Doctor profile · Federal record
Dr. Timothy Zisman, MD, MPH
Gastroenterology Physician (CMS: Gastroenterology) · Internal Medicine Physician · Gastroenterology Physician · Seattle, WA
- NPI 1427213461
- Accepts Medicare
- 23 yrs in practice
- Licensed in 2 states
- Male
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
1100 9Th Ave
Seattle, WA 981012756
(206) 223-2319
fax (206) 341-1188
Credentials & registration
- NPI registered
- July 2008 — 18 yrs on file
- Profile last updated
- August 9, 2019
- Year of graduation
- 2003 — 23 yrs since
- Specialty taxonomy
- 207RG0100X — NUCC code
- State licenses (2)
- Washington #MD60078007 · Illinois #036-116032
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1427213461. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
351
Distinct HCPCS
8
Medicare allowed
$52,649
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
45385 |
Removal of polyps or growths of large bowel using an endoscope with mechanical snare | 88 | 87 | $270 | |
45380 |
Biopsy of large bowel using a flexible endoscope | 66 | 65 | $107 | |
99215 |
Established patient office or other outpatient visit, 40-54 minutes | 66 | 41 | $167 | |
36415 |
Insertion of needle into vein for collection of blood sample | 49 | 28 | $8 | |
43239 |
Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope | 43 | 43 | $125 | |
43235 |
Diagnostic exam of esophagus, stomach, and/or upper small bowel using a flexible endoscope | 14 | 14 | $113 | |
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 13 | 12 | $122 | |
99215 |
Established patient office or other outpatient visit, 40-54 minutes | 12 | 12 | $155 |
In context: peer comparison
Among 44 peers in this city , average services per provider: 39. This provider delivers 9.0× the peer median.Open Payments
Industry payments received
All-time total
$139
Transactions
2
Manufacturers
1
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| ABBVIE INC. | 2 | $139.13 |
By nature of payment
Medicare Part D · 2023
Top prescriptions
Total claims
568
Patients
331
Total drug cost
$1,874,757
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Ondansetron Hcl | Generic | 146 | 144 | $227 |
| Gavilyte-G (Peg3350/Sod Sulf,bicarb,cl/Kcl) | Brand | 124 | 123 | $2,230 |
| Humira(Cf) Pen (Adalimumab) | Brand | 51 | 0 | $477,178 |
| Mesalamine | Generic | 34 | 0 | $34,581 |
| Stelara (Ustekinumab) | Brand | 31 | 0 | $803,970 |
| Peg 3350-Electrolyte (Sodium Chloride/Nahco3/Kcl/Peg) | Brand | 28 | 28 | $710 |
| Pantoprazole Sodium | Generic | 21 | 0 | $291 |
| Gavilyte-C (Peg3350/Sod Sulf,bicarb,cl/Kcl) | Brand | 20 | 20 | $341 |
| Methotrexate (Methotrexate Sodium) | Brand | 20 | 0 | $447 |
| Omeprazole | Generic | 20 | 0 | $337 |
Hospital affiliations
Frequently asked questions
What is Dr. Timothy Zisman's medical specialty?
Dr. Timothy Zisman practices Gastroenterology Physician in Seattle, WA.
Where does Dr. Timothy Zisman practice?
Dr. Timothy Zisman practices at 1100 9Th Ave, Seattle, WA 981012756. Office phone: 2062232319.
What is Dr. Timothy Zisman's NPI?
Dr. Timothy Zisman's National Provider Identifier (NPI) is 1427213461, issued by NPPES.
Does Dr. Timothy Zisman accept Medicare assignment?
Yes. Dr. Timothy Zisman accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Timothy Zisman commonly perform?
Top Medicare-reported procedures in 2023: Removal of polyps or growths of large bowel using an endoscope with mechanical snare (HCPCS 45385); Biopsy of large bowel using a flexible endoscope (HCPCS 45380); Established patient office or other outpatient visit (HCPCS 99215). Source: CMS Medicare Physician & Other Practitioners file.