Brian Phung, DO
NPI 1588223382 · Family Medicine Physician · San Jose, CA
Enrolled with Medicare as Practitioner - Family Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Brian Phung, DO is a Family Medicine Physician provider in San Jose, CA (NPI 1588223382).
Provider details
- NPI number
- 1588223382
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- DO
- Sex
- Male
- Sole proprietor
- No
- License
- 19656 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
7 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
179 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 Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 51 | $155 |
| Visit Complexity Inherent to Evaluation and Management Associated With Medical Care Services That Serve As the Continuing Focal Point for All Needed Health Care Services And/Or With Medical Care Services That Are Part of Ongoing Care Related to a Patient'SG2211 | 49 | $19 |
| Advance Care Planning, First 30 Minutes99497 | 18 | $96 |
| Annual Alcohol Misuse Screening, 5 to 15 MinutesG0442 | 17 | $24 |
| Annual, Face-To-Face Intensive Behavioral Therapy for Cardiovascular Disease, Individual, 15 MinutesG0446 | 16 | $29 |
| Annual Wellness Visit, Includes a Personalized Prevention Plan of Service (pps), Subsequent Visit |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 65 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 324 | 133 |
| Amlodipine Besylate | 254 | 111 |
| Losartan Potassium | 200 | 87 |
| Fluticasone Propionate | 176 | 65 |
| Metformin Hcl | 167 | 67 |
| Omeprazole | 139 | 55 |
| Celecoxib | 108 | 54 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$948 across 43 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
- 2019-06-06
- Last updated
- 2026-05-21
- Certified
- 2026-05-21
Frequently asked questions
- What is Brian Phung's NPI number?
- Brian Phung's National Provider Identifier (NPI) is 1588223382, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Brian Phung's specialty?
- Brian Phung is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Brian Phung located?
- Brian Phung's practice location on file with NPPES is 227 N Jackson Ave Ste 235, San Jose, CA 95116-1635.
- What is Brian Phung's phone number?
- The practice phone number listed in the NPPES registry for Brian Phung is (408) 254-9192.
- Does Brian Phung accept Medicare?
- Brian Phung is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Brian Phung's NPI active?
- Yes — Brian Phung's NPI (1588223382) is active in the NPPES registry as of the last update on 2026-05-21.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.