Cameron Chang, M.D.
NPI 1659504330 · Internal Medicine Physician · Bakersfield, CA
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Cameron Chang, M.D. is a Internal Medicine Physician provider in Bakersfield, CA (NPI 1659504330).
Provider details
- NPI number
- 1659504330
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- A120751 (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
16 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
1,209 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) |
|---|---|---|
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes99232 | 717 | $78 |
| Hospital Discharge Day Management, More Than 30 Minutes99239 | 173 | $113 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 50 Minutes99233 | 152 | $116 |
| Initial Hospital Care With Moderate Level of Medical Decision Making, If Using Time, at Least 75 Minutes99223 | 123 | $171 |
| Hospital Discharge Day Management, 30 Minutes Or Less99238 | 24 | $81 |
| Initial Hospital Care With Straightforward Or Low-Level Medical Decision Making, If Using Time, at Least 55 Minutes99222 | 20 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 18 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Pantoprazole Sodium | 97 | 88 |
| Doxycycline Hyclate | 60 | 58 |
| Levofloxacin | 50 | 49 |
| Prednisone | 36 | 33 |
| Amoxicillin/Potassium Clavbrand: Amoxicillin-Clavulanate Potass | 33 | 33 |
| Metronidazole | 27 | 27 |
| Hydrocodone/Acetaminophenbrand: Hydrocodone-Acetaminophen |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$17 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
- 2009-08-28
- Last updated
- 2014-07-16
Frequently asked questions
- What is Cameron Chang's NPI number?
- Cameron Chang's National Provider Identifier (NPI) is 1659504330, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Cameron Chang's specialty?
- Cameron Chang is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Cameron Chang located?
- Cameron Chang's practice location on file with NPPES is 3001 Sillect Ave, Bakersfield, CA 93308-6337.
- What is Cameron Chang's phone number?
- The practice phone number listed in the NPPES registry for Cameron Chang is (661) 316-6000.
- Does Cameron Chang accept Medicare?
- Cameron Chang is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Cameron Chang's NPI active?
- Yes — Cameron Chang's NPI (1659504330) is active in the NPPES registry as of the last update on 2014-07-16.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.