Doctor profile · Federal record

Dr. Thomas Ostrander, M.D.

Internal Medicine Physician (CMS: Internal Medicine) · Emergency Medicine Physician · Boston, MA

  • NPI 1841511482
  • Accepts Medicare
  • 16 yrs in practice
  • Male
  • Group practice
  • No sanctions

Practice & contact

NPPES Updated May 11, 2026
Primary practice
801 Massachusetts Ave, Crosstown 2
Boston, MA 021182605
(617) 414-4376
fax (617) 414-4676
Mailing address
850 Harrison Ave, Yacc Bn-C7
Boston, MA 021184001

Credentials & registration

NPPES · NUCC
NPI registered
June 2010 — 16 yrs on file
Profile last updated
November 24, 2014
Year of graduation
2010 — 16 yrs since
Specialty taxonomy
207R00000X — NUCC code
State license (1)
Massachusetts #255679

Federal sanctions & exclusions

OIG LEIE Updated May 11, 2026

No sanctions, exclusions or revocations on file

Checked against OIG LEIE on NPI 1841511482. Last verified May 11, 2026.

Medicare procedures · 2023

Top services delivered

CMS Provider Utilization
Total services
182
Distinct HCPCS
4
Medicare allowed
$18,620
HCPCS Description Services Patients Avg allowed
99232 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes 122 40 $84
99239 Hospital discharge day management, more than 30 minutes 25 25 $123
99233 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes 20 17 $126
99223 Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes 15 15 $184

In context: peer comparison

Among 547 peers in this city , average services per provider: 81. This provider delivers 2.2× the peer median.

Hospital affiliations

CMS Hospital Compare

Frequently asked questions

Auto-generated from federal data
What is Dr. Thomas Ostrander's medical specialty?
Dr. Thomas Ostrander practices Internal Medicine Physician in Boston, MA.
Where does Dr. Thomas Ostrander practice?
Dr. Thomas Ostrander practices at 801 Massachusetts Ave, Boston, MA 021182605. Office phone: 6174144376.
What is Dr. Thomas Ostrander's NPI?
Dr. Thomas Ostrander's National Provider Identifier (NPI) is 1841511482, issued by NPPES.
Does Dr. Thomas Ostrander accept Medicare assignment?
Yes. Dr. Thomas Ostrander accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Thomas Ostrander commonly perform?
Top Medicare-reported procedures in 2023: Subsequent hospital care with moderate levelof medical decision making (HCPCS 99232); Hospital discharge day management (HCPCS 99239); Subsequent hospital care with moderate levelof medical decision making (HCPCS 99233). Source: CMS Medicare Physician & Other Practitioners file.