Alison Eissler, CRNP
Alison Eissler, CRNP is an Adult Health Nurse Practitioner in Baltimore, MD, registered under NPI 1003209503. This provider registers 2 separate taxonomy codes, which usually means they practise across more than one recognised specialty.
Getting there
Here is what surrounds this office in Baltimore, based on OpenStreetMap data collected Sep 11, 2026. Parking is available about 1,029 ft away at The Garage at the Saratoga Building. There is EV charging 0.46 mi from the office (ChargePoint) — useful if you are driving in from out of town. The nearest transit stop is 388 ft away, served by Saratoga Street & Fremont Avenue Westbound. A pharmacy sits 0.48 mi from the entrance (University of Maryland Medical Center Pharmacy), which helps if you leave with a prescription. If you arrive early, there is a coffee shop 0.47 mi away.
Getting here and what is nearby
Pharmacy Rite Aid 206 ft ~1 min
300 North Martin Luther King Jr. Boulevard, Baltimore 21201
Transit Saratoga Street & MLK Boulevard Eastbound 261 ft ~1 min
Transit Saratoga Street & MLK Boulevard Far-side Westbound 284 ft ~2 min
Transit Saratoga Street & Fremont Avenue Westbound 388 ft ~2 min
Parking Lexington Street Garage 859 ft ~4 min
680 West Lexington Street, Baltimore 21201
Mo-Fr 05:30-23:00, Sa 07:00-19:00
Parking Koester Lot 977 ft ~4 min
Parking The Garage at the Saratoga Building 1,029 ft ~4 min
220 Arch Street, Baltimore 21201
Restaurant Silver Moon 1 0.27 mi ~6 min
Restaurant Culture Caribbean Cuisine 0.29 mi ~6 min
512 Pennsylvania Avenue, Baltimore 21201
Restaurant Colala Grind Express 0.29 mi ~6 min
Gas station Exxon 0.30 mi ~7 min
Grocery Harlem Grocery 0.34 mi ~7 min
662 North Fremont Avenue, Baltimore 21217
Gas station Gulf 0.38 mi ~8 min
417 West Mulberry Street, Baltimore 21201
Coffee Dear Globe Coffee 0.39 mi ~8 min
422 West Mulberry Street, Baltimore 21201
We 12:00-14:00; Th-Fr 08:00-14:00; Sa 09:00-14:00
Grocery 7 Food Market 0.42 mi ~9 min
Grocery Save-A-Lot 0.43 mi ~9 min
Coffee Starbucks 0.45 mi ~10 min
Convenience Harlem Mini Mart 0.45 mi ~9 min
1133 Pennsylvania Avenue, Baltimore 21201
Convenience George’s Grocery 0.45 mi ~10 min
606A North Eutaw Street, Baltimore 21201
EV charging ChargePoint 0.46 mi ~10 min
Hotel SpringHill Suites Baltimore Downtown Convention Center Area 0.46 mi ~10 min
Coffee Cafe on the Square 0.47 mi ~10 min
Pharmacy University of Maryland Medical Center Pharmacy 0.48 mi ~10 min
11 South Paca Street, Baltimore 21201
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 |
|---|---|---|
| R205878 | MD | Adult Health Nurse Practitioner primary |
| R205878 | MD | Gerontology Nurse Practitioner |
This provider holds licence R205878 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 Adult Health covers
Definition to come... NUCC Health Care Provider Taxonomy, code 363LA2200X
All registered taxonomy codes
This provider registers 2 taxonomy codes. The primary code is what appears on most claims; the others record additional recognised specialties.
| Code | Specialty | Licence | State | |
|---|---|---|---|---|
| 363LA2200X | Adult Health Nurse Practitioner Adult Health | R205878 | MD | primary |
| 363LG0600X | Gerontology Nurse Practitioner Gerontology | R205878 | MD |
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 | 1003209503 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Mar 9, 2015 |
| Last updated | Mar 9, 2015 |
| Status | Active |
| Sole proprietor | No |
| Gender | Female |
| Credential | CRNP |
| Practice address |
312 N. MARTIN LUTHER KING JR. BLVD SUITE 102 Baltimore, MD 21201 (610) 716-0192 |
| Mailing address |
312 N. MARTIN LUTHER KING JR. BOULEVARD SUITE 102 Baltimore, MD 21201 |
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 | 0 | 9 | 5 | 0 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 0 | 0 | 3 | 4 | 0 | 9 | 5 | 0 |
Sum = 47 · next multiple of 10 = 50 · check digit = 3 · actual last digit = 3
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.