Gia Humelbaugh, M.D.
NPI 1528275310 · Family Medicine Physician · Harbor City, CA
Enrolled with Medicare as Practitioner - Family Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Gia Humelbaugh, M.D. is a Family Medicine Physician provider in Harbor City, CA (NPI 1528275310).
Provider details
- NPI number
- 1528275310
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Female
- Sole proprietor
- No
- License
- A95749 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
19 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
119 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our .
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 73 | $99 |
| Telephone Medical Discussion With Physician, 11-20 Minutes99442 | 28 | $71 |
| Insertion of Needle Into Vein for Collection of Blood Sample36415 | 18 | $9 |
Typical Medicare-allowed amounts for these services range $9–$99 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 24 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Metformin Hcl | 89 | 30 |
| Losartan Potassium | 58 | 22 |
| Amlodipine Besylate | 55 | 16 |
| Atorvastatin Calcium | 54 | 20 |
| Hydrochlorothiazide | 43 | 13 |
| Lisinopril | 30 | 11 |
| Propranolol Hcl | 24 | — |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$28 across 1 record (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2007-05-17
- Last updated
- 2007-07-08
Frequently asked questions
- What is Gia Humelbaugh's NPI number?
- Gia Humelbaugh's National Provider Identifier (NPI) is 1528275310, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Gia Humelbaugh's specialty?
- Gia Humelbaugh is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Gia Humelbaugh located?
- Gia Humelbaugh's practice location on file with NPPES is 1403 Lomita Blvd, Harbor City, CA 90710-2076.
- What is Gia Humelbaugh's phone number?
- The practice phone number listed in the NPPES registry for Gia Humelbaugh is (310) 534-7600.
- Does Gia Humelbaugh accept Medicare?
- Gia Humelbaugh is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Gia Humelbaugh's NPI active?
- Yes — Gia Humelbaugh's NPI (1528275310) is active in the NPPES registry as of the last update on 2007-07-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.