Doctor profile · Federal record
Dr. Gregory Seymann, M.D.
Hospitalist Physician (CMS: Hospitalist) · Internal Medicine Physician · San Diego, CA
- NPI 1710920442
- Accepts Medicare
- 32 yrs in practice
- Male
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
200 W Arbor Dr
San Diego, CA 921038201
(858) 657-6090
fax (619) 543-3183 - Mailing address
-
Po Box 232410
San Diego, CA 921932410
Credentials & registration
- NPI registered
- June 2006 — 20 yrs on file
- Profile last updated
- June 2, 2020
- Year of graduation
- 1994 — 32 yrs since
- Specialty taxonomy
- 208M00000X — NUCC code
- State license (1)
- California #A55150
- Medicaid
- CA #00A551500
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1710920442. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
387
Distinct HCPCS
5
Medicare allowed
$44,578
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99233 |
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes | 244 | 96 | $123 | |
99232 |
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes | 77 | 42 | $82 | |
99239 |
Hospital discharge day management, more than 30 minutes | 36 | 35 | $119 | |
99223 |
Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes | 15 | 15 | $180 | |
99238 |
Hospital discharge day management, 30 minutes or less | 15 | 15 | $84 |
In context: peer comparison
Among 58 peers in San Diego Hospitalist Physician, average services per provider: 101. This provider delivers 3.8× the peer median.Hospital affiliations
Frequently asked questions
What is Dr. Gregory Seymann's medical specialty?
Dr. Gregory Seymann practices Hospitalist Physician in San Diego, CA.
Where does Dr. Gregory Seymann practice?
Dr. Gregory Seymann practices at 200 W Arbor Dr, San Diego, CA 921038201. Office phone: 8586576090.
What is Dr. Gregory Seymann's NPI?
Dr. Gregory Seymann's National Provider Identifier (NPI) is 1710920442, issued by NPPES.
Does Dr. Gregory Seymann accept Medicare assignment?
Yes. Dr. Gregory Seymann accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Gregory Seymann commonly perform?
Top Medicare-reported procedures in 2023: Subsequent hospital care with moderate levelof medical decision making (HCPCS 99233); Subsequent hospital care with moderate levelof medical decision making (HCPCS 99232); Hospital discharge day management (HCPCS 99239). Source: CMS Medicare Physician & Other Practitioners file.