Mary Perry, CPNP-AC/PC
Mary Perry, CPNP-AC/PC is a Pediatric Nurse Practitioner in Baltimore, MD, registered under NPI 1003420282.
Getting there
Here is what surrounds this office in Baltimore, based on OpenStreetMap data collected Sep 25, 2026. Parking is available about 653 ft away at Pratt Street Garage. There is EV charging 0.43 mi from the office — useful if you are driving in from out of town. The nearest transit stop is 279 ft away, served by MLK Boulevard & Lombard Street Far-side Northbound. A pharmacy sits 0.42 mi from the entrance (Rite Aid), which helps if you leave with a prescription. If you arrive early, there is a coffee shop 0.31 mi away.
Getting here and what is nearby
Transit Lombard Street & MLK Boulevard Westbound 186 ft ~1 min
Transit Martin Luther King Jr. Boulevard 192 ft ~1 min
Transit MLK Boulevard & Lombard Street Far-side Northbound 279 ft ~2 min
Parking Penn Street Garage 348 ft ~2 min
Parking 508 ft ~2 min
800 Lemmon Street, Baltimore 21201
Restaurant Penn Restaurant 599 ft ~3 min
Parking Pratt Street Garage 653 ft ~3 min
Restaurant Silver Moon 1 863 ft ~4 min
Restaurant Colala Grind Express 960 ft ~4 min
Hotel Hampton Inn 0.24 mi ~5 min
Convenience 7-Eleven 0.25 mi ~6 min
Convenience Sonoco 0.25 mi ~6 min
400 Russell Street, Baltimore 21230
Gas station Sunoco 0.26 mi ~6 min
Pharmacy Midas Pharmacy 0.27 mi ~6 min
Coffee Cafe on the Square 0.29 mi ~6 min
Convenience 7-Eleven 0.29 mi ~6 min
Pharmacy University of Maryland Medical Center Pharmacy 0.29 mi ~6 min
11 South Paca Street, Baltimore 21201
Coffee The Stoop 0.30 mi ~6 min
784 Washington Boulevard, Baltimore 21230
07:00-17:00
Hotel Baltimore Marriott Inner Harbor Camden Yards 0.30 mi ~7 min
Coffee Starbucks 0.31 mi ~7 min
EV charging ChargePoint 0.33 mi ~7 min
Hotel SpringHill Suites Baltimore Downtown Convention Center Area 0.39 mi ~8 min
Pharmacy Rite Aid 0.42 mi ~9 min
300 North Martin Luther King Jr. Boulevard, Baltimore 21201
EV charging 0.43 mi ~9 min
EV charging 0.43 mi ~9 min
Gas station Exxon 0.46 mi ~10 min
Grocery SuperFresh 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 |
|---|---|---|
| R208134 | MD | Pediatric Nurse Practitioner primary |
This provider holds licence R208134 issued in MD. 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 Pediatrics covers
Definition to come... NUCC Health Care Provider Taxonomy, code 363LP0200X
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 | 1003420282 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Sep 3, 2020 |
| Last updated | Sep 3, 2020 |
| Status | Active |
| Sole proprietor | No |
| Gender | Female |
| Credential | CPNP-AC/PC |
| Practice address |
737 W LOMBARD ST STE 314 Baltimore, MD 21201 (410) 328-5887 |
| Mailing address |
100 RIGGS AVE Severna Park, MD 21146 |
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 | 4 | 2 | 0 | 2 | 8 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 0 | 0 | 3 | 8 | 2 | 0 | 2 | 7 |
Sum = 48 · next multiple of 10 = 50 · check digit = 2 · actual last digit = 2
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.