Are you Dr. Johlin? This profile is yours to edit: update your address, phone, photo and services.
Edit this profileAt a glance
- 200 Hawkins Dr, Iowa City, IA 52242
About Dr. Johlin
Based in Iowa City, IA, Frederick C. Johlin, MD is listed in the NPI registry under gastroenterology. Frederick graduated from Medical College of Ohio in 1980. Frederick is also listed as specializing in internal medicine. According to Medicare claims data, Frederick cared for 96 Medicare patients across 134 services. The services billed most often include 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 monit, insertion of stent into pancreatic or bile duct using a flexible endoscope, and removal of stone or debris from bile or pancreatic duct using a flexible endoscope. NPI 1821085960 identifies this record in the national registry.
Factual summary compiled by Guide.md from public records; not written by this provider.
Education & Training
Specialty
Credentials & Licensing
Medicare information
Exactly as CMS reports it (National Downloadable File, Opt-Out Affidavits, Order & Referring). Not an insurance directory; confirm coverage with the office.
Contact Information
- (319) 356-4901
- Email not available
Practice Locations
200 HAWKINS DR
Iowa City, IA 52242
Conditions Commonly Evaluated or Treated
Within Gastroenterology generally. Availability varies by clinician, training and location — this profile has not been claimed, so nothing here is a personal claim by the provider.
Conditions
Most searched conditions
- Acid reflux
- Celiac disease
- Crohn's disease
- Hemorrhoids
- IBS
- Swallowing difficulties
- Ulcerative colitis
Biliary and pancreas
Colon and anorectal
Esophagus and swallowing
Functional bowel and motility
Liver
- Ascites
- Autoimmune hepatitis
- Cirrhosis
- Fatty liver disease
- Hemochromatosis
- Hepatitis B
- Hepatitis C
- Portal hypertension
Stomach and duodenum
Bowel & Colon
Digestive Symptoms
Gallbladder & Bile Ducts
Procedures & services
Most searched procedures
Lower endoscopy
Upper endoscopy
Capsule and physiology testing
Diagnostic Testing
Liver procedures
Treatments
Procedures Most Often Billed to Medicare
134 services · 96 patients · 4 distinct codes
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| Insertion of stent into pancreatic or bile duct using a flexible endoscope | Procedure | 43274 |
26 | As often as other peers in Gastroenterology |
| Removal of stone or debris from bile or pancreatic duct using a flexible endoscope | Procedure | 43264 |
26 | As often as other peers in Gastroenterology |
| Incision of pancreatic outlet using a flexible endoscope | Procedure | 43262 |
11 | Less often than most peers in Gastroenterology |
| 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 monit | Billing code | G0500 |
71 | As often as other peers in Gastroenterology |
Source: CMS Medicare public data. Shows how often procedures were billed — not quality of care or patient satisfaction.
Related providers
Connections drawn from the registry and from what providers have told us. A link here is not a referral or an endorsement.
Other gastroenterologists at this location 1
Same specialty, same street address — most likely the same department or group.
Related specialists at this location 3
Clinically related specialties at the same address — the people this provider most likely works alongside.
Also at this address 4
Providers at the same street address. Each files their own registry entry, so a shared practice often appears under several different names.
More connections — 29 related providers in 4 groups
Other gastroenterologists in Iowa City 7
Same specialty, same city.
Trained at Medical College of Ohio 8
Other providers in the same specialty who trained at the same institution.
Class of 1980 at Medical College of Ohio 8
Providers who graduated from the same medical school in the same year.
Also performs Insertion of stent into pancreatic or bile duct using a flexible endoscope 6
Providers in IA who bill this service to Medicare most often.
Common questions
What does Dr. Johlin specialize in?
Dr. Johlin is a gastroenterologist in Iowa City, IA. That is the designation recorded for this NPI in the federal registry, where it is listed as “Gastroenterology”.
NPI registry
Where is Dr. Johlin located?
Dr. Johlin is listed at 200 Hawkins Dr, Iowa City, IA 52242. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
What is Dr. Johlin's phone number?
The number on file is (319) 356-4901. Contact the office directly to confirm availability and scheduling.
NPI registry
What is Dr. Johlin's NPI number?
Dr. Johlin's National Provider Identifier is 1821085960. It is issued by the Centers for Medicare & Medicaid Services and is unique and permanent — it does not change if they move practice.
NPI registry
Where did Dr. Johlin go to medical school?
Dr. Johlin attended Medical College of Ohio, graduating in 1980. This comes from the CMS National Downloadable File.
CMS public data
How long has Dr. Johlin been practicing?
Dr. Johlin has 46 years experience. Calculated from a graduation year of 1980, reported in the CMS National Downloadable File.
CMS public data
What does Dr. Johlin do most often?
According to Medicare billing data, Dr. Johlin performs procedures including insertion of stent into pancreatic or bile duct using a flexible endoscope, removal of stone or debris from bile or pancreatic duct using a flexible endoscope and incision of pancreatic outlet using a flexible endoscope. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Has Dr. Johlin confirmed this information?
Not yet. This profile is built from public federal data and has not been confirmed by Dr. Johlin. If this is you, claiming it is free.
Guide.md
Guide.md listings do not constitute medical advice or an endorsement.