Arthur Sytkowski, M.D.
Arthur Sytkowski, M.D. is a Hematology (Pathology) Physician in Boston, MA, registered under NPI 1003031469.
Getting there
Here is what surrounds this office in Boston, based on OpenStreetMap data collected Aug 31, 2026. Parking is available about 842 ft away at MASCO Building. There is EV charging 0.49 mi from the office (ChargePoint) — useful if you are driving in from out of town. The nearest transit stop is 519 ft away, served by Brookline Ave @ Longwood Ave. A pharmacy sits 0.43 mi from the entrance (Fenway Health Pharmacy), which helps if you leave with a prescription. If you arrive early, there is a coffee shop 779 ft away.
Getting here and what is nearby
Restaurant Dunkin' 104 ft ~1 min
330 Brookline Avenue, Boston 02215
Mo-Tu 06:00-16:00; We 06:00-14:00; Th-Fr 06:00-16:00; Sa-Su 00:00-24:00
Parking Main Garage 224 ft ~1 min
340 Brookline Avenue
Transit Brookline Ave opp Short St 257 ft ~1 min
Transit Brookline Ave @ Short St 284 ft ~2 min
Transit Brookline Ave @ Longwood Ave 519 ft ~2 min
Coffee Starbucks 527 ft ~2 min
364 Brookline Avenue, Boston 02115
Mo-Fr 05:30-20:00
Parking 596 ft ~3 min
45 Avenue Louis Pasteur
Restaurant Dunkin' 614 ft ~3 min
Mo-Fr 06:00-17:00; Sa-Su 09:00-15:00
Hotel Inn at Longwood Medical 664 ft ~3 min
Pharmacy CVS Pharmacy 711 ft ~3 min
350 Longwood Avenue, Boston 02115
Mo-Fr 06:30-22:00; Sa-Su 08:00-22:00
Restaurant McDonald's 669 ft ~3 min
340-350 Longwood Avenue, Boston 02115
Mo-Fr 06:30-22:00; Sa 07:00-20:00; Su 07:30-20:00
Coffee Starbucks 762 ft ~3 min
283 Longwood Avenue, Boston 02115
Mo-Fr 05:30-20:00; Sa-Su 06:00-19:00
Coffee Caffè Nero 779 ft ~3 min
Parking MASCO Building 842 ft ~4 min
375 Longwood Avenue
Grocery Star Market 0.35 mi ~8 min
33 Kilmarnock Street, Boston 02215
Mo-Su 06:00-23:00
Convenience 7-Eleven 0.39 mi ~8 min
Pharmacy CVS Pharmacy 0.42 mi ~9 min
Pharmacy Fenway Health Pharmacy 0.43 mi ~9 min
1340 Boylston Street, Boston 02115
Convenience Food Mart 0.44 mi ~9 min
Gas station Shell 0.44 mi ~9 min
1600 Tremont Street
EV charging Boston Supercharger 0.45 mi ~10 min
Grocery Stop & Shop 0.45 mi ~9 min
1620 Tremont Street, Boston 02120
Mo-Su 07:00-22:00
Convenience 7-Eleven 0.46 mi ~10 min
Grocery H Mart 0.47 mi ~10 min
1028 Beacon Street, Brookline 02446
Hotel Residence Inn Boston Back Bay/Fenway 0.48 mi ~10 min
EV charging ChargePoint 0.49 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 |
|---|---|---|
| 35458 | MA | Hematology (Pathology) Physician primary |
This provider holds licence 35458 issued in MA. 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 Hematology covers
A hematopathologist is expert in diseases that affect blood cells, blood clotting mechanisms, bone marrow and lymph nodes. This physician has the knowledge and technical skills essential for the laboratory diagnosis of anemias, leukemias, lymphomas, bleeding disorders and blood clotting disorders. NUCC Health Care Provider Taxonomy, code 207ZH0000X
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 | 1003031469 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Apr 13, 2007 |
| Last updated | Jul 8, 2007 |
| Status | Active |
| Sole proprietor | No |
| Gender | Male |
| Credential | M.D. |
| Practice address |
BETH ISRAEL DEACONESS ONE DEACONESS ROAD Boston, MA 02215 (617) 632-9980 |
| Mailing address |
330 BROOKLINE AVE Boston, MA 02215 |
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 | 0 | 3 | 1 | 4 | 6 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 0 | 0 | 3 | 0 | 3 | 2 | 4 | 3 |
Sum = 41 · next multiple of 10 = 50 · check digit = 9 · actual last digit = 9
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.