Lynn Desrosiers, FNP-C
Lynn Desrosiers, FNP-C is a Family Nurse Practitioner in Baltimore, MD, registered under NPI 1003649336. NPPES records them as a sole proprietor, meaning the practice is not incorporated as a separate legal entity.
Getting there
Here is what surrounds this office in Baltimore, based on OpenStreetMap data collected Sep 7, 2026. Parking is available about 0.27 mi away at McElderry Garage. The nearest transit stop is 701 ft away, served by Washington Street & Orleans Street Northbound. A pharmacy sits 0.33 mi from the entrance (Walgreens), which helps if you leave with a prescription. If you arrive early, there is a coffee shop 0.32 mi away.
Getting here and what is nearby
Transit Wolfe Street & Orleans Street Southbound 378 ft ~2 min
Transit Wolfe Street & McElderry Street Far-side 460 ft ~2 min
Parking Orleans Street Garage 503 ft ~2 min
Gas station Amoco 572 ft ~3 min
Coffee Cobblestone Cafe 657 ft ~3 min
Transit Washington Street & Orleans Street Northbound 701 ft ~3 min
Parking Washington Hill Lot 698 ft ~3 min
Restaurant Dino's Restaurant 736 ft ~3 min
Gas station Citgo 833 ft ~4 min
2001 Orleans Street, Baltimore 21231
Pharmacy Johns Hopkins Outpatient Pharmacy 921 ft ~4 min
Pharmacy CVS Pharmacy 921 ft ~4 min
Restaurant Hopkins Spot 918 ft ~4 min
Restaurant Popeyes 919 ft ~4 min
Convenience Black Diamond Smoke Shop and Deli 0.20 mi ~4 min
2003 East Monument Street, Baltimore 21205
Convenience 7-Eleven 0.25 mi ~5 min
Hotel Residence Inn 0.27 mi ~6 min
Parking McElderry Garage 0.27 mi ~6 min
555 North Caroline Street, Baltimore 21205
Convenience Super Save 0.28 mi ~6 min
2100 East Monument Street, Baltimore 21205
Coffee Starbucks 0.32 mi ~7 min
Pharmacy Walgreens 0.33 mi ~7 min
900 North Washington Street
Gas station BP 0.47 mi ~10 min
1300 East Fayette Street, Baltimore 21231
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 |
|---|---|---|
| R170635 | MD | Family Nurse Practitioner primary |
This provider holds licence R170635 issued in MD. A licence number in NPPES reflects what was filed at registration — it does not confirm the licence is still active today.
- Status
- Approved
- Provider type
- Order And Referring Only - Nurse Practitioner
- PAC ID
- 7810428695
- Enrollment ID
- I20241003002590
Medicare enrolment is recorded as approved under the provider type Order And Referring Only - Nurse Practitioner. Being enrolled means the provider can bill Medicare; it does not tell you whether they are currently accepting new Medicare patients. Call the office to confirm.
What Family covers
Definition to come... NUCC Health Care Provider Taxonomy, code 363LF0000X
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 | 1003649336 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Aug 22, 2024 |
| Last updated | Aug 22, 2024 |
| Status | Active |
| Sole proprietor | Yes |
| Gender | Female |
| Credential | FNP-C |
| Practice address |
1800 ORLEANS ST Baltimore, MD 21287 (410) 955-2800 |
| Mailing address |
3931 KESWICK RD Baltimore, MD 21211 |
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 | 4 | 9 | 3 | 3 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 0 | 0 | 3 | 3 | 4 | 9 | 3 | 6 |
Sum = 54 · next multiple of 10 = 60 · check digit = 6 · actual last digit = 6
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.