Doctor profile · Federal record
Dr. William Barker, DO
Internal Medicine Physician (CMS: Internal Medicine) · Springfield, MO
- NPI 1245868157
- Accepts Medicare
- 6 yrs in practice
- Male
- Solo practice
- No sanctions
Practice & contact
- Primary practice
-
3801 S National Ave Ste 1122
Springfield, MO 658076090
(417) 269-7728
fax (417) 269-7729 - Mailing address
-
Po Box 802843
Kansas City, MO 641802843
Credentials & registration
- NPI registered
- March 2020 — 6 yrs on file
- Profile last updated
- October 10, 2023
- Year of graduation
- 2020 — 6 yrs since
- Specialty taxonomy
- 207R00000X — NUCC code
- State license (1)
- Missouri #2023013570
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1245868157. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
150
Distinct HCPCS
3
Medicare allowed
$11,887
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99232 |
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes | 112 | 44 | $75 | |
99238 |
Hospital discharge day management, 30 minutes or less | 24 | 24 | $76 | |
99222 |
Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes | 14 | 14 | $123 |
In context: peer comparison
Among 46 peers in Springfield Internal Medicine Physician, average services per provider: 117. This provider delivers 1.3× the peer median.Hospital affiliations
Frequently asked questions
What is Dr. William Barker's medical specialty?
Dr. William Barker practices Internal Medicine Physician in Springfield, MO.
Where does Dr. William Barker practice?
Dr. William Barker practices at 3801 S National Ave Ste 1122, Springfield, MO 658076090. Office phone: 4172697728.
What is Dr. William Barker's NPI?
Dr. William Barker's National Provider Identifier (NPI) is 1245868157, issued by NPPES.
Does Dr. William Barker accept Medicare assignment?
Yes. Dr. William Barker accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. William Barker commonly perform?
Top Medicare-reported procedures in 2023: Subsequent hospital care with moderate levelof medical decision making (HCPCS 99232); Hospital discharge day management (HCPCS 99238); Initial hospital care with straightforward or low-level medical decision making (HCPCS 99222). Source: CMS Medicare Physician & Other Practitioners file.