Quick answers
- Does John H. Welborn Jr. accept Medicare assignment?
- Medicare's clinician data says John H. Welborn Jr. may accept Medicare assignment (as of October 2, 2026). Ask the office whether they accept it for your visit.
- How many Medicare patients does John H. Welborn Jr. see?
- In 2024, CMS data shows 102 Original Medicare patients and 1,329 services for John H. Welborn Jr.. This counts Original Medicare only and measures volume, not quality.
- What is John H. Welborn Jr.'s NPI number?
- 1235179144. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Medicare activity in 2024
Official CMS public-use data for John H. Welborn Jr., data year 2024 (released May 21, 2026). It covers Original Medicare (fee-for-service) patients only, not Medicare Advantage or other insurance. It shows volume, not quality or outcomes. CMS hides any count of 10 or fewer patients.
| Original Medicare patients | 102 |
|---|---|
| Services billed to Medicare | 1,329 |
| Different services or procedures | 26 |
| Participating Medicare provider | Yes |
| Average age of these patients | 78 |
Most frequent services
- Injection, triamcinolone acetonide, not otherwise specified, 10 mg (J3301)401 services
- Aspiration and/or injection of fluid from large joint (20610)296 services
- Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more (99215)272 services
- Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)102 services
- X-ray of knee, 1-2 views (73560)93 services
Chronic conditions among these patients
Share of this clinician’s Original Medicare patients with each condition, as published by CMS (it describes the patients, not the care given).
- High blood pressure75%
- High cholesterol75%
- Arthritis58%
- Diabetes43%
- Chronic kidney disease32%
- Heart failure22%
Practice locations
Addresses where John H. Welborn Jr. is enrolled with Medicare (CMS data updated October 2, 2026).
- 1700 San Pablo AvePinole, CA 94564
- 1700 San Pablo Ave, Suite EPinole, CA 94564 (510) 724‑4600
Specialties
- Orthopedic Surgeryprimary
- Hand Surgeryalso
Other orthopedic surgeons in California
Clinicians with the same Medicare primary specialty in California — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Medical College Of Georgia School Of Medicine |
| Graduation year | 1995 (31 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | May accept for some services |
| NPI (National Provider Identifier) | 1235179144 |
| Corrections | Report an error or suggest an update → |
Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.
Sources
- National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
- Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
- NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
- Medicare Care Compare — official Medicare tool to look up clinicians