Quick answers
- Does Gia Humelbaugh accept Medicare assignment?
- Yes. Medicare's clinician data says Gia Humelbaugh accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of October 2, 2026. Ask the office to confirm before your visit.
- How many Medicare patients does Gia Humelbaugh see?
- In 2024, CMS data shows 80 Original Medicare patients and 167 services for Gia Humelbaugh. This counts Original Medicare only and measures volume, not quality.
- What is Gia Humelbaugh's NPI number?
- 1528275310. 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 Gia Humelbaugh, 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 | 80 |
|---|---|
| Services billed to Medicare | 167 |
| Different services or procedures | 22 |
| Participating Medicare provider | Yes |
| Average age of these patients | 68 |
Most frequent services
- Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)73 services
- Telephone medical discussion with physician, 11-20 minutes (99442)28 services
- Insertion of needle into vein for collection of blood sample (36415)18 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 pressure66%
- Diabetes45%
- High cholesterol44%
- Chronic kidney disease26%
- Arthritis19%
Hospitals where Gia Humelbaugh works
Medicare's Facility Affiliation Data lists Gia Humelbaugh at these hospitals (updated October 2, 2026). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians. Star rating and emergency services: Hospital General Information (CMS), data updated October 26, 2026.
- Lac/Harbor-Ucla Medical CenterTorrance, CA · Acute Care Hospital · Medicare rating: 1 of 5 stars · Emergency services: listed by Medicare · CCN 050376
Practice locations
Addresses where Gia Humelbaugh is enrolled with Medicare (CMS data updated October 2, 2026).
- 12021 S Wilmington Ave, Room 1059Los Angeles, CA 90059
- 1333 Chestnut AveLong Beach, CA 90813 (562) 753‑2315
Group practices
Medicare enrollment lists Gia Humelbaugh as a member of this group (CMS data updated October 2, 2026).
- County of Los Angeles397 clinicians in the group
Specialties
- Family Practiceprimary
Other family doctors in Los Angeles
Clinicians with the same Medicare primary specialty in Los Angeles, CA — not a recommendation.
Other clinicians in County of Los Angeles
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | University Of California, Irvine, California College Of Medicine |
| Graduation year | 2004 (22 years since medical school) |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1528275310 |
| 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
- Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated October 2, 2026, retrieved October 29, 2026
- Hospital General Information — CMS, data updated October 26, 2026, retrieved November 13, 2026
- 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