Doctor profile · Federal record
Dr. Frederick Johlin, MD
Gastroenterology Physician · Internal Medicine Physician · Hepatology Physician · Iowa City, IA
- NPI 1821085960
- 21 yrs on file
- Male
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
200 Hawkins Dr
Iowa City, IA 522421009
(319) 356-4901
fax (319) 384-8559
Credentials & registration
- NPI registered
- October 2005 — 21 yrs on file
- Profile last updated
- September 2, 2021
- Specialty taxonomy
- 207RG0100X — NUCC code
- State license (1)
- Iowa #23554
- Medicaid
- IA #0215855
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1821085960. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
257
Distinct HCPCS
6
Medicare allowed
$33,001
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
G0500 |
Moderate sedation services provided by the same physician or other qualified health care professional performing a gastrointestinal endoscopic service that sedation supports, requiring the presence of an independent trained observer to assist in the monito | 101 | 66 | $5 | |
43264 |
Removal of stone or debris from bile or pancreatic duct using a flexible endoscope | 49 | 35 | $197 | |
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 36 | 31 | $91 | |
43274 |
Insertion of stent into pancreatic or bile duct using a flexible endoscope | 28 | 16 | $295 | |
43276 |
Replacement of stent in pancreatic or bile duct using a flexible endoscope | 23 | 15 | $426 | |
43262 |
Incision of pancreatic outlet using a flexible endoscope | 20 | 20 | $76 |
In context: peer comparison
Among 14 peers in this city , average services per provider: 36. This provider delivers 7.1× the peer median.Medicare Part D · 2023
Top prescriptions
Total claims
289
Patients
43
Total drug cost
$90,719
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Ursodiol | Generic | 126 | 27 | $31,882 |
| Creon (Lipase/Protease/Amylase) | Brand | 35 | 16 | $56,860 |
| Pantoprazole Sodium | Generic | 24 | 0 | $404 |
| Spironolactone | Generic | 21 | 0 | $424 |
| Sucralfate | Generic | 21 | 0 | $247 |
| Furosemide | Generic | 18 | 0 | $165 |
| Atorvastatin Calcium | Generic | 17 | 0 | $217 |
| Ciprofloxacin Hcl | Generic | 14 | 0 | $98 |
| Lactulose | Generic | 13 | 0 | $421 |
Frequently asked questions
What is Dr. Frederick Johlin's medical specialty?
Dr. Frederick Johlin practices Gastroenterology Physician in Iowa City, IA.
Where does Dr. Frederick Johlin practice?
Dr. Frederick Johlin practices at 200 Hawkins Dr, Iowa City, IA 522421009. Office phone: 3193564901.
What is Dr. Frederick Johlin's NPI?
Dr. Frederick Johlin's National Provider Identifier (NPI) is 1821085960, issued by NPPES.
What procedures does Dr. Frederick Johlin commonly perform?
Top Medicare-reported procedures in 2023: Moderate sedation services provided by the same physician or other qualified health care professional performing a gastrointestinal endoscopic service that sedation supports, requiring the presence of an independent trained observer to assist in the monito (HCPCS G0500); Removal of stone or debris from bile or pancreatic duct using a flexible endoscope (HCPCS 43264); Established patient office or other outpatient visit (HCPCS 99214). Source: CMS Medicare Physician & Other Practitioners file.