Doctor profile · Federal record
Dr. Mark Poznansky, MD PHD
Internal Medicine Physician (CMS: Infectious Disease) · Infectious Disease Physician · Boston, MA
- NPI 1265509889
- Accepts Medicare
- 41 yrs in practice
- Male
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
Infectious Disease Associates, 55 Fruit Street Cox 5
Boston, MA 021142696
(617) 726-3906 - Mailing address
-
Mass General Physician Organization, Po Box 9142
Charlestown, MA 021299142
Credentials & registration
- NPI registered
- November 2006 — 20 yrs on file
- Profile last updated
- October 29, 2007
- Year of graduation
- 1985 — 41 yrs since
- Specialty taxonomy
- 207R00000X — NUCC code
- State license (1)
- Massachusetts #157686
- Medicaid
- MA #3190765
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1265509889. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
128
Distinct HCPCS
2
Medicare allowed
$17,516
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99233 |
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes | 105 | 42 | $126 | |
99223 |
Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes | 23 | 23 | $184 |
In context: peer comparison
Among 547 peers in this city , average services per provider: 81. This provider delivers 1.6× the peer median.Frequently asked questions
What is Dr. Mark Poznansky's medical specialty?
Dr. Mark Poznansky practices Internal Medicine Physician in Boston, MA.
Where does Dr. Mark Poznansky practice?
Dr. Mark Poznansky practices at Infectious Disease Associates, Boston, MA 021142696. Office phone: 6177263906.
What is Dr. Mark Poznansky's NPI?
Dr. Mark Poznansky's National Provider Identifier (NPI) is 1265509889, issued by NPPES.
Does Dr. Mark Poznansky accept Medicare assignment?
Yes. Dr. Mark Poznansky accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Mark Poznansky commonly perform?
Top Medicare-reported procedures in 2023: Subsequent hospital care with moderate levelof medical decision making (HCPCS 99233); Initial hospital care with moderate level of medical decision making (HCPCS 99223). Source: CMS Medicare Physician & Other Practitioners file.