Xiaoguang Huang, M.D., PHD.
NPI 1235179870 · Internal Medicine Physician · Oakland, CA
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Xiaoguang Huang, M.D., PHD. is a Internal Medicine Physician provider in Oakland, CA (NPI 1235179870).
Provider details
- NPI number
- 1235179870
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D., PHD.
- Sex
- Male
- Sole proprietor
- No
- License
- A64820 (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
20 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
2,237 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 | 1,672 | $110 |
| Annual Wellness Visit, Includes a Personalized Prevention Plan of Service (pps), Subsequent VisitG0439 | 227 | $157 |
| Administration of Influenza Virus VaccineG0008 | 155 | $39 |
| Administration of Pneumococcal VaccineG0009 | 66 | $39 |
| Transitional Care Management Services for Problem of at Least Moderate Complexity99495 | 38 | $254 |
| Injection of Drug Or Substance Under Skin Or Into Muscle96372 | 30 | $18 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 150 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 1,852 | 490 |
| Valsartan | 1,283 | 335 |
| Metformin Hcl | 971 | 254 |
| Carvedilol | 902 | 229 |
| Amlodipine Besylate | 875 | 225 |
| Losartan Potassium | 514 | 139 |
| Empagliflozinbrand: Jardiance | 366 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$784 across 21 records (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
- 2006-06-08
- Last updated
- 2009-08-31
Frequently asked questions
- What is Xiaoguang Huang's NPI number?
- Xiaoguang Huang's National Provider Identifier (NPI) is 1235179870, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Xiaoguang Huang's specialty?
- Xiaoguang Huang is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Xiaoguang Huang located?
- Xiaoguang Huang's practice location on file with NPPES is 345 9th St, Oakland, CA 94607-6522.
- What is Xiaoguang Huang's phone number?
- The practice phone number listed in the NPPES registry for Xiaoguang Huang is (510) 663-9518.
- Does Xiaoguang Huang accept Medicare?
- Xiaoguang Huang is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Xiaoguang Huang's NPI active?
- Yes — Xiaoguang Huang's NPI (1235179870) is active in the NPPES registry as of the last update on 2009-08-31.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.