Ryan Carlson, MD PHD
Ryan Carlson, MD PHD is a provider specialising in Student in an Organized Health Care Education/Training Program in Boston, MA, registered under NPI 1003618158.
Getting there
Here is what surrounds this office in Boston, based on OpenStreetMap data collected Sep 9, 2026. Parking is available about 444 ft away. There is EV charging 0.44 mi from the office (ChargePoint) — useful if you are driving in from out of town. The nearest transit stop is 0.40 mi away, served by Cambridge St @ Bowdoin St. A pharmacy sits 0.46 mi from the entrance (CVS Pharmacy), which helps if you leave with a prescription. If you arrive early, there is a coffee shop 0.22 mi away.
Getting here and what is nearby
Hotel The Liberty Hotel 279 ft ~2 min
Restaurant Scampo 293 ft ~2 min
215 Charles Street, Boston 02114
Mo-Su 11:30-23:00
Parking 430 ft ~2 min
Parking Fruit Street Garage 432 ft ~2 min
Parking 444 ft ~2 min
Convenience Top Shelf 741 ft ~3 min
161 Charles Street, Boston 02114
Restaurant Little Lamb 713 ft ~3 min
Restaurant Finagle a Bagel 729 ft ~3 min
Pharmacy CVS Pharmacy 811 ft ~4 min
Coffee Blank Street Coffee 854 ft ~4 min
Hotel The Whitney Hotel 839 ft ~4 min
Hotel Wyndham Boston Beacon Hill 0.20 mi ~4 min
Coffee Gong Cha 0.22 mi ~5 min
Coffee Starbucks 0.22 mi ~5 min
222 Cambridge Street, Boston 02114
Mo-Fr 05:30-21:00; Sa-Su 06:00-21:00
Grocery Whole Foods Market 0.25 mi ~5 min
181 Cambridge Street, Boston 02114
Mo-Su 07:00-22:00
Convenience Beacon Hill Market 0.28 mi ~6 min
Mo-Su 07:00-22:00
Transit Martha Rd @ Amy Court 0.29 mi ~6 min
Convenience Beacon Capitol Market 0.33 mi ~7 min
32 Myrtle Street, Boston 02114
Transit Nashua St @ Science Park 0.38 mi ~8 min
Transit Cambridge St @ Bowdoin St 0.40 mi ~9 min
Pharmacy Rite Aid 0.40 mi ~9 min
100 Cambridge Street, Boston 02114
Mo-Fr 07:00-20:00; Sa 08:00-18:00; Su 09:00-18:00
EV charging ChargePoint 0.41 mi ~9 min
EV charging 0.42 mi ~9 min
Grocery DeLuca's Market 0.43 mi ~9 min
EV charging ChargePoint 0.44 mi ~9 min
Pharmacy CVS Pharmacy 0.46 mi ~10 min
100 Cambridgeside Place, Cambridge 02141
Mo-Sa 09:30-21:00; Su 11:00-19:00
Grocery Star Market 0.48 mi ~10 min
90 Causeway Street, Boston 02114
Mo-Su 06:00-23:00
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.
- Status
- Approved
- Provider type
- Order And Referring Only - Otolaryngology
- PAC ID
- 8022520931
- Enrollment ID
- I20250625003439
Medicare enrolment is recorded as approved under the provider type Order And Referring Only - Otolaryngology. 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 Student in an Organized Health Care Education/Training Program covers
An individual who is enrolled in an organized health care education/training program leading to a degree, certification, registration, and/or licensure to provide health care. NUCC Health Care Provider Taxonomy, code 390200000X
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 | 1003618158 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Mar 26, 2025 |
| Last updated | Mar 26, 2025 |
| Status | Active |
| Sole proprietor | No |
| Gender | Male |
| Credential | MD PHD |
| Practice address |
243 CHARLES ST Boston, MA 02114 (617) 523-7900 |
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 | 1 | 8 | 1 | 5 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 0 | 0 | 3 | 3 | 1 | 7 | 1 | 1 |
Sum = 42 · next multiple of 10 = 50 · check digit = 8 · actual last digit = 8
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.