Doctor profile · Federal record
Dr. Cassidy Claassen, M.D.
Hospitalist Physician (CMS: Infectious Disease) · Baltimore, MD
- NPI 1477796696
- Accepts Medicare
- 17 yrs in practice
- Male
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
22 S Greene St
Baltimore, MD 212011544
(410) 328-2882
fax (410) 328-2977 - Mailing address
-
Po Box 64442
Baltimore, MD 212644442
Credentials & registration
- NPI registered
- April 2009 — 17 yrs on file
- Profile last updated
- February 1, 2013
- Year of graduation
- 2009 — 17 yrs since
- Specialty taxonomy
- 208M00000X — NUCC code
- State license (1)
- Maryland #D74704
- Medicaid
- MD #335424500
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1477796696. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
49
Distinct HCPCS
2
Medicare allowed
$5,511
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99232 |
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes | 35 | 12 | $84 | |
99223 |
Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes | 14 | 14 | $184 |
In context: peer comparison
Among 51 peers in this city , average services per provider: 125. This provider delivers 0.4× the peer median.Frequently asked questions
What is Dr. Cassidy Claassen's medical specialty?
Dr. Cassidy Claassen practices Hospitalist Physician in Baltimore, MD.
Where does Dr. Cassidy Claassen practice?
Dr. Cassidy Claassen practices at 22 S Greene St, Baltimore, MD 212011544. Office phone: 4103282882.
What is Dr. Cassidy Claassen's NPI?
Dr. Cassidy Claassen's National Provider Identifier (NPI) is 1477796696, issued by NPPES.
Does Dr. Cassidy Claassen accept Medicare assignment?
Yes. Dr. Cassidy Claassen accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Cassidy Claassen commonly perform?
Top Medicare-reported procedures in 2023: Subsequent hospital care with moderate levelof medical decision making (HCPCS 99232); Initial hospital care with moderate level of medical decision making (HCPCS 99223). Source: CMS Medicare Physician & Other Practitioners file.