 2025
1902617129301 SAINT PAUL ST STE 902, BaltimoreOptometristJan 16, 2025
All 20 locations, by city
NPILocationPrimary taxonomyIssued
13760596753401 BOX HILL CORPORATE CENTER DR STE 202, AbingdonOphthalmology PhysicianDec 21, 2017
12157484473401 BOX HILL CORPORATE CENTER DR STE 202, AbingdonOptometristJan 16, 2025
1962918268301 SAINT PAUL ST STE 902, BaltimoreOphthalmology PhysicianDec 21, 2017
1952112195301 SAINT PAUL ST STE 902, BaltimoreCertified Registered Nurse AnesthetistJan 16, 2025
1902617129301 SAINT PAUL ST STE 902, BaltimoreOptometristJan 16, 2025
1659952059716 MAIDEN CHOICE LN STE 102, CatonsvilleOphthalmology PhysicianApr 16, 2021
19822329226325 WOODSIDE CT STE 125, ColumbiaOphthalmology PhysicianMar 27, 2020
16498510498860 COLUMBIA 100 PKWY STE 101, ColumbiaOphthalmology PhysicianApr 16, 2021
13260526141209 YORK RD SUITE 200, LuthervilleOphthalmology PhysicianJul 29, 2006
15783747991209 YORK RD, LuthervilleOptometristJan 16, 2025
168948582321 CROSSROADS DR STE 425, Owings MillsOptometristJan 16, 2025
109352620421 CROSSROADS DR STE 425, Owings MillsOphthalmology PhysicianJan 16, 2025
1093221392111 MOUNT CARMEL RD, ParktonOphthalmology PhysicianDec 21, 2017
1275049579310 MAIN ST, ReisterstownOphthalmology PhysicianDec 21, 2017
1003627241310 MAIN ST, ReisterstownOptometristJan 16, 2025
15689788647106 RIDGE RD, RosedaleOphthalmology PhysicianDec 21, 2017
16692838917106 RIDGE RD, RosedaleOptometristJan 16, 2025
1801302104901 DULANEY VALLEY RD STE 200, TowsonOphthalmology PhysicianDec 21, 2017
1164233300901 DULANEY VALLEY RD STE 220, TowsonCertified Registered Nurse AnesthetistJan 16, 2025
1508677725901 DULANEY VALLEY RD STE 220, TowsonOptometristJan 16, 2025

Checking an organization

  1. Match the NPI to the exact location you will visit or bill; each location can have its own.
  2. Confirm the business entity with the secretary of state.
  3. Check the HHS-OIG exclusion list for the organization and its owners.
  4. Verify each clinician you will see on their own record and with the state license search.

Common questions

Why does Katzen Medical Associates have 20 NPIs?

An organization may obtain more than one Type 2 NPI, for example for separate locations or units that bill on their own. Katzen Medical Associates's NPIs list practice locations in 10 cities.

Is an organization NPI a license?

No. An NPI identifies who bills. Facilities and the clinicians who work there are licensed separately by the state.

Source: CMS National Plan and Provider Enumeration System (NPPES), monthly file of Aug 9, 2026 (NPPES files on CMS.gov). An NPI identifies who bills; it is not a license.