Doctor profile · Federal record
Dr. John Brennan, D.C.
Chiropractor (CMS: Chiropractic) · Oakdale, CA
- NPI 1568454536
- Accepts Medicare
- 41 yrs in practice
- Male
- Solo practice
- No sanctions
Practice & contact
- Primary practice
-
1390 W H St, Ste C
Oakdale, CA 953613529
(209) 847-8731
fax (209) 847-2291
Credentials & registration
- NPI registered
- August 2005 — 21 yrs on file
- Profile last updated
- September 23, 2020
- Year of graduation
- 1985 — 41 yrs since
- Specialty taxonomy
- 111N00000X — NUCC code
- State license (1)
- California #17443
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1568454536. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
234
Distinct HCPCS
2
Medicare allowed
$9,062
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
98941 |
Chiropractic manipulative treatment, 3-4 spinal regions | 191 | 52 | $41 | |
98940 |
Chiropractic manipulative treatment, 1-2 spinal regions | 43 | 16 | $29 |
In context: peer comparison
Among 1 peers in Oakdale Chiropractor, average services per provider: 117. This provider delivers 2.0× the peer median.Frequently asked questions
What is Dr. John Brennan's medical specialty?
Dr. John Brennan practices Chiropractor in Oakdale, CA.
Where does Dr. John Brennan practice?
Dr. John Brennan practices at 1390 W H St, Oakdale, CA 953613529. Office phone: 2098478731.
What is Dr. John Brennan's NPI?
Dr. John Brennan's National Provider Identifier (NPI) is 1568454536, issued by NPPES.
Does Dr. John Brennan accept Medicare assignment?
Yes. Dr. John Brennan accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. John Brennan commonly perform?
Top Medicare-reported procedures in 2023: Chiropractic manipulative treatment, 3-4 spinal regions (HCPCS 98941); Chiropractic manipulative treatment, 1-2 spinal regions (HCPCS 98940). Source: CMS Medicare Physician & Other Practitioners file.