Doctor profile · Federal record
Dr. John Oholleran, MD
Surgery Physician (CMS: General Surgery) · Surgery Physician · Surgery Physician · Surgery Physician · Oregon City, OR
- NPI 1912007220
- Accepts Medicare
- 39 yrs in practice
- Licensed in 3 states
- Male
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
1510 Division St Ste 210
Oregon City, OR 970451599
(503) 723-6525 - Mailing address
-
Po Box 3158
Portland, OR 972083158
Credentials & registration
- NPI registered
- September 2006 — 20 yrs on file
- Profile last updated
- February 2, 2024
- Year of graduation
- 1987 — 39 yrs since
- Specialty taxonomy
- 208600000X — NUCC code
- State licenses (4)
- Oregon #MD215189 · California #6073614 · California #G73614 · Illinois #036150765
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1912007220. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
105
Distinct HCPCS
4
Medicare allowed
$6,809
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99231 |
Subsequent hospital care with straightforward or low level of medical decision making, per day, if using time, at least 25 minutes | 61 | 22 | $47 | |
99221 |
Initial hospital care with straightforward or low level of medical decision making, per day, if using time, at least 40 minutes | 15 | 15 | $78 | |
99232 |
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes | 15 | 11 | $79 | |
99222 |
Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes | 14 | 14 | $115 |
In context: peer comparison
Among 1 peers in this city , average services per provider: 26. This provider delivers 4.0× the peer median.Medicare Part D · 2023
Top prescriptions
Total claims
18
Patients
17
Total drug cost
$102
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Hydrocodone-Acetaminophen (Hydrocodone/Acetaminophen) | Brand | 18 | 17 | $102 |
Hospital affiliations
Frequently asked questions
What is Dr. John Oholleran's medical specialty?
Dr. John Oholleran practices Surgery Physician in Oregon City, OR.
Where does Dr. John Oholleran practice?
Dr. John Oholleran practices at 1510 Division St Ste 210, Oregon City, OR 970451599. Office phone: 5037236525.
What is Dr. John Oholleran's NPI?
Dr. John Oholleran's National Provider Identifier (NPI) is 1912007220, issued by NPPES.
Does Dr. John Oholleran accept Medicare assignment?
Yes. Dr. John Oholleran accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. John Oholleran commonly perform?
Top Medicare-reported procedures in 2023: Subsequent hospital care with straightforward or low level of medical decision making (HCPCS 99231); Initial hospital care with straightforward or low level of medical decision making (HCPCS 99221); Subsequent hospital care with moderate levelof medical decision making (HCPCS 99232). Source: CMS Medicare Physician & Other Practitioners file.